/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.29.0.  By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other
................................................................................
  "ENABLE_SORTER_REFERENCES",
#endif
#if SQLITE_ENABLE_SQLLOG
  "ENABLE_SQLLOG",
#endif
#if defined(SQLITE_ENABLE_STAT4)
  "ENABLE_STAT4",
#elif defined(SQLITE_ENABLE_STAT3)
  "ENABLE_STAT3",
#endif
#if SQLITE_ENABLE_STMTVTAB
  "ENABLE_STMTVTAB",
#endif
#if SQLITE_ENABLE_STMT_SCANSTATUS
  "ENABLE_STMT_SCANSTATUS",
#endif
................................................................................
** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.29.0"
#define SQLITE_VERSION_NUMBER 3029000
#define SQLITE_SOURCE_ID      "2019-07-08 13:45:02 8fb0c6d5a38e77aa4c5f394fb8af1b0c7c6a4790e932aabc213a3078ee9acaf6"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** The first argument is an integer which is 0 to disable triggers,
** positive to enable triggers or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which
** is written 0 or 1 to indicate whether triggers are disabled or enabled
** following this call.  The second parameter may be a NULL pointer, in
** which case the trigger setting is not reported back. </dd>
**











** [[SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER]]
** <dt>SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER</dt>
** <dd> ^This option is used to enable or disable the
** [fts3_tokenizer()] function which is part of the
** [FTS3] full-text search engine extension.
** There should be two additional arguments.
** The first argument is an integer which is 0 to disable fts3_tokenizer() or
................................................................................
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */
#define SQLITE_DBCONFIG_RESET_DATABASE        1009 /* int int* */
#define SQLITE_DBCONFIG_DEFENSIVE             1010 /* int int* */
#define SQLITE_DBCONFIG_WRITABLE_SCHEMA       1011 /* int int* */
#define SQLITE_DBCONFIG_LEGACY_ALTER_TABLE    1012 /* int int* */
#define SQLITE_DBCONFIG_DQS_DML               1013 /* int int* */
#define SQLITE_DBCONFIG_DQS_DDL               1014 /* int int* */

#define SQLITE_DBCONFIG_MAX                   1014 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** WHERE clause might influence the choice of query plan for a statement,
** then the statement will be automatically recompiled, as if there had been 
** a schema change, on the first  [sqlite3_step()] call following any change
** to the [sqlite3_bind_text | bindings] of that [parameter]. 
** ^The specific value of WHERE-clause [parameter] might influence the 
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
** </li>
** </ol>
**
** <p>^sqlite3_prepare_v3() differs from sqlite3_prepare_v2() only in having
** the extra prepFlags parameter, which is a bit array consisting of zero or
** more of the [SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_*] flags.  ^The
** sqlite3_prepare_v2() interface works exactly the same as
................................................................................
** ^The fourth parameter may optionally be ORed with [SQLITE_DETERMINISTIC]
** to signal that the function will always return the same result given
** the same inputs within a single SQL statement.  Most SQL functions are
** deterministic.  The built-in [random()] SQL function is an example of a
** function that is not deterministic.  The SQLite query planner is able to
** perform additional optimizations on deterministic functions, so use
** of the [SQLITE_DETERMINISTIC] flag is recommended where possible.






**
** ^(The fifth parameter is an arbitrary pointer.  The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
** ^The sixth, seventh and eighth parameters passed to the three
** "sqlite3_create_function*" functions, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
................................................................................
/*
** CAPI3REF: Function Flags
**
** These constants may be ORed together with the 
** [SQLITE_UTF8 | preferred text encoding] as the fourth argument
** to [sqlite3_create_function()], [sqlite3_create_function16()], or
** [sqlite3_create_function_v2()].




















*/
#define SQLITE_DETERMINISTIC    0x800



/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated].  In order to maintain
** backwards compatibility with older code, these functions continue 
................................................................................
** is a pointer to a destructor for the pClientData.  ^SQLite will
** invoke the destructor function (if it is not NULL) when SQLite
** no longer needs the pClientData pointer.  ^The destructor will also
** be invoked if the call to sqlite3_create_module_v2() fails.
** ^The sqlite3_create_module()
** interface is equivalent to sqlite3_create_module_v2() with a NULL
** destructor.






*/
SQLITE_API int sqlite3_create_module(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData          /* Client data for xCreate/xConnect */
);
................................................................................
SQLITE_API int sqlite3_create_module_v2(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData,         /* Client data for xCreate/xConnect */
  void(*xDestroy)(void*)     /* Module destructor function */
);


















/*
** CAPI3REF: Virtual Table Instance Object
** KEYWORDS: sqlite3_vtab
**
** Every [virtual table module] implementation uses a subclass
** of this object to describe a particular instance
................................................................................
** without notice.  These values are for testing purposes only.
** Applications should not use any of these parameters or the
** [sqlite3_test_control()] interface.
*/
#define SQLITE_TESTCTRL_FIRST                    5
#define SQLITE_TESTCTRL_PRNG_SAVE                5
#define SQLITE_TESTCTRL_PRNG_RESTORE             6
#define SQLITE_TESTCTRL_PRNG_RESET               7
#define SQLITE_TESTCTRL_BITVEC_TEST              8
#define SQLITE_TESTCTRL_FAULT_INSTALL            9
#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS     10
#define SQLITE_TESTCTRL_PENDING_BYTE            11
#define SQLITE_TESTCTRL_ASSERT                  12
#define SQLITE_TESTCTRL_ALWAYS                  13
#define SQLITE_TESTCTRL_RESERVE                 14
................................................................................
#define SQLITE_TESTCTRL_VDBE_COVERAGE           21
#define SQLITE_TESTCTRL_BYTEORDER               22
#define SQLITE_TESTCTRL_ISINIT                  23
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_PARSER_COVERAGE         26
#define SQLITE_TESTCTRL_RESULT_INTREAL          27


#define SQLITE_TESTCTRL_LAST                    27  /* Largest TESTCTRL */

/*
** CAPI3REF: SQL Keyword Checking
**
** These routines provide access to the set of SQL language keywords 
** recognized by SQLite.  Applications can uses these routines to determine
** whether or not a specific identifier needs to be escaped (for example,
................................................................................
** that vary from one machine to the next.
**
** Ticket #3860:  The llvm-gcc-4.2 compiler from Apple chokes on
** the ((void*)&((char*)0)[X]) construct.  But MSVC chokes on ((void*)(X)).
** So we have to define the macros in different ways depending on the
** compiler.
*/



#if defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define SQLITE_INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))
#elif !defined(__GNUC__)       /* Works for compilers other than LLVM */
# define SQLITE_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define SQLITE_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#elif defined(HAVE_STDINT_H)   /* Use this case if we have ANSI headers */
# define SQLITE_INT_TO_PTR(X)  ((void*)(intptr_t)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(intptr_t)(X))
#else                          /* Generates a warning - but it always works */
# define SQLITE_INT_TO_PTR(X)  ((void*)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(X))
#endif

/*
** A macro to hint to the compiler that a function should not be
................................................................................
#define TK_ROW                             75
#define TK_ROWS                            76
#define TK_TRIGGER                         77
#define TK_VACUUM                          78
#define TK_VIEW                            79
#define TK_VIRTUAL                         80
#define TK_WITH                            81



#define TK_CURRENT                         82
#define TK_FOLLOWING                       83
#define TK_PARTITION                       84
#define TK_PRECEDING                       85
#define TK_RANGE                           86
#define TK_UNBOUNDED                       87
#define TK_EXCLUDE                         88
#define TK_GROUPS                          89
#define TK_OTHERS                          90
#define TK_TIES                            91
#define TK_REINDEX                         92
#define TK_RENAME                          93
#define TK_CTIME_KW                        94
#define TK_ANY                             95
#define TK_BITAND                          96
#define TK_BITOR                           97
#define TK_LSHIFT                          98
#define TK_RSHIFT                          99
#define TK_PLUS                           100
#define TK_MINUS                          101
#define TK_STAR                           102
#define TK_SLASH                          103
#define TK_REM                            104
#define TK_CONCAT                         105
#define TK_COLLATE                        106
#define TK_BITNOT                         107
#define TK_ON                             108
#define TK_INDEXED                        109
#define TK_STRING                         110
#define TK_JOIN_KW                        111
#define TK_CONSTRAINT                     112
#define TK_DEFAULT                        113
#define TK_NULL                           114
#define TK_PRIMARY                        115
#define TK_UNIQUE                         116
#define TK_CHECK                          117
#define TK_REFERENCES                     118
#define TK_AUTOINCR                       119
#define TK_INSERT                         120
#define TK_DELETE                         121
#define TK_UPDATE                         122
#define TK_SET                            123
#define TK_DEFERRABLE                     124
#define TK_FOREIGN                        125
#define TK_DROP                           126
#define TK_UNION                          127
#define TK_ALL                            128
#define TK_EXCEPT                         129
#define TK_INTERSECT                      130
#define TK_SELECT                         131
#define TK_VALUES                         132
#define TK_DISTINCT                       133
#define TK_DOT                            134
#define TK_FROM                           135
#define TK_JOIN                           136
#define TK_USING                          137
#define TK_ORDER                          138
#define TK_GROUP                          139
#define TK_HAVING                         140
#define TK_LIMIT                          141
#define TK_WHERE                          142
#define TK_INTO                           143
#define TK_NOTHING                        144
#define TK_FLOAT                          145
#define TK_BLOB                           146
#define TK_INTEGER                        147
#define TK_VARIABLE                       148
#define TK_CASE                           149
#define TK_WHEN                           150
#define TK_THEN                           151
#define TK_ELSE                           152
#define TK_INDEX                          153
#define TK_ALTER                          154
#define TK_ADD                            155
#define TK_WINDOW                         156
#define TK_OVER                           157
#define TK_FILTER                         158
#define TK_TRUEFALSE                      159
#define TK_ISNOT                          160
#define TK_FUNCTION                       161
#define TK_COLUMN                         162
#define TK_AGG_FUNCTION                   163
#define TK_AGG_COLUMN                     164



#define TK_UMINUS                         165
#define TK_UPLUS                          166
#define TK_TRUTH                          167
#define TK_REGISTER                       168
#define TK_VECTOR                         169
#define TK_SELECT_COLUMN                  170
#define TK_IF_NULL_ROW                    171
#define TK_ASTERISK                       172
#define TK_SPAN                           173
#define TK_SPACE                          174
#define TK_ILLEGAL                        175

/************** End of parse.h ***********************************************/
/************** Continuing where we left off in sqliteInt.h ******************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
................................................................................
# define SQLITE_DEFAULT_MMAP_SIZE 0
#endif
#if SQLITE_DEFAULT_MMAP_SIZE>SQLITE_MAX_MMAP_SIZE
# undef SQLITE_DEFAULT_MMAP_SIZE
# define SQLITE_DEFAULT_MMAP_SIZE SQLITE_MAX_MMAP_SIZE
#endif

/*
** Only one of SQLITE_ENABLE_STAT3 or SQLITE_ENABLE_STAT4 can be defined.
** Priority is given to SQLITE_ENABLE_STAT4.  If either are defined, also
** define SQLITE_ENABLE_STAT3_OR_STAT4
*/
#ifdef SQLITE_ENABLE_STAT4
# undef SQLITE_ENABLE_STAT3
# define SQLITE_ENABLE_STAT3_OR_STAT4 1
#elif SQLITE_ENABLE_STAT3
# define SQLITE_ENABLE_STAT3_OR_STAT4 1
#elif SQLITE_ENABLE_STAT3_OR_STAT4
# undef SQLITE_ENABLE_STAT3_OR_STAT4
#endif

/*
** SELECTTRACE_ENABLED will be either 1 or 0 depending on whether or not
** the Select query generator tracing logic is turned on.
*/
#if defined(SQLITE_ENABLE_SELECTTRACE)
# define SELECTTRACE_ENABLED 1
#else
................................................................................
#define OP_Offset         89 /* synopsis: r[P3] = sqlite_offset(P1)        */
#define OP_Column         90 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       91 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     92 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count          93 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie     94
#define OP_SetCookie      95
#define OP_BitAnd         96 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr          97 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft      98 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
#define OP_ShiftRight     99 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
#define OP_Add           100 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
#define OP_Subtract      101 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply      102 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide        103 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder     104 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat        105 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_ReopenIdx     106 /* synopsis: root=P2 iDb=P3                   */
#define OP_BitNot        107 /* same as TK_BITNOT, synopsis: r[P2]= ~r[P1] */
#define OP_OpenRead      108 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite     109 /* synopsis: root=P2 iDb=P3                   */
#define OP_String8       110 /* same as TK_STRING, synopsis: r[P2]='P4'    */
#define OP_OpenDup       111
#define OP_OpenAutoindex 112 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral 113 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen    114
#define OP_SequenceTest  115 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo    116 /* synopsis: P3 columns in r[P2]              */
#define OP_Close         117
#define OP_ColumnsUsed   118
#define OP_SeekHit       119 /* synopsis: seekHit=P2                       */
#define OP_Sequence      120 /* synopsis: r[P2]=cursor[P1].ctr++           */
................................................................................
#define OP_ResetSorter   138
#define OP_CreateBtree   139 /* synopsis: r[P2]=root iDb=P1 flags=P3       */
#define OP_SqlExec       140
#define OP_ParseSchema   141
#define OP_LoadAnalysis  142
#define OP_DropTable     143
#define OP_DropIndex     144
#define OP_Real          145 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
#define OP_DropTrigger   146
#define OP_IntegrityCk   147
#define OP_RowSetAdd     148 /* synopsis: rowset(P1)=r[P2]                 */

#define OP_Param         149
#define OP_FkCounter     150 /* synopsis: fkctr[P1]+=P2                    */
#define OP_MemMax        151 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_OffsetLimit   152 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_AggInverse    153 /* synopsis: accum=r[P3] inverse(r[P2@P5])    */
#define OP_AggStep       154 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep1      155 /* synopsis: accum=r[P3] step(r[P2@P5])       */
................................................................................
/*  40 */ 0x01, 0x23, 0x0b, 0x26, 0x26, 0x01, 0x01, 0x03,\
/*  48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
/*  56 */ 0x0b, 0x0b, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,\
/*  64 */ 0x00, 0x00, 0x02, 0x02, 0x08, 0x00, 0x10, 0x10,\
/*  72 */ 0x10, 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10,\
/*  80 */ 0x10, 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00,\
/*  88 */ 0x12, 0x20, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00,\
/*  96 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26,\
/* 104 */ 0x26, 0x26, 0x00, 0x12, 0x00, 0x00, 0x10, 0x00,\
/* 112 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 120 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 128 */ 0x10, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x10,\
/* 136 */ 0x10, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,\
/* 144 */ 0x00, 0x10, 0x00, 0x00, 0x06, 0x10, 0x00, 0x04,\
/* 152 */ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10,\
/* 168 */ 0x00, 0x00, 0x00, 0x00, 0x00,}

/* The sqlite3P2Values() routine is able to run faster if it knows
** the value of the largest JUMP opcode.  The smaller the maximum
** JUMP opcode the better, so the mkopcodeh.tcl script that
................................................................................
#endif
#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_EXPLAIN)
SQLITE_PRIVATE   void sqlite3ExplainBreakpoint(const char*,const char*);
#else
# define sqlite3ExplainBreakpoint(A,B) /*no-op*/
#endif
SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
................................................................................
  struct sqlite3InitInfo {      /* Information used during initialization */
    int newTnum;                /* Rootpage of table being initialized */
    u8 iDb;                     /* Which db file is being initialized */
    u8 busy;                    /* TRUE if currently initializing */
    unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */
    unsigned imposterTable : 1; /* Building an imposter table */
    unsigned reopenMemdb : 1;   /* ATTACH is really a reopen using MemDB */

  } init;
  int nVdbeActive;              /* Number of VDBEs currently running */
  int nVdbeRead;                /* Number of active VDBEs that read or write */
  int nVdbeWrite;               /* Number of active VDBEs that read and write */
  int nVdbeExec;                /* Number of nested calls to VdbeExec() */
  int nVDestroy;                /* Number of active OP_VDestroy operations */
  int nExtension;               /* Number of loaded extensions */
................................................................................
#define SQLITE_TriggerEQP     0x01000000  /* Show trigger EXPLAIN QUERY PLAN */
#define SQLITE_ResetDatabase  0x02000000  /* Reset the database */
#define SQLITE_LegacyAlter    0x04000000  /* Legacy ALTER TABLE behaviour */
#define SQLITE_NoSchemaError  0x08000000  /* Do not report schema parse errors*/
#define SQLITE_Defensive      0x10000000  /* Input SQL is likely hostile */
#define SQLITE_DqsDDL         0x20000000  /* dbl-quoted strings allowed in DDL*/
#define SQLITE_DqsDML         0x40000000  /* dbl-quoted strings allowed in DML*/


/* Flags used only if debugging */
#define HI(X)  ((u64)(X)<<32)
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       HI(0x0001)  /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    HI(0x0002)  /* Debug listings of VDBE progs */
#define SQLITE_VdbeTrace      HI(0x0004)  /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace HI(0x0008)  /* Trace sqlite3VdbeAddOp() calls */
#define SQLITE_VdbeEQP        HI(0x0010)  /* Debug EXPLAIN QUERY PLAN */
#define SQLITE_ParserTrace    HI(0x0020)  /* PRAGMA parser_trace=ON */
#endif

/*
** Allowed values for sqlite3.mDbFlags
*/
#define DBFLAG_SchemaChange   0x0001  /* Uncommitted Hash table changes */
#define DBFLAG_PreferBuiltin  0x0002  /* Preference to built-in funcs */
................................................................................
#define SQLITE_DistinctOpt    0x0010   /* DISTINCT using indexes */
#define SQLITE_CoverIdxScan   0x0020   /* Covering index scans */
#define SQLITE_OrderByIdxJoin 0x0040   /* ORDER BY of joins via index */
#define SQLITE_Transitive     0x0080   /* Transitive constraints */
#define SQLITE_OmitNoopJoin   0x0100   /* Omit unused tables in joins */
#define SQLITE_CountOfView    0x0200   /* The count-of-view optimization */
#define SQLITE_CursorHints    0x0400   /* Add OP_CursorHint opcodes */
#define SQLITE_Stat34         0x0800   /* Use STAT3 or STAT4 data */
   /* TH3 expects the Stat34  ^^^^^^ value to be 0x0800.  Don't change it */
#define SQLITE_PushDown       0x1000   /* The push-down optimization */
#define SQLITE_SimplifyJoin   0x2000   /* Convert LEFT JOIN to JOIN */
#define SQLITE_SkipScan       0x4000   /* Skip-scans */
#define SQLITE_PropagateConst 0x8000   /* The constant propagation opt */
#define SQLITE_AllOpts        0xffff   /* All optimizations */

/*
................................................................................
** are assert() statements in the code to verify this.
**
** Value constraints (enforced via assert()):
**     SQLITE_FUNC_MINMAX    ==  NC_MinMaxAgg      == SF_MinMaxAgg
**     SQLITE_FUNC_LENGTH    ==  OPFLAG_LENGTHARG
**     SQLITE_FUNC_TYPEOF    ==  OPFLAG_TYPEOFARG
**     SQLITE_FUNC_CONSTANT  ==  SQLITE_DETERMINISTIC from the API

**     SQLITE_FUNC_ENCMASK   depends on SQLITE_UTF* macros in the API
*/
#define SQLITE_FUNC_ENCMASK  0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */
#define SQLITE_FUNC_LIKE     0x0004 /* Candidate for the LIKE optimization */
#define SQLITE_FUNC_CASE     0x0008 /* Case-sensitive LIKE-type function */
#define SQLITE_FUNC_EPHEM    0x0010 /* Ephemeral.  Delete with VDBE */
#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/
................................................................................
#define SQLITE_FUNC_MINMAX   0x1000 /* True for min() and max() aggregates */
#define SQLITE_FUNC_SLOCHNG  0x2000 /* "Slow Change". Value constant during a
                                    ** single query - might change over time */
#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
#define SQLITE_FUNC_OFFSET   0x8000 /* Built-in sqlite_offset() function */
#define SQLITE_FUNC_WINDOW   0x00010000 /* Built-in window-only function */
#define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */



/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
** used to create the initializers for the FuncDef structures.
**
**   FUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Used to create a scalar function definition of a function zName
................................................................................
** Each SQLite module (virtual table definition) is defined by an
** instance of the following structure, stored in the sqlite3.aModule
** hash table.
*/
struct Module {
  const sqlite3_module *pModule;       /* Callback pointers */
  const char *zName;                   /* Name passed to create_module() */

  void *pAux;                          /* pAux passed to create_module() */
  void (*xDestroy)(void *);            /* Module destructor function */
  Table *pEpoTab;                      /* Eponymous table for this module */
};

/*
** information about each column of an SQL table is held in an instance
................................................................................
** But rather than start with 0 or 1, we begin with 'A'.  That way,
** when multiple affinity types are concatenated into a string and
** used as the P4 operand, they will be more readable.
**
** Note also that the numeric types are grouped together so that testing
** for a numeric type is a single comparison.  And the BLOB type is first.
*/

#define SQLITE_AFF_BLOB     'A'
#define SQLITE_AFF_TEXT     'B'
#define SQLITE_AFF_NUMERIC  'C'
#define SQLITE_AFF_INTEGER  'D'
#define SQLITE_AFF_REAL     'E'

#define sqlite3IsNumericAffinity(X)  ((X)>=SQLITE_AFF_NUMERIC)

/*
** The SQLITE_AFF_MASK values masks off the significant bits of an
** affinity value.
*/
................................................................................
*/
struct KeyInfo {
  u32 nRef;           /* Number of references to this KeyInfo object */
  u8 enc;             /* Text encoding - one of the SQLITE_UTF* values */
  u16 nKeyField;      /* Number of key columns in the index */
  u16 nAllField;      /* Total columns, including key plus others */
  sqlite3 *db;        /* The database connection */
  u8 *aSortOrder;     /* Sort order for each column. */
  CollSeq *aColl[1];  /* Collating sequence for each term of the key */
};







/*
** This object holds a record which has been parsed out into individual
** fields, for the purposes of doing a comparison.
**
** A record is an object that contains one or more fields of data.
** Records are used to store the content of a table row and to store
** the key of an index.  A blob encoding of a record is created by
................................................................................
  unsigned uniqNotNull:1;  /* True if UNIQUE and NOT NULL for all columns */
  unsigned isResized:1;    /* True if resizeIndexObject() has been called */
  unsigned isCovering:1;   /* True if this is a covering index */
  unsigned noSkipScan:1;   /* Do not try to use skip-scan if true */
  unsigned hasStat1:1;     /* aiRowLogEst values come from sqlite_stat1 */
  unsigned bNoQuery:1;     /* Do not use this index to optimize queries */
  unsigned bAscKeyBug:1;   /* True if the bba7b69f9849b5bf bug applies */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int nSample;             /* Number of elements in aSample[] */
  int nSampleCol;          /* Size of IndexSample.anEq[] and so on */
  tRowcnt *aAvgEq;         /* Average nEq values for keys not in aSample */
  IndexSample *aSample;    /* Samples of the left-most key */
  tRowcnt *aiRowEst;       /* Non-logarithmic stat1 data for this index */
  tRowcnt nRowEst0;        /* Non-logarithmic number of rows in the index */
#endif
................................................................................
/* The Index.aiColumn[] values are normally positive integer.  But
** there are some negative values that have special meaning:
*/
#define XN_ROWID     (-1)     /* Indexed column is the rowid */
#define XN_EXPR      (-2)     /* Indexed column is an expression */

/*
** Each sample stored in the sqlite_stat3 table is represented in memory
** using a structure of this type.  See documentation at the top of the
** analyze.c source file for additional information.
*/
struct IndexSample {
  void *p;          /* Pointer to sampled record */
  int n;            /* Size of record in bytes */
  tRowcnt *anEq;    /* Est. number of rows where the key equals this sample */
................................................................................
** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees
** are contained within the same memory allocation.  Note, however, that
** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately
** allocated, regardless of whether or not EP_Reduced is set.
*/
struct Expr {
  u8 op;                 /* Operation performed by this node */
  char affinity;         /* The affinity of the column or 0 if not a column */
  u32 flags;             /* Various flags.  EP_* See below */
  union {
    char *zToken;          /* Token value. Zero terminated and dequoted */
    int iValue;            /* Non-negative integer value if EP_IntValue */
  } u;

  /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no
................................................................................
#if SQLITE_MAX_EXPR_DEPTH>0
  int nHeight;           /* Height of the tree headed by this node */
#endif
  int iTable;            /* TK_COLUMN: cursor number of table holding column
                         ** TK_REGISTER: register number
                         ** TK_TRIGGER: 1 -> new, 0 -> old
                         ** EP_Unlikely:  134217728 times likelihood


                         ** TK_SELECT: 1st register of result vector */
  ynVar iColumn;         /* TK_COLUMN: column index.  -1 for rowid.
                         ** TK_VARIABLE: variable number (always >= 1).
                         ** TK_SELECT_COLUMN: column of the result vector */
  i16 iAgg;              /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
  i16 iRightJoinTable;   /* If EP_FromJoin, the right table of the join */
  u8 op2;                /* TK_REGISTER/TK_TRUTH: original value of Expr.op
                         ** TK_COLUMN: the value of p5 for OP_Column
                         ** TK_AGG_FUNCTION: nesting depth */
  AggInfo *pAggInfo;     /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
  union {
    Table *pTab;           /* TK_COLUMN: Table containing column. Can be NULL
                           ** for a column of an index on an expression */
    Window *pWin;          /* TK_FUNCTION: Window definition for the func */
    struct {               /* TK_IN, TK_SELECT, and TK_EXISTS */
      int iAddr;             /* Subroutine entry address */
      int regReturn;         /* Register used to hold return address */
    } sub;
  } y;
};

................................................................................
/*
** The following are the meanings of bits in the Expr.flags field.
** Value restrictions:
**
**          EP_Agg == NC_HasAgg == SF_HasAgg
**          EP_Win == NC_HasWin
*/
#define EP_FromJoin  0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Distinct  0x000002 /* Aggregate function with DISTINCT keyword */
#define EP_HasFunc   0x000004 /* Contains one or more functions of any kind */
#define EP_FixedCol  0x000008 /* TK_Column with a known fixed value */
#define EP_Agg       0x000010 /* Contains one or more aggregate functions */
#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */
#define EP_Collate   0x000100 /* Tree contains a TK_COLLATE operator */
#define EP_Generic   0x000200 /* Ignore COLLATE or affinity on this tree */
#define EP_IntValue  0x000400 /* Integer value contained in u.iValue */
#define EP_xIsSelect 0x000800 /* x.pSelect is valid (otherwise x.pList is) */
#define EP_Skip      0x001000 /* Operator does not contribute to affinity */
#define EP_Reduced   0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
#define EP_Win       0x008000 /* Contains window functions */
#define EP_MemToken  0x010000 /* Need to sqlite3DbFree() Expr.zToken */
#define EP_NoReduce  0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
#define EP_Unlikely  0x040000 /* unlikely() or likelihood() function */
#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */
#define EP_Subquery  0x200000 /* Tree contains a TK_SELECT operator */
#define EP_Alias     0x400000 /* Is an alias for a result set column */
#define EP_Leaf      0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */
#define EP_WinFunc  0x1000000 /* TK_FUNCTION with Expr.y.pWin set */
#define EP_Subrtn   0x2000000 /* Uses Expr.y.sub. TK_IN, _SELECT, or _EXISTS */
#define EP_Quoted   0x4000000 /* TK_ID was originally quoted */
#define EP_Static   0x8000000 /* Held in memory not obtained from malloc() */
#define EP_IsTrue  0x10000000 /* Always has boolean value of TRUE */
#define EP_IsFalse 0x20000000 /* Always has boolean value of FALSE */


/*
** The EP_Propagate mask is a set of properties that automatically propagate
** upwards into parent nodes.
*/
#define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc)

................................................................................
#define EXPR_TOKENONLYSIZE      offsetof(Expr,pLeft)   /* Fewer features */

/*
** Flags passed to the sqlite3ExprDup() function. See the header comment
** above sqlite3ExprDup() for details.
*/
#define EXPRDUP_REDUCE         0x0001  /* Used reduced-size Expr nodes */









/*
** A list of expressions.  Each expression may optionally have a
** name.  An expr/name combination can be used in several ways, such
** as the list of "expr AS ID" fields following a "SELECT" or in the
** list of "ID = expr" items in an UPDATE.  A list of expressions can
** also be used as the argument to a function, in which case the a.zName
................................................................................
*/
struct ExprList {
  int nExpr;             /* Number of expressions on the list */
  struct ExprList_item { /* For each expression in the list */
    Expr *pExpr;            /* The parse tree for this expression */
    char *zName;            /* Token associated with this expression */
    char *zSpan;            /* Original text of the expression */
    u8 sortOrder;           /* 1 for DESC or 0 for ASC */
    unsigned done :1;       /* A flag to indicate when processing is finished */
    unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */
    unsigned reusable :1;   /* Constant expression is reusable */
    unsigned bSorterRef :1; /* Defer evaluation until after sorting */

    union {
      struct {
        u16 iOrderByCol;      /* For ORDER BY, column number in result set */
        u16 iAlias;           /* Index into Parse.aAlias[] for zName */
      } x;
      int iConstExprReg;      /* Register in which Expr value is cached */
    } u;
................................................................................
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
#define SF_ComplexResult  0x40000  /* Result contains subquery or function */


/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
**     SRT_Union       Store results as a key in a temporary index
................................................................................
/*
** Structure containing global configuration data for the SQLite library.
**
** This structure also contains some state information.
*/
struct Sqlite3Config {
  int bMemstat;                     /* True to enable memory status */
  int bCoreMutex;                   /* True to enable core mutexing */
  int bFullMutex;                   /* True to enable full mutexing */
  int bOpenUri;                     /* True to interpret filenames as URIs */
  int bUseCis;                      /* Use covering indices for full-scans */
  int bSmallMalloc;                 /* Avoid large memory allocations if true */

  int mxStrlen;                     /* Maximum string length */
  int neverCorrupt;                 /* Database is always well-formed */
  int szLookaside;                  /* Default lookaside buffer size */
  int nLookaside;                   /* Default lookaside buffer count */
  int nStmtSpill;                   /* Stmt-journal spill-to-disk threshold */
  sqlite3_mem_methods m;            /* Low-level memory allocation interface */
  sqlite3_mutex_methods mutex;      /* Low-level mutex interface */
................................................................................
#ifndef SQLITE_UNTESTABLE
  int (*xTestCallback)(int);        /* Invoked by sqlite3FaultSim() */
#endif
  int bLocaltimeFault;              /* True to fail localtime() calls */
  int bInternalFunctions;           /* Internal SQL functions are visible */
  int iOnceResetThreshold;          /* When to reset OP_Once counters */
  u32 szSorterRef;                  /* Min size in bytes to use sorter-refs */

};

/*
** This macro is used inside of assert() statements to indicate that
** the assert is only valid on a well-formed database.  Instead of:
**
**     assert( X );
................................................................................
struct TreeView {
  int iLevel;             /* Which level of the tree we are on */
  u8  bLine[100];         /* Draw vertical in column i if bLine[i] is true */
};
#endif /* SQLITE_DEBUG */

/*
** This object is used in various ways, all related to window functions

**
**   (1) A single instance of this structure is attached to the
**       the Expr.pWin field for each window function in an expression tree.
**       This object holds the information contained in the OVER clause,
**       plus additional fields used during code generation.
**
**   (2) All window functions in a single SELECT form a linked-list
**       attached to Select.pWin.  The Window.pFunc and Window.pExpr
**       fields point back to the expression that is the window function.
**
**   (3) The terms of the WINDOW clause of a SELECT are instances of this
**       object on a linked list attached to Select.pWinDefn.
**




** The uses (1) and (2) are really the same Window object that just happens
** to be accessible in two different ways.  Use case (3) are separate objects.
*/
struct Window {
  char *zName;            /* Name of window (may be NULL) */
  char *zBase;            /* Name of base window for chaining (may be NULL) */
  ExprList *pPartition;   /* PARTITION BY clause */
................................................................................
  u8 eFrmType;            /* TK_RANGE, TK_GROUPS, TK_ROWS, or 0 */
  u8 eStart;              /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */
  u8 eEnd;                /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */
  u8 bImplicitFrame;      /* True if frame was implicitly specified */
  u8 eExclude;            /* TK_NO, TK_CURRENT, TK_TIES, TK_GROUP, or 0 */
  Expr *pStart;           /* Expression for "<expr> PRECEDING" */
  Expr *pEnd;             /* Expression for "<expr> FOLLOWING" */

  Window *pNextWin;       /* Next window function belonging to this SELECT */
  Expr *pFilter;          /* The FILTER expression */
  FuncDef *pFunc;         /* The function */
  int iEphCsr;            /* Partition buffer or Peer buffer */
  int regAccum;
  int regResult;
  int csrApp;             /* Function cursor (used by min/max) */
  int regApp;             /* Function register (also used by min/max) */
  int regPart;            /* Array of registers for PARTITION BY values */
  Expr *pOwner;           /* Expression object this window is attached to */
  int nBufferCol;         /* Number of columns in buffer table */
  int iArgCol;            /* Offset of first argument for this function */
  int regOne;             /* Register containing constant value 1 */
  int regStartRowid;
  int regEndRowid;


};

#ifndef SQLITE_OMIT_WINDOWFUNC
SQLITE_PRIVATE void sqlite3WindowDelete(sqlite3*, Window*);

SQLITE_PRIVATE void sqlite3WindowListDelete(sqlite3 *db, Window *p);
SQLITE_PRIVATE Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*, u8);
SQLITE_PRIVATE void sqlite3WindowAttach(Parse*, Expr*, Window*);

SQLITE_PRIVATE int sqlite3WindowCompare(Parse*, Window*, Window*);
SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Window*);
SQLITE_PRIVATE void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int);
SQLITE_PRIVATE int sqlite3WindowRewrite(Parse*, Select*);
SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
SQLITE_PRIVATE void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*);
SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p);
SQLITE_PRIVATE Window *sqlite3WindowListDup(sqlite3 *db, Window *p);
................................................................................
SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*, int);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int);
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
................................................................................
#endif
SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3*);
SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int);
SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*);
SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*);
SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*);
SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*);
SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*);
SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int);
SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);
SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16);
SQLITE_PRIVATE void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
#if SQLITE_ENABLE_HIDDEN_COLUMNS
SQLITE_PRIVATE   void sqlite3ColumnPropertiesFromName(Table*, Column*);
#else
................................................................................
SQLITE_PRIVATE u32 sqlite3Utf8Read(const u8**);
SQLITE_PRIVATE LogEst sqlite3LogEst(u64);
SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst,LogEst);
#ifndef SQLITE_OMIT_VIRTUALTABLE
SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double);
#endif
#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
    defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \
    defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst);
#endif
SQLITE_PRIVATE VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int);
SQLITE_PRIVATE const char *sqlite3VListNumToName(VList*,int);
SQLITE_PRIVATE int sqlite3VListNameToNum(VList*,const char*,int);

................................................................................
SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);

SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3*);
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *, const char *);
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, int);
SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3AbsInt32(int);
#ifdef SQLITE_ENABLE_8_3_NAMES
SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*);
................................................................................
SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
SQLITE_PRIVATE void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
#ifndef SQLITE_AMALGAMATION
SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[];
SQLITE_PRIVATE const char sqlite3StrBINARY[];
SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[];
SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[];
SQLITE_PRIVATE const Token sqlite3IntTokens[];
SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config;
SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;
#ifndef SQLITE_OMIT_WSD
SQLITE_PRIVATE int sqlite3PendingByte;
#endif
#endif
#ifdef VDBE_PROFILE
................................................................................
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int);


#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*);
#endif
SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
  void (*)(sqlite3_context*,int,sqlite3_value **),
  void (*)(sqlite3_context*,int,sqlite3_value **), 
................................................................................

#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse*, Expr*);
#else
# define sqlite3ExprCheckIN(x,y) SQLITE_OK
#endif

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void);
SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue(
    Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*);
SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**);
SQLITE_PRIVATE void sqlite3Stat4ProbeFree(UnpackedRecord*);
SQLITE_PRIVATE int sqlite3Stat4Column(sqlite3*, const void*, int, int, sqlite3_value**);
SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3*, Index*, int);
#endif
................................................................................
#  define sqlite3VtabClear(Y)
#  define sqlite3VtabSync(X,Y) SQLITE_OK
#  define sqlite3VtabRollback(X)
#  define sqlite3VtabCommit(X)
#  define sqlite3VtabInSync(db) 0
#  define sqlite3VtabLock(X)
#  define sqlite3VtabUnlock(X)

#  define sqlite3VtabUnlockList(X)
#  define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK
#  define sqlite3GetVTable(X,Y)  ((VTable*)0)
#else
SQLITE_PRIVATE    void sqlite3VtabClear(sqlite3 *db, Table*);
SQLITE_PRIVATE    void sqlite3VtabDisconnect(sqlite3 *db, Table *p);
SQLITE_PRIVATE    int sqlite3VtabSync(sqlite3 *db, Vdbe*);
SQLITE_PRIVATE    int sqlite3VtabRollback(sqlite3 *db);
SQLITE_PRIVATE    int sqlite3VtabCommit(sqlite3 *db);
SQLITE_PRIVATE    void sqlite3VtabLock(VTable *);
SQLITE_PRIVATE    void sqlite3VtabUnlock(VTable *);

SQLITE_PRIVATE    void sqlite3VtabUnlockList(sqlite3*);
SQLITE_PRIVATE    int sqlite3VtabSavepoint(sqlite3 *, int, int);
SQLITE_PRIVATE    void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*);
SQLITE_PRIVATE    VTable *sqlite3GetVTable(sqlite3*, Table*);
SQLITE_PRIVATE    Module *sqlite3VtabCreateModule(
     sqlite3*,
     const char*,
................................................................................
SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = {
   SQLITE_DEFAULT_MEMSTATUS,  /* bMemstat */
   1,                         /* bCoreMutex */
   SQLITE_THREADSAFE==1,      /* bFullMutex */
   SQLITE_USE_URI,            /* bOpenUri */
   SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
   0,                         /* bSmallMalloc */

   0x7ffffffe,                /* mxStrlen */
   0,                         /* neverCorrupt */
   SQLITE_DEFAULT_LOOKASIDE,  /* szLookaside, nLookaside */
   SQLITE_STMTJRNL_SPILL,     /* nStmtSpill */
   {0,0,0,0,0,0,0,0},         /* m */
   {0,0,0,0,0,0,0,0,0},       /* mutex */
   {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */
................................................................................
#ifndef SQLITE_UNTESTABLE
   0,                         /* xTestCallback */
#endif
   0,                         /* bLocaltimeFault */
   0,                         /* bInternalFunctions */
   0x7ffffffe,                /* iOnceResetThreshold */
   SQLITE_DEFAULT_SORTERREF_SIZE,   /* szSorterRef */

};

/*
** Hash table for global functions - functions common to all
** database connections.  After initialization, this table is
** read-only.
*/
SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;

/*
** Constant tokens for values 0 and 1.
*/
SQLITE_PRIVATE const Token sqlite3IntTokens[] = {
   { "0", 1 },
   { "1", 1 }
};

#ifdef VDBE_PROFILE
/*
** The following performance counter can be used in place of
** sqlite3Hwtime() for profiling.  This is a no-op on standard builds.
*/
SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt = 0;
#endif
................................................................................
SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...);
SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*);
void sqliteVdbePopStack(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*);
SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*);
SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8);
SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int, u32*);
SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32);
SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*);
SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int);

int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *);
SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*);
SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*);
................................................................................
  return pVfs->xDlSym(pVfs, pHdle, zSym);
}
SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *pVfs, void *pHandle){
  pVfs->xDlClose(pVfs, pHandle);
}
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){






  return pVfs->xRandomness(pVfs, nByte, zBufOut);


}
SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *pVfs, int nMicro){
  return pVfs->xSleep(pVfs, nMicro);
}
SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs *pVfs){
  return pVfs->xGetLastError ? pVfs->xGetLastError(pVfs, 0, 0) : 0;
}
................................................................................
  pView = sqlite3TreeViewPush(pView, moreToFollow);
  if( p->pWith ){
    sqlite3TreeViewWith(pView, p->pWith, 1);
    cnt = 1;
    sqlite3TreeViewPush(pView, 1);
  }
  do{



    sqlite3TreeViewLine(pView,
      "SELECT%s%s (%u/%p) selFlags=0x%x nSelectRow=%d",
      ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
      ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""),
      p->selId, p, p->selFlags,
      (int)p->nSelectRow
    );

    if( cnt++ ) sqlite3TreeViewPop(pView);
    if( p->pPrior ){
      n = 1000;
    }else{
      n = 0;
      if( p->pSrc && p->pSrc->nSrc ) n++;
      if( p->pWhere ) n++;
................................................................................
      if( p->pOrderBy ) n++;
      if( p->pLimit ) n++;
#ifndef SQLITE_OMIT_WINDOWFUNC
      if( p->pWin ) n++;
      if( p->pWinDefn ) n++;
#endif
    }

    sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set");


#ifndef SQLITE_OMIT_WINDOWFUNC
    if( p->pWin ){
      Window *pX;
      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "window-functions");
      for(pX=p->pWin; pX; pX=pX->pNextWin){
        sqlite3TreeViewWinFunc(pView, pX, pX->pNextWin!=0);
................................................................................
  char zFlgs[60];
  pView = sqlite3TreeViewPush(pView, moreToFollow);
  if( pExpr==0 ){
    sqlite3TreeViewLine(pView, "nil");
    sqlite3TreeViewPop(pView);
    return;
  }
  if( pExpr->flags ){
    if( ExprHasProperty(pExpr, EP_FromJoin) ){
      sqlite3_snprintf(sizeof(zFlgs),zFlgs,"  flags=0x%x iRJT=%d",

                       pExpr->flags, pExpr->iRightJoinTable);
    }else{
      sqlite3_snprintf(sizeof(zFlgs),zFlgs,"  flags=0x%x",pExpr->flags);

    }
  }else{
    zFlgs[0] = 0;
  }
  switch( pExpr->op ){
    case TK_AGG_COLUMN: {
      sqlite3TreeViewLine(pView, "AGG{%d:%d}%s",
................................................................................
    case TK_SPAN: {
      sqlite3TreeViewLine(pView, "SPAN %Q", pExpr->u.zToken);
      sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
      break;
    }

    case TK_COLLATE: {





      sqlite3TreeViewLine(pView, "COLLATE %Q", pExpr->u.zToken);


      sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
      break;
    }

    case TK_AGG_FUNCTION:
    case TK_FUNCTION: {
      ExprList *pFarg;       /* List of function arguments */
................................................................................
#ifndef SQLITE_OMIT_WINDOWFUNC
        pWin = pExpr->y.pWin;
#else
        pWin = 0;
#endif 
      }
      if( pExpr->op==TK_AGG_FUNCTION ){
        sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q",
                             pExpr->op2, pExpr->u.zToken);
      }else{
        sqlite3TreeViewLine(pView, "FUNCTION %Q", pExpr->u.zToken);
      }
      if( pFarg ){
        sqlite3TreeViewExprList(pView, pFarg, pWin!=0, 0);
      }
#ifndef SQLITE_OMIT_WINDOWFUNC
      if( pWin ){
        sqlite3TreeViewWindow(pView, pWin, 0);
................................................................................
      sqlite3TreeViewExpr(pView, pExpr->pLeft, 1);
      sqlite3TreeViewExprList(pView, pExpr->x.pList, 0, 0);
      break;
    }
#ifndef SQLITE_OMIT_TRIGGER
    case TK_RAISE: {
      const char *zType = "unk";
      switch( pExpr->affinity ){
        case OE_Rollback:   zType = "rollback";  break;
        case OE_Abort:      zType = "abort";     break;
        case OE_Fail:       zType = "fail";      break;
        case OE_Ignore:     zType = "ignore";    break;
      }
      sqlite3TreeViewLine(pView, "RAISE %s(%Q)", zType, pExpr->u.zToken);
      break;
................................................................................
  }
  if( zBinOp ){
    sqlite3TreeViewLine(pView, "%s%s", zBinOp, zFlgs);
    sqlite3TreeViewExpr(pView, pExpr->pLeft, 1);
    sqlite3TreeViewExpr(pView, pExpr->pRight, 0);
  }else if( zUniOp ){
    sqlite3TreeViewLine(pView, "%s%s", zUniOp, zFlgs);
    sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
  }
  sqlite3TreeViewPop(pView);
}


/*
** Generate a human-readable explanation of an expression list.
................................................................................
  memcpy(&a, &x, 8);
  e = (a>>52) - 1022;
  return e*10;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */

#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
    defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \
    defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
/*
** Convert a LogEst into an integer.
**
** Note that this routine is only used when one or more of various
** non-standard compile-time options is enabled.
*/
................................................................................
  x /= 10;
  if( n>=5 ) n -= 2;
  else if( n>=1 ) n -= 1;
#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
    defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
  if( x>60 ) return (u64)LARGEST_INT64;
#else
  /* If only SQLITE_ENABLE_STAT3_OR_STAT4 is on, then the largest input
  ** possible to this routine is 310, resulting in a maximum x of 31 */
  assert( x<=60 );
#endif
  return x>=3 ? (n+8)<<(x-3) : (n+8)>>(3-x);
}
#endif /* defined SCANSTAT or STAT4 or ESTIMATED_ROWS */

................................................................................
    /*  89 */ "Offset"           OpHelp("r[P3] = sqlite_offset(P1)"),
    /*  90 */ "Column"           OpHelp("r[P3]=PX"),
    /*  91 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /*  92 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /*  93 */ "Count"            OpHelp("r[P2]=count()"),
    /*  94 */ "ReadCookie"       OpHelp(""),
    /*  95 */ "SetCookie"        OpHelp(""),
    /*  96 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
    /*  97 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
    /*  98 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
    /*  99 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
    /* 100 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
    /* 101 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
    /* 102 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
    /* 103 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
    /* 104 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
    /* 105 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
    /* 106 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /* 107 */ "BitNot"           OpHelp("r[P2]= ~r[P1]"),
    /* 108 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /* 109 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /* 110 */ "String8"          OpHelp("r[P2]='P4'"),
    /* 111 */ "OpenDup"          OpHelp(""),
    /* 112 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /* 113 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /* 114 */ "SorterOpen"       OpHelp(""),
    /* 115 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /* 116 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /* 117 */ "Close"            OpHelp(""),
    /* 118 */ "ColumnsUsed"      OpHelp(""),
    /* 119 */ "SeekHit"          OpHelp("seekHit=P2"),
    /* 120 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
................................................................................
    /* 138 */ "ResetSorter"      OpHelp(""),
    /* 139 */ "CreateBtree"      OpHelp("r[P2]=root iDb=P1 flags=P3"),
    /* 140 */ "SqlExec"          OpHelp(""),
    /* 141 */ "ParseSchema"      OpHelp(""),
    /* 142 */ "LoadAnalysis"     OpHelp(""),
    /* 143 */ "DropTable"        OpHelp(""),
    /* 144 */ "DropIndex"        OpHelp(""),
    /* 145 */ "Real"             OpHelp("r[P2]=P4"),
    /* 146 */ "DropTrigger"      OpHelp(""),
    /* 147 */ "IntegrityCk"      OpHelp(""),
    /* 148 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),

    /* 149 */ "Param"            OpHelp(""),
    /* 150 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 151 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 152 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
    /* 153 */ "AggInverse"       OpHelp("accum=r[P3] inverse(r[P2@P5])"),
    /* 154 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 155 */ "AggStep1"         OpHelp("accum=r[P3] step(r[P2@P5])"),
................................................................................

#if SQLITE_ENABLE_LOCKING_STYLE
/* # include <sys/ioctl.h> */
# include <sys/file.h>
# include <sys/param.h>
#endif /* SQLITE_ENABLE_LOCKING_STYLE */















#if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \
                           (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000))
#  if (!defined(TARGET_OS_EMBEDDED) || (TARGET_OS_EMBEDDED==0)) \
       && (!defined(TARGET_IPHONE_SIMULATOR) || (TARGET_IPHONE_SIMULATOR==0))

#    define HAVE_GETHOSTUUID 1
#  else
#    warning "gethostuuid() is disabled."

#  endif
#endif


#if OS_VXWORKS
/* # include <sys/ioctl.h> */
# include <semaphore.h>
................................................................................
  { "lstat",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osLstat      ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent)

#if defined(__linux__) && defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE)
# ifdef __ANDROID__
  { "ioctl", (sqlite3_syscall_ptr)(int(*)(int, int, ...))ioctl, 0 },

# else
  { "ioctl",         (sqlite3_syscall_ptr)ioctl,          0 },

# endif
#else
  { "ioctl",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osIoctl ((int(*)(int,int,...))aSyscall[28].pCurrent)

}; /* End of the overrideable system calls */


/*
** On some systems, calls to fchown() will trigger a message in a security
** log if they come from non-root processes.  So avoid calling fchown() if
................................................................................
                     || pInode->fileId.ino!=(u64)sStat.st_ino) ){
       pInode = pInode->pNext;
    }
    if( pInode ){
      UnixUnusedFd **pp;
      assert( sqlite3_mutex_notheld(pInode->pLockMutex) );
      sqlite3_mutex_enter(pInode->pLockMutex);

      for(pp=&pInode->pUnused; *pp && (*pp)->flags!=flags; pp=&((*pp)->pNext));
      pUnused = *pp;
      if( pUnused ){
        *pp = pUnused->pNext;
      }
      sqlite3_mutex_leave(pInode->pLockMutex);
    }
................................................................................
** corresponding database file and sets *pMode to this value. Whenever 
** possible, WAL and journal files are created using the same permissions 
** as the associated database file.
**
** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the
** original filename is unavailable.  But 8_3_NAMES is only used for
** FAT filesystems and permissions do not matter there, so just use
** the default permissions.
*/
static int findCreateFileMode(
  const char *zPath,              /* Path of file (possibly) being created */
  int flags,                      /* Flags passed as 4th argument to xOpen() */
  mode_t *pMode,                  /* OUT: Permissions to open file with */
  uid_t *pUid,                    /* OUT: uid to set on the file */
  gid_t *pGid                     /* OUT: gid to set on the file */
................................................................................
    }
    if( fd<0 ){
      int rc2 = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);
      if( rc==SQLITE_OK ) rc = rc2;
      goto open_finished;
    }

    /* If this process is running as root and if creating a new rollback
    ** journal or WAL file, set the ownership of the journal or WAL to be
    ** the same as the original database.








    */
    if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){
      robustFchown(fd, uid, gid);
    }
  }
  assert( fd>=0 );
  if( pOutFlags ){
    *pOutFlags = flags;
  }

  if( p->pPreallocatedUnused ){
    p->pPreallocatedUnused->fd = fd;
    p->pPreallocatedUnused->flags = flags;

  }

  if( isDelete ){
#if OS_VXWORKS
    zPath = zName;
#elif defined(SQLITE_UNLINK_AFTER_CLOSE)
    zPath = sqlite3_mprintf("%s", zName);
................................................................................
#ifdef SQLITE_TEST
/* simulate multiple hosts by creating unique hostid file paths */
SQLITE_API int sqlite3_hostid_num = 0;
#endif

#define PROXY_HOSTIDLEN    16  /* conch file host id length */

#ifdef HAVE_GETHOSTUUID
/* Not always defined in the headers as it ought to be */
extern int gethostuuid(uuid_t id, const struct timespec *wait);
#endif

/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN 
** bytes of writable memory.
*/
static int proxyGetHostID(unsigned char *pHostID, int *pError){
  assert(PROXY_HOSTIDLEN == sizeof(uuid_t));
  memset(pHostID, 0, PROXY_HOSTIDLEN);
#ifdef HAVE_GETHOSTUUID
  {
    struct timespec timeout = {1, 0}; /* 1 sec timeout */
    if( gethostuuid(pHostID, &timeout) ){
      int err = errno;
      if( pError ){
        *pError = err;
      }
................................................................................
      }
      return rc;
    }
    default: {
      assert( 0 );  /* The call assures that only valid opcodes are sent */
    }
  }
  /*NOTREACHED*/
  return SQLITE_ERROR;
}

/*
** Within this division (the proxying locking implementation) the procedures
** above this point are all utilities.  The lock-related methods of the
** proxy-locking sqlite3_io_method object follow.
................................................................................
  DWORD flags = FILE_MAP_WRITE | FILE_MAP_READ;
  int rc = SQLITE_OK;

  if( !pShm ){
    rc = winOpenSharedMemory(pDbFd);
    if( rc!=SQLITE_OK ) return rc;
    pShm = pDbFd->pShm;

  }
  pShmNode = pShm->pShmNode;

  sqlite3_mutex_enter(pShmNode->mutex);
  if( pShmNode->isUnlocked ){
    rc = winLockSharedMemory(pShmNode);
    if( rc!=SQLITE_OK ) goto shmpage_out;
................................................................................
      if( rc!=SQLITE_OK ){
        OSTRACE(("FETCH pid=%lu, pFile=%p, rc=%s\n",
                 osGetCurrentProcessId(), pFd, sqlite3ErrName(rc)));
        return rc;
      }
    }
    if( pFd->mmapSize >= iOff+nAmt ){

      *pp = &((u8 *)pFd->pMapRegion)[iOff];
      pFd->nFetchOut++;
    }
  }
#endif

  OSTRACE(("FETCH pid=%lu, pFile=%p, pp=%p, *pp=%p, rc=SQLITE_OK\n",
................................................................................
*/
SQLITE_PRIVATE int sqlite3PcacheInitialize(void){
  if( sqlite3GlobalConfig.pcache2.xInit==0 ){
    /* IMPLEMENTATION-OF: R-26801-64137 If the xInit() method is NULL, then the
    ** built-in default page cache is used instead of the application defined
    ** page cache. */
    sqlite3PCacheSetDefault();

  }
  return sqlite3GlobalConfig.pcache2.xInit(sqlite3GlobalConfig.pcache2.pArg);
}
SQLITE_PRIVATE void sqlite3PcacheShutdown(void){
  if( sqlite3GlobalConfig.pcache2.xShutdown ){
    /* IMPLEMENTATION-OF: R-26000-56589 The xShutdown() method may be NULL. */
    sqlite3GlobalConfig.pcache2.xShutdown(sqlite3GlobalConfig.pcache2.pArg);
................................................................................
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
  PgHdr1 *p = 0;
  void *pPg;

  assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
  if( pCache->pFree || (pCache->nPage==0 && pcache1InitBulk(pCache)) ){

    p = pCache->pFree;
    pCache->pFree = p->pNext;
    p->pNext = 0;
  }else{
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
    /* The group mutex must be released before pcache1Alloc() is called. This
    ** is because it might call sqlite3_release_memory(), which assumes that 
................................................................................
      bSync = (w.iSyncPoint==iOffset);
      testcase( bSync );
      while( iOffset<w.iSyncPoint ){
        rc = walWriteOneFrame(&w, pLast, nTruncate, iOffset);
        if( rc ) return rc;
        iOffset += szFrame;
        nExtra++;

      }
    }
    if( bSync ){
      assert( rc==SQLITE_OK );
      rc = sqlite3OsSync(w.pFd, WAL_SYNC_FLAGS(sync_flags));
    }
  }
................................................................................
  */
  iFrame = pWal->hdr.mxFrame;
  for(p=pList; p && rc==SQLITE_OK; p=p->pDirty){
    if( (p->flags & PGHDR_WAL_APPEND)==0 ) continue;
    iFrame++;
    rc = walIndexAppend(pWal, iFrame, p->pgno);
  }

  while( rc==SQLITE_OK && nExtra>0 ){
    iFrame++;
    nExtra--;
    rc = walIndexAppend(pWal, iFrame, pLast->pgno);
  }

  if( rc==SQLITE_OK ){
................................................................................
  */
  testcase( gap+2==top );
  testcase( gap+1==top );
  testcase( gap==top );
  if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){
    u8 *pSpace = pageFindSlot(pPage, nByte, &rc);
    if( pSpace ){
      assert( pSpace>=data && (pSpace - data)<65536 );
      *pIdx = (int)(pSpace - data);


      return SQLITE_OK;

    }else if( rc ){
      return rc;
    }
  }

  /* The request could not be fulfilled using a freelist slot.  Check
  ** to see if defragmentation is necessary.
................................................................................
        ){
          sqlite3_file *fd = sqlite3PagerFile(pBt->pPager);
          u8 aSave[4];
          u8 *aWrite = &pBuf[-4];
          assert( aWrite>=pBufStart );                         /* due to (6) */
          memcpy(aSave, aWrite, 4);
          rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1));

          nextPage = get4byte(aWrite);
          memcpy(aWrite, aSave, 4);
        }else
#endif

        {
          DbPage *pDbPage;
................................................................................
  assert( *pRC==SQLITE_OK );
  assert( i>=0 && i<=pPage->nCell+pPage->nOverflow );
  assert( MX_CELL(pPage->pBt)<=10921 );
  assert( pPage->nCell<=MX_CELL(pPage->pBt) || CORRUPT_DB );
  assert( pPage->nOverflow<=ArraySize(pPage->apOvfl) );
  assert( ArraySize(pPage->apOvfl)==ArraySize(pPage->aiOvfl) );
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  /* The cell should normally be sized correctly.  However, when moving a
  ** malformed cell from a leaf page to an interior page, if the cell size
  ** wanted to be less than 4 but got rounded up to 4 on the leaf, then size
  ** might be less than 8 (leaf-size + pointer) on the interior node.  Hence
  ** the term after the || in the following assert(). */
  assert( sz==pPage->xCellSize(pPage, pCell) || (sz==8 && iChild>0) );
  assert( pPage->nFree>=0 );
  if( pPage->nOverflow || sz+2>pPage->nFree ){
    if( pTemp ){
      memcpy(pTemp, pCell, sz);
      pCell = pTemp;
    }
    if( iChild ){
................................................................................
  u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager);
  u8 *pData;
  int k;                          /* Current slot in pCArray->apEnd[] */
  u8 *pSrcEnd;                    /* Current pCArray->apEnd[k] value */

  assert( i<iEnd );
  j = get2byte(&aData[hdr+5]);
  if( NEVER(j>(u32)usableSize) ){ j = 0; }
  memcpy(&pTmp[j], &aData[j], usableSize - j);

  for(k=0; pCArray->ixNx[k]<=i && ALWAYS(k<NB*2); k++){}
  pSrcEnd = pCArray->apEnd[k];

  pData = pEnd;
  while( 1/*exit by break*/ ){
................................................................................
  assert( CORRUPT_DB || pPg->hdrOffset==0 );    /* Never called on page 1 */
  if( iEnd<=iFirst ) return 0;
  for(k=0; pCArray->ixNx[k]<=i && ALWAYS(k<NB*2); k++){}
  pEnd = pCArray->apEnd[k];
  while( 1 /*Exit by break*/ ){
    int sz, rc;
    u8 *pSlot;
    sz = cachedCellSize(pCArray, i);

    if( (aData[1]==0 && aData[2]==0) || (pSlot = pageFindSlot(pPg,sz,&rc))==0 ){
      if( (pData - pBegin)<sz ) return 1;
      pData -= sz;
      pSlot = pData;
    }
    /* pSlot and pCArray->apCell[i] will never overlap on a well-formed
    ** database.  But they might for a corrupt database.  Hence use memmove()
................................................................................
    int iCell = (iOld + pPg->aiOvfl[i]) - iNew;
    if( iCell>=0 && iCell<nNew ){
      pCellptr = &pPg->aCellIdx[iCell * 2];
      if( nCell>iCell ){
        memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2);
      }
      nCell++;

      if( pageInsertArray(
            pPg, pBegin, &pData, pCellptr,
            iCell+iNew, 1, pCArray
      ) ) goto editpage_fail;
    }
  }

................................................................................
    ** This must be done in advance.  Once the balance starts, the cell
    ** offset section of the btree page will be overwritten and we will no
    ** long be able to find the cells if a pointer to each cell is not saved
    ** first.
    */
    memset(&b.szCell[b.nCell], 0, sizeof(b.szCell[0])*(limit+pOld->nOverflow));
    if( pOld->nOverflow>0 ){
      if( limit<pOld->aiOvfl[0] ){
        rc = SQLITE_CORRUPT_BKPT;
        goto balance_cleanup;
      }
      limit = pOld->aiOvfl[0];
      for(j=0; j<limit; j++){
        b.apCell[b.nCell] = aData + (maskPage & get2byteAligned(piCell));
        piCell += 2;
................................................................................
    nNew>=4 ? apNew[3]->pgno : 0, nNew>=4 ? szNew[3] : 0,
    nNew>=4 ? cntNew[3] - cntNew[2] - !leafData : 0,
    nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0,
    nNew>=5 ? cntNew[4] - cntNew[3] - !leafData : 0
  ));

  assert( sqlite3PagerIswriteable(pParent->pDbPage) );


  put4byte(pRight, apNew[nNew-1]->pgno);

  /* If the sibling pages are not leaves, ensure that the right-child pointer
  ** of the right-most new sibling page is set to the value that was 
  ** originally in the same field of the right-most old sibling page. */
  if( (pageFlags & PTF_LEAF)==0 && nOld!=nNew ){
    MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1];
................................................................................
  u8 aBalanceQuickSpace[13];
  u8 *pFree = 0;

  VVA_ONLY( int balance_quick_called = 0 );
  VVA_ONLY( int balance_deeper_called = 0 );

  do {
    int iPage = pCur->iPage;
    MemPage *pPage = pCur->pPage;

    if( NEVER(pPage->nFree<0) && btreeComputeFreeSpace(pPage) ) break;
    if( iPage==0 ){


      if( pPage->nOverflow ){
        /* The root page of the b-tree is overfull. In this case call the
        ** balance_deeper() function to create a new child for the root-page
        ** and copy the current contents of the root-page to it. The
        ** next iteration of the do-loop will balance the child page.
        */ 
        assert( balance_deeper_called==0 );
................................................................................
          pCur->apPage[0] = pPage;
          pCur->pPage = pCur->apPage[1];
          assert( pCur->pPage->nOverflow );
        }
      }else{
        break;
      }
    }else if( pPage->nOverflow==0 && pPage->nFree<=nMin ){
      break;
    }else{
      MemPage * const pParent = pCur->apPage[iPage-1];
      int const iIdx = pCur->aiIdx[iPage-1];

      rc = sqlite3PagerWrite(pParent->pDbPage);
      if( rc==SQLITE_OK && pParent->nFree<0 ){
        rc = btreeComputeFreeSpace(pParent);
................................................................................
  int nTotal = pX->nData + pX->nZero; /* Total bytes of to write */
  int rc;                             /* Return code */
  MemPage *pPage = pCur->pPage;       /* Page being written */
  BtShared *pBt;                      /* Btree */
  Pgno ovflPgno;                      /* Next overflow page to write */
  u32 ovflPageSize;                   /* Size to write on overflow page */

  if( pCur->info.pPayload + pCur->info.nLocal > pPage->aDataEnd ){


    return SQLITE_CORRUPT_BKPT;
  }
  /* Overwrite the local portion first */
  rc = btreeOverwriteContent(pPage, pCur->info.pPayload, pX,
                             0, pCur->info.nLocal);
  if( rc ) return rc;
  if( pCur->info.nLocal==nTotal ) return SQLITE_OK;
................................................................................
      goto end_insert;
    }
    oldCell = findCell(pPage, idx);
    if( !pPage->leaf ){
      memcpy(newCell, oldCell, 4);
    }
    rc = clearCell(pPage, oldCell, &info);


    if( info.nSize==szNew && info.nLocal==info.nPayload 
     && (!ISAUTOVACUUM || szNew<pPage->minLocal)
    ){
      /* Overwrite the old cell with the new if they are the same size.
      ** We could also try to do this if the old cell is smaller, then add
      ** the leftover space to the free list.  But experiments show that
      ** doing that is no faster then skipping this optimization and just
      ** calling dropCell() and insertCell(). 
      **
      ** This optimization cannot be used on an autovacuum database if the
      ** new entry uses overflow pages, as the insertCell() call below is
      ** necessary to add the PTRMAP_OVERFLOW1 pointer-map entry.  */
      assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */



      if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT;


      memcpy(oldCell, newCell, szNew);
      return SQLITE_OK;
    }
    dropCell(pPage, idx, info.nSize, &rc);
    if( rc ) goto end_insert;
  }else if( loc<0 && pPage->nCell>0 ){
    assert( pPage->leaf );
................................................................................

  /* Detach this backup from the source pager. */
  if( p->pDestDb ){
    p->pSrc->nBackup--;
  }
  if( p->isAttached ){
    pp = sqlite3PagerBackupPtr(sqlite3BtreePager(p->pSrc));

    while( *pp!=p ){
      pp = &(*pp)->pNext;

    }
    *pp = p->pNext;
  }

  /* If a transaction is still open on the Btree, roll it back. */
  sqlite3BtreeRollback(p->pDest, SQLITE_OK, 0);

................................................................................
  ** contain a valid string or blob value.  */
  assert( bPreserve==0 || pMem->flags&(MEM_Blob|MEM_Str) );
  testcase( bPreserve && pMem->z==0 );

  assert( pMem->szMalloc==0
       || pMem->szMalloc==sqlite3DbMallocSize(pMem->db, pMem->zMalloc) );
  if( pMem->szMalloc>0 && bPreserve && pMem->z==pMem->zMalloc ){

    pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n);





    bPreserve = 0;
  }else{
    if( pMem->szMalloc>0 ) sqlite3DbFreeNN(pMem->db, pMem->zMalloc);
    pMem->zMalloc = sqlite3DbMallocRaw(pMem->db, n);
  }
  if( pMem->zMalloc==0 ){
    sqlite3VdbeMemSetNull(pMem);
................................................................................
** comparison of "r1==(double)i" you sometimes get an answer of false even
** though the r1 and (double)i values are bit-for-bit the same.
*/
SQLITE_PRIVATE int sqlite3RealSameAsInt(double r1, sqlite3_int64 i){
  double r2 = (double)i;
  return r1==0.0
      || (memcmp(&r1, &r2, sizeof(r1))==0
          && i >= -2251799813685248 && i < 2251799813685248);
}

/*
** Convert pMem so that it has type MEM_Real or MEM_Int.
** Invalidate any prior representations.
**
** Every effort is made to force the conversion, even if the input
................................................................................
** Otherwise, if the second argument is non-zero, then this function is 
** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not
** already been allocated, allocate the UnpackedRecord structure that 
** that function will return to its caller here. Then return a pointer to
** an sqlite3_value within the UnpackedRecord.a[] array.
*/
static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( p ){
    UnpackedRecord *pRec = p->ppRec[0];

    if( pRec==0 ){
      Index *pIdx = p->pIdx;      /* Index being probed */
      int nByte;                  /* Bytes of space to allocate */
      int i;                      /* Counter variable */
................................................................................
    }
  
    pRec->nField = p->iVal+1;
    return &pRec->aMem[p->iVal];
  }
#else
  UNUSED_PARAMETER(p);
#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */
  return sqlite3ValueNew(db);
}

/*
** The expression object indicated by the second argument is guaranteed
** to be a scalar SQL function. If
**
................................................................................
** If the result is a text value, the sqlite3_value object uses encoding 
** enc.
**
** If the conditions above are not met, this function returns SQLITE_OK
** and sets (*ppVal) to NULL. Or, if an error occurs, (*ppVal) is set to
** NULL and an SQLite error code returned.
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static int valueFromFunction(
  sqlite3 *db,                    /* The database connection */
  Expr *p,                        /* The expression to evaluate */
  u8 enc,                         /* Encoding to use */
  u8 aff,                         /* Affinity to use */
  sqlite3_value **ppVal,          /* Write the new value here */
  struct ValueNewStat4Ctx *pCtx   /* Second argument for valueNew() */
................................................................................
  }

  *ppVal = pVal;
  return rc;
}
#else
# define valueFromFunction(a,b,c,d,e,f) SQLITE_OK
#endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */

/*
** Extract a value from the supplied expression in the manner described
** above sqlite3ValueFromExpr(). Allocate the sqlite3_value object
** using valueNew().
**
** If pCtx is NULL and an error occurs after the sqlite3_value object
................................................................................
  sqlite3_value *pVal = 0;
  int negInt = 1;
  const char *zNeg = "";
  int rc = SQLITE_OK;

  assert( pExpr!=0 );
  while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft;
#if defined(SQLITE_ENABLE_STAT3_OR_STAT4)
  if( op==TK_REGISTER ) op = pExpr->op2;
#else
  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;
#endif

  /* Compressed expressions only appear when parsing the DEFAULT clause
  ** on a table column definition, and hence only when pCtx==0.  This
................................................................................
    zVal = &pExpr->u.zToken[2];
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  else if( op==TK_FUNCTION && pCtx!=0 ){
    rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx);
  }
#endif
  else if( op==TK_TRUEFALSE ){
    pVal = valueNew(db, pCtx);
    if( pVal ){
................................................................................
    }
  }

  *ppVal = pVal;
  return rc;

no_mem:
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 || pCtx->pParse->nErr==0 )
#endif
    sqlite3OomFault(db);
  sqlite3DbFree(db, zVal);
  assert( *ppVal==0 );
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 ) sqlite3ValueFree(pVal);
#else
  assert( pCtx==0 ); sqlite3ValueFree(pVal);
#endif
  return SQLITE_NOMEM_BKPT;
}

................................................................................
  u8 enc,                   /* Encoding to use */
  u8 affinity,              /* Affinity to use */
  sqlite3_value **ppVal     /* Write the new value here */
){
  return pExpr ? valueFromExpr(db, pExpr, enc, affinity, ppVal, 0) : 0;
}

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** The implementation of the sqlite_record() function. This function accepts
** a single argument of any type. The return value is a formatted database 
** record (a blob) containing the argument value.
**
** This is used to convert the value stored in the 'sample' column of the
** sqlite_stat3 table to the record format SQLite uses internally.
*/
static void recordFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const int file_format = 1;
  u32 iSerial;                    /* Serial type */
  int nSerial;                    /* Bytes of space for iSerial as varint */
  u32 nVal;                       /* Bytes of space required for argv[0] */
  int nRet;
  sqlite3 *db;
  u8 *aRet;

  UNUSED_PARAMETER( argc );
  iSerial = sqlite3VdbeSerialType(argv[0], file_format, &nVal);
  nSerial = sqlite3VarintLen(iSerial);
  db = sqlite3_context_db_handle(context);

  nRet = 1 + nSerial + nVal;
  aRet = sqlite3DbMallocRawNN(db, nRet);
  if( aRet==0 ){
    sqlite3_result_error_nomem(context);
  }else{
    aRet[0] = nSerial+1;
    putVarint32(&aRet[1], iSerial);
    sqlite3VdbeSerialPut(&aRet[1+nSerial], argv[0], iSerial);
    sqlite3_result_blob(context, aRet, nRet, SQLITE_TRANSIENT);
    sqlite3DbFreeNN(db, aRet);
  }
}

/*
** Register built-in functions used to help read ANALYZE data.
*/
SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void){
  static FuncDef aAnalyzeTableFuncs[] = {
    FUNCTION(sqlite_record,   1, 0, 0, recordFunc),
  };
  sqlite3InsertBuiltinFuncs(aAnalyzeTableFuncs, ArraySize(aAnalyzeTableFuncs));
}

/*
** Attempt to extract a value from pExpr and use it to construct *ppVal.
**
** If pAlloc is not NULL, then an UnpackedRecord object is created for
** pAlloc if one does not exist and the new value is added to the
** UnpackedRecord object.
**
................................................................................
#endif


/*
** Change the value of the opcode, or P1, P2, P3, or P5 operands
** for a specific instruction.
*/
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe *p, u32 addr, u8 iNewOpcode){
  sqlite3VdbeGetOp(p,addr)->opcode = iNewOpcode;
}
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){
  sqlite3VdbeGetOp(p,addr)->p1 = val;
}
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){
  sqlite3VdbeGetOp(p,addr)->p2 = val;
}
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){
  sqlite3VdbeGetOp(p,addr)->p3 = val;
}
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u16 p5){
  assert( p->nOp>0 || p->db->mallocFailed );
  if( p->nOp>0 ) p->aOp[p->nOp-1].p5 = p5;
}

................................................................................
  StrAccum x;
  assert( nTemp>=20 );
  sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
  switch( pOp->p4type ){
    case P4_KEYINFO: {
      int j;
      KeyInfo *pKeyInfo = pOp->p4.pKeyInfo;
      assert( pKeyInfo->aSortOrder!=0 );
      sqlite3_str_appendf(&x, "k(%d", pKeyInfo->nKeyField);
      for(j=0; j<pKeyInfo->nKeyField; j++){
        CollSeq *pColl = pKeyInfo->aColl[j];
        const char *zColl = pColl ? pColl->zName : "";
        if( strcmp(zColl, "BINARY")==0 ) zColl = "B";
        sqlite3_str_appendf(&x, ",%s%s", 
               pKeyInfo->aSortOrder[j] ? "-" : "", zColl);


      }
      sqlite3_str_append(&x, ")", 1);
      break;
    }
#ifdef SQLITE_ENABLE_CURSOR_HINTS
    case P4_EXPR: {
      displayP4Expr(&x, pOp->p4.pExpr);
................................................................................
      ** main program. */
      pOp = &p->aOp[i];
    }else{
      /* We are currently listing subprograms.  Figure out which one and
      ** pick up the appropriate opcode. */
      int j;
      i -= p->nOp;


      for(j=0; i>=apSub[j]->nOp; j++){
        i -= apSub[j]->nOp;

      }
      pOp = &apSub[j]->aOp[i];
    }

    /* When an OP_Program opcode is encounter (the only opcode that has
    ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
    ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
................................................................................
**    N>=12 and even       (N-12)/2        BLOB
**    N>=13 and odd        (N-13)/2        text
**
** The 8 and 9 types were added in 3.3.0, file format 4.  Prior versions
** of SQLite will not understand those serial types.
*/


/*
** Return the serial-type for the value stored in pMem.
**
** This routine might convert a large MEM_IntReal value into MEM_Real.






*/
SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){
  int flags = pMem->flags;
  u32 n;

  assert( pLen!=0 );
  if( flags&MEM_Null ){
................................................................................
  n = (u32)pMem->n;
  if( flags & MEM_Zero ){
    n += pMem->u.nZero;
  }
  *pLen = n;
  return ((n*2) + 12 + ((flags&MEM_Str)!=0));
}


/*
** The sizes for serial types less than 128
*/
static const u8 sqlite3SmallTypeSizes[] = {
        /*  0   1   2   3   4   5   6   7   8   9 */   
/*   0 */   0,  1,  2,  3,  4,  6,  8,  8,  0,  0,
................................................................................
){
  UnpackedRecord *p;              /* Unpacked record to return */
  int nByte;                      /* Number of bytes required for *p */
  nByte = ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nKeyField+1);
  p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte);
  if( !p ) return 0;
  p->aMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))];
  assert( pKeyInfo->aSortOrder!=0 );
  p->pKeyInfo = pKeyInfo;
  p->nField = pKeyInfo->nKeyField + 1;
  return p;
}

/*
** Given the nKey-byte encoding of a record in pKey[], populate the 
................................................................................
  */
  /*  mem1.u.i = 0;  // not needed, here to silence compiler warning */
  
  idx1 = getVarint32(aKey1, szHdr1);
  if( szHdr1>98307 ) return SQLITE_CORRUPT;
  d1 = szHdr1;
  assert( pKeyInfo->nAllField>=pPKey2->nField || CORRUPT_DB );
  assert( pKeyInfo->aSortOrder!=0 );
  assert( pKeyInfo->nKeyField>0 );
  assert( idx1<=szHdr1 || CORRUPT_DB );
  do{
    u32 serial_type1;

    /* Read the serial types for the next element in each key. */
    idx1 += getVarint32( aKey1+idx1, serial_type1 );
................................................................................

    /* Do the comparison
    */
    rc = sqlite3MemCompare(&mem1, &pPKey2->aMem[i],
                           pKeyInfo->nAllField>i ? pKeyInfo->aColl[i] : 0);
    if( rc!=0 ){
      assert( mem1.szMalloc==0 );  /* See comment below */





      if( pKeyInfo->aSortOrder[i] ){
        rc = -rc;  /* Invert the result for DESC sort order. */
      }
      goto debugCompareEnd;
    }
    i++;
  }while( idx1<szHdr1 && i<pPKey2->nField );

................................................................................
    pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT;
    return 0;  /* Corruption */
  }

  VVA_ONLY( mem1.szMalloc = 0; ) /* Only needed by assert() statements */
  assert( pPKey2->pKeyInfo->nAllField>=pPKey2->nField 
       || CORRUPT_DB );
  assert( pPKey2->pKeyInfo->aSortOrder!=0 );
  assert( pPKey2->pKeyInfo->nKeyField>0 );
  assert( idx1<=szHdr1 || CORRUPT_DB );
  do{
    u32 serial_type;

    /* RHS is an integer */
    if( pRhs->flags & (MEM_Int|MEM_IntReal) ){
................................................................................
    /* RHS is null */
    else{
      serial_type = aKey1[idx1];
      rc = (serial_type!=0);
    }

    if( rc!=0 ){
      if( pPKey2->pKeyInfo->aSortOrder[i] ){





        rc = -rc;

      }
      assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, rc) );
      assert( mem1.szMalloc==0 );  /* See comment below */
      return rc;
    }

    i++;
................................................................................
    if( (szHdr + nStr) > nKey1 ){
      pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT;
      return 0;    /* Corruption */
    }
    nCmp = MIN( pPKey2->aMem[0].n, nStr );
    res = memcmp(&aKey1[szHdr], pPKey2->aMem[0].z, nCmp);

    if( res==0 ){




      res = nStr - pPKey2->aMem[0].n;
      if( res==0 ){
        if( pPKey2->nField>1 ){
          res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1);
        }else{
          res = pPKey2->default_rc;
          pPKey2->eqSeen = 1;
        }
      }else if( res>0 ){
        res = pPKey2->r2;
      }else{
        res = pPKey2->r1;
      }
    }else if( res>0 ){
      res = pPKey2->r2;
    }else{
      res = pPKey2->r1;
    }
  }

  assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, res)
       || CORRUPT_DB
       || pPKey2->pKeyInfo->db->mallocFailed
  );
................................................................................
  ** is an integer.
  **
  ** The easiest way to enforce this limit is to consider only records with
  ** 13 fields or less. If the first field is an integer, the maximum legal
  ** header size is (12*5 + 1 + 1) bytes.  */
  if( p->pKeyInfo->nAllField<=13 ){
    int flags = p->aMem[0].flags;
    if( p->pKeyInfo->aSortOrder[0] ){



      p->r1 = 1;
      p->r2 = -1;
    }else{
      p->r1 = -1;
      p->r2 = 1;
    }
    if( (flags & MEM_Int) ){
................................................................................
**
** OP_PureFunc means that the function must be deterministic, and should
** throw an error if it is given inputs that would make it non-deterministic.
** This routine is invoked by date/time functions that use non-deterministic
** features such as 'now'.
*/
SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context *pCtx){
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx->pVdbe==0 ) return 1;
#endif
  if( pCtx->pVdbe->aOp[pCtx->iOp].opcode==OP_PureFunc ){
    sqlite3_result_error(pCtx, 
       "non-deterministic function in index expression or CHECK constraint",
       -1);
    return 0;
................................................................................
  preupdate.v = v;
  preupdate.pCsr = pCsr;
  preupdate.op = op;
  preupdate.iNewReg = iReg;
  preupdate.keyinfo.db = db;
  preupdate.keyinfo.enc = ENC(db);
  preupdate.keyinfo.nKeyField = pTab->nCol;
  preupdate.keyinfo.aSortOrder = (u8*)&fakeSortOrder;
  preupdate.iKey1 = iKey1;
  preupdate.iKey2 = iKey2;
  preupdate.pTab = pTab;

  db->pPreUpdate = &preupdate;
  db->xPreUpdateCallback(db->pPreUpdateArg, db, op, zDb, zTbl, iKey1, iKey2);
  db->pPreUpdate = 0;
................................................................................
** is requested more than once within the same run of a single prepared
** statement, the exact same time is returned for each invocation regardless
** of the amount of time that elapses between invocations.  In other words,
** the time returned is always the time of the first call.
*/
SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
  int rc;
#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
  sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime;
  assert( p->pVdbe!=0 );
#else
  sqlite3_int64 iTime = 0;
  sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime;
#endif
  if( *piTime==0 ){
................................................................................
** auxiliary data pointers that is available to all functions within a
** single prepared statement.  The iArg values must match.
*/
SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){
  AuxData *pAuxData;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
#if SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx->pVdbe==0 ) return 0;
#else
  assert( pCtx->pVdbe!=0 );
#endif
  for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNextAux){
    if(  pAuxData->iAuxArg==iArg && (pAuxData->iAuxOp==pCtx->iOp || iArg<0) ){
      return pAuxData->pAux;
................................................................................
  void *pAux, 
  void (*xDelete)(void*)
){
  AuxData *pAuxData;
  Vdbe *pVdbe = pCtx->pVdbe;

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pVdbe==0 ) goto failed;
#else
  assert( pVdbe!=0 );
#endif

  for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNextAux){
    if( pAuxData->iAuxArg==iArg && (pAuxData->iAuxOp==pCtx->iOp || iArg<0) ){
................................................................................
**    always preferred, even if the affinity is REAL, because
**    an integer representation is more space efficient on disk.
**
** SQLITE_AFF_TEXT:
**    Convert pRec to a text representation.
**
** SQLITE_AFF_BLOB:

**    No-op.  pRec is unchanged.
*/
static void applyAffinity(
  Mem *pRec,          /* The value to apply affinity to */
  char affinity,      /* The affinity to be applied */
  u8 enc              /* Use this text encoding */
){
................................................................................
    }else if( f & MEM_Ephem ){
      c = 'e';
      assert( (f & (MEM_Static|MEM_Dyn))==0 );
    }else{
      c = 's';
    }
    *(zCsr++) = c;

    sqlite3_snprintf(100, zCsr, "%d[", pMem->n);
    zCsr += sqlite3Strlen30(zCsr);
    for(i=0; i<16 && i<pMem->n; i++){
      sqlite3_snprintf(100, zCsr, "%02X", ((int)pMem->z[i] & 0xFF));
      zCsr += sqlite3Strlen30(zCsr);
    }

    for(i=0; i<16 && i<pMem->n; i++){
      char z = pMem->z[i];
      if( z<32 || z>126 ) *zCsr++ = '.';
      else *zCsr++ = z;
    }
    *(zCsr++) = ']';
    if( f & MEM_Zero ){
      sqlite3_snprintf(100, zCsr,"+%dz",pMem->u.nZero);
................................................................................
    }else{
      zBuf[1] = 's';
    }
    k = 2;
    sqlite3_snprintf(100, &zBuf[k], "%d", pMem->n);
    k += sqlite3Strlen30(&zBuf[k]);
    zBuf[k++] = '[';
    for(j=0; j<15 && j<pMem->n; j++){
      u8 c = pMem->z[j];
      if( c>=0x20 && c<0x7f ){
        zBuf[k++] = c;
      }else{
        zBuf[k++] = '.';
      }
    }
................................................................................
** into a String opcode before it is executed for the first time.  During
** this transformation, the length of string P4 is computed and stored
** as the P1 parameter.
*/
case OP_String8: {         /* same as TK_STRING, out2 */
  assert( pOp->p4.z!=0 );
  pOut = out2Prerelease(p, pOp);
  pOp->opcode = OP_String;
  pOp->p1 = sqlite3Strlen30(pOp->p4.z);

#ifndef SQLITE_OMIT_UTF16
  if( encoding!=SQLITE_UTF8 ){
    rc = sqlite3VdbeMemSetStr(pOut, pOp->p4.z, -1, SQLITE_UTF8, SQLITE_STATIC);
    assert( rc==SQLITE_OK || rc==SQLITE_TOOBIG );
    if( rc ) goto too_big;
................................................................................
    pOp->p4.z = pOut->z;
    pOp->p1 = pOut->n;
  }
#endif
  if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){
    goto too_big;
  }

  assert( rc==SQLITE_OK );
  /* Fall through to the next case, OP_String */
}
  
/* Opcode: String P1 P2 P3 P4 P5
** Synopsis: r[P2]='P4' (len=P1)
**
................................................................................
*/
case OP_RealAffinity: {                  /* in1 */
  pIn1 = &aMem[pOp->p1];
  if( pIn1->flags & (MEM_Int|MEM_IntReal) ){
    testcase( pIn1->flags & MEM_Int );
    testcase( pIn1->flags & MEM_IntReal );
    sqlite3VdbeMemRealify(pIn1);

  }
  break;
}
#endif

#ifndef SQLITE_OMIT_CAST
/* Opcode: Cast P1 P2 * * *
................................................................................
    idx = aPermute ? aPermute[i] : i;
    assert( memIsValid(&aMem[p1+idx]) );
    assert( memIsValid(&aMem[p2+idx]) );
    REGISTER_TRACE(p1+idx, &aMem[p1+idx]);
    REGISTER_TRACE(p2+idx, &aMem[p2+idx]);
    assert( i<pKeyInfo->nKeyField );
    pColl = pKeyInfo->aColl[i];
    bRev = pKeyInfo->aSortOrder[i];
    iCompare = sqlite3MemCompare(&aMem[p1+idx], &aMem[p2+idx], pColl);
    if( iCompare ){





      if( bRev ) iCompare = -iCompare;
      break;
    }
  }
  break;
}

................................................................................
**
** The value extracted is stored in register P3.
**
** If the record contains fewer than P2 fields, then extract a NULL.  Or,
** if the P4 argument is a P4_MEM use the value of the P4 argument as
** the result.
**
** If the OPFLAG_CLEARCACHE bit is set on P5 and P1 is a pseudo-table cursor,
** then the cache of the cursor is reset prior to extracting the column.
** The first OP_Column against a pseudo-table after the value of the content
** register has changed should have this bit set.
**
** If the OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG bits are set on P5 then
** the result is guaranteed to only be used as the argument of a length()
** or typeof() function, respectively.  The loading of large blobs can be
** skipped for length() and all content loading can be skipped for typeof().
*/
case OP_Column: {
  int p2;            /* column number to retrieve */
................................................................................
  const char *zAffinity;   /* The affinity to be applied */

  zAffinity = pOp->p4.z;
  assert( zAffinity!=0 );
  assert( pOp->p2>0 );
  assert( zAffinity[pOp->p2]==0 );
  pIn1 = &aMem[pOp->p1];
  while( 1 /*edit-by-break*/ ){
    assert( pIn1 <= &p->aMem[(p->nMem+1 - p->nCursor)] );
    assert( memIsValid(pIn1) );
    applyAffinity(pIn1, zAffinity[0], encoding);
    if( zAffinity[0]==SQLITE_AFF_REAL && (pIn1->flags & MEM_Int)!=0 ){
      /* When applying REAL affinity, if the result is still MEM_Int, 
      ** indicate that REAL is actually desired */







      pIn1->flags |= MEM_IntReal;
      pIn1->flags &= ~MEM_Int;





    }
    REGISTER_TRACE((int)(pIn1-aMem), pIn1);
    zAffinity++;
    if( zAffinity[0]==0 ) break;
    pIn1++;
  }
  break;
................................................................................
      pLast--;
      nField--;
    }
  }
#endif

  /* Loop through the elements that will make up the record to figure
  ** out how much space is required for the new record.























  */
  pRec = pLast;
  do{
    assert( memIsValid(pRec) );
    serial_type = sqlite3VdbeSerialType(pRec, file_format, &len);
    if( pRec->flags & MEM_Zero ){
      if( serial_type==0 ){
        /* Values with MEM_Null and MEM_Zero are created by xColumn virtual
        ** table methods that never invoke sqlite3_result_xxxxx() while
        ** computing an unchanging column value in an UPDATE statement.
        ** Give such values a special internal-use-only serial-type of 10
        ** so that they can be passed through to xUpdate and have
        ** a true sqlite3_value_nochange(). */
        assert( pOp->p5==OPFLAG_NOCHNG_MAGIC || CORRUPT_DB );

































































        serial_type = 10;
      }else if( nData ){
        if( sqlite3VdbeMemExpandBlob(pRec) ) goto no_mem;

      }else{
        nZero += pRec->u.nZero;
        len -= pRec->u.nZero;
      }
    }
    nData += len;
    testcase( serial_type==127 );
    testcase( serial_type==128 );
    nHdr += serial_type<=127 ? 1 : sqlite3VarintLen(serial_type);
    pRec->uTemp = serial_type;

    if( pRec==pData0 ) break;
    pRec--;
  }while(1);

  /* EVIDENCE-OF: R-22564-11647 The header begins with a single varint
  ** which determines the total number of bytes in the header. The varint
  ** value is the size of the header in bytes including the size varint
................................................................................
        (!desiredAutoCommit)?"cannot start a transaction within a transaction":(
        (iRollback)?"cannot rollback - no transaction is active":
                   "cannot commit - no transaction is active"));
         
    rc = SQLITE_ERROR;
    goto abort_due_to_error;
  }
  break;
}

/* Opcode: Transaction P1 P2 P3 P4 P5
**
** Begin a transaction on database P1 if a transaction is not already
** active.
** If P2 is non-zero, then a write-transaction is started, or if a 
................................................................................
#ifdef SQLITE_DEBUG
  pC->seekOp = pOp->opcode;
#endif

  pC->deferredMoveto = 0;
  pC->cacheStatus = CACHE_STALE;
  if( pC->isTable ){

    /* The BTREE_SEEK_EQ flag is only set on index cursors */
    assert( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ)==0
              || CORRUPT_DB );

    /* The input value in P3 might be of any type: integer, real, string,
    ** blob, or NULL.  But it needs to be an integer before we can do
    ** the seek, so convert it. */
    pIn3 = &aMem[pOp->p3];

    if( (pIn3->flags & (MEM_Int|MEM_Real|MEM_IntReal|MEM_Str))==MEM_Str ){
      applyNumericAffinity(pIn3, 0);
    }
    iKey = sqlite3VdbeIntValue(pIn3);



    /* If the P3 value could not be converted into an integer without
    ** loss of information, then special processing is required... */
    if( (pIn3->flags & (MEM_Int|MEM_IntReal))==0 ){
      if( (pIn3->flags & MEM_Real)==0 ){
        if( (pIn3->flags & MEM_Null) || oc>=OP_SeekGE ){
          VdbeBranchTaken(1,2); goto jump_to_p2;
          break;

        }else{
          rc = sqlite3BtreeLast(pC->uc.pCursor, &res);
          if( rc!=SQLITE_OK ) goto abort_due_to_error;
          goto seek_not_found;
        }
      }else

................................................................................
  assert( pOp->opcode!=OP_Next || pOp->p4.xAdvance==sqlite3BtreeNext );
  assert( pOp->opcode!=OP_Prev || pOp->p4.xAdvance==sqlite3BtreePrevious );

  /* The Next opcode is only used after SeekGT, SeekGE, Rewind, and Found.
  ** The Prev opcode is only used after SeekLT, SeekLE, and Last. */
  assert( pOp->opcode!=OP_Next
       || pC->seekOp==OP_SeekGT || pC->seekOp==OP_SeekGE
       || pC->seekOp==OP_Rewind || pC->seekOp==OP_Found 
       || pC->seekOp==OP_NullRow|| pC->seekOp==OP_SeekRowid);

  assert( pOp->opcode!=OP_Prev
       || pC->seekOp==OP_SeekLT || pC->seekOp==OP_SeekLE
       || pC->seekOp==OP_Last 
       || pC->seekOp==OP_NullRow);

  rc = pOp->p4.xAdvance(pC->uc.pCursor, pOp->p3);
next_tail:
  pC->cacheStatus = CACHE_STALE;
  VdbeBranchTaken(rc==SQLITE_OK,2);
  if( rc==SQLITE_OK ){
................................................................................
  {
    zMaster = MASTER_NAME;
    initData.db = db;
    initData.iDb = iDb;
    initData.pzErrMsg = &p->zErrMsg;
    initData.mInitFlags = 0;
    zSql = sqlite3MPrintf(db,
       "SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid",
       db->aDb[iDb].zDbSName, zMaster, pOp->p4.z);
    if( zSql==0 ){
      rc = SQLITE_NOMEM_BKPT;
    }else{
      assert( db->init.busy==0 );
      db->init.busy = 1;
      initData.rc = SQLITE_OK;
................................................................................
*/
SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){
  Incrblob *p = (Incrblob *)pBlob;
  int rc;
  sqlite3 *db;

  if( p ){

    db = p->db;
    sqlite3_mutex_enter(db->mutex);
    rc = sqlite3_finalize(p->pStmt);
    sqlite3DbFree(db, p);
    sqlite3_mutex_leave(db->mutex);

  }else{
    rc = SQLITE_OK;
  }
  return rc;
}

/*
................................................................................
  if( res==0 ){
    if( pTask->pSorter->pKeyInfo->nKeyField>1 ){
      res = vdbeSorterCompareTail(
          pTask, pbKey2Cached, pKey1, nKey1, pKey2, nKey2
      );
    }
  }else{

    if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){
      res = res * -1;
    }
  }

  return res;
}

................................................................................

  if( res==0 ){
    if( pTask->pSorter->pKeyInfo->nKeyField>1 ){
      res = vdbeSorterCompareTail(
          pTask, pbKey2Cached, pKey1, nKey1, pKey2, nKey2
      );
    }
  }else if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){

    res = res * -1;
  }

  return res;
}

/*
................................................................................
        pSorter->list.aMemory = (u8*)sqlite3Malloc(pgsz);
        if( !pSorter->list.aMemory ) rc = SQLITE_NOMEM_BKPT;
      }
    }

    if( pKeyInfo->nAllField<13 
     && (pKeyInfo->aColl[0]==0 || pKeyInfo->aColl[0]==db->pDfltColl)

    ){
      pSorter->typeMask = SORTER_TYPE_INTEGER | SORTER_TYPE_TEXT;
    }
  }

  return rc;
}
................................................................................

  if( rc==SQLITE_OK ){
    if( i==nWorker ){
      /* Use the foreground thread for this operation */
      rc = vdbeSorterListToPMA(&pSorter->aTask[nWorker], &pSorter->list);
    }else{
      /* Launch a background thread for this operation */
      u8 *aMem = pTask->list.aMemory;
      void *pCtx = (void*)pTask;


      assert( pTask->pThread==0 && pTask->bDone==0 );
      assert( pTask->list.pList==0 );
      assert( pTask->list.aMemory==0 || pSorter->list.aMemory!=0 );



      pSorter->iPrev = (u8)(pTask - pSorter->aTask);
      pTask->list = pSorter->list;
      pSorter->list.pList = 0;
      pSorter->list.szPMA = 0;
      if( aMem ){
        pSorter->list.aMemory = aMem;
        pSorter->nMemory = sqlite3MallocSize(aMem);
................................................................................
){
  MemJournal *p = (MemJournal *)pJfd;
  u8 *zOut = zBuf;
  int nRead = iAmt;
  int iChunkOffset;
  FileChunk *pChunk;

#if defined(SQLITE_ENABLE_ATOMIC_WRITE) \
 || defined(SQLITE_ENABLE_BATCH_ATOMIC_WRITE)
  if( (iAmt+iOfst)>p->endpoint.iOffset ){
    return SQLITE_IOERR_SHORT_READ;
  }
#endif

  assert( (iAmt+iOfst)<=p->endpoint.iOffset );
  assert( p->readpoint.iOffset==0 || p->readpoint.pChunk!=0 );
  if( p->readpoint.iOffset!=iOfst || iOfst==0 ){
    sqlite3_int64 iOff = 0;
    for(pChunk=p->pFirst; 
        ALWAYS(pChunk) && (iOff+p->nChunkSize)<=iOfst;
        pChunk=pChunk->pNext
    ){
................................................................................
/*
** Walk all expressions linked into the list of Window objects passed
** as the second argument.
*/
static int walkWindowList(Walker *pWalker, Window *pList){
  Window *pWin;
  for(pWin=pList; pWin; pWin=pWin->pNextWin){

    if( sqlite3WalkExprList(pWalker, pWin->pOrderBy) ) return WRC_Abort;

    if( sqlite3WalkExprList(pWalker, pWin->pPartition) ) return WRC_Abort;

    if( sqlite3WalkExpr(pWalker, pWin->pFilter) ) return WRC_Abort;










  }
  return WRC_Continue;
}
#endif

/*
** Walk an expression tree.  Invoke the callback once for each node
................................................................................
  while(1){
    rc = pWalker->xExprCallback(pWalker, pExpr);
    if( rc ) return rc & WRC_Abort;
    if( !ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){
      if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
       assert( pExpr->x.pList==0 || pExpr->pRight==0 );
      if( pExpr->pRight ){

        pExpr = pExpr->pRight;
        continue;
      }else if( ExprHasProperty(pExpr, EP_xIsSelect) ){

        if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort;

      }else if( pExpr->x.pList ){
        if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort;
      }
#ifndef SQLITE_OMIT_WINDOWFUNC
      if( ExprHasProperty(pExpr, EP_WinFunc) ){
        if( walkWindowList(pWalker, pExpr->y.pWin) ) return WRC_Abort;
      }
#endif

    }
    break;
  }
  return WRC_Continue;
}
SQLITE_PRIVATE int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){
  return pExpr ? walkExpr(pWalker,pExpr) : WRC_Continue;
................................................................................
  if( sqlite3WalkExpr(pWalker, p->pHaving) ) return WRC_Abort;
  if( sqlite3WalkExprList(pWalker, p->pOrderBy) ) return WRC_Abort;
  if( sqlite3WalkExpr(pWalker, p->pLimit) ) return WRC_Abort;
#if !defined(SQLITE_OMIT_WINDOWFUNC) && !defined(SQLITE_OMIT_ALTERTABLE)
  {
    Parse *pParse = pWalker->pParse;
    if( pParse && IN_RENAME_OBJECT ){


      int rc = walkWindowList(pWalker, p->pWinDefn);
      assert( rc==WRC_Continue );
      return rc;
    }
  }
#endif
  return WRC_Continue;
}

................................................................................
    ExprSetProperty(pExpr, EP_Static);
    sqlite3ExprDelete(db, pExpr);
    memcpy(pExpr, pDup, sizeof(*pExpr));
    if( !ExprHasProperty(pExpr, EP_IntValue) && pExpr->u.zToken!=0 ){
      assert( (pExpr->flags & (EP_Reduced|EP_TokenOnly))==0 );
      pExpr->u.zToken = sqlite3DbStrDup(db, pExpr->u.zToken);
      pExpr->flags |= EP_MemToken;







    }
    sqlite3DbFree(db, pDup);
  }
  ExprSetProperty(pExpr, EP_Alias);
}


................................................................................
              ExprSetProperty(pExpr, EP_Alias);
            }
          }else
#endif /* SQLITE_OMIT_UPSERT */
          {
#ifndef SQLITE_OMIT_TRIGGER
            if( iCol<0 ){
              pExpr->affinity = SQLITE_AFF_INTEGER;
            }else if( pExpr->iTable==0 ){
              testcase( iCol==31 );
              testcase( iCol==32 );
              pParse->oldmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<<iCol));
            }else{
              testcase( iCol==31 );
              testcase( iCol==32 );
................................................................................
     && pMatch
     && (pNC->ncFlags & NC_IdxExpr)==0
     && sqlite3IsRowid(zCol)
     && VisibleRowid(pMatch->pTab)
    ){
      cnt = 1;
      pExpr->iColumn = -1;
      pExpr->affinity = SQLITE_AFF_INTEGER;
    }

    /*
    ** If the input is of the form Z (not Y.Z or X.Y.Z) then the name Z
    ** might refer to an result-set alias.  This happens, for example, when
    ** we are resolving names in the WHERE clause of the following command:
    **
................................................................................
      assert( pSrcList && pSrcList->nSrc==1 );
      pItem = pSrcList->a;
      assert( HasRowid(pItem->pTab) && pItem->pTab->pSelect==0 );
      pExpr->op = TK_COLUMN;
      pExpr->y.pTab = pItem->pTab;
      pExpr->iTable = pItem->iCursor;
      pExpr->iColumn = -1;
      pExpr->affinity = SQLITE_AFF_INTEGER;
      break;
    }
#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT)
          && !defined(SQLITE_OMIT_SUBQUERY) */

    /* A column name:                    ID
    ** Or table name and column name:    ID.ID
................................................................................
      int wrong_num_args = 0;     /* True if wrong number of arguments */
      int is_agg = 0;             /* True if is an aggregate function */
      int nId;                    /* Number of characters in function name */
      const char *zId;            /* The function name. */
      FuncDef *pDef;              /* Information about the function */
      u8 enc = ENC(pParse->db);   /* The database encoding */
      int savedAllowFlags = (pNC->ncFlags & (NC_AllowAgg | NC_AllowWin));



      assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
      zId = pExpr->u.zToken;
      nId = sqlite3Strlen30(zId);
      pDef = sqlite3FindFunction(pParse->db, zId, n, enc, 0);
      if( pDef==0 ){
        pDef = sqlite3FindFunction(pParse->db, zId, -2, enc, 0);
        if( pDef==0 ){
................................................................................
         && pParse->nested==0
         && sqlite3Config.bInternalFunctions==0
        ){
          /* Internal-use-only functions are disallowed unless the
          ** SQL is being compiled using sqlite3NestedParse() */
          no_such_func = 1;
          pDef = 0;









        }
      }

      if( 0==IN_RENAME_OBJECT ){
#ifndef SQLITE_OMIT_WINDOWFUNC
        assert( is_agg==0 || (pDef->funcFlags & SQLITE_FUNC_MINMAX)
          || (pDef->xValue==0 && pDef->xInverse==0)
          || (pDef->xValue && pDef->xInverse && pDef->xSFunc && pDef->xFinalize)
        );
        if( pDef && pDef->xValue==0 && ExprHasProperty(pExpr, EP_WinFunc) ){
          sqlite3ErrorMsg(pParse, 
              "%.*s() may not be used as a window function", nId, zId
          );
          pNC->nErr++;
        }else if( 
              (is_agg && (pNC->ncFlags & NC_AllowAgg)==0)
           || (is_agg && (pDef->funcFlags&SQLITE_FUNC_WINDOW) && !pExpr->y.pWin)
           || (is_agg && pExpr->y.pWin && (pNC->ncFlags & NC_AllowWin)==0)
        ){
          const char *zType;
          if( (pDef->funcFlags & SQLITE_FUNC_WINDOW) || pExpr->y.pWin ){
            zType = "window";
          }else{
            zType = "aggregate";
          }
          sqlite3ErrorMsg(pParse, "misuse of %s function %.*s()",zType,nId,zId);
          pNC->nErr++;
          is_agg = 0;
................................................................................
          sqlite3ErrorMsg(pParse, "no such function: %.*s", nId, zId);
          pNC->nErr++;
        }else if( wrong_num_args ){
          sqlite3ErrorMsg(pParse,"wrong number of arguments to function %.*s()",
               nId, zId);
          pNC->nErr++;
        }









        if( is_agg ){
          /* Window functions may not be arguments of aggregate functions.
          ** Or arguments of other window functions. But aggregate functions
          ** may be arguments for window functions.  */
#ifndef SQLITE_OMIT_WINDOWFUNC
          pNC->ncFlags &= ~(NC_AllowWin | (!pExpr->y.pWin ? NC_AllowAgg : 0));
#else
          pNC->ncFlags &= ~NC_AllowAgg;
#endif
        }
      }





      sqlite3WalkExprList(pWalker, pList);
      if( is_agg ){
#ifndef SQLITE_OMIT_WINDOWFUNC
        if( pExpr->y.pWin ){
          Select *pSel = pNC->pWinSelect;

          if( IN_RENAME_OBJECT==0 ){
            sqlite3WindowUpdate(pParse, pSel->pWinDefn, pExpr->y.pWin, pDef);
          }
          sqlite3WalkExprList(pWalker, pExpr->y.pWin->pPartition);
          sqlite3WalkExprList(pWalker, pExpr->y.pWin->pOrderBy);
          sqlite3WalkExpr(pWalker, pExpr->y.pWin->pFilter);
          if( 0==pSel->pWin 
           || 0==sqlite3WindowCompare(pParse, pSel->pWin, pExpr->y.pWin) 
          ){
            pExpr->y.pWin->pNextWin = pSel->pWin;
            pSel->pWin = pExpr->y.pWin;
          }
          pNC->ncFlags |= NC_HasWin;
        }else
#endif /* SQLITE_OMIT_WINDOWFUNC */
        {
          NameContext *pNC2 = pNC;
          pExpr->op = TK_AGG_FUNCTION;
          pExpr->op2 = 0;





          while( pNC2 && !sqlite3FunctionUsesThisSrc(pExpr, pNC2->pSrcList) ){
            pExpr->op2++;
            pNC2 = pNC2->pNext;
          }
          assert( pDef!=0 );
          if( pNC2 ){
            assert( SQLITE_FUNC_MINMAX==NC_MinMaxAgg );
            testcase( (pDef->funcFlags & SQLITE_FUNC_MINMAX)!=0 );
            pNC2->ncFlags |= NC_HasAgg | (pDef->funcFlags & SQLITE_FUNC_MINMAX);

          }
        }
        pNC->ncFlags |= savedAllowFlags;
................................................................................
    }
    case TK_VARIABLE: {
      notValid(pParse, pNC, "parameters", NC_IsCheck|NC_PartIdx|NC_IdxExpr);
      break;
    }
    case TK_IS:
    case TK_ISNOT: {
      Expr *pRight = sqlite3ExprSkipCollate(pExpr->pRight);
      assert( !ExprHasProperty(pExpr, EP_Reduced) );
      /* Handle special cases of "x IS TRUE", "x IS FALSE", "x IS NOT TRUE",
      ** and "x IS NOT FALSE". */
      if( pRight->op==TK_ID ){
        int rc = resolveExprStep(pWalker, pRight);
        if( rc==WRC_Abort ) return WRC_Abort;
        if( pRight->op==TK_TRUEFALSE ){
................................................................................
    moreToDo = 0;
    pEList = pSelect->pEList;
    assert( pEList!=0 );
    for(i=0, pItem=pOrderBy->a; i<pOrderBy->nExpr; i++, pItem++){
      int iCol = -1;
      Expr *pE, *pDup;
      if( pItem->done ) continue;
      pE = sqlite3ExprSkipCollate(pItem->pExpr);
      if( sqlite3ExprIsInteger(pE, &iCol) ){
        if( iCol<=0 || iCol>pEList->nExpr ){
          resolveOutOfRangeError(pParse, "ORDER", i+1, pEList->nExpr);
          return 1;
        }
      }else{
        iCol = resolveAsName(pParse, pEList, pE);
................................................................................
  const char *zType     /* "ORDER" or "GROUP" */
){
  int i;
  sqlite3 *db = pParse->db;
  ExprList *pEList;
  struct ExprList_item *pItem;

  if( pOrderBy==0 || pParse->db->mallocFailed ) return 0;
  if( pOrderBy->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){
    sqlite3ErrorMsg(pParse, "too many terms in %s BY clause", zType);
    return 1;
  }
  pEList = pSelect->pEList;
  assert( pEList!=0 );  /* sqlite3SelectNew() guarantees this */
  for(i=0, pItem=pOrderBy->a; i<pOrderBy->nExpr; i++, pItem++){
................................................................................
    }
  }
  return 0;
}

#ifndef SQLITE_OMIT_WINDOWFUNC
/*
** Walker callback for resolveRemoveWindows().
*/
static int resolveRemoveWindowsCb(Walker *pWalker, Expr *pExpr){

  if( ExprHasProperty(pExpr, EP_WinFunc) ){
    Window **pp;
    for(pp=&pWalker->u.pSelect->pWin; *pp; pp=&(*pp)->pNextWin){
      if( *pp==pExpr->y.pWin ){
        *pp = (*pp)->pNextWin;
        break;
      }    
    }
  }
  return WRC_Continue;
}

/*
** Remove any Window objects owned by the expression pExpr from the
** Select.pWin list of Select object pSelect.
*/
static void resolveRemoveWindows(Select *pSelect, Expr *pExpr){

  Walker sWalker;
  memset(&sWalker, 0, sizeof(Walker));
  sWalker.xExprCallback = resolveRemoveWindowsCb;
  sWalker.u.pSelect = pSelect;
  sqlite3WalkExpr(&sWalker, pExpr);
}

#else
# define resolveRemoveWindows(x,y)
#endif



/*
** pOrderBy is an ORDER BY or GROUP BY clause in SELECT statement pSelect.
** The Name context of the SELECT statement is pNC.  zType is either
** "ORDER" or "GROUP" depending on which type of clause pOrderBy is.
**
** This routine resolves each term of the clause into an expression.
................................................................................
  int nResult;                   /* Number of terms in the result set */

  if( pOrderBy==0 ) return 0;
  nResult = pSelect->pEList->nExpr;
  pParse = pNC->pParse;
  for(i=0, pItem=pOrderBy->a; i<pOrderBy->nExpr; i++, pItem++){
    Expr *pE = pItem->pExpr;
    Expr *pE2 = sqlite3ExprSkipCollate(pE);
    if( zType[0]!='G' ){
      iCol = resolveAsName(pParse, pSelect->pEList, pE2);
      if( iCol>0 ){
        /* If an AS-name match is found, mark this ORDER BY column as being
        ** a copy of the iCol-th result-set column.  The subsequent call to
        ** sqlite3ResolveOrderGroupBy() will convert the expression to a
        ** copy of the iCol-th result-set expression. */
................................................................................
      return 1;
    }
    for(j=0; j<pSelect->pEList->nExpr; j++){
      if( sqlite3ExprCompare(0, pE, pSelect->pEList->a[j].pExpr, -1)==0 ){
        /* Since this expresion is being changed into a reference
        ** to an identical expression in the result set, remove all Window
        ** objects belonging to the expression from the Select.pWin list. */
        resolveRemoveWindows(pSelect, pE);
        pItem->u.x.iOrderByCol = j+1;
      }
    }
  }
  return sqlite3ResolveOrderGroupBy(pParse, pSelect, pOrderBy, zType);
}

................................................................................
** CREATE TABLE t1(a);
** SELECT * FROM t1 WHERE a;
** SELECT a AS b FROM t1 WHERE b;
** SELECT * FROM t1 WHERE (select a from t1);
*/
SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){
  int op;
  if( pExpr->flags & EP_Generic ) return 0;
  while( ExprHasProperty(pExpr, EP_Skip) ){
    assert( pExpr->op==TK_COLLATE );
    pExpr = pExpr->pLeft;
    assert( pExpr!=0 );
  }
  op = pExpr->op;
  if( op==TK_SELECT ){
................................................................................
  }
  if( op==TK_SELECT_COLUMN ){
    assert( pExpr->pLeft->flags&EP_xIsSelect );
    return sqlite3ExprAffinity(
        pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr
    );
  }
  return pExpr->affinity;
}

/*
** Set the collating sequence for expression pExpr to be the collating
** sequence named by pToken.   Return a pointer to a new Expr node that
** implements the COLLATE operator.
**
................................................................................
  Token s;
  assert( zC!=0 );
  sqlite3TokenInit(&s, (char*)zC);
  return sqlite3ExprAddCollateToken(pParse, pExpr, &s, 0);
}

/*
** Skip over any TK_COLLATE operators and any unlikely()
** or likelihood() function at the root of an expression.
*/
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){













  while( pExpr && ExprHasProperty(pExpr, EP_Skip|EP_Unlikely) ){
    if( ExprHasProperty(pExpr, EP_Unlikely) ){
      assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
      assert( pExpr->x.pList->nExpr>0 );
      assert( pExpr->op==TK_FUNCTION );
      pExpr = pExpr->x.pList->a[0].pExpr;
    }else{
................................................................................
*/
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
  sqlite3 *db = pParse->db;
  CollSeq *pColl = 0;
  Expr *p = pExpr;
  while( p ){
    int op = p->op;
    if( p->flags & EP_Generic ) break;
    if( op==TK_REGISTER ) op = p->op2;
    if( (op==TK_AGG_COLUMN || op==TK_COLUMN || op==TK_TRIGGER)
     && p->y.pTab!=0
    ){
      /* op==TK_REGISTER && p->y.pTab!=0 happens when pExpr was originally
      ** a TK_COLUMN but was previously evaluated and cached in a register */
      int j = p->iColumn;
................................................................................
/*
** pExpr is an operand of a comparison operator.  aff2 is the
** type affinity of the other operand.  This routine returns the
** type affinity that should be used for the comparison operator.
*/
SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){
  char aff1 = sqlite3ExprAffinity(pExpr);
  if( aff1 && aff2 ){
    /* Both sides of the comparison are columns. If one has numeric
    ** affinity, use that. Otherwise use no affinity.
    */
    if( sqlite3IsNumericAffinity(aff1) || sqlite3IsNumericAffinity(aff2) ){
      return SQLITE_AFF_NUMERIC;
    }else{
      return SQLITE_AFF_BLOB;
    }
  }else if( !aff1 && !aff2 ){
    /* Neither side of the comparison is a column.  Compare the
    ** results directly.
    */
    return SQLITE_AFF_BLOB;
  }else{
    /* One side is a column, the other is not. Use the columns affinity. */
    assert( aff1==0 || aff2==0 );
    return (aff1 + aff2);


  }
}

/*
** pExpr is a comparison operator.  Return the type affinity that should
** be applied to both operands prior to doing the comparison.
*/
................................................................................
** pExpr is a comparison expression, eg. '=', '<', IN(...) etc.
** idx_affinity is the affinity of an indexed column. Return true
** if the index with affinity idx_affinity may be used to implement
** the comparison in pExpr.
*/
SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
  char aff = comparisonAffinity(pExpr);
  switch( aff ){
    case SQLITE_AFF_BLOB:
      return 1;

    case SQLITE_AFF_TEXT:
      return idx_affinity==SQLITE_AFF_TEXT;
    default:
      return sqlite3IsNumericAffinity(idx_affinity);
  }

}

/*
** Return the P5 value that should be used for a binary comparison
** opcode (OP_Eq, OP_Ge etc.) used to compare pExpr1 and pExpr2.
*/
static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){
................................................................................
  if( pLeft==0  ){
    return pRight;
  }else if( pRight==0 ){
    return pLeft;
  }else if( ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight) ){
    sqlite3ExprUnmapAndDelete(pParse, pLeft);
    sqlite3ExprUnmapAndDelete(pParse, pRight);
    return sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[0], 0);
  }else{
    return sqlite3PExpr(pParse, TK_AND, pLeft, pRight);
  }
}

/*
** Construct a new expression node for a function with multiple
................................................................................
  }
#endif
  if( !ExprHasProperty(p, (EP_TokenOnly|EP_Leaf)) ){
    /* The Expr.x union is never used at the same time as Expr.pRight */
    assert( p->x.pList==0 || p->pRight==0 );
    if( p->pLeft && p->op!=TK_SELECT_COLUMN ) sqlite3ExprDeleteNN(db, p->pLeft);
    if( p->pRight ){

      sqlite3ExprDeleteNN(db, p->pRight);
    }else if( ExprHasProperty(p, EP_xIsSelect) ){

      sqlite3SelectDelete(db, p->x.pSelect);
    }else{
      sqlite3ExprListDelete(db, p->x.pList);
    }

    if( ExprHasProperty(p, EP_WinFunc) ){
      assert( p->op==TK_FUNCTION );
      sqlite3WindowDelete(db, p->y.pWin);


    }
  }
  if( ExprHasProperty(p, EP_MemToken) ) sqlite3DbFree(db, p->u.zToken);
  if( !ExprHasProperty(p, EP_Static) ){
    sqlite3DbFreeNN(db, p);
  }
}
................................................................................
*/
static int exprStructSize(Expr *p){
  if( ExprHasProperty(p, EP_TokenOnly) ) return EXPR_TOKENONLYSIZE;
  if( ExprHasProperty(p, EP_Reduced) ) return EXPR_REDUCEDSIZE;
  return EXPR_FULLSIZE;
}

/*
** Copy the complete content of an Expr node, taking care not to read
** past the end of the structure for a reduced-size version of the source
** Expr.
*/
static void exprNodeCopy(Expr *pDest, Expr *pSrc){
  memset(pDest, 0, sizeof(Expr));
  memcpy(pDest, pSrc, exprStructSize(pSrc));
}

/*
** The dupedExpr*Size() routines each return the number of bytes required
** to store a copy of an expression or expression tree.  They differ in
** how much of the tree is measured.
**
**     dupedExprStructSize()     Size of only the Expr structure 
**     dupedExprNodeSize()       Size of Expr + space for token
................................................................................
/*
** The gatherSelectWindows() procedure and its helper routine
** gatherSelectWindowsCallback() are used to scan all the expressions
** an a newly duplicated SELECT statement and gather all of the Window
** objects found there, assembling them onto the linked list at Select->pWin.
*/
static int gatherSelectWindowsCallback(Walker *pWalker, Expr *pExpr){
  if( pExpr->op==TK_FUNCTION && pExpr->y.pWin!=0 ){
    assert( ExprHasProperty(pExpr, EP_WinFunc) );
    pExpr->y.pWin->pNextWin = pWalker->u.pSelect->pWin;
    pWalker->u.pSelect->pWin = pExpr->y.pWin;




  }
  return WRC_Continue;
}
static int gatherSelectWindowsSelectCallback(Walker *pWalker, Select *p){
  return p==pWalker->u.pSelect ? WRC_Continue : WRC_Prune;
}
static void gatherSelectWindows(Select *p){
................................................................................
        assert( pNewExpr->iColumn==pItem[-1].pExpr->iColumn+1 );
        assert( pPriorSelectCol==pItem[-1].pExpr->pLeft );
        pNewExpr->pLeft = pPriorSelectCol;
      }
    }
    pItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
    pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan);
    pItem->sortOrder = pOldItem->sortOrder;
    pItem->done = 0;

    pItem->bSpanIsTab = pOldItem->bSpanIsTab;
    pItem->bSorterRef = pOldItem->bSorterRef;
    pItem->u = pOldItem->u;
  }
  return pNew;
}

................................................................................
    pNew->addrOpenEphm[0] = -1;
    pNew->addrOpenEphm[1] = -1;
    pNew->nSelectRow = p->nSelectRow;
    pNew->pWith = withDup(db, p->pWith);
#ifndef SQLITE_OMIT_WINDOWFUNC
    pNew->pWin = 0;
    pNew->pWinDefn = sqlite3WindowListDup(db, p->pWinDefn);
    if( p->pWin ) gatherSelectWindows(pNew);
#endif
    pNew->selId = p->selId;
    *pp = pNew;
    pp = &pNew->pPrior;
    pNext = pNew;
  }

................................................................................
    sqlite3ErrorMsg(pParse, "%d columns assigned %d values",
                    pColumns->nId, n);
    goto vector_append_error;
  }

  for(i=0; i<pColumns->nId; i++){
    Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i);




    pList = sqlite3ExprListAppend(pParse, pList, pSubExpr);
    if( pList ){
      assert( pList->nExpr==iFirst+i+1 );
      pList->a[pList->nExpr-1].zName = pColumns->a[i].zName;
      pColumns->a[i].zName = 0;
    }
  }
................................................................................
  sqlite3IdListDelete(db, pColumns);
  return pList;
}

/*
** Set the sort order for the last element on the given ExprList.
*/
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder){

  if( p==0 ) return;
  assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC>=0 && SQLITE_SO_DESC>0 );
  assert( p->nExpr>0 );


  if( iSortOrder<0 ){
    assert( p->a[p->nExpr-1].sortOrder==SQLITE_SO_ASC );
    return;






  }





  p->a[p->nExpr-1].sortOrder = (u8)iSortOrder;







}

/*
** Set the ExprList.a[].zName element of the most recently added item
** on the expression list.
**
** pList might be NULL following an OOM error.  But pName should never be
................................................................................
** This routine is used to determine if the OP_Affinity operation
** can be omitted.  When in doubt return FALSE.  A false negative
** is harmless.  A false positive, however, can result in the wrong
** answer.
*/
SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr *p, char aff){
  u8 op;

  if( aff==SQLITE_AFF_BLOB ) return 1;
  while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; }



  op = p->op;
  if( op==TK_REGISTER ) op = p->op2;
  switch( op ){
    case TK_INTEGER: {
      return aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC;
    }
    case TK_FLOAT: {
      return aff==SQLITE_AFF_REAL || aff==SQLITE_AFF_NUMERIC;
    }
    case TK_STRING: {
      return aff==SQLITE_AFF_TEXT;
    }
    case TK_BLOB: {
      return 1;
    }
    case TK_COLUMN: {
      assert( p->iTable>=0 );  /* p cannot be part of a CHECK constraint */
      return p->iColumn<0
          && (aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC);
    }
    default: {
      return 0;
    }
  }
}

................................................................................
**   CREATE INDEX i1 ON t1(b, c, a);
**
** then aiMap[] is populated with {2, 0, 1}.
*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3FindInIndex(
  Parse *pParse,             /* Parsing context */
  Expr *pX,                  /* The right-hand side (RHS) of the IN operator */
  u32 inFlags,               /* IN_INDEX_LOOP, _MEMBERSHIP, and/or _NOOP_OK */
  int *prRhsHasNull,         /* Register holding NULL status.  See notes */
  int *aiMap,                /* Mapping from Index fields to RHS fields */
  int *piTab                 /* OUT: index to use */
){
  Select *p;                            /* SELECT to the right of IN operator */
  int eType = 0;                        /* Type of RHS table. IN_INDEX_* */
................................................................................
    ** that columns affinity when building index keys. If <expr> is not
    ** a column, use numeric affinity.
    */
    char affinity;            /* Affinity of the LHS of the IN */
    int i;
    ExprList *pList = pExpr->x.pList;
    struct ExprList_item *pItem;
    int r1, r2, r3;
    affinity = sqlite3ExprAffinity(pLeft);
    if( !affinity ){
      affinity = SQLITE_AFF_BLOB;
    }
    if( pKeyInfo ){
      assert( sqlite3KeyInfoIsWriteable(pKeyInfo) );
      pKeyInfo->aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft);
    }

................................................................................
      if( addrOnce && !sqlite3ExprIsConstant(pE2) ){
        sqlite3VdbeChangeToNoop(v, addrOnce);
        ExprClearProperty(pExpr, EP_Subrtn);
        addrOnce = 0;
      }

      /* Evaluate the expression and insert it into the temp table */
      r3 = sqlite3ExprCodeTarget(pParse, pE2, r1);
      sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1);
      sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r2, r3, 1);
    }
    sqlite3ReleaseTempReg(pParse, r1);
    sqlite3ReleaseTempReg(pParse, r2);
  }
  if( pKeyInfo ){
    sqlite3VdbeChangeP4(v, addr, (void *)pKeyInfo, P4_KEYINFO);
  }
  if( addrOnce ){
    sqlite3VdbeJumpHere(v, addrOnce);
    /* Subroutine return */
    sqlite3VdbeAddOp1(v, OP_Return, pExpr->y.sub.regReturn);
    sqlite3VdbeChangeP1(v, pExpr->y.sub.iAddr-1, sqlite3VdbeCurrentAddr(v)-1);

  }
}
#endif /* SQLITE_OMIT_SUBQUERY */

/*
** Generate code for scalar subqueries used as a subquery expression
** or EXISTS operator:
**
**     (SELECT a FROM b)          -- subquery
**     EXISTS (SELECT a FROM b)   -- EXISTS subquery
**
** The pExpr parameter is the SELECT or EXISTS operator to be coded.
**
** The register that holds the result.  For a multi-column SELECT, 
** the result is stored in a contiguous array of registers and the
** return value is the register of the left-most result column.
** Return 0 if an error occurs.
*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *pParse, Expr *pExpr){
  int addrOnce = 0;           /* Address of OP_Once at top of subroutine */
................................................................................
    sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1);
    VdbeComment((v, "Init subquery result"));
  }else{
    dest.eDest = SRT_Exists;
    sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iSDParm);
    VdbeComment((v, "Init EXISTS result"));
  }
  pLimit = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[1], 0);
  if( pSel->pLimit ){









    sqlite3ExprDelete(pParse->db, pSel->pLimit->pLeft);
    pSel->pLimit->pLeft = pLimit;
  }else{


    pSel->pLimit = sqlite3PExpr(pParse, TK_LIMIT, pLimit, 0);
  }
  pSel->iLimit = 0;
  if( sqlite3Select(pParse, pSel, &dest) ){
    return 0;
  }
  pExpr->iTable = rReg = dest.iSDParm;
................................................................................
  ExprSetVVAProperty(pExpr, EP_NoReduce);
  if( addrOnce ){
    sqlite3VdbeJumpHere(v, addrOnce);

    /* Subroutine return */
    sqlite3VdbeAddOp1(v, OP_Return, pExpr->y.sub.regReturn);
    sqlite3VdbeChangeP1(v, pExpr->y.sub.iAddr-1, sqlite3VdbeCurrentAddr(v)-1);

  }

  return rReg;
}
#endif /* SQLITE_OMIT_SUBQUERY */

#ifndef SQLITE_OMIT_SUBQUERY
................................................................................
  if( eType==IN_INDEX_NOOP ){
    ExprList *pList = pExpr->x.pList;
    CollSeq *pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft);
    int labelOk = sqlite3VdbeMakeLabel(pParse);
    int r2, regToFree;
    int regCkNull = 0;
    int ii;

    assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
    if( destIfNull!=destIfFalse ){
      regCkNull = sqlite3GetTempReg(pParse);
      sqlite3VdbeAddOp3(v, OP_BitAnd, rLhs, rLhs, regCkNull);
    }

    for(ii=0; ii<pList->nExpr; ii++){





      r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, &regToFree);

      if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){
        sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull);
      }
      if( ii<pList->nExpr-1 || destIfNull!=destIfFalse ){
        sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2,
                          (void*)pColl, P4_COLLSEQ);
        VdbeCoverageIf(v, ii<pList->nExpr-1);
................................................................................

/*
** Convert a scalar expression node to a TK_REGISTER referencing
** register iReg.  The caller must ensure that iReg already contains
** the correct value for the expression.
*/
static void exprToRegister(Expr *pExpr, int iReg){
  Expr *p = sqlite3ExprSkipCollate(pExpr);
  p->op2 = p->op;
  p->op = TK_REGISTER;
  p->iTable = iReg;
  ExprClearProperty(p, EP_Skip);
}

/*
................................................................................
        ** constraints, and that constant is coded by the pExpr->pLeft
        ** expresssion.  However, make sure the constant has the correct
        ** datatype by applying the Affinity of the table column to the
        ** constant.
        */
        int iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target);
        int aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn);
        if( aff!=SQLITE_AFF_BLOB ){
          static const char zAff[] = "B\000C\000D\000E";
          assert( SQLITE_AFF_BLOB=='A' );
          assert( SQLITE_AFF_TEXT=='B' );
          if( iReg!=target ){
            sqlite3VdbeAddOp2(v, OP_SCopy, iReg, target);
            iReg = target;
          }
................................................................................
                            &zAff[(aff-'B')*2], P4_STATIC);
        }
        return iReg;
      }
      if( iTab<0 ){
        if( pParse->iSelfTab<0 ){
          /* Generating CHECK constraints or inserting into partial index */











          return pExpr->iColumn - pParse->iSelfTab;

        }else{
          /* Coding an expression that is part of an index where column names
          ** in the index refer to the table to which the index belongs */
          iTab = pParse->iSelfTab - 1;
        }
      }
      return sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab,
................................................................................
      */
      if( pDef->funcFlags & SQLITE_FUNC_AFFINITY ){
        const char *azAff[] = { "blob", "text", "numeric", "integer", "real" };
        char aff;
        assert( nFarg==1 );
        aff = sqlite3ExprAffinity(pFarg->a[0].pExpr);
        sqlite3VdbeLoadString(v, target, 
                              aff ? azAff[aff-SQLITE_AFF_BLOB] : "none");
        return target;
      }
#endif

      for(i=0; i<nFarg; i++){
        if( i<32 && sqlite3ExprIsConstant(pFarg->a[i].pExpr) ){
          testcase( i==31 );
................................................................................
    }
    case TK_SELECT_COLUMN: {
      int n;
      if( pExpr->pLeft->iTable==0 ){
        pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft);
      }
      assert( pExpr->iTable==0 || pExpr->pLeft->op==TK_SELECT );
      if( pExpr->iTable
       && pExpr->iTable!=(n = sqlite3ExprVectorSize(pExpr->pLeft)) 
      ){
        sqlite3ErrorMsg(pParse, "%d columns assigned %d values",
                                pExpr->iTable, n);
      }
      return pExpr->pLeft->iTable + pExpr->iColumn;
    }
    case TK_IN: {
................................................................................
    }

    case TK_VECTOR: {
      sqlite3ErrorMsg(pParse, "row value misused");
      break;
    }







    case TK_IF_NULL_ROW: {
      int addrINR;

      addrINR = sqlite3VdbeAddOp1(v, OP_IfNullRow, pExpr->iTable);





      inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target);

      sqlite3VdbeJumpHere(v, addrINR);
      sqlite3VdbeChangeP3(v, addrINR, inReg);
      break;
    }

    /*
    ** Form A:
................................................................................
      int nExpr;                        /* 2x number of WHEN terms */
      int i;                            /* Loop counter */
      ExprList *pEList;                 /* List of WHEN terms */
      struct ExprList_item *aListelem;  /* Array of WHEN terms */
      Expr opCompare;                   /* The X==Ei expression */
      Expr *pX;                         /* The X expression */
      Expr *pTest = 0;                  /* X==Ei (form A) or just Ei (form B) */



      assert( !ExprHasProperty(pExpr, EP_xIsSelect) && pExpr->x.pList );
      assert(pExpr->x.pList->nExpr > 0);
      pEList = pExpr->x.pList;
      aListelem = pEList->a;
      nExpr = pEList->nExpr;
      endLabel = sqlite3VdbeMakeLabel(pParse);
      if( (pX = pExpr->pLeft)!=0 ){
        exprNodeCopy(&tempX, pX);




        testcase( pX->op==TK_COLUMN );
        exprToRegister(&tempX, exprCodeVector(pParse, &tempX, &regFree1));
        testcase( regFree1==0 );
        memset(&opCompare, 0, sizeof(opCompare));
        opCompare.op = TK_EQ;
        opCompare.pLeft = &tempX;
        pTest = &opCompare;
        /* Ticket b351d95f9cd5ef17e9d9dbae18f5ca8611190001:
        ** The value in regFree1 might get SCopy-ed into the file result.
        ** So make sure that the regFree1 register is not reused for other
        ** purposes and possibly overwritten.  */
        regFree1 = 0;
      }
................................................................................
        sqlite3VdbeResolveLabel(v, nextCase);
      }
      if( (nExpr&1)!=0 ){
        sqlite3ExprCode(pParse, pEList->a[nExpr-1].pExpr, target);
      }else{
        sqlite3VdbeAddOp2(v, OP_Null, 0, target);
      }

      sqlite3VdbeResolveLabel(v, endLabel);
      break;
    }
#ifndef SQLITE_OMIT_TRIGGER
    case TK_RAISE: {
      assert( pExpr->affinity==OE_Rollback 
           || pExpr->affinity==OE_Abort
           || pExpr->affinity==OE_Fail
           || pExpr->affinity==OE_Ignore
      );
      if( !pParse->pTriggerTab ){
        sqlite3ErrorMsg(pParse,
                       "RAISE() may only be used within a trigger-program");
        return 0;
      }
      if( pExpr->affinity==OE_Abort ){
        sqlite3MayAbort(pParse);
      }
      assert( !ExprHasProperty(pExpr, EP_IntValue) );
      if( pExpr->affinity==OE_Ignore ){
        sqlite3VdbeAddOp4(
            v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0);
        VdbeCoverage(v);
      }else{
        sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_TRIGGER,
                              pExpr->affinity, pExpr->u.zToken, 0, 0);
      }

      break;
    }
#endif
  }
  sqlite3ReleaseTempReg(pParse, regFree1);
................................................................................
**
** If pExpr is a constant, then this routine might generate this
** code to fill the register in the initialization section of the
** VDBE program, in order to factor it out of the evaluation loop.
*/
SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
  int r2;
  pExpr = sqlite3ExprSkipCollate(pExpr);
  if( ConstFactorOk(pParse)
   && pExpr->op!=TK_REGISTER
   && sqlite3ExprIsConstantNotJoin(pExpr)
  ){
    *pReg  = 0;
    r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1);
  }else{
................................................................................
static void exprCodeBetween(
  Parse *pParse,    /* Parsing and code generating context */
  Expr *pExpr,      /* The BETWEEN expression */
  int dest,         /* Jump destination or storage location */
  void (*xJump)(Parse*,Expr*,int,int), /* Action to take */
  int jumpIfNull    /* Take the jump if the BETWEEN is NULL */
){
 Expr exprAnd;     /* The AND operator in  x>=y AND x<=z  */
  Expr compLeft;    /* The  x>=y  term */
  Expr compRight;   /* The  x<=z  term */
  Expr exprX;       /* The  x  subexpression */
  int regFree1 = 0; /* Temporary use register */



  memset(&compLeft, 0, sizeof(Expr));
  memset(&compRight, 0, sizeof(Expr));
  memset(&exprAnd, 0, sizeof(Expr));

  assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
  exprNodeCopy(&exprX, pExpr->pLeft);


  exprAnd.op = TK_AND;
  exprAnd.pLeft = &compLeft;
  exprAnd.pRight = &compRight;
  compLeft.op = TK_GE;
  compLeft.pLeft = &exprX;
  compLeft.pRight = pExpr->x.pList->a[0].pExpr;
  compRight.op = TK_LE;
  compRight.pLeft = &exprX;
  compRight.pRight = pExpr->x.pList->a[1].pExpr;
  exprToRegister(&exprX, exprCodeVector(pParse, &exprX, &regFree1));
  if( xJump ){
    xJump(pParse, &exprAnd, dest, jumpIfNull);
  }else{
    /* Mark the expression is being from the ON or USING clause of a join
    ** so that the sqlite3ExprCodeTarget() routine will not attempt to move
    ** it into the Parse.pConstExpr list.  We should use a new bit for this,
    ** for clarity, but we are out of bits in the Expr.flags field so we
    ** have to reuse the EP_FromJoin bit.  Bummer. */
    exprX.flags |= EP_FromJoin;
    sqlite3ExprCodeTarget(pParse, &exprAnd, dest);
  }
  sqlite3ReleaseTempReg(pParse, regFree1);



  /* Ensure adequate test coverage */
  testcase( xJump==sqlite3ExprIfTrue  && jumpIfNull==0 && regFree1==0 );
  testcase( xJump==sqlite3ExprIfTrue  && jumpIfNull==0 && regFree1!=0 );
  testcase( xJump==sqlite3ExprIfTrue  && jumpIfNull!=0 && regFree1==0 );
  testcase( xJump==sqlite3ExprIfTrue  && jumpIfNull!=0 && regFree1!=0 );
  testcase( xJump==sqlite3ExprIfFalse && jumpIfNull==0 && regFree1==0 );
................................................................................
    }
    if( pB->op==TK_COLLATE && sqlite3ExprCompare(pParse, pA,pB->pLeft,iTab)<2 ){
      return 1;
    }
    return 2;
  }
  if( pA->op!=TK_COLUMN && pA->op!=TK_AGG_COLUMN && pA->u.zToken ){
    if( pA->op==TK_FUNCTION ){
      if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2;
#ifndef SQLITE_OMIT_WINDOWFUNC
      /* Justification for the assert():
      ** window functions have p->op==TK_FUNCTION but aggregate functions
      ** have p->op==TK_AGG_FUNCTION.  So any comparison between an aggregate
      ** function and a window function should have failed before reaching
      ** this point.  And, it is not possible to have a window function and
      ** a scalar function with the same name and number of arguments.  So
      ** if we reach this point, either A and B both window functions or
      ** neither are a window functions. */
      assert( ExprHasProperty(pA,EP_WinFunc)==ExprHasProperty(pB,EP_WinFunc) );
      if( ExprHasProperty(pA,EP_WinFunc) ){
        if( sqlite3WindowCompare(pParse,pA->y.pWin,pB->y.pWin)!=0 ) return 2;
      }
#endif
    }else if( pA->op==TK_NULL ){
      return 0;
    }else if( pA->op==TK_COLLATE ){
      if( sqlite3_stricmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2;
    }else if( ALWAYS(pB->u.zToken!=0) && strcmp(pA->u.zToken,pB->u.zToken)!=0 ){
................................................................................
    if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2;
    if( pA->op!=TK_STRING
     && pA->op!=TK_TRUEFALSE
     && (combinedFlags & EP_Reduced)==0
    ){
      if( pA->iColumn!=pB->iColumn ) return 2;
      if( pA->op2!=pB->op2 ) return 2;

      if( pA->iTable!=pB->iTable 
       && (pA->iTable!=iTab || NEVER(pB->iTable>=0)) ) return 2;
    }
  }
  return 0;
}

/*
................................................................................
  int i;
  if( pA==0 && pB==0 ) return 0;
  if( pA==0 || pB==0 ) return 1;
  if( pA->nExpr!=pB->nExpr ) return 1;
  for(i=0; i<pA->nExpr; i++){
    Expr *pExprA = pA->a[i].pExpr;
    Expr *pExprB = pB->a[i].pExpr;
    if( pA->a[i].sortOrder!=pB->a[i].sortOrder ) return 1;
    if( sqlite3ExprCompare(0, pExprA, pExprB, iTab) ) return 1;
  }
  return 0;
}

/*
** Like sqlite3ExprCompare() except COLLATE operators at the top-level
** are ignored.
*/
SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr *pA, Expr *pB, int iTab){
  return sqlite3ExprCompare(0,
             sqlite3ExprSkipCollate(pA),
             sqlite3ExprSkipCollate(pB),
             iTab);
}

/*
** Return non-zero if Expr p can only be true if pNN is not NULL.



*/
static int exprImpliesNotNull(
  Parse *pParse,      /* Parsing context */
  Expr *p,            /* The expression to be checked */
  Expr *pNN,          /* The expression that is NOT NULL */
  int iTab,           /* Table being evaluated */
  int seenNot         /* True if p is an operand of NOT */
){
  assert( p );
  assert( pNN );
  if( sqlite3ExprCompare(pParse, p, pNN, iTab)==0 ) return 1;


  switch( p->op ){
    case TK_IN: {
      if( seenNot && ExprHasProperty(p, EP_xIsSelect) ) return 0;
      assert( ExprHasProperty(p,EP_xIsSelect)
           || (p->x.pList!=0 && p->x.pList->nExpr>0) );
      return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, seenNot);
    }
    case TK_BETWEEN: {
      ExprList *pList = p->x.pList;
      assert( pList!=0 );
      assert( pList->nExpr==2 );
      if( seenNot ) return 0;
      if( exprImpliesNotNull(pParse, pList->a[0].pExpr, pNN, iTab, seenNot)
       || exprImpliesNotNull(pParse, pList->a[1].pExpr, pNN, iTab, seenNot)
      ){
        return 1;
      }
      return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, seenNot);
    }
    case TK_EQ:
    case TK_NE:
    case TK_LT:
    case TK_LE:
    case TK_GT:
    case TK_GE:
    case TK_PLUS:
    case TK_MINUS:






    case TK_STAR:
    case TK_REM:
    case TK_BITAND:
    case TK_BITOR:
    case TK_SLASH:
    case TK_LSHIFT:
    case TK_RSHIFT: 
    case TK_CONCAT: {
      if( exprImpliesNotNull(pParse, p->pRight, pNN, iTab, seenNot) ) return 1;
      /* Fall thru into the next case */
    }
    case TK_SPAN:
    case TK_COLLATE:
    case TK_BITNOT:
    case TK_UPLUS:
    case TK_UMINUS: {
      return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, seenNot);
    }
    case TK_TRUTH: {
      if( seenNot ) return 0;
      if( p->op2!=TK_IS ) return 0;
      return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, seenNot);
    }

    case TK_NOT: {
      return exprImpliesNotNull(pParse, p->pLeft, pNN, iTab, 1);
    }
  }
  return 0;
}

................................................................................
*/
static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
  testcase( pExpr->op==TK_AGG_COLUMN );
  testcase( pExpr->op==TK_AGG_FUNCTION );
  if( ExprHasProperty(pExpr, EP_FromJoin) ) return WRC_Prune;
  switch( pExpr->op ){
    case TK_ISNOT:
    case TK_NOT:
    case TK_ISNULL:
    case TK_NOTNULL:
    case TK_IS:
    case TK_OR:
    case TK_CASE:
    case TK_IN:
    case TK_FUNCTION:
      testcase( pExpr->op==TK_ISNOT );
      testcase( pExpr->op==TK_NOT );
      testcase( pExpr->op==TK_ISNULL );
      testcase( pExpr->op==TK_NOTNULL );
      testcase( pExpr->op==TK_IS );
      testcase( pExpr->op==TK_OR );
      testcase( pExpr->op==TK_CASE );
      testcase( pExpr->op==TK_IN );
      testcase( pExpr->op==TK_FUNCTION );
................................................................................
    case TK_COLUMN:
      if( pWalker->u.iCur==pExpr->iTable ){
        pWalker->eCode = 1;
        return WRC_Abort;
      }
      return WRC_Prune;













    /* Virtual tables are allowed to use constraints like x=NULL.  So
    ** a term of the form x=y does not prove that y is not null if x
    ** is the column of a virtual table */
    case TK_EQ:
    case TK_NE:
    case TK_LT:
    case TK_LE:
................................................................................
      testcase( pExpr->op==TK_GT );
      testcase( pExpr->op==TK_GE );
      if( (pExpr->pLeft->op==TK_COLUMN && IsVirtual(pExpr->pLeft->y.pTab))
       || (pExpr->pRight->op==TK_COLUMN && IsVirtual(pExpr->pRight->y.pTab))
      ){
       return WRC_Prune;
      }

    default:
      return WRC_Continue;
  }
}

/*
** Return true (non-zero) if expression p can only be true if at least
................................................................................
** an ordinary JOIN.  The p argument is the WHERE clause.  If the WHERE
** clause requires that some column of the right table of the LEFT JOIN
** be non-NULL, then the LEFT JOIN can be safely converted into an
** ordinary join.
*/
SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr *p, int iTab){
  Walker w;
  p = sqlite3ExprSkipCollate(p);
  while( p ){
    if( p->op==TK_NOTNULL ){
      p = p->pLeft;
    }else if( p->op==TK_AND ){
      if( sqlite3ExprImpliesNonNullRow(p->pLeft, iTab) ) return 1;
      p = p->pRight;
    }else{
................................................................................
    SrcList *pSrc = p->pSrc;
    int nSrc = pSrc ? pSrc->nSrc : 0;
    for(i=0; i<nSrc; i++){
      if( pExpr->iTable==pSrc->a[i].iCursor ) break;
    }
    if( i<nSrc ){
      p->nThis++;
    }else{



      p->nOther++;
    }
  }
  return WRC_Continue;
}

/*
................................................................................
** has no arguments or has only constant arguments.  Return false if pExpr
** references columns but not columns of tables found in pSrcList.
*/
SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr *pExpr, SrcList *pSrcList){
  Walker w;
  struct SrcCount cnt;
  assert( pExpr->op==TK_AGG_FUNCTION );

  w.xExprCallback = exprSrcCount;
  w.xSelectCallback = 0;
  w.u.pSrcCount = &cnt;
  cnt.pSrc = pSrcList;
  cnt.nThis = 0;
  cnt.nOther = 0;
  sqlite3WalkExprList(&w, pExpr->x.pList);
  return cnt.nThis>0 || cnt.nOther==0;
}
................................................................................
    pParse->nRangeReg = nReg;
    pParse->iRangeReg = iReg;
  }
}

/*
** Mark all temporary registers as being unavailable for reuse.





*/
SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){
  pParse->nTempReg = 0;
  pParse->nRangeReg = 0;
}

/*
................................................................................

  /* Make sure it is not a system table being altered, or a reserved name
  ** that the table is being renamed to.
  */
  if( SQLITE_OK!=isAlterableTable(pParse, pTab) ){
    goto exit_rename_table;
  }
  if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto
    exit_rename_table;
  }

#ifndef SQLITE_OMIT_VIEW
  if( pTab->pSelect ){
    sqlite3ErrorMsg(pParse, "view %s may not be altered", pTab->zName);
    goto exit_rename_table;
  }
................................................................................
**    CREATE TABLE sqlite_stat4(tbl, idx, nEq, nLt, nDLt, sample);
**
** Additional tables might be added in future releases of SQLite.
** The sqlite_stat2 table is not created or used unless the SQLite version
** is between 3.6.18 and 3.7.8, inclusive, and unless SQLite is compiled
** with SQLITE_ENABLE_STAT2.  The sqlite_stat2 table is deprecated.
** The sqlite_stat2 table is superseded by sqlite_stat3, which is only
** created and used by SQLite versions 3.7.9 and later and with
** SQLITE_ENABLE_STAT3 defined.  The functionality of sqlite_stat3
** is a superset of sqlite_stat2.  The sqlite_stat4 is an enhanced
** version of sqlite_stat3 and is only available when compiled with
** SQLITE_ENABLE_STAT4 and in SQLite versions 3.8.1 and later.  It is
** not possible to enable both STAT3 and STAT4 at the same time.  If they
** are both enabled, then STAT4 takes precedence.
**
** For most applications, sqlite_stat1 provides all the statistics required
** for the query planner to make good choices.
**
** Format of sqlite_stat1:
**
** There is normally one row per index, with the index identified by the
................................................................................
** integer in the equivalent columns in sqlite_stat4.
*/
#ifndef SQLITE_OMIT_ANALYZE
/* #include "sqliteInt.h" */

#if defined(SQLITE_ENABLE_STAT4)
# define IsStat4     1
# define IsStat3     0
#elif defined(SQLITE_ENABLE_STAT3)
# define IsStat4     0
# define IsStat3     1
#else
# define IsStat4     0
# define IsStat3     0
# undef SQLITE_STAT4_SAMPLES
# define SQLITE_STAT4_SAMPLES 1
#endif
#define IsStat34    (IsStat3+IsStat4)  /* 1 for STAT3 or STAT4. 0 otherwise */

/*
** This routine generates code that opens the sqlite_statN tables.
** The sqlite_stat1 table is always relevant.  sqlite_stat2 is now
** obsolete.  sqlite_stat3 and sqlite_stat4 are only opened when
** appropriate compile-time options are provided.
**
................................................................................
  static const struct {
    const char *zName;
    const char *zCols;
  } aTable[] = {
    { "sqlite_stat1", "tbl,idx,stat" },
#if defined(SQLITE_ENABLE_STAT4)
    { "sqlite_stat4", "tbl,idx,neq,nlt,ndlt,sample" },
    { "sqlite_stat3", 0 },
#elif defined(SQLITE_ENABLE_STAT3)
    { "sqlite_stat3", "tbl,idx,neq,nlt,ndlt,sample" },
    { "sqlite_stat4", 0 },
#else
    { "sqlite_stat3", 0 },
    { "sqlite_stat4", 0 },
#endif

  };
  int i;
  sqlite3 *db = pParse->db;
  Db *pDb;
  Vdbe *v = sqlite3GetVdbe(pParse);
  int aRoot[ArraySize(aTable)];
  u8 aCreateTbl[ArraySize(aTable)];
................................................................................
** information.
*/
typedef struct Stat4Accum Stat4Accum;
typedef struct Stat4Sample Stat4Sample;
struct Stat4Sample {
  tRowcnt *anEq;                  /* sqlite_stat4.nEq */
  tRowcnt *anDLt;                 /* sqlite_stat4.nDLt */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  tRowcnt *anLt;                  /* sqlite_stat4.nLt */
  union {
    i64 iRowid;                     /* Rowid in main table of the key */
    u8 *aRowid;                     /* Key for WITHOUT ROWID tables */
  } u;
  u32 nRowid;                     /* Sizeof aRowid[] */
  u8 isPSample;                   /* True if a periodic sample */
................................................................................
  int iGet;                 /* Index of current sample accessed by stat_get() */
  Stat4Sample *a;           /* Array of mxSample Stat4Sample objects */
  sqlite3 *db;              /* Database connection, for malloc() */
};

/* Reclaim memory used by a Stat4Sample
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static void sampleClear(sqlite3 *db, Stat4Sample *p){
  assert( db!=0 );
  if( p->nRowid ){
    sqlite3DbFree(db, p->u.aRowid);
    p->nRowid = 0;
  }
}
#endif

/* Initialize the BLOB value of a ROWID
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){
  assert( db!=0 );
  if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
  p->u.aRowid = sqlite3DbMallocRawNN(db, n);
  if( p->u.aRowid ){
    p->nRowid = n;
    memcpy(p->u.aRowid, pData, n);
................................................................................
    p->nRowid = 0;
  }
}
#endif

/* Initialize the INTEGER value of a ROWID.
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){
  assert( db!=0 );
  if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
  p->nRowid = 0;
  p->u.iRowid = iRowid;
}
#endif


/*
** Copy the contents of object (*pFrom) into (*pTo).
*/
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){
  pTo->isPSample = pFrom->isPSample;
  pTo->iCol = pFrom->iCol;
  pTo->iHash = pFrom->iHash;
  memcpy(pTo->anEq, pFrom->anEq, sizeof(tRowcnt)*p->nCol);
  memcpy(pTo->anLt, pFrom->anLt, sizeof(tRowcnt)*p->nCol);
  memcpy(pTo->anDLt, pFrom->anDLt, sizeof(tRowcnt)*p->nCol);
................................................................................
#endif

/*
** Reclaim all memory of a Stat4Accum structure.
*/
static void stat4Destructor(void *pOld){
  Stat4Accum *p = (Stat4Accum*)pOld;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int i;
  for(i=0; i<p->nCol; i++) sampleClear(p->db, p->aBest+i);
  for(i=0; i<p->mxSample; i++) sampleClear(p->db, p->a+i);
  sampleClear(p->db, &p->current);
#endif
  sqlite3DbFree(p->db, p);
}
................................................................................
**     K:    The number of columns in the index excluding the rowid/pk.
**     C:    The number of rows in the index (note 2)
**
** Note 1:  In the special case of the covering index that implements a
** WITHOUT ROWID table, N is the number of PRIMARY KEY columns, not the
** total number of columns in the table.
**
** Note 2:  C is only used for STAT3 and STAT4.
**
** For indexes on ordinary rowid tables, N==K+1.  But for indexes on
** WITHOUT ROWID tables, N=K+P where P is the number of columns in the
** PRIMARY KEY of the table.  The covering index that implements the
** original WITHOUT ROWID table as N==K as a special case.
**
** This routine allocates the Stat4Accum object in heap memory. The return 
................................................................................
){
  Stat4Accum *p;
  int nCol;                       /* Number of columns in index being sampled */
  int nKeyCol;                    /* Number of key columns */
  int nColUp;                     /* nCol rounded up for alignment */
  int n;                          /* Bytes of space to allocate */
  sqlite3 *db;                    /* Database connection */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int mxSample = SQLITE_STAT4_SAMPLES;
#endif

  /* Decode the three function arguments */
  UNUSED_PARAMETER(argc);
  nCol = sqlite3_value_int(argv[0]);
  assert( nCol>0 );
................................................................................
  assert( nKeyCol<=nCol );
  assert( nKeyCol>0 );

  /* Allocate the space required for the Stat4Accum object */
  n = sizeof(*p) 
    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anEq */
    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anDLt */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anLt */
    + sizeof(Stat4Sample)*(nCol+mxSample)     /* Stat4Accum.aBest[], a[] */
    + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample)
#endif
  ;
  db = sqlite3_context_db_handle(context);
  p = sqlite3DbMallocZero(db, n);
................................................................................
  p->db = db;
  p->nRow = 0;
  p->nCol = nCol;
  p->nKeyCol = nKeyCol;
  p->current.anDLt = (tRowcnt*)&p[1];
  p->current.anEq = &p->current.anDLt[nColUp];

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  {
    u8 *pSpace;                     /* Allocated space not yet assigned */
    int i;                          /* Used to iterate through p->aSample[] */

    p->iGet = -1;
    p->mxSample = mxSample;
    p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[2])/(mxSample/3+1) + 1);
................................................................................
  /* Return a pointer to the allocated object to the caller.  Note that
  ** only the pointer (the 2nd parameter) matters.  The size of the object
  ** (given by the 3rd parameter) is never used and can be any positive
  ** value. */
  sqlite3_result_blob(context, p, sizeof(*p), stat4Destructor);
}
static const FuncDef statInitFuncdef = {
  2+IsStat34,      /* nArg */
  SQLITE_UTF8,     /* funcFlags */
  0,               /* pUserData */
  0,               /* pNext */
  statInit,        /* xSFunc */
  0,               /* xFinalize */
  0, 0,            /* xValue, xInverse */
  "stat_init",     /* zName */
................................................................................
    if( pNew->anEq[i]<pOld->anEq[i] ) return 0;
  }
  if( pNew->iHash>pOld->iHash ) return 1;
  return 0;
}
#endif

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Return true if pNew is to be preferred over pOld.
**
** This function assumes that for each argument sample, the contents of
** the anEq[] array from pSample->anEq[pSample->iCol] onwards are valid. 
*/
static int sampleIsBetter(
................................................................................
  tRowcnt nEqNew = pNew->anEq[pNew->iCol];
  tRowcnt nEqOld = pOld->anEq[pOld->iCol];

  assert( pOld->isPSample==0 && pNew->isPSample==0 );
  assert( IsStat4 || (pNew->iCol==0 && pOld->iCol==0) );

  if( (nEqNew>nEqOld) ) return 1;
#ifdef SQLITE_ENABLE_STAT4
  if( nEqNew==nEqOld ){
    if( pNew->iCol<pOld->iCol ) return 1;
    return (pNew->iCol==pOld->iCol && sampleIsBetterPost(pAccum, pNew, pOld));
  }
  return 0;
#else
  return (nEqNew==nEqOld && pNew->iHash>pOld->iHash);
#endif
}

/*
** Copy the contents of sample *pNew into the p->a[] array. If necessary,
** remove the least desirable sample from p->a[] to make room.
*/
static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
  Stat4Sample *pSample = 0;
  int i;

  assert( IsStat4 || nEqZero==0 );

#ifdef SQLITE_ENABLE_STAT4
  /* Stat4Accum.nMaxEqZero is set to the maximum number of leading 0
  ** values in the anEq[] array of any sample in Stat4Accum.a[]. In
  ** other words, if nMaxEqZero is n, then it is guaranteed that there
  ** are no samples with Stat4Sample.anEq[m]==0 for (m>=n). */
  if( nEqZero>p->nMaxEqZero ){
    p->nMaxEqZero = nEqZero;
  }
................................................................................
    }
    if( pUpgrade ){
      pUpgrade->iCol = pNew->iCol;
      pUpgrade->anEq[pUpgrade->iCol] = pNew->anEq[pUpgrade->iCol];
      goto find_new_min;
    }
  }
#endif

  /* If necessary, remove sample iMin to make room for the new sample. */
  if( p->nSample>=p->mxSample ){
    Stat4Sample *pMin = &p->a[p->iMin];
    tRowcnt *anEq = pMin->anEq;
    tRowcnt *anLt = pMin->anLt;
    tRowcnt *anDLt = pMin->anDLt;
................................................................................
    pSample->anLt = anLt;
    p->nSample = p->mxSample-1;
  }

  /* The "rows less-than" for the rowid column must be greater than that
  ** for the last sample in the p->a[] array. Otherwise, the samples would
  ** be out of order. */
#ifdef SQLITE_ENABLE_STAT4
  assert( p->nSample==0 
       || pNew->anLt[p->nCol-1] > p->a[p->nSample-1].anLt[p->nCol-1] );
#endif

  /* Insert the new sample */
  pSample = &p->a[p->nSample];
  sampleCopy(p, pSample, pNew);
  p->nSample++;

  /* Zero the first nEqZero entries in the anEq[] array. */
  memset(pSample->anEq, 0, sizeof(tRowcnt)*nEqZero);

#ifdef SQLITE_ENABLE_STAT4
 find_new_min:
#endif
  if( p->nSample>=p->mxSample ){
    int iMin = -1;
    for(i=0; i<p->mxSample; i++){
      if( p->a[i].isPSample ) continue;
      if( iMin<0 || sampleIsBetter(p, &p->a[iMin], &p->a[i]) ){
        iMin = i;
      }
    }
    assert( iMin>=0 );
    p->iMin = iMin;
  }
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** Field iChng of the index being scanned has changed. So at this point
** p->current contains a sample that reflects the previous row of the
** index. The value of anEq[iChng] and subsequent anEq[] elements are
** correct at this point.
*/
................................................................................
        if( p->a[i].anEq[j]==0 ) p->a[i].anEq[j] = p->current.anEq[j];
      }
    }
    p->nMaxEqZero = iChng;
  }
#endif

#if defined(SQLITE_ENABLE_STAT3) && !defined(SQLITE_ENABLE_STAT4)
  if( iChng==0 ){
    tRowcnt nLt = p->current.anLt[0];
    tRowcnt nEq = p->current.anEq[0];

    /* Check if this is to be a periodic sample. If so, add it. */
    if( (nLt/p->nPSample)!=(nLt+nEq)/p->nPSample ){
      p->current.isPSample = 1;
      sampleInsert(p, &p->current, 0);
      p->current.isPSample = 0;
    }else 

    /* Or if it is a non-periodic sample. Add it in this case too. */
    if( p->nSample<p->mxSample 
     || sampleIsBetter(p, &p->current, &p->a[p->iMin]) 
    ){
      sampleInsert(p, &p->current, 0);
    }
  }
#endif

#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
  UNUSED_PARAMETER( p );
  UNUSED_PARAMETER( iChng );
#endif
}

/*
** Implementation of the stat_push SQL function:  stat_push(P,C,R)
................................................................................
**          WITHOUT ROWID tables.
**
** This SQL function always returns NULL.  It's purpose it to accumulate
** statistical data and/or samples in the Stat4Accum object about the
** index being analyzed.  The stat_get() SQL function will later be used to
** extract relevant information for constructing the sqlite_statN tables.
**
** The R parameter is only used for STAT3 and STAT4
*/
static void statPush(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int i;
................................................................................
    /* Update anDLt[], anLt[] and anEq[] to reflect the values that apply
    ** to the current row of the index. */
    for(i=0; i<iChng; i++){
      p->current.anEq[i]++;
    }
    for(i=iChng; i<p->nCol; i++){
      p->current.anDLt[i]++;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
      p->current.anLt[i] += p->current.anEq[i];
#endif
      p->current.anEq[i] = 1;
    }
  }
  p->nRow++;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( sqlite3_value_type(argv[2])==SQLITE_INTEGER ){
    sampleSetRowidInt64(p->db, &p->current, sqlite3_value_int64(argv[2]));
  }else{
    sampleSetRowid(p->db, &p->current, sqlite3_value_bytes(argv[2]),
                                       sqlite3_value_blob(argv[2]));
  }
  p->current.iHash = p->iPrn = p->iPrn*1103515245 + 12345;
................................................................................
        sampleCopy(p, &p->aBest[i], &p->current);
      }
    }
  }
#endif
}
static const FuncDef statPushFuncdef = {
  2+IsStat34,      /* nArg */
  SQLITE_UTF8,     /* funcFlags */
  0,               /* pUserData */
  0,               /* pNext */
  statPush,        /* xSFunc */
  0,               /* xFinalize */
  0, 0,            /* xValue, xInverse */
  "stat_push",     /* zName */
................................................................................
**
** The stat_get(P,J) function is not available to generic SQL.  It is
** inserted as part of a manually constructed bytecode program.  (See
** the callStatGet() routine below.)  It is guaranteed that the P
** parameter will always be a poiner to a Stat4Accum object, never a
** NULL.
**
** If neither STAT3 nor STAT4 are enabled, then J is always
** STAT_GET_STAT1 and is hence omitted and this routine becomes
** a one-parameter function, stat_get(P), that always returns the
** stat1 table entry information.
*/
static void statGet(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]);
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  /* STAT3 and STAT4 have a parameter on this routine. */
  int eCall = sqlite3_value_int(argv[1]);
  assert( argc==2 );
  assert( eCall==STAT_GET_STAT1 || eCall==STAT_GET_NEQ 
       || eCall==STAT_GET_ROWID || eCall==STAT_GET_NLT
       || eCall==STAT_GET_NDLT 
  );
  if( eCall==STAT_GET_STAT1 )
................................................................................
      z += sqlite3Strlen30(z);
      assert( p->current.anEq[i] );
    }
    assert( z[0]=='\0' && z>zRet );

    sqlite3_result_text(context, zRet, -1, sqlite3_free);
  }
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  else if( eCall==STAT_GET_ROWID ){
    if( p->iGet<0 ){
      samplePushPrevious(p, 0);
      p->iGet = 0;
    }
    if( p->iGet<p->nSample ){
      Stat4Sample *pS = p->a + p->iGet;
................................................................................
      default: {
        aCnt = p->a[p->iGet].anDLt; 
        p->iGet++;
        break;
      }
    }

    if( IsStat3 ){
      sqlite3_result_int64(context, (i64)aCnt[0]);
    }else{
      char *zRet = sqlite3MallocZero(p->nCol * 25);
      if( zRet==0 ){
        sqlite3_result_error_nomem(context);
      }else{
        int i;
        char *z = zRet;
        for(i=0; i<p->nCol; i++){
................................................................................
        }
        assert( z[0]=='\0' && z>zRet );
        z[-1] = '\0';
        sqlite3_result_text(context, zRet, -1, sqlite3_free);
      }
    }
  }
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */
#ifndef SQLITE_DEBUG
  UNUSED_PARAMETER( argc );
#endif
}
static const FuncDef statGetFuncdef = {
  1+IsStat34,      /* nArg */
  SQLITE_UTF8,     /* funcFlags */
  0,               /* pUserData */
  0,               /* pNext */
  statGet,         /* xSFunc */
  0,               /* xFinalize */
  0, 0,            /* xValue, xInverse */
  "stat_get",      /* zName */
  {0}
};

static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){
  assert( regOut!=regStat4 && regOut!=regStat4+1 );
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  sqlite3VdbeAddOp2(v, OP_Integer, iParam, regStat4+1);
#elif SQLITE_DEBUG
  assert( iParam==STAT_GET_STAT1 );
#else
  UNUSED_PARAMETER( iParam );
#endif
  sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4, regOut,
                    (char*)&statGetFuncdef, P4_FUNCDEF);
  sqlite3VdbeChangeP5(v, 1 + IsStat34);
}

/*
** Generate code to do an analysis of all indices associated with
** a single table.
*/
static void analyzeOneTable(
................................................................................
  int i;                       /* Loop counter */
  int jZeroRows = -1;          /* Jump from here if number of rows is zero */
  int iDb;                     /* Index of database containing pTab */
  u8 needTableCnt = 1;         /* True to count the table */
  int regNewRowid = iMem++;    /* Rowid for the inserted record */
  int regStat4 = iMem++;       /* Register to hold Stat4Accum object */
  int regChng = iMem++;        /* Index of changed index field */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  int regRowid = iMem++;       /* Rowid argument passed to stat_push() */
#endif
  int regTemp = iMem++;        /* Temporary use register */
  int regTabname = iMem++;     /* Register containing table name */
  int regIdxname = iMem++;     /* Register containing index name */
  int regStat1 = iMem++;       /* Value for the stat column of sqlite_stat1 */
  int regPrev = iMem;          /* MUST BE LAST (see below) */
................................................................................
    ** 
    **    (1) the number of columns in the index including the rowid
    **        (or for a WITHOUT ROWID table, the number of PK columns),
    **    (2) the number of columns in the key without the rowid/pk
    **    (3) the number of rows in the index,
    **
    **
    ** The third argument is only used for STAT3 and STAT4
    */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat4+3);
#endif
    sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat4+1);
    sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regStat4+2);
    sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4+1, regStat4,
                     (char*)&statInitFuncdef, P4_FUNCDEF);
    sqlite3VdbeChangeP5(v, 2+IsStat34);

    /* Implementation of the following:
    **
    **   Rewind csr
    **   if eof(csr) goto end_of_scan;
    **   regChng = 0
    **   goto next_push_0;
................................................................................
      }
      sqlite3VdbeResolveLabel(v, endDistinctTest);
      sqlite3DbFree(db, aGotoChng);
    }
  
    /*
    **  chng_addr_N:
    **   regRowid = idx(rowid)            // STAT34 only
    **   stat_push(P, regChng, regRowid)  // 3rd parameter STAT34 only
    **   Next csr
    **   if !eof(csr) goto next_row;
    */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    assert( regRowid==(regStat4+2) );
    if( HasRowid(pTab) ){
      sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, regRowid);
    }else{
      Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable);
      int j, k, regKey;
      regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol);
................................................................................
      sqlite3VdbeAddOp3(v, OP_MakeRecord, regKey, pPk->nKeyCol, regRowid);
      sqlite3ReleaseTempRange(pParse, regKey, pPk->nKeyCol);
    }
#endif
    assert( regChng==(regStat4+1) );
    sqlite3VdbeAddOp4(v, OP_Function0, 1, regStat4, regTemp,
                     (char*)&statPushFuncdef, P4_FUNCDEF);
    sqlite3VdbeChangeP5(v, 2+IsStat34);
    sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v);

    /* Add the entry to the stat1 table. */
    callStatGet(v, regStat4, STAT_GET_STAT1, regStat1);
    assert( "BBB"[0]==SQLITE_AFF_TEXT );
    sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0);
    sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
    sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regTemp, regNewRowid);
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
    sqlite3VdbeChangeP4(v, -1, (char*)pStat1, P4_TABLE);
#endif
    sqlite3VdbeChangeP5(v, OPFLAG_APPEND);

    /* Add the entries to the stat3 or stat4 table. */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    {
      int regEq = regStat1;
      int regLt = regStat1+1;
      int regDLt = regStat1+2;
      int regSample = regStat1+3;
      int regCol = regStat1+4;
      int regSampleRowid = regCol + nCol;
................................................................................
      addrIsNull = sqlite3VdbeAddOp1(v, OP_IsNull, regSampleRowid);
      VdbeCoverage(v);
      callStatGet(v, regStat4, STAT_GET_NEQ, regEq);
      callStatGet(v, regStat4, STAT_GET_NLT, regLt);
      callStatGet(v, regStat4, STAT_GET_NDLT, regDLt);
      sqlite3VdbeAddOp4Int(v, seekOp, iTabCur, addrNext, regSampleRowid, 0);
      VdbeCoverage(v);
#ifdef SQLITE_ENABLE_STAT3
      sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, 0, regSample);
#else
      for(i=0; i<nCol; i++){
        sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, i, regCol+i);
      }
      sqlite3VdbeAddOp3(v, OP_MakeRecord, regCol, nCol, regSample);
#endif
      sqlite3VdbeAddOp3(v, OP_MakeRecord, regTabname, 6, regTemp);
      sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regNewRowid);
      sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regTemp, regNewRowid);
      sqlite3VdbeAddOp2(v, OP_Goto, 1, addrNext); /* P1==1 for end-of-loop */
      sqlite3VdbeJumpHere(v, addrIsNull);
    }
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

    /* End of analysis */
    sqlite3VdbeJumpHere(v, addrRewind);
  }


  /* Create a single sqlite_stat1 entry containing NULL as the index
................................................................................
  Index *pIndex          /* Handle extra flags for this index, if not NULL */
){
  char *z = zIntArray;
  int c;
  int i;
  tRowcnt v;

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( z==0 ) z = "";
#else
  assert( z!=0 );
#endif
  for(i=0; *z && i<nOut; i++){
    v = 0;
    while( (c=z[0])>='0' && c<='9' ){
      v = v*10 + c - '0';
      z++;
    }
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    if( aOut ) aOut[i] = v;
    if( aLog ) aLog[i] = sqlite3LogEst(v);
#else
    assert( aOut==0 );
    UNUSED_PARAMETER(aOut);
    assert( aLog!=0 );
    aLog[i] = sqlite3LogEst(v);
#endif
    if( *z==' ' ) z++;
  }
#ifndef SQLITE_ENABLE_STAT3_OR_STAT4
  assert( pIndex!=0 ); {
#else
  if( pIndex ){
#endif
    pIndex->bUnordered = 0;
    pIndex->noSkipScan = 0;
    while( z[0] ){
      if( sqlite3_strglob("unordered*", z)==0 ){
        pIndex->bUnordered = 1;
      }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){


        pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3));
      }else if( sqlite3_strglob("noskipscan*", z)==0 ){
        pIndex->noSkipScan = 1;
      }
#ifdef SQLITE_ENABLE_COSTMULT
      else if( sqlite3_strglob("costmult=[0-9]*",z)==0 ){
        pIndex->pTable->costMult = sqlite3LogEst(sqlite3Atoi(z+9));
      }
................................................................................
    pIndex = sqlite3FindIndex(pInfo->db, argv[1], pInfo->zDatabase);
  }
  z = argv[2];

  if( pIndex ){
    tRowcnt *aiRowEst = 0;
    int nCol = pIndex->nKeyCol+1;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    /* Index.aiRowEst may already be set here if there are duplicate 
    ** sqlite_stat1 entries for this index. In that case just clobber
    ** the old data with the new instead of allocating a new array.  */
    if( pIndex->aiRowEst==0 ){
      pIndex->aiRowEst = (tRowcnt*)sqlite3MallocZero(sizeof(tRowcnt) * nCol);
      if( pIndex->aiRowEst==0 ) sqlite3OomFault(pInfo->db);
    }
................................................................................
}

/*
** If the Index.aSample variable is not NULL, delete the aSample[] array
** and its contents.
*/
SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pIdx->aSample ){
    int j;
    for(j=0; j<pIdx->nSample; j++){
      IndexSample *p = &pIdx->aSample[j];
      sqlite3DbFree(db, p->p);
    }
    sqlite3DbFree(db, pIdx->aSample);
................................................................................
  if( db && db->pnBytesFreed==0 ){
    pIdx->nSample = 0;
    pIdx->aSample = 0;
  }
#else
  UNUSED_PARAMETER(db);
  UNUSED_PARAMETER(pIdx);
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */
}

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Populate the pIdx->aAvgEq[] array based on the samples currently
** stored in pIdx->aSample[]. 
*/
static void initAvgEq(Index *pIdx){
  if( pIdx ){
    IndexSample *aSample = pIdx->aSample;
................................................................................
    Table *pTab = sqlite3FindTable(db, zName, zDb);
    if( pTab && !HasRowid(pTab) ) pIdx = sqlite3PrimaryKeyIndex(pTab);
  }
  return pIdx;
}

/*
** Load the content from either the sqlite_stat4 or sqlite_stat3 table 
** into the relevant Index.aSample[] arrays.
**
** Arguments zSql1 and zSql2 must point to SQL statements that return
** data equivalent to the following (statements are different for stat3,
** see the caller of this function for details):
**
**    zSql1: SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx
**    zSql2: SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat4
**
** where %Q is replaced with the database name before the SQL is executed.
*/
static int loadStatTbl(
  sqlite3 *db,                  /* Database handle */
  int bStat3,                   /* Assume single column records only */
  const char *zSql1,            /* SQL statement 1 (see above) */
  const char *zSql2,            /* SQL statement 2 (see above) */
  const char *zDb               /* Database name (e.g. "main") */
){
  int rc;                       /* Result codes from subroutines */
  sqlite3_stmt *pStmt = 0;      /* An SQL statement being run */
  char *zSql;                   /* Text of the SQL statement */
................................................................................
    int i;          /* Bytes of space required */
    tRowcnt *pSpace;

    zIndex = (char *)sqlite3_column_text(pStmt, 0);
    if( zIndex==0 ) continue;
    nSample = sqlite3_column_int(pStmt, 1);
    pIdx = findIndexOrPrimaryKey(db, zIndex, zDb);
    assert( pIdx==0 || bStat3 || pIdx->nSample==0 );
    /* Index.nSample is non-zero at this point if data has already been
    ** loaded from the stat4 table. In this case ignore stat3 data.  */
    if( pIdx==0 || pIdx->nSample ) continue;
    if( bStat3==0 ){
      assert( !HasRowid(pIdx->pTable) || pIdx->nColumn==pIdx->nKeyCol+1 );
      if( !HasRowid(pIdx->pTable) && IsPrimaryKeyIndex(pIdx) ){
        nIdxCol = pIdx->nKeyCol;
      }else{
        nIdxCol = pIdx->nColumn;
      }
    }
    pIdx->nSampleCol = nIdxCol;
    nByte = sizeof(IndexSample) * nSample;
    nByte += sizeof(tRowcnt) * nIdxCol * 3 * nSample;
    nByte += nIdxCol * sizeof(tRowcnt);     /* Space for Index.aAvgEq[] */

    pIdx->aSample = sqlite3DbMallocZero(db, nByte);
................................................................................
    int nCol = 1;                 /* Number of columns in index */

    zIndex = (char *)sqlite3_column_text(pStmt, 0);
    if( zIndex==0 ) continue;
    pIdx = findIndexOrPrimaryKey(db, zIndex, zDb);
    if( pIdx==0 ) continue;
    /* This next condition is true if data has already been loaded from 
    ** the sqlite_stat4 table. In this case ignore stat3 data.  */
    nCol = pIdx->nSampleCol;
    if( bStat3 && nCol>1 ) continue;
    if( pIdx!=pPrevIdx ){
      initAvgEq(pPrevIdx);
      pPrevIdx = pIdx;
    }
    pSample = &pIdx->aSample[pIdx->nSample];
    decodeIntArray((char*)sqlite3_column_text(pStmt,1),nCol,pSample->anEq,0,0);
    decodeIntArray((char*)sqlite3_column_text(pStmt,2),nCol,pSample->anLt,0,0);
................................................................................
  }
  rc = sqlite3_finalize(pStmt);
  if( rc==SQLITE_OK ) initAvgEq(pPrevIdx);
  return rc;
}

/*
** Load content from the sqlite_stat4 and sqlite_stat3 tables into 
** the Index.aSample[] arrays of all indices.
*/
static int loadStat4(sqlite3 *db, const char *zDb){
  int rc = SQLITE_OK;             /* Result codes from subroutines */

  assert( db->lookaside.bDisable );
  if( sqlite3FindTable(db, "sqlite_stat4", zDb) ){
    rc = loadStatTbl(db, 0,
      "SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx", 
      "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat4",
      zDb
    );
  }

  if( rc==SQLITE_OK && sqlite3FindTable(db, "sqlite_stat3", zDb) ){
    rc = loadStatTbl(db, 1,
      "SELECT idx,count(*) FROM %Q.sqlite_stat3 GROUP BY idx", 
      "SELECT idx,neq,nlt,ndlt,sqlite_record(sample) FROM %Q.sqlite_stat3",
      zDb
    );
  }

  return rc;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** Load the content of the sqlite_stat1 and sqlite_stat3/4 tables. The
** contents of sqlite_stat1 are used to populate the Index.aiRowEst[]
** arrays. The contents of sqlite_stat3/4 are used to populate the
** Index.aSample[] arrays.
**
** If the sqlite_stat1 table is not present in the database, SQLITE_ERROR
** is returned. In this case, even if SQLITE_ENABLE_STAT3/4 was defined 
** during compilation and the sqlite_stat3/4 table is present, no data is 
** read from it.
**
** If SQLITE_ENABLE_STAT3/4 was defined during compilation and the 
** sqlite_stat4 table is not present in the database, SQLITE_ERROR is
** returned. However, in this case, data is read from the sqlite_stat1
** table (if it is present) before returning.
**
** If an OOM error occurs, this function always sets db->mallocFailed.
** This means if the caller does not care about other errors, the return
** code may be ignored.
................................................................................
  for(i=sqliteHashFirst(&pSchema->tblHash); i; i=sqliteHashNext(i)){
    Table *pTab = sqliteHashData(i);
    pTab->tabFlags &= ~TF_HasStat1;
  }
  for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){
    Index *pIdx = sqliteHashData(i);
    pIdx->hasStat1 = 0;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    sqlite3DeleteIndexSamples(db, pIdx);
    pIdx->aSample = 0;
#endif
  }

  /* Load new statistics out of the sqlite_stat1 table */
  sInfo.db = db;
................................................................................
  assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
  for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){
    Index *pIdx = sqliteHashData(i);
    if( !pIdx->hasStat1 ) sqlite3DefaultRowEst(pIdx);
  }

  /* Load the statistics from the sqlite_stat4 table. */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( rc==SQLITE_OK ){
    db->lookaside.bDisable++;
    rc = loadStat4(db, sInfo.zDatabase);
    db->lookaside.bDisable--;
  }
  for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){
    Index *pIdx = sqliteHashData(i);
................................................................................
  int NotUsed,
  sqlite3_value **argv
){
  const char *zName = (const char *)sqlite3_value_text(argv[0]);
  sqlite3 *db = sqlite3_context_db_handle(context);
  int i;
  Db *pDb = 0;

  char zErr[128];

  UNUSED_PARAMETER(NotUsed);

  if( zName==0 ) zName = "";
  for(i=0; i<db->nDb; i++){
    pDb = &db->aDb[i];
................................................................................
    sqlite3_snprintf(sizeof(zErr),zErr, "cannot detach database %s", zName);
    goto detach_error;
  }
  if( sqlite3BtreeIsInReadTrans(pDb->pBt) || sqlite3BtreeIsInBackup(pDb->pBt) ){
    sqlite3_snprintf(sizeof(zErr),zErr, "database %s is locked", zName);
    goto detach_error;
  }













  sqlite3BtreeClose(pDb->pBt);
  pDb->pBt = 0;
  pDb->pSchema = 0;
  sqlite3CollapseDatabaseArray(db);
  return;

................................................................................
  return 0;
}
SQLITE_PRIVATE int sqlite3FixExpr(
  DbFixer *pFix,     /* Context of the fixation */
  Expr *pExpr        /* The expression to be fixed to one database */
){
  while( pExpr ){

    if( pExpr->op==TK_VARIABLE ){
      if( pFix->pParse->db->init.busy ){
        pExpr->op = TK_NULL;
      }else{
        sqlite3ErrorMsg(pFix->pParse, "%s cannot use variables", pFix->zType);
        return 1;
      }
................................................................................
){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
#endif
  sqlite3_mutex_enter(db->mutex);
  db->xAuth = (sqlite3_xauth)xAuth;
  db->pAuthArg = pArg;
  sqlite3ExpirePreparedStatements(db, 0);
  sqlite3_mutex_leave(db->mutex);
  return SQLITE_OK;
}

/*
** Write an error message into pParse->zErrMsg that explains that the
** user-supplied authorization function returned an illegal value.
................................................................................
#ifndef SQLITE_OMIT_ANALYZE
  sqlite3DeleteIndexSamples(db, p);
#endif
  sqlite3ExprDelete(db, p->pPartIdxWhere);
  sqlite3ExprListDelete(db, p->aColExpr);
  sqlite3DbFree(db, p->zColAff);
  if( p->isResized ) sqlite3DbFree(db, (void *)p->azColl);
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  sqlite3_free(p->aiRowEst);
#endif
  sqlite3DbFree(db, p);
}

/*
** For the index called zIdxName which is found in the database iDb,
................................................................................

/*
** This routine is used to check if the UTF-8 string zName is a legal
** unqualified name for a new schema object (table, index, view or
** trigger). All names are legal except those that begin with the string
** "sqlite_" (in upper, lower or mixed case). This portion of the namespace
** is reserved for internal use.




*/
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *pParse, const char *zName){





















  if( !pParse->db->init.busy && pParse->nested==0 
          && sqlite3WritableSchema(pParse->db)==0
          && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){

    sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s", zName);

    return SQLITE_ERROR;

  }
  return SQLITE_OK;
}

/*
** Return the PRIMARY KEY index of a table
*/
................................................................................
    zName = sqlite3NameFromToken(db, pName);
    if( IN_RENAME_OBJECT ){
      sqlite3RenameTokenMap(pParse, (void*)zName, pName);
    }
  }
  pParse->sNameToken = *pName;
  if( zName==0 ) return;
  if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
    goto begin_table_error;
  }
  if( db->init.iDb==1 ) isTemp = 1;
#ifndef SQLITE_OMIT_AUTHORIZATION
  assert( isTemp==0 || isTemp==1 );
  assert( isView==0 || isView==1 );
  {
................................................................................
      Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[0].pExpr);
      sqlite3RenameTokenRemap(pParse, &pTab->iPKey, pCExpr);
    }
    pTab->iPKey = iCol;
    pTab->keyConf = (u8)onError;
    assert( autoInc==0 || autoInc==1 );
    pTab->tabFlags |= autoInc*TF_Autoincrement;
    if( pList ) pParse->iPkSortOrder = pList->a[0].sortOrder;
  }else if( autoInc ){
#ifndef SQLITE_OMIT_AUTOINCREMENT
    sqlite3ErrorMsg(pParse, "AUTOINCREMENT is only allowed on an "
       "INTEGER PRIMARY KEY");
#endif
  }else{
    sqlite3CreateIndex(pParse, 0, 0, 0, pList, onError, 0,
................................................................................
**
** For virtual tables, only (1) is performed.
*/
static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
  Index *pIdx;
  Index *pPk;
  int nPk;

  int i, j;
  sqlite3 *db = pParse->db;
  Vdbe *v = pParse->pVdbe;

  /* Mark every PRIMARY KEY column as NOT NULL (except for imposter tables)
  */
  if( !db->init.imposterTable ){
................................................................................
    sqlite3TokenInit(&ipkToken, pTab->aCol[pTab->iPKey].zName);
    pList = sqlite3ExprListAppend(pParse, 0, 
                  sqlite3ExprAlloc(db, TK_ID, &ipkToken, 0));
    if( pList==0 ) return;
    if( IN_RENAME_OBJECT ){
      sqlite3RenameTokenRemap(pParse, pList->a[0].pExpr, &pTab->iPKey);
    }
    pList->a[0].sortOrder = pParse->iPkSortOrder;
    assert( pParse->pNewTable==pTab );
    pTab->iPKey = -1;
    sqlite3CreateIndex(pParse, 0, 0, 0, pList, pTab->keyConf, 0, 0, 0, 0,
                       SQLITE_IDXTYPE_PRIMARYKEY);
    if( db->mallocFailed || pParse->nErr ) return;
    pPk = sqlite3PrimaryKeyIndex(pTab);

  }else{
    pPk = sqlite3PrimaryKeyIndex(pTab);
    assert( pPk!=0 );

    /*
    ** Remove all redundant columns from the PRIMARY KEY.  For example, change
    ** "PRIMARY KEY(a,b,a,b,c,b,c,d)" into just "PRIMARY KEY(a,b,c,d)".  Later
................................................................................
    ** code assumes the PRIMARY KEY contains no repeated columns.
    */
    for(i=j=1; i<pPk->nKeyCol; i++){
      if( isDupColumn(pPk, j, pPk, i) ){
        pPk->nColumn--;
      }else{
        testcase( hasColumn(pPk->aiColumn, j, pPk->aiColumn[i]) );


        pPk->aiColumn[j++] = pPk->aiColumn[i];
      }
    }
    pPk->nKeyCol = j;
  }
  assert( pPk!=0 );
  pPk->isCovering = 1;
  if( !db->init.imposterTable ) pPk->uniqNotNull = 1;
  nPk = pPk->nKeyCol;

  /* Bypass the creation of the PRIMARY KEY btree and the sqlite_master
  ** table entry. This is only required if currently generating VDBE
  ** code for a CREATE TABLE (not when parsing one as part of reading
  ** a database schema).  */
  if( v && pPk->tnum>0 ){
    assert( db->init.busy==0 );
................................................................................
    }
    assert( pIdx->nColumn>=pIdx->nKeyCol+n );
    assert( pIdx->nColumn>=j );
  }

  /* Add all table columns to the PRIMARY KEY index
  */

  if( nPk<pTab->nCol ){


    if( resizeIndexObject(db, pPk, pTab->nCol) ) return;
    for(i=0, j=nPk; i<pTab->nCol; i++){
      if( !hasColumn(pPk->aiColumn, j, i) ){
        assert( j<pPk->nColumn );
        pPk->aiColumn[j] = i;
        pPk->azColl[j] = sqlite3StrBINARY;
        j++;
      }
    }
    assert( pPk->nColumn==j );
    assert( pTab->nCol==j );
  }else{
    pPk->nColumn = pTab->nCol;
  }
  recomputeColumnsNotIndexed(pPk);
}

#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Return true if zName is a shadow table name in the current database
** connection.
................................................................................
      sqlite3MayAbort(pParse);
      sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
      sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
      pParse->nTab = 2;
      addrTop = sqlite3VdbeCurrentAddr(v) + 1;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
      if( pParse->nErr ) return;
      pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect);
      if( pSelTab==0 ) return;
      assert( p->aCol==0 );
      p->nCol = pSelTab->nCol;
      p->aCol = pSelTab->aCol;
      pSelTab->nCol = 0;
      pSelTab->aCol = 0;
      sqlite3DeleteTable(db, pSelTab);
................................................................................
    n = pParse->nTab;
    sqlite3SrcListAssignCursors(pParse, pSel->pSrc);
    pTable->nCol = -1;
    db->lookaside.bDisable++;
#ifndef SQLITE_OMIT_AUTHORIZATION
    xAuth = db->xAuth;
    db->xAuth = 0;
    pSelTab = sqlite3ResultSetOfSelect(pParse, pSel);
    db->xAuth = xAuth;
#else
    pSelTab = sqlite3ResultSetOfSelect(pParse, pSel);
#endif
    pParse->nTab = n;
    if( pTable->pCheck ){
      /* CREATE VIEW name(arglist) AS ...
      ** The names of the columns in the table are taken from
      ** arglist which is stored in pTable->pCheck.  The pCheck field
      ** normally holds CHECK constraints on an ordinary table, but for
................................................................................
      */
      sqlite3ColumnsFromExprList(pParse, pTable->pCheck, 
                                 &pTable->nCol, &pTable->aCol);
      if( db->mallocFailed==0 
       && pParse->nErr==0
       && pTable->nCol==pSel->pEList->nExpr
      ){
        sqlite3SelectAddColumnTypeAndCollation(pParse, pTable, pSel);

      }
    }else if( pSelTab ){
      /* CREATE VIEW name AS...  without an argument list.  Construct
      ** the column names from the SELECT statement that defines the view.
      */
      assert( pTable->aCol==0 );
      pTable->nCol = pSelTab->nCol;
................................................................................
    }
    if( sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb) ){
      goto exit_drop_table;
    }
  }
#endif
  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 
    && sqlite3StrNICmp(pTab->zName, "sqlite_stat", 11)!=0 ){

    sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName);
    goto exit_drop_table;
  }

#ifndef SQLITE_OMIT_VIEW
  /* Ensure DROP TABLE is not used on a view, and DROP VIEW is not used
  ** on a table.
................................................................................
    p->aSortOrder = (u8*)pExtra;
    p->nColumn = nCol;
    p->nKeyCol = nCol - 1;
    *ppExtra = ((char*)p) + nByte;
  }
  return p;
}






















/*
** Create a new index for an SQL table.  pName1.pName2 is the name of the index 
** and pTblList is the name of the table that is to be indexed.  Both will 
** be NULL for a primary key or an index that is created to satisfy a
** UNIQUE constraint.  If pTable and pIndex are NULL, use pParse->pNewTable
** as the table to be indexed.  pParse->pNewTable is a table that is
................................................................................
    goto exit_create_index;
  }
  if( IN_DECLARE_VTAB && idxType!=SQLITE_IDXTYPE_PRIMARYKEY ){
    goto exit_create_index;
  }
  if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){
    goto exit_create_index;



  }

  /*
  ** Find the table that is to be indexed.  Return early if not found.
  */
  if( pTblName!=0 ){

................................................................................
  ** dealing with a primary key or UNIQUE constraint.  We have to invent our
  ** own name.
  */
  if( pName ){
    zName = sqlite3NameFromToken(db, pName);
    if( zName==0 ) goto exit_create_index;
    assert( pName->z!=0 );
    if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
      goto exit_create_index;
    }
    if( !IN_RENAME_OBJECT ){
      if( !db->init.busy ){
        if( sqlite3FindTable(db, zName, 0)!=0 ){
          sqlite3ErrorMsg(pParse, "there is already a table named %s", zName);
          goto exit_create_index;
................................................................................
    Column *pCol = &pTab->aCol[pTab->nCol-1];
    pCol->colFlags |= COLFLAG_UNIQUE;
    sqlite3TokenInit(&prevCol, pCol->zName);
    pList = sqlite3ExprListAppend(pParse, 0,
              sqlite3ExprAlloc(db, TK_ID, &prevCol, 0));
    if( pList==0 ) goto exit_create_index;
    assert( pList->nExpr==1 );
    sqlite3ExprListSetSortOrder(pList, sortOrder);
  }else{
    sqlite3ExprListCheckLength(pParse, pList, "index");
    if( pParse->nErr ) goto exit_create_index;
  }

  /* Figure out how many bytes of space are required to store explicitly
  ** specified collation sequence names.
................................................................................
      zColl = pTab->aCol[j].zColl;
    }
    if( !zColl ) zColl = sqlite3StrBINARY;
    if( !db->init.busy && !sqlite3LocateCollSeq(pParse, zColl) ){
      goto exit_create_index;
    }
    pIndex->azColl[i] = zColl;
    requestedSortOrder = pListItem->sortOrder & sortOrderMask;
    pIndex->aSortOrder[i] = (u8)requestedSortOrder;
  }

  /* Append the table key to the end of the index.  For WITHOUT ROWID
  ** tables (when pPk!=0) this will be the declared PRIMARY KEY.  For
  ** normal tables (when pPk==0) this will be the rowid.
  */
................................................................................
      ** the Noop with a Goto to jump over the VDBE code generated below. */
      pIndex->tnum = sqlite3VdbeAddOp0(v, OP_Noop);
      sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, iMem, BTREE_BLOBKEY);

      /* Gather the complete text of the CREATE INDEX statement into
      ** the zStmt variable
      */

      if( pStart ){
        int n = (int)(pParse->sLastToken.z - pName->z) + pParse->sLastToken.n;
        if( pName->z[n-1]==';' ) n--;
        /* A named index with an explicit CREATE INDEX statement */
        zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s",
            onError==OE_None ? "" : " UNIQUE", n, pName->z);
      }else{
................................................................................
  }
  if( pKey ){
    assert( sqlite3KeyInfoIsWriteable(pKey) );
    for(i=0; i<nCol; i++){
      const char *zColl = pIdx->azColl[i];
      pKey->aColl[i] = zColl==sqlite3StrBINARY ? 0 :
                        sqlite3LocateCollSeq(pParse, zColl);
      pKey->aSortOrder[i] = pIdx->aSortOrder[i];

    }
    if( pParse->nErr ){
      assert( pParse->rc==SQLITE_ERROR_MISSING_COLLSEQ );
      if( pIdx->bNoQuery==0 ){
        /* Deactivate the index because it contains an unknown collating
        ** sequence.  The only way to reactive the index is to reload the
        ** schema.  Adding the missing collating sequence later does not
................................................................................
  const unsigned char *zNeedle;
  int nHaystack;
  int nNeedle;
  int typeHaystack, typeNeedle;
  int N = 1;
  int isText;
  unsigned char firstChar;



  UNUSED_PARAMETER(argc);
  typeHaystack = sqlite3_value_type(argv[0]);
  typeNeedle = sqlite3_value_type(argv[1]);
  if( typeHaystack==SQLITE_NULL || typeNeedle==SQLITE_NULL ) return;
  nHaystack = sqlite3_value_bytes(argv[0]);
  nNeedle = sqlite3_value_bytes(argv[1]);
  if( nNeedle>0 ){
    if( typeHaystack==SQLITE_BLOB && typeNeedle==SQLITE_BLOB ){
      zHaystack = sqlite3_value_blob(argv[0]);
      zNeedle = sqlite3_value_blob(argv[1]);
      isText = 0;
    }else{
      zHaystack = sqlite3_value_text(argv[0]);
      zNeedle = sqlite3_value_text(argv[1]);
      isText = 1;










    }
    if( zNeedle==0 || (nHaystack && zHaystack==0) ) return;
    firstChar = zNeedle[0];
    while( nNeedle<=nHaystack
       && (zHaystack[0]!=firstChar || memcmp(zHaystack, zNeedle, nNeedle)!=0)
    ){
      N++;
      do{
        nHaystack--;
        zHaystack++;
      }while( isText && (zHaystack[0]&0xc0)==0x80 );
    }
    if( nNeedle>nHaystack ) N = 0;
  }
  sqlite3_result_int(context, N);







}

/*
** Implementation of the printf() function.
*/
static void printfFunc(
  sqlite3_context *context,
................................................................................
    FUNCTION(coalesce,           0, 0, 0, 0                ),
    FUNCTION2(coalesce,         -1, 0, 0, noopFunc,  SQLITE_FUNC_COALESCE),
  };
#ifndef SQLITE_OMIT_ALTERTABLE
  sqlite3AlterFunctions();
#endif
  sqlite3WindowFunctions();
#if defined(SQLITE_ENABLE_STAT3) || defined(SQLITE_ENABLE_STAT4)
  sqlite3AnalyzeFunctions();
#endif
  sqlite3RegisterDateTimeFunctions();
  sqlite3InsertBuiltinFuncs(aBuiltinFunc, ArraySize(aBuiltinFunc));

#if 0  /* Enable to print out how the built-in functions are hashed */
  {
    int i;
    FuncDef *p;
................................................................................
  sqlite3 *db = pParse->db;

  pExpr = sqlite3Expr(db, TK_REGISTER, 0);
  if( pExpr ){
    if( iCol>=0 && iCol!=pTab->iPKey ){
      pCol = &pTab->aCol[iCol];
      pExpr->iTable = regBase + iCol + 1;
      pExpr->affinity = pCol->affinity;
      zColl = pCol->zColl;
      if( zColl==0 ) zColl = db->pDfltColl->zName;
      pExpr = sqlite3ExprAddCollateString(pParse, pExpr, zColl);
    }else{
      pExpr->iTable = regBase;
      pExpr->affinity = SQLITE_AFF_INTEGER;
    }
  }
  return pExpr;
}

/*
** Return an Expr object that refers to column iCol of table pTab which
................................................................................
      Token tFrom;
      Expr *pRaise; 

      tFrom.z = zFrom;
      tFrom.n = nFrom;
      pRaise = sqlite3Expr(db, TK_RAISE, "FOREIGN KEY constraint failed");
      if( pRaise ){
        pRaise->affinity = OE_Abort;
      }
      pSelect = sqlite3SelectNew(pParse, 
          sqlite3ExprListAppend(pParse, 0, pRaise),
          sqlite3SrcListAppend(pParse, 0, &tFrom, 0),
          pWhere,
          0, 0, 0, 0, 0
      );
................................................................................
    sqlite3ExprListDelete(db, pList);
    sqlite3SelectDelete(db, pSelect);
    if( db->mallocFailed==1 ){
      fkTriggerDelete(db, pTrigger);
      return 0;
    }
    assert( pStep!=0 );


    switch( action ){
      case OE_Restrict:
        pStep->op = TK_SELECT; 
        break;
      case OE_Cascade: 
        if( !pChanges ){ 
................................................................................
    pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+1);
    if( !pIdx->zColAff ){
      sqlite3OomFault(db);
      return 0;
    }
    for(n=0; n<pIdx->nColumn; n++){
      i16 x = pIdx->aiColumn[n];

      if( x>=0 ){
        pIdx->zColAff[n] = pTab->aCol[x].affinity;
      }else if( x==XN_ROWID ){
        pIdx->zColAff[n] = SQLITE_AFF_INTEGER;
      }else{
        char aff;
        assert( x==XN_EXPR );
        assert( pIdx->aColExpr!=0 );
        aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr);

        if( aff==0 ) aff = SQLITE_AFF_BLOB;

        pIdx->zColAff[n] = aff;
      }
    }
    pIdx->zColAff[n] = 0;
  }
 
  return pIdx->zColAff;
}

................................................................................
    zColAff = (char *)sqlite3DbMallocRaw(0, pTab->nCol+1);
    if( !zColAff ){
      sqlite3OomFault(db);
      return;
    }

    for(i=0; i<pTab->nCol; i++){

      zColAff[i] = pTab->aCol[i].affinity;
    }
    do{
      zColAff[i--] = 0;
    }while( i>=0 && zColAff[i]==SQLITE_AFF_BLOB );
    pTab->zColAff = zColAff;
  }
  assert( zColAff!=0 );
  i = sqlite3Strlen30NN(zColAff);
  if( i ){
    if( iReg ){
      sqlite3VdbeAddOp4(v, OP_Affinity, iReg, i, 0, zColAff, i);
................................................................................
  }
#ifndef SQLITE_OMIT_UPSERT
  if( pUpsert ){
    if( IsVirtual(pTab) ){
      sqlite3ErrorMsg(pParse, "UPSERT not implemented for virtual table \"%s\"",
              pTab->zName);
      goto insert_cleanup;



    }
    pTabList->a[0].iCursor = iDataCur;
    pUpsert->pUpsertSrc = pTabList;
    pUpsert->regData = regData;
    pUpsert->iDataCur = iDataCur;
    pUpsert->iIdxCur = iIdxCur;
    if( pUpsert->pUpsertTarget ){
................................................................................
                            void (*xInv)(sqlite3_context*,int,sqlite3_value**),
                            void(*xDestroy)(void*));
  /* Version 3.26.0 and later */
  const char *(*normalized_sql)(sqlite3_stmt*);
  /* Version 3.28.0 and later */
  int (*stmt_isexplain)(sqlite3_stmt*);
  int (*value_frombind)(sqlite3_value*);


};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
/* Version 3.25.0 and later */
#define sqlite3_create_window_function sqlite3_api->create_window_function
/* Version 3.26.0 and later */
#define sqlite3_normalized_sql         sqlite3_api->normalized_sql
/* Version 3.28.0 and later */
#define sqlite3_stmt_isexplain         sqlite3_api->isexplain
#define sqlite3_value_frombind         sqlite3_api->frombind


#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
  /* This case when the file really is being compiled as a loadable 
  ** extension */
# define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;
................................................................................
#ifdef SQLITE_ENABLE_NORMALIZE
  sqlite3_normalized_sql,
#else
  0,
#endif
  /* Version 3.28.0 and later */
  sqlite3_stmt_isexplain,
  sqlite3_value_frombind


};

/*
** Attempt to load an SQLite extension library contained in the file
** zFile.  The entry point is zProc.  zProc may be 0 in which case a
** default entry point name (sqlite3_extension_init) is used.  Use
** of the default name is recommended.
................................................................................
 {/* zName:     */ "fullfsync",
  /* ePragTyp:  */ PragTyp_FLAG,
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ SQLITE_FullFSync },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
#if defined(SQLITE_INTROSPECTION_PRAGMAS)
 {/* zName:     */ "function_list",
  /* ePragTyp:  */ PragTyp_FUNCTION_LIST,
  /* ePragFlg:  */ PragFlg_Result0,
  /* ColNames:  */ 41, 2,
  /* iArg:      */ 0 },
#endif
#endif
................................................................................
  /* ePragTyp:  */ PragTyp_MMAP_SIZE,
  /* ePragFlg:  */ 0,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
#if !defined(SQLITE_OMIT_VIRTUALTABLE)
#if defined(SQLITE_INTROSPECTION_PRAGMAS)
 {/* zName:     */ "module_list",
  /* ePragTyp:  */ PragTyp_MODULE_LIST,
  /* ePragFlg:  */ PragFlg_Result0,
  /* ColNames:  */ 9, 1,
  /* iArg:      */ 0 },
#endif
#endif
................................................................................
 {/* zName:     */ "parser_trace",
  /* ePragTyp:  */ PragTyp_FLAG,
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ SQLITE_ParserTrace },
#endif
#endif
#if defined(SQLITE_INTROSPECTION_PRAGMAS)
 {/* zName:     */ "pragma_list",
  /* ePragTyp:  */ PragTyp_PRAGMA_LIST,
  /* ePragFlg:  */ PragFlg_Result0,
  /* ColNames:  */ 9, 1,
  /* iArg:      */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
................................................................................
 {/* zName:     */ "writable_schema",
  /* ePragTyp:  */ PragTyp_FLAG,
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ SQLITE_WriteSchema|SQLITE_NoSchemaError },
#endif
};
/* Number of pragmas: 62 on by default, 81 total. */

/************** End of pragma.h **********************************************/
/************** Continuing where we left off in pragma.c *********************/

/*
** Interpret the given string as a safety level.  Return 0 for OFF,
** 1 for ON or NORMAL, 2 for FULL, and 3 for EXTRA.  Return 1 for an empty or 
................................................................................
  break;
#endif

  case PragTyp_INDEX_INFO: if( zRight ){
    Index *pIdx;
    Table *pTab;
    pIdx = sqlite3FindIndex(db, zRight, zDb);









    if( pIdx ){
      int iIdxDb = sqlite3SchemaToIndex(db, pIdx->pSchema);
      int i;
      int mx;
      if( pPragma->iArg ){
        /* PRAGMA index_xinfo (newer version with more rows and columns) */
        mx = pIdx->nColumn;
................................................................................
    for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
      CollSeq *pColl = (CollSeq *)sqliteHashData(p);
      sqlite3VdbeMultiLoad(v, 1, "is", i++, pColl->zName);
    }
  }
  break;

#ifdef SQLITE_INTROSPECTION_PRAGMAS
  case PragTyp_FUNCTION_LIST: {
    int i;
    HashElem *j;
    FuncDef *p;
    pParse->nMem = 2;
    for(i=0; i<SQLITE_FUNC_HASH_SZ; i++){
      for(p=sqlite3BuiltinFunctions.a[i]; p; p=p->u.pHash ){
................................................................................
/*
** This is the callback routine for the code that initializes the
** database.  See sqlite3Init() below for additional information.
** This routine is also called from the OP_ParseSchema opcode of the VDBE.
**
** Each callback contains the following information:
**

**     argv[0] = name of thing being created

**     argv[1] = root page number for table or index. 0 for trigger or view.
**     argv[2] = SQL text for the CREATE statement.
**
*/
SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char **NotUsed){
  InitData *pData = (InitData*)pInit;
  sqlite3 *db = pData->db;
  int iDb = pData->iDb;

  assert( argc==3 );
  UNUSED_PARAMETER2(NotUsed, argc);
  assert( sqlite3_mutex_held(db->mutex) );
  DbClearProperty(db, iDb, DB_Empty);
  pData->nInitRow++;
  if( db->mallocFailed ){
    corruptSchema(pData, argv[0], 0);
    return 1;
  }

  assert( iDb>=0 && iDb<db->nDb );
  if( argv==0 ) return 0;   /* Might happen if EMPTY_RESULT_CALLBACKS are on */
  if( argv[1]==0 ){
    corruptSchema(pData, argv[0], 0);
  }else if( sqlite3_strnicmp(argv[2],"create ",7)==0 ){
    /* Call the parser to process a CREATE TABLE, INDEX or VIEW.
    ** But because db->init.busy is set to 1, no VDBE code is generated
    ** or executed.  All the parser does is build the internal data
    ** structures that describe the table, index, or view.
    */
    int rc;
    u8 saved_iDb = db->init.iDb;
    sqlite3_stmt *pStmt;
    TESTONLY(int rcp);            /* Return code from sqlite3_prepare() */

    assert( db->init.busy );
    db->init.iDb = iDb;
    db->init.newTnum = sqlite3Atoi(argv[1]);
    db->init.orphanTrigger = 0;

    TESTONLY(rcp = ) sqlite3_prepare(db, argv[2], -1, &pStmt, 0);
    rc = db->errCode;
    assert( (rc&0xFF)==(rcp&0xFF) );
    db->init.iDb = saved_iDb;
    /* assert( saved_iDb==0 || (db->mDbFlags & DBFLAG_Vacuum)!=0 ); */
    if( SQLITE_OK!=rc ){
      if( db->init.orphanTrigger ){
        assert( iDb==1 );
      }else{
        pData->rc = rc;
        if( rc==SQLITE_NOMEM ){
          sqlite3OomFault(db);
        }else if( rc!=SQLITE_INTERRUPT && (rc&0xFF)!=SQLITE_LOCKED ){
          corruptSchema(pData, argv[0], sqlite3_errmsg(db));
        }
      }
    }
    sqlite3_finalize(pStmt);
  }else if( argv[0]==0 || (argv[2]!=0 && argv[2][0]!=0) ){
    corruptSchema(pData, argv[0], 0);
  }else{
    /* If the SQL column is blank it means this is an index that
    ** was created to be the PRIMARY KEY or to fulfill a UNIQUE
    ** constraint for a CREATE TABLE.  The index should have already
    ** been created when we processed the CREATE TABLE.  All we have
    ** to do here is record the root page number for that index.
    */
    Index *pIndex;
    pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName);
    if( pIndex==0
     || sqlite3GetInt32(argv[1],&pIndex->tnum)==0
     || pIndex->tnum<2
     || sqlite3IndexHasDuplicateRootPage(pIndex)
    ){
      corruptSchema(pData, argv[0], pIndex?"invalid rootpage":"orphan index");
    }
  }
  return 0;
}

/*
** Attempt to read the database schema and initialize internal
................................................................................
SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFlags){
  int rc;
  int i;
#ifndef SQLITE_OMIT_DEPRECATED
  int size;
#endif
  Db *pDb;
  char const *azArg[4];
  int meta[5];
  InitData initData;
  const char *zMasterName;
  int openedTransaction = 0;

  assert( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 );
  assert( iDb>=0 && iDb<db->nDb );
................................................................................
  db->init.busy = 1;

  /* Construct the in-memory representation schema tables (sqlite_master or
  ** sqlite_temp_master) by invoking the parser directly.  The appropriate
  ** table name will be inserted automatically by the parser so we can just
  ** use the abbreviation "x" here.  The parser will also automatically tag
  ** the schema table as read-only. */

  azArg[0] = zMasterName = SCHEMA_TABLE(iDb);

  azArg[1] = "1";
  azArg[2] = "CREATE TABLE x(type text,name text,tbl_name text,"
                            "rootpage int,sql text)";
  azArg[3] = 0;
  initData.db = db;
  initData.iDb = iDb;
  initData.rc = SQLITE_OK;
  initData.pzErrMsg = pzErrMsg;
  initData.mInitFlags = mFlags;
  initData.nInitRow = 0;
  sqlite3InitCallback(&initData, 3, (char **)azArg, 0);
  if( initData.rc ){
    rc = initData.rc;
    goto error_out;
  }

  /* Create a cursor to hold the database open
  */
................................................................................

  /* Read the schema information out of the schema tables
  */
  assert( db->init.busy );
  {
    char *zSql;
    zSql = sqlite3MPrintf(db, 
        "SELECT name, rootpage, sql FROM \"%w\".%s ORDER BY rowid",
        db->aDb[iDb].zDbSName, zMasterName);
#ifndef SQLITE_OMIT_AUTHORIZATION
    {
      sqlite3_xauth xAuth;
      xAuth = db->xAuth;
      db->xAuth = 0;
#endif
................................................................................
  }
  if( pzTail ){
    *pzTail = sParse.zTail;
  }
  rc = sParse.rc;

#ifndef SQLITE_OMIT_EXPLAIN
  if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){



    static const char * const azColName[] = {
       "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment",
       "id", "parent", "notused", "detail"
    };
    int iFirst, mx;
    if( sParse.explain==2 ){
      sqlite3VdbeSetNumCols(sParse.pVdbe, 4);
................................................................................
    }
  }
#endif

  if( db->init.busy==0 ){
    sqlite3VdbeSetSql(sParse.pVdbe, zSql, (int)(sParse.zTail-zSql), prepFlags);
  }
  if( sParse.pVdbe && (rc!=SQLITE_OK || db->mallocFailed) ){
    sqlite3VdbeFinalize(sParse.pVdbe);
    assert(!(*ppStmt));
  }else{
    *ppStmt = (sqlite3_stmt*)sParse.pVdbe;
  }

  if( zErrMsg ){
    sqlite3ErrorWithMsg(db, rc, "%s", zErrMsg);
................................................................................
    sqlite3ExprDelete(db, p->pLimit);
#ifndef SQLITE_OMIT_WINDOWFUNC
    if( OK_IF_ALWAYS_TRUE(p->pWinDefn) ){
      sqlite3WindowListDelete(db, p->pWinDefn);
    }
#endif
    if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);

    if( bFree ) sqlite3DbFreeNN(db, p);
    p = pPrior;
    bFree = 1;
  }
}

/*
................................................................................
    }
    VdbeCoverage(v);
    sqlite3VdbeAddOp3(v, OP_Compare, regPrevKey, regBase, pSort->nOBSat);
    pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex);
    if( pParse->db->mallocFailed ) return;
    pOp->p2 = nKey + nData;
    pKI = pOp->p4.pKeyInfo;
    memset(pKI->aSortOrder, 0, pKI->nKeyField); /* Makes OP_Jump testable */
    sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO);
    testcase( pKI->nAllField > pKI->nKeyField+2 );
    pOp->p4.pKeyInfo = sqlite3KeyInfoFromExprList(pParse,pSort->pOrderBy,nOBSat,
                                           pKI->nAllField-pKI->nKeyField-1);
    addrJmp = sqlite3VdbeCurrentAddr(v);
    sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v);
    pSort->labelBkOut = sqlite3VdbeMakeLabel(pParse);
................................................................................
** Allocate a KeyInfo object sufficient for an index of N key columns and
** X extra columns.
*/
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){
  int nExtra = (N+X)*(sizeof(CollSeq*)+1) - sizeof(CollSeq*);
  KeyInfo *p = sqlite3DbMallocRawNN(db, sizeof(KeyInfo) + nExtra);
  if( p ){
    p->aSortOrder = (u8*)&p->aColl[N+X];
    p->nKeyField = (u16)N;
    p->nAllField = (u16)(N+X);
    p->enc = ENC(db);
    p->db = db;
    p->nRef = 1;
    memset(&p[1], 0, nExtra);
  }else{
................................................................................

  nExpr = pList->nExpr;
  pInfo = sqlite3KeyInfoAlloc(db, nExpr-iStart, nExtra+1);
  if( pInfo ){
    assert( sqlite3KeyInfoIsWriteable(pInfo) );
    for(i=iStart, pItem=pList->a+iStart; i<nExpr; i++, pItem++){
      pInfo->aColl[i-iStart] = sqlite3ExprNNCollSeq(pParse, pItem->pExpr);
      pInfo->aSortOrder[i-iStart] = pItem->sortOrder;
    }
  }
  return pInfo;
}

/*
** Name of the connection operator, used for error messages.
................................................................................
  char const *zOrigDb = 0;
  char const *zOrigTab = 0;
  char const *zOrigCol = 0;
#endif

  assert( pExpr!=0 );
  assert( pNC->pSrcList!=0 );
  assert( pExpr->op!=TK_AGG_COLUMN );  /* This routine runes before aggregates
                                       ** are processed */
  switch( pExpr->op ){
    case TK_COLUMN: {
      /* The expression is a column. Locate the table the column is being
      ** extracted from in NameContext.pSrcList. This table may be real
      ** database table or a subquery.
      */
      Table *pTab = 0;            /* Table structure column is extracted from */
................................................................................

  for(i=0, pCol=aCol; i<nCol && !db->mallocFailed; i++, pCol++){
    /* Get an appropriate name for the column
    */
    if( (zName = pEList->a[i].zName)!=0 ){
      /* If the column contains an "AS <name>" phrase, use <name> as the name */
    }else{
      Expr *pColExpr = sqlite3ExprSkipCollate(pEList->a[i].pExpr);
      while( pColExpr->op==TK_DOT ){
        pColExpr = pColExpr->pRight;
        assert( pColExpr!=0 );
      }
      assert( pColExpr->op!=TK_AGG_COLUMN );
      if( pColExpr->op==TK_COLUMN ){
        /* For columns use the column name name */
        int iCol = pColExpr->iColumn;
        Table *pTab = pColExpr->y.pTab;
        assert( pTab!=0 );
        if( iCol<0 ) iCol = pTab->iPKey;
        zName = iCol>=0 ? pTab->aCol[iCol].zName : "rowid";
................................................................................
**
** This routine requires that all identifiers in the SELECT
** statement be resolved.
*/
SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(
  Parse *pParse,        /* Parsing contexts */
  Table *pTab,          /* Add column type information to this table */
  Select *pSelect       /* SELECT used to determine types and collations */

){
  sqlite3 *db = pParse->db;
  NameContext sNC;
  Column *pCol;
  CollSeq *pColl;
  int i;
  Expr *p;
................................................................................
      n = sqlite3Strlen30(pCol->zName);
      pCol->zName = sqlite3DbReallocOrFree(db, pCol->zName, n+m+2);
      if( pCol->zName ){
        memcpy(&pCol->zName[n+1], zType, m+1);
        pCol->colFlags |= COLFLAG_HASTYPE;
      }
    }
    if( pCol->affinity==0 ) pCol->affinity = SQLITE_AFF_BLOB;
    pColl = sqlite3ExprCollSeq(pParse, p);
    if( pColl && pCol->zColl==0 ){
      pCol->zColl = sqlite3DbStrDup(db, pColl->zName);
    }
  }
  pTab->szTabRow = 1; /* Any non-zero value works */
}

/*
** Given a SELECT statement, generate a Table structure that describes
** the result set of that SELECT.
*/
SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){
  Table *pTab;
  sqlite3 *db = pParse->db;
  u64 savedFlags;

  savedFlags = db->flags;
  db->flags &= ~(u64)SQLITE_FullColNames;
  db->flags |= SQLITE_ShortColNames;
................................................................................
  if( pTab==0 ){
    return 0;
  }
  pTab->nTabRef = 1;
  pTab->zName = 0;
  pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) );
  sqlite3ColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol);
  sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSelect);
  pTab->iPKey = -1;
  if( db->mallocFailed ){
    sqlite3DeleteTable(db, pTab);
    return 0;
  }
  return pTab;
}
................................................................................
        pColl = multiSelectCollSeq(pParse, p, pItem->u.x.iOrderByCol-1);
        if( pColl==0 ) pColl = db->pDfltColl;
        pOrderBy->a[i].pExpr =
          sqlite3ExprAddCollateString(pParse, pTerm, pColl->zName);
      }
      assert( sqlite3KeyInfoIsWriteable(pRet) );
      pRet->aColl[i] = pColl;
      pRet->aSortOrder[i] = pOrderBy->a[i].sortOrder;
    }
  }

  return pRet;
}

#ifndef SQLITE_OMIT_CTE
................................................................................
                           pIn->iSdst, pIn->nSdst);
      sqlite3ReleaseTempReg(pParse, r1);
      break;
    }

    /* If this is a scalar select that is part of an expression, then
    ** store the results in the appropriate memory cell and break out
    ** of the scan loop.

    */
    case SRT_Mem: {

      assert( pIn->nSdst==1 || pParse->nErr>0 );  testcase( pIn->nSdst!=1 );
      sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSDParm, 1);

      /* The LIMIT clause will jump out of the loop for us */
      break;
    }
#endif /* #ifndef SQLITE_OMIT_SUBQUERY */

    /* The results are stored in a sequence of registers
    ** starting at pDest->iSdst.  Then the co-routine yields.
................................................................................
    pParse->nMem += nExpr+1;
    sqlite3VdbeAddOp2(v, OP_Integer, 0, regPrev);
    pKeyDup = sqlite3KeyInfoAlloc(db, nExpr, 1);
    if( pKeyDup ){
      assert( sqlite3KeyInfoIsWriteable(pKeyDup) );
      for(i=0; i<nExpr; i++){
        pKeyDup->aColl[i] = multiSelectCollSeq(pParse, p, i);
        pKeyDup->aSortOrder[i] = 0;
      }
    }
  }
 
  /* Separate the left and the right query from one another
  */
  p->pPrior = 0;
................................................................................
        }
        if( pNew && ExprHasProperty(pExpr,EP_FromJoin) ){
          pNew->iRightJoinTable = pExpr->iRightJoinTable;
          ExprSetProperty(pNew, EP_FromJoin);
        }
        sqlite3ExprDelete(db, pExpr);
        pExpr = pNew;












      }
    }
  }else{
    if( pExpr->op==TK_IF_NULL_ROW && pExpr->iTable==pSubst->iTable ){
      pExpr->iTable = pSubst->iNewTable;
    }
    pExpr->pLeft = substExpr(pSubst, pExpr->pLeft);
................................................................................
  ** will scan expressions looking for iParent references and replace
  ** those references with expressions that resolve to the subquery FROM
  ** elements we are now copying in.
  */
  for(pParent=p; pParent; pParent=pParent->pPrior, pSub=pSub->pPrior){
    int nSubSrc;
    u8 jointype = 0;

    pSubSrc = pSub->pSrc;     /* FROM clause of subquery */
    nSubSrc = pSubSrc->nSrc;  /* Number of terms in subquery FROM clause */
    pSrc = pParent->pSrc;     /* FROM clause of the outer query */

    if( pSrc ){
      assert( pParent==p );  /* First time through the loop */
      jointype = pSubitem->fg.jointype;
................................................................................
** analysis.
*/
static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
  int eRet = WHERE_ORDERBY_NORMAL;      /* Return value */
  ExprList *pEList = pFunc->x.pList;    /* Arguments to agg function */
  const char *zFunc;                    /* Name of aggregate function pFunc */
  ExprList *pOrderBy;
  u8 sortOrder;

  assert( *ppMinMax==0 );
  assert( pFunc->op==TK_AGG_FUNCTION );

  if( pEList==0 || pEList->nExpr!=1 ) return eRet;


  zFunc = pFunc->u.zToken;
  if( sqlite3StrICmp(zFunc, "min")==0 ){
    eRet = WHERE_ORDERBY_MIN;
    sortOrder = SQLITE_SO_ASC;
  }else if( sqlite3StrICmp(zFunc, "max")==0 ){
    eRet = WHERE_ORDERBY_MAX;
    sortOrder = SQLITE_SO_DESC;
  }else{
    return eRet;
  }
  *ppMinMax = pOrderBy = sqlite3ExprListDup(db, pEList, 0);
  assert( pOrderBy!=0 || db->mallocFailed );
  if( pOrderBy ) pOrderBy->a[0].sortOrder = sortOrder;
  return eRet;
}

/*
** The select statement passed as the first argument is an aggregate query.
** The second argument is the associated aggregate-info object. This 
** function tests if the SELECT is of the form:
................................................................................
  pExpr = p->pEList->a[0].pExpr;
  assert( pTab && !pTab->pSelect && pExpr );

  if( IsVirtual(pTab) ) return 0;
  if( pExpr->op!=TK_AGG_FUNCTION ) return 0;
  if( NEVER(pAggInfo->nFunc==0) ) return 0;
  if( (pAggInfo->aFunc[0].pFunc->funcFlags&SQLITE_FUNC_COUNT)==0 ) return 0;
  if( pExpr->flags&EP_Distinct ) return 0;

  return pTab;
}

/*
** If the source-list item passed as an argument was augmented with an
** INDEXED BY clause, then try to locate the specified index. If there
................................................................................
      }
#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE)
      if( IsVirtual(pTab) || pTab->pSelect ){
        i16 nCol;
        u8 eCodeOrig = pWalker->eCode;
        if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort;
        assert( pFrom->pSelect==0 );




        pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0);
        nCol = pTab->nCol;
        pTab->nCol = -1;
        pWalker->eCode = 1;  /* Turn on Select.selId renumbering */
        sqlite3WalkSelect(pWalker, pFrom->pSelect);
        pWalker->eCode = eCodeOrig;
        pTab->nCol = nCol;
................................................................................
    Table *pTab = pFrom->pTab;
    assert( pTab!=0 );
    if( (pTab->tabFlags & TF_Ephemeral)!=0 ){
      /* A sub-query in the FROM clause of a SELECT */
      Select *pSel = pFrom->pSelect;
      if( pSel ){
        while( pSel->pPrior ) pSel = pSel->pPrior;
        sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSel);

      }
    }
  }
}
#endif


................................................................................
  pAggInfo->directMode = 1;
  for(i=0, pF=pAggInfo->aFunc; i<pAggInfo->nFunc; i++, pF++){
    int nArg;
    int addrNext = 0;
    int regAgg;
    ExprList *pList = pF->pExpr->x.pList;
    assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );



















    if( pList ){
      nArg = pList->nExpr;
      regAgg = sqlite3GetTempRange(pParse, nArg);
      sqlite3ExprCodeExprList(pParse, pList, regAgg, 0, SQLITE_ECEL_DUP);
    }else{
      nArg = 0;
      regAgg = 0;
    }
    if( pF->iDistinct>=0 ){

      addrNext = sqlite3VdbeMakeLabel(pParse);

      testcase( nArg==0 );  /* Error condition */
      testcase( nArg>1 );   /* Also an error */
      codeDistinct(pParse, pF->iDistinct, addrNext, 1, regAgg);
    }
    if( pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){
      CollSeq *pColl = 0;
      struct ExprList_item *pItem;
................................................................................
  }
  if( regHit ){
    addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); VdbeCoverage(v);
  }
  for(i=0, pC=pAggInfo->aCol; i<pAggInfo->nAccumulator; i++, pC++){
    sqlite3ExprCode(pParse, pC->pExpr, pC->iMem);
  }

  pAggInfo->directMode = 0;
  if( addrHitTest ){
    sqlite3VdbeJumpHere(v, addrHitTest);
  }
}

/*
................................................................................
** within the HAVING expression with a constant "1".
*/
static int havingToWhereExprCb(Walker *pWalker, Expr *pExpr){
  if( pExpr->op!=TK_AND ){
    Select *pS = pWalker->u.pSelect;
    if( sqlite3ExprIsConstantOrGroupBy(pWalker->pParse, pExpr, pS->pGroupBy) ){
      sqlite3 *db = pWalker->pParse->db;
      Expr *pNew = sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[1], 0);
      if( pNew ){
        Expr *pWhere = pS->pWhere;
        SWAP(Expr, *pNew, *pExpr);
        pNew = sqlite3ExprAnd(pWalker->pParse, pWhere, pNew);
        pS->pWhere = pNew;
        pWalker->eCode = 1;
      }
................................................................................
    ** have a column named by the empty string, in which case there is no way to
    ** distinguish between an unreferenced table and an actual reference to the
    ** "" column. The original design was for the fake column name to be a NULL,
    ** which would be unambiguous.  But legacy authorization callbacks might
    ** assume the column name is non-NULL and segfault.  The use of an empty
    ** string for the fake column name seems safer.
    */
    if( pItem->colUsed==0 ){
      sqlite3AuthCheck(pParse, SQLITE_READ, pItem->zName, "", pItem->zDatabase);
    }

#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
    /* Generate code for all sub-queries in the FROM clause
    */
    pSub = pItem->pSelect;
    if( pSub==0 ) continue;

    /* The code for a subquery should only be generated once, though it is
    ** technically harmless for it to be generated multiple times. The
    ** following assert() will detect if something changes to cause
    ** the same subquery to be coded multiple times, as a signal to the
    ** developers to try to optimize the situation. */







    assert( pItem->addrFillSub==0 );

    /* Increment Parse.nHeight by the height of the largest expression
    ** tree referred to by this, the parent select. The child select
    ** may contain expression trees of at most
    ** (SQLITE_MAX_EXPR_DEPTH-Parse.nHeight) height. This is a bit
    ** more conservative than necessary, but much easier than enforcing
    ** an exact limit.
................................................................................
      ** is a register allocated to hold the subroutine return address
      */
      int topAddr;
      int onceAddr = 0;
      int retAddr;
      struct SrcList_item *pPrior;

      assert( pItem->addrFillSub==0 );
      pItem->regReturn = ++pParse->nMem;
      topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn);
      pItem->addrFillSub = topAddr+1;
      if( pItem->fg.isCorrelated==0 ){
        /* If the subquery is not correlated and if we are not inside of
        ** a trigger, then we only need to compute the value of the subquery
        ** once. */
................................................................................
        pItem->u.x.iAlias = 0;
      }
      for(k=pGroupBy->nExpr, pItem=pGroupBy->a; k>0; k--, pItem++){
        pItem->u.x.iAlias = 0;
      }
      assert( 66==sqlite3LogEst(100) );
      if( p->nSelectRow>66 ) p->nSelectRow = 66;
























    }else{
      assert( 0==sqlite3LogEst(1) );
      p->nSelectRow = 0;
    }

    /* If there is both a GROUP BY and an ORDER BY clause and they are
    ** identical, then it may be possible to disable the ORDER BY clause 
    ** on the grounds that the GROUP BY will cause elements to come out 
    ** in the correct order. It also may not - the GROUP BY might use a
    ** database index that causes rows to be grouped together as required
    ** but not actually sorted. Either way, record the fact that the
    ** ORDER BY and GROUP BY clauses are the same by setting the orderByGrp
    ** variable.  */
    if( sqlite3ExprListCompare(pGroupBy, sSort.pOrderBy, -1)==0 ){
      orderByGrp = 1;
    }
 
    /* Create a label to jump to when we want to abort the query */
    addrEnd = sqlite3VdbeMakeLabel(pParse);

    /* Convert TK_COLUMN nodes into TK_AGG_COLUMN and make entries in
    ** sAggInfo for all TK_AGG_FUNCTION nodes in expressions of the
    ** SELECT statement.
    */
................................................................................
    sAggInfo.nAccumulator = sAggInfo.nColumn;
    if( p->pGroupBy==0 && p->pHaving==0 && sAggInfo.nFunc==1 ){
      minMaxFlag = minMaxQuery(db, sAggInfo.aFunc[0].pExpr, &pMinMaxOrderBy);
    }else{
      minMaxFlag = WHERE_ORDERBY_NORMAL;
    }
    for(i=0; i<sAggInfo.nFunc; i++){
      assert( !ExprHasProperty(sAggInfo.aFunc[i].pExpr, EP_xIsSelect) );

      sNC.ncFlags |= NC_InAggFunc;
      sqlite3ExprAnalyzeAggList(&sNC, sAggInfo.aFunc[i].pExpr->x.pList);






      sNC.ncFlags &= ~NC_InAggFunc;
    }
    sAggInfo.mxReg = pParse->nMem;
    if( db->mallocFailed ) goto select_end;
#if SELECTTRACE_ENABLED
    if( sqlite3SelectTrace & 0x400 ){
      int ii;
................................................................................
        sqlite3VdbeAddOp1(v, OP_Close, iCsr);
        explainSimpleCount(pParse, pTab, pBest);
      }else
#endif /* SQLITE_OMIT_BTREECOUNT */
      {
        int regAcc = 0;           /* "populate accumulators" flag */

        /* If there are accumulator registers but no min() or max() functions,
        ** allocate register regAcc. Register regAcc will contain 0 the first
        ** time the inner loop runs, and 1 thereafter. The code generated
        ** by updateAccumulator() only updates the accumulator registers if
        ** regAcc contains 0.  */




        if( sAggInfo.nAccumulator ){
          for(i=0; i<sAggInfo.nFunc; i++){

            if( sAggInfo.aFunc[i].pFunc->funcFlags&SQLITE_FUNC_NEEDCOLL ) break;
          }
          if( i==sAggInfo.nFunc ){
            regAcc = ++pParse->nMem;
            sqlite3VdbeAddOp2(v, OP_Integer, 0, regAcc);
          }
        }
................................................................................
    sqlite3ErrorMsg(pParse, "cannot create triggers on virtual tables");
    goto trigger_cleanup;
  }

  /* Check that the trigger name is not reserved and that no trigger of the
  ** specified name exists */
  zName = sqlite3NameFromToken(db, pName);




  if( !zName || SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
    goto trigger_cleanup;
  }
  assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
  if( !IN_RENAME_OBJECT ){
    if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){
      if( !noErr ){
        sqlite3ErrorMsg(pParse, "trigger %T already exists", pName);
................................................................................
        sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName));
  }

  if( db->init.busy ){
    Trigger *pLink = pTrig;
    Hash *pHash = &db->aDb[iDb].pSchema->trigHash;
    assert( sqlite3SchemaMutexHeld(db, iDb, 0) );

    pTrig = sqlite3HashInsert(pHash, zName, pTrig);
    if( pTrig ){
      sqlite3OomFault(db);
    }else if( pLink->pSchema==pLink->pTabSchema ){
      Table *pTab;
      pTab = sqlite3HashFind(&pLink->pTabSchema->tblHash, pLink->table);
      assert( pTab!=0 );
................................................................................
      pSelect = 0;
    }else{
      pTriggerStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE);
    }
    pTriggerStep->pIdList = pColumn;
    pTriggerStep->pUpsert = pUpsert;
    pTriggerStep->orconf = orconf;



  }else{
    testcase( pColumn );
    sqlite3IdListDelete(db, pColumn);
    testcase( pUpsert );
    sqlite3UpsertDelete(db, pUpsert);
  }
  sqlite3SelectDelete(db, pSelect);
................................................................................
  Vdbe *v;
  sqlite3 *db = pParse->db;
  int iDb;

  iDb = sqlite3SchemaToIndex(pParse->db, pTrigger->pSchema);
  assert( iDb>=0 && iDb<db->nDb );
  pTable = tableOfTrigger(pTrigger);
  assert( pTable );
  assert( pTable->pSchema==pTrigger->pSchema || iDb==1 );
#ifndef SQLITE_OMIT_AUTHORIZATION
  {

    int code = SQLITE_DROP_TRIGGER;
    const char *zDb = db->aDb[iDb].zDbSName;
    const char *zTab = SCHEMA_TABLE(iDb);
    if( iDb==1 ) code = SQLITE_DROP_TEMP_TRIGGER;
    if( sqlite3AuthCheck(pParse, code, pTrigger->zName, pTable->zName, zDb) ||
      sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){
      return;
    }
  }
#endif

  /* Generate code to destroy the database record of the trigger.
  */
  assert( pTable!=0 );
  if( (v = sqlite3GetVdbe(pParse))!=0 ){
    sqlite3NestedParse(pParse,
       "DELETE FROM %Q.%s WHERE name=%Q AND type='trigger'",
       db->aDb[iDb].zDbSName, MASTER_NAME, pTrigger->zName
    );
    sqlite3ChangeCookie(pParse, iDb);
    sqlite3VdbeAddOp4(v, OP_DropTrigger, iDb, 0, 0, pTrigger->zName, 0);
................................................................................

  assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
  pHash = &(db->aDb[iDb].pSchema->trigHash);
  pTrigger = sqlite3HashInsert(pHash, zName, 0);
  if( ALWAYS(pTrigger) ){
    if( pTrigger->pSchema==pTrigger->pTabSchema ){
      Table *pTab = tableOfTrigger(pTrigger);

      Trigger **pp;
      for(pp=&pTab->pTrigger; *pp!=pTrigger; pp=&((*pp)->pNext));
      *pp = (*pp)->pNext;

    }
    sqlite3DeleteTrigger(db, pTrigger);
    db->mDbFlags |= DBFLAG_SchemaChange;
  }
}

/*
................................................................................
      if( aXRef[i]<0 && i!=pTab->iPKey ){
        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regNew+i);
      }
    }
  }

  if( !isView ){
    int addr1 = 0;        /* Address of jump instruction */

    /* Do constraint checks. */
    assert( regOldRowid>0 );
    sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur,
        regNewRowid, regOldRowid, chngKey, onError, labelContinue, &bReplace,
        aXRef, 0);













    /* Do FK constraint checks. */
    if( hasFK ){
      sqlite3FkCheck(pParse, pTab, regOldRowid, 0, aXRef, chngKey);
    }

    /* Delete the index entries associated with the current record.  */
    if( bReplace || chngKey ){
      if( pPk ){
        addr1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey);
      }else{
        addr1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid);
      }
      VdbeCoverageNeverTaken(v);
    }
    sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx, -1);

    /* If changing the rowid value, or if there are foreign key constraints
    ** to process, delete the old record. Otherwise, add a noop OP_Delete
    ** to invoke the pre-update hook.
    **
    ** That (regNew==regnewRowid+1) is true is also important for the 
................................................................................
      sqlite3VdbeAppendP4(v, pTab, P4_TABLE);
    }
#else
    if( hasFK>1 || chngKey ){
      sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, 0);
    }
#endif
    if( bReplace || chngKey ){
      sqlite3VdbeJumpHere(v, addr1);
    }

    if( hasFK ){
      sqlite3FkCheck(pParse, pTab, 0, regNewRowid, aXRef, chngKey);
    }
  
    /* Insert the new index entries and the new record. */
    sqlite3CompleteInsertion(
................................................................................
  Index *pIdx,          /* The UNIQUE constraint that failed */
  int iCur              /* Cursor for pIdx (or pTab if pIdx==NULL) */
){
  Vdbe *v = pParse->pVdbe;
  sqlite3 *db = pParse->db;
  SrcList *pSrc;            /* FROM clause for the UPDATE */
  int iDataCur;


  assert( v!=0 );
  assert( pUpsert!=0 );
  VdbeNoopComment((v, "Begin DO UPDATE of UPSERT"));
  iDataCur = pUpsert->iDataCur;
  if( pIdx && iCur!=iDataCur ){
    if( HasRowid(pTab) ){
................................................................................
      sqlite3VdbeAddOp3(v, OP_SeekRowid, iDataCur, 0, regRowid);
      VdbeCoverage(v);
      sqlite3ReleaseTempReg(pParse, regRowid);
    }else{
      Index *pPk = sqlite3PrimaryKeyIndex(pTab);
      int nPk = pPk->nKeyCol;
      int iPk = pParse->nMem+1;
      int i;
      pParse->nMem += nPk;
      for(i=0; i<nPk; i++){
        int k;
        assert( pPk->aiColumn[i]>=0 );
        k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]);
        sqlite3VdbeAddOp3(v, OP_Column, iCur, k, iPk+i);
        VdbeComment((v, "%s.%s", pIdx->zName,
................................................................................
            "corrupt database", P4_STATIC);
      sqlite3VdbeJumpHere(v, i);
    }
  }
  /* pUpsert does not own pUpsertSrc - the outer INSERT statement does.  So
  ** we have to make a copy before passing it down into sqlite3Update() */
  pSrc = sqlite3SrcListDup(db, pUpsert->pUpsertSrc, 0);






  sqlite3Update(pParse, pSrc, pUpsert->pUpsertSet,
      pUpsert->pUpsertWhere, OE_Abort, 0, 0, pUpsert);
  pUpsert->pUpsertSet = 0;    /* Will have been deleted by sqlite3Update() */
  pUpsert->pUpsertWhere = 0;  /* Will have been deleted by sqlite3Update() */
  VdbeNoopComment((v, "End DO UPDATE of UPSERT"));
}

................................................................................
  int bDeclared;      /* True after sqlite3_declare_vtab() is called */
};

/*
** Construct and install a Module object for a virtual table.  When this
** routine is called, it is guaranteed that all appropriate locks are held
** and the module is not already part of the connection.



*/
SQLITE_PRIVATE Module *sqlite3VtabCreateModule(
  sqlite3 *db,                    /* Database in which module is registered */
  const char *zName,              /* Name assigned to this module */
  const sqlite3_module *pModule,  /* The definition of the module */
  void *pAux,                     /* Context pointer for xCreate/xConnect */
  void (*xDestroy)(void *)        /* Module destructor function */
){
  Module *pMod;






  int nName = sqlite3Strlen30(zName);
  pMod = (Module *)sqlite3Malloc(sizeof(Module) + nName + 1);
  if( pMod==0 ){
    sqlite3OomFault(db);
  }else{
    Module *pDel;


    char *zCopy = (char *)(&pMod[1]);
    memcpy(zCopy, zName, nName+1);
    pMod->zName = zCopy;
    pMod->pModule = pModule;
    pMod->pAux = pAux;
    pMod->xDestroy = xDestroy;
    pMod->pEpoTab = 0;


    pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,(void*)pMod);
    assert( pDel==0 || pDel==pMod );
    if( pDel ){

      sqlite3OomFault(db);
      sqlite3DbFree(db, pDel);
      pMod = 0;



    }
  }
  return pMod;
}

/*
** The actual function that does the work of creating a new module.
................................................................................
  const sqlite3_module *pModule,  /* The definition of the module */
  void *pAux,                     /* Context pointer for xCreate/xConnect */
  void (*xDestroy)(void *)        /* Module destructor function */
){
  int rc = SQLITE_OK;

  sqlite3_mutex_enter(db->mutex);
  if( sqlite3HashFind(&db->aModule, zName) ){
    rc = SQLITE_MISUSE_BKPT;
  }else{
    (void)sqlite3VtabCreateModule(db, zName, pModule, pAux, xDestroy);
  }
  rc = sqlite3ApiExit(db, rc);
  if( rc!=SQLITE_OK && xDestroy ) xDestroy(pAux);
  sqlite3_mutex_leave(db->mutex);
  return rc;
}


................................................................................
  void (*xDestroy)(void *)        /* Module destructor function */
){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT;
#endif
  return createModule(db, zName, pModule, pAux, xDestroy);
}







































/*
** Lock the virtual table so that it cannot be disconnected.
** Locks nest.  Every lock should have a corresponding unlock.
** If an unlock is omitted, resources leaks will occur.  
**
** If a disconnect is attempted while a virtual table is locked,
................................................................................
  assert( db );
  assert( pVTab->nRef>0 );
  assert( db->magic==SQLITE_MAGIC_OPEN || db->magic==SQLITE_MAGIC_ZOMBIE );

  pVTab->nRef--;
  if( pVTab->nRef==0 ){
    sqlite3_vtab *p = pVTab->pVtab;

    if( p ){
      p->pModule->xDisconnect(p);
    }
    sqlite3DbFree(db, pVTab);
  }
}

................................................................................
    }
    sqlite3DbFree(db, pVTable);
  }else if( ALWAYS(pVTable->pVtab) ){
    /* Justification of ALWAYS():  A correct vtab constructor must allocate
    ** the sqlite3_vtab object if successful.  */
    memset(pVTable->pVtab, 0, sizeof(pVTable->pVtab[0]));
    pVTable->pVtab->pModule = pMod->pModule;

    pVTable->nRef = 1;
    if( sCtx.bDeclared==0 ){
      const char *zFormat = "vtable constructor did not declare schema: %s";
      *pzErr = sqlite3MPrintf(db, zFormat, pTab->zName);
      sqlite3VtabUnlock(pVTable);
      rc = SQLITE_ERROR;
    }else{
................................................................................
  int iIdxCur;          /* The VDBE cursor used to access pIdx */
  int addrBrk;          /* Jump here to break out of the loop */
  int addrNxt;          /* Jump here to start the next IN combination */
  int addrSkip;         /* Jump here for next iteration of skip-scan */
  int addrCont;         /* Jump here to continue with the next loop cycle */
  int addrFirst;        /* First instruction of interior of the loop */
  int addrBody;         /* Beginning of the body of this loop */


#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS
  u32 iLikeRepCntr;     /* LIKE range processing counter register (times 2) */
  int addrLikeRep;      /* LIKE range processing address */
#endif
  u8 iFrom;             /* Which entry in the FROM clause */
  u8 op, p3, p5;        /* Opcode, P3 & P5 of the opcode that ends the loop */
  int p1, p2;           /* Operands of the opcode used to ends the loop */
  union {               /* Information that depends on pWLoop->wsFlags */
    struct {
      int nIn;              /* Number of entries in aInLoop[] */
      struct InLoop {
        int iCur;              /* The VDBE cursor used by this IN operator */
        int addrInTop;         /* Top of the IN loop */
        int iBase;             /* Base register of multi-key index record */
................................................................................
  LogEst rRun;          /* Cost of running each loop */
  LogEst nOut;          /* Estimated number of output rows */
  union {
    struct {               /* Information for internal btree tables */
      u16 nEq;               /* Number of equality constraints */
      u16 nBtm;              /* Size of BTM vector */
      u16 nTop;              /* Size of TOP vector */
      u16 nIdxCol;           /* Index column used for ORDER BY */
      Index *pIndex;         /* Index used, or NULL */
    } btree;
    struct {               /* Information for virtual tables */
      int idxNum;            /* Index number */
      u8 needFree;           /* True if sqlite3_free(idxStr) is needed */
      i8 isOrdered;          /* True if satisfies ORDER BY */
      u16 omitMask;          /* Terms that may be omitted */
................................................................................
#define TERM_DYNAMIC    0x01   /* Need to call sqlite3ExprDelete(db, pExpr) */
#define TERM_VIRTUAL    0x02   /* Added by the optimizer.  Do not code */
#define TERM_CODED      0x04   /* This term is already coded */
#define TERM_COPIED     0x08   /* Has a child */
#define TERM_ORINFO     0x10   /* Need to free the WhereTerm.u.pOrInfo object */
#define TERM_ANDINFO    0x20   /* Need to free the WhereTerm.u.pAndInfo obj */
#define TERM_OR_OK      0x40   /* Used during OR-clause processing */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
#  define TERM_VNULL    0x80   /* Manufactured x>NULL or x<=NULL term */
#else
#  define TERM_VNULL    0x00   /* Disabled if not using stat3 */
#endif
#define TERM_LIKEOPT    0x100  /* Virtual terms from the LIKE optimization */
#define TERM_LIKECOND   0x200  /* Conditionally this LIKE operator term */
#define TERM_LIKE       0x400  /* The original LIKE operator */
#define TERM_IS         0x800  /* Term.pExpr is an IS operator */
#define TERM_VARSELECT  0x1000 /* Term.pExpr contains a correlated sub-query */


/*
** An instance of the WhereScan object is used as an iterator for locating
** terms in the WHERE clause that are useful to the query planner.
*/
struct WhereScan {
  WhereClause *pOrigWC;      /* Original, innermost WhereClause */
................................................................................
*/
struct WhereLoopBuilder {
  WhereInfo *pWInfo;        /* Information about this WHERE */
  WhereClause *pWC;         /* WHERE clause terms */
  ExprList *pOrderBy;       /* ORDER BY clause */
  WhereLoop *pNew;          /* Template WhereLoop */
  WhereOrSet *pOrSet;       /* Record best loops here, if not NULL */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  UnpackedRecord *pRec;     /* Probe for stat4 (if required) */
  int nRecValid;            /* Number of valid fields currently in pRec */
#endif
  unsigned int bldFlags;    /* SQLITE_BLDF_* flags */
  unsigned int iPlanLimit;  /* Search limiter */
};

................................................................................
#define WHERE_ONEROW       0x00001000  /* Selects no more than one row */
#define WHERE_MULTI_OR     0x00002000  /* OR using multiple indices */
#define WHERE_AUTO_INDEX   0x00004000  /* Uses an ephemeral index */
#define WHERE_SKIPSCAN     0x00008000  /* Uses the skip-scan algorithm */
#define WHERE_UNQ_WANTED   0x00010000  /* WHERE_ONEROW would have been helpful*/
#define WHERE_PARTIALIDX   0x00020000  /* The automatic index is partial */
#define WHERE_IN_EARLYOUT  0x00040000  /* Perhaps quit IN loops early */


#endif /* !defined(SQLITE_WHEREINT_H) */

/************** End of whereInt.h ********************************************/
/************** Continuing where we left off in wherecode.c ******************/

#ifndef SQLITE_OMIT_EXPLAIN
................................................................................
  }
}

/*
** Code an OP_Affinity opcode to apply the column affinity string zAff
** to the n registers starting at base. 
**
** As an optimization, SQLITE_AFF_BLOB entries (which are no-ops) at the
** beginning and end of zAff are ignored.  If all entries in zAff are
** SQLITE_AFF_BLOB, then no code gets generated.
**
** This routine makes its own copy of zAff so that the caller is free
** to modify zAff after this routine returns.
*/
static void codeApplyAffinity(Parse *pParse, int base, int n, char *zAff){
  Vdbe *v = pParse->pVdbe;
  if( zAff==0 ){
    assert( pParse->db->mallocFailed );
    return;
  }
  assert( v!=0 );

  /* Adjust base and n to skip over SQLITE_AFF_BLOB entries at the beginning
  ** and end of the affinity string.
  */

  while( n>0 && zAff[0]==SQLITE_AFF_BLOB ){
    n--;
    base++;
    zAff++;
  }
  while( n>1 && zAff[n-1]==SQLITE_AFF_BLOB ){
    n--;
  }

  /* Code the OP_Affinity opcode if there is anything left to do. */
  if( n>0 ){
    sqlite3VdbeAddOp4(v, OP_Affinity, base, n, 0, zAff, n);
  }
................................................................................
**
** If pExpr matches, then transform it into a reference to the index column
** that contains the value of pExpr.
*/
static int whereIndexExprTransNode(Walker *p, Expr *pExpr){
  IdxExprTrans *pX = p->u.pIdxTrans;
  if( sqlite3ExprCompare(0, pExpr, pX->pIdxExpr, pX->iTabCur)==0 ){

    pExpr->op = TK_COLUMN;
    pExpr->iTable = pX->iIdxCur;
    pExpr->iColumn = pX->iIdxCol;
    pExpr->y.pTab = 0;
    return WRC_Prune;
  }else{
    return WRC_Continue;
................................................................................
    int nExtraReg = 0;           /* Number of extra registers needed */
    int op;                      /* Instruction opcode */
    char *zStartAff;             /* Affinity for start of range constraint */
    char *zEndAff = 0;           /* Affinity for end of range constraint */
    u8 bSeekPastNull = 0;        /* True to seek past initial nulls */
    u8 bStopAtNull = 0;          /* Add condition to terminate at NULLs */
    int omitTable;               /* True if we use the index only */


    pIdx = pLoop->u.btree.pIndex;
    iIdxCur = pLevel->iIdxCur;
    assert( nEq>=pLoop->nSkip );

    /* If this loop satisfies a sort order (pOrderBy) request that 
    ** was passed to this function to implement a "SELECT min(x) ..." 
    ** query, then the caller will only allow the loop to run for
    ** a single iteration. This means that the first row returned
    ** should not have a NULL value stored in 'x'. If column 'x' is
    ** the first one after the nEq equality constraints in the index,
    ** this requires some special handling.
    */
    assert( pWInfo->pOrderBy==0
         || pWInfo->pOrderBy->nExpr==1
         || (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0 );
    if( (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)!=0
     && pWInfo->nOBSat>0
     && (pIdx->nKeyCol>nEq)
    ){
      assert( pLoop->nSkip==0 );
      bSeekPastNull = 1;
      nExtraReg = 1;
    }

    /* Find any inequality constraint terms for the start and end 
    ** of the range. 
    */
    j = nEq;
    if( pLoop->wsFlags & WHERE_BTM_LIMIT ){
      pRangeStart = pLoop->aLTerm[j++];
      nExtraReg = MAX(nExtraReg, pLoop->u.btree.nBtm);
................................................................................
        j = pIdx->aiColumn[nEq];
        if( (j>=0 && pIdx->pTable->aCol[j].notNull==0) || j==XN_EXPR ){
          bSeekPastNull = 1;
        }
      }
    }
    assert( pRangeEnd==0 || (pRangeEnd->wtFlags & TERM_VNULL)==0 );




















    /* If we are doing a reverse order scan on an ascending index, or
    ** a forward order scan on a descending index, interchange the 
    ** start and end terms (pRangeStart and pRangeEnd).
    */
    if( (nEq<pIdx->nKeyCol && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC))
     || (bRev && pIdx->nKeyCol==nEq)
................................................................................
    */
    codeCursorHint(pTabItem, pWInfo, pLevel, pRangeEnd);
    regBase = codeAllEqualityTerms(pParse,pLevel,bRev,nExtraReg,&zStartAff);
    assert( zStartAff==0 || sqlite3Strlen30(zStartAff)>=nEq );
    if( zStartAff && nTop ){
      zEndAff = sqlite3DbStrDup(db, &zStartAff[nEq]);
    }
    addrNxt = pLevel->addrNxt;

    testcase( pRangeStart && (pRangeStart->eOperator & WO_LE)!=0 );
    testcase( pRangeStart && (pRangeStart->eOperator & WO_GE)!=0 );
    testcase( pRangeEnd && (pRangeEnd->eOperator & WO_LE)!=0 );
    testcase( pRangeEnd && (pRangeEnd->eOperator & WO_GE)!=0 );
    startEq = !pRangeStart || pRangeStart->eOperator & (WO_LE|WO_GE);
    endEq =   !pRangeEnd || pRangeEnd->eOperator & (WO_LE|WO_GE);
................................................................................
      if( sqlite3ExprIsVector(pRight)==0 ){
        disableTerm(pLevel, pRangeStart);
      }else{
        startEq = 1;
      }
      bSeekPastNull = 0;
    }else if( bSeekPastNull ){

      sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq);

      nConstraint++;
      startEq = 0;


      start_constraints = 1;

    }
    codeApplyAffinity(pParse, regBase, nConstraint - bSeekPastNull, zStartAff);
    if( pLoop->nSkip>0 && nConstraint==pLoop->nSkip ){
      /* The skip-scan logic inside the call to codeAllEqualityConstraints()
      ** above has already left the cursor sitting on the correct row,
      ** so no further seeking is needed */
    }else{
      if( pLoop->wsFlags & WHERE_IN_EARLYOUT ){
        sqlite3VdbeAddOp1(v, OP_SeekHit, iIdxCur);
      }





      op = aStartOp[(start_constraints<<2) + (startEq<<1) + bRev];
      assert( op!=0 );
      sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint);
      VdbeCoverage(v);
      VdbeCoverageIf(v, op==OP_Rewind);  testcase( op==OP_Rewind );
      VdbeCoverageIf(v, op==OP_Last);    testcase( op==OP_Last );
      VdbeCoverageIf(v, op==OP_SeekGT);  testcase( op==OP_SeekGT );
      VdbeCoverageIf(v, op==OP_SeekGE);  testcase( op==OP_SeekGE );
      VdbeCoverageIf(v, op==OP_SeekLE);  testcase( op==OP_SeekLE );
      VdbeCoverageIf(v, op==OP_SeekLT);  testcase( op==OP_SeekLT );

















    }

    /* Load the value for the inequality constraint at the end of the
    ** range (if any).
    */
    nConstraint = nEq;
    if( pRangeEnd ){
................................................................................

      if( sqlite3ExprIsVector(pRight)==0 ){
        disableTerm(pLevel, pRangeEnd);
      }else{
        endEq = 1;
      }
    }else if( bStopAtNull ){

      sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq);
      endEq = 0;

      nConstraint++;
    }
    sqlite3DbFree(db, zStartAff);
    sqlite3DbFree(db, zEndAff);

    /* Top of the loop body */
    pLevel->p2 = sqlite3VdbeCurrentAddr(v);

    /* Check if the index cursor is past the end of the range. */
    if( nConstraint ){






      op = aEndOp[bRev*2 + endEq];
      sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint);

















      testcase( op==OP_IdxGT );  VdbeCoverageIf(v, op==OP_IdxGT );
      testcase( op==OP_IdxGE );  VdbeCoverageIf(v, op==OP_IdxGE );
      testcase( op==OP_IdxLT );  VdbeCoverageIf(v, op==OP_IdxLT );
      testcase( op==OP_IdxLE );  VdbeCoverageIf(v, op==OP_IdxLE );
    }

    if( pLoop->wsFlags & WHERE_IN_EARLYOUT ){
................................................................................
  }
  pTerm = &pWC->a[idx = pWC->nTerm++];
  if( p && ExprHasProperty(p, EP_Unlikely) ){
    pTerm->truthProb = sqlite3LogEst(p->iTable) - 270;
  }else{
    pTerm->truthProb = 1;
  }
  pTerm->pExpr = sqlite3ExprSkipCollate(p);
  pTerm->wtFlags = wtFlags;
  pTerm->pWC = pWC;
  pTerm->iParent = -1;
  memset(&pTerm->eOperator, 0,
         sizeof(WhereTerm) - offsetof(WhereTerm,eOperator));
  return idx;
}
................................................................................
** If left/right precedence rules come into play when determining the
** collating sequence, then COLLATE operators are adjusted to ensure
** that the collating sequence does not change.  For example:
** "Y collate NOCASE op X" becomes "X op Y" because any collation sequence on
** the left hand side of a comparison overrides any collation sequence 
** attached to the right. For the same reason the EP_Collate flag
** is not commuted.





*/
static void exprCommute(Parse *pParse, Expr *pExpr){
  u16 expRight = (pExpr->pRight->flags & EP_Collate);
  u16 expLeft = (pExpr->pLeft->flags & EP_Collate);

  assert( allowedOp(pExpr->op) && pExpr->op!=TK_IN );
  if( expRight==expLeft ){
    /* Either X and Y both have COLLATE operator or neither do */
    if( expRight ){
      /* Both X and Y have COLLATE operators.  Make sure X is always
      ** used by clearing the EP_Collate flag from Y. */
      pExpr->pRight->flags &= ~EP_Collate;

    }else if( sqlite3ExprCollSeq(pParse, pExpr->pLeft)!=0 ){
      /* Neither X nor Y have COLLATE operators, but X has a non-default
      ** collating sequence.  So add the EP_Collate marker on X to cause
      ** it to be searched first. */
      pExpr->pLeft->flags |= EP_Collate;

    }
  }
  SWAP(Expr*,pExpr->pRight,pExpr->pLeft);
  if( pExpr->op>=TK_GT ){
    assert( TK_LT==TK_GT+2 );
    assert( TK_GE==TK_LE+2 );
    assert( TK_GT>TK_EQ );
    assert( TK_GT<TK_LE );
    assert( pExpr->op>=TK_GT && pExpr->op<=TK_GE );
    pExpr->op = ((pExpr->op-TK_GT)^2)+TK_GT;
  }

}

/*
** Translate from TK_xx operator to WO_xx bitmask.
*/
static u16 operatorMask(int op){
  u16 c;
................................................................................
        **
        ** Getting this right has been a persistent source of bugs in the
        ** LIKE optimization.  See, for example:
        **    2018-09-10 https://sqlite.org/src/info/c94369cae9b561b1
        **    2019-05-02 https://sqlite.org/src/info/b043a54c3de54b28
        **    2019-06-10 https://sqlite.org/src/info/fd76310a5e843e07
        **    2019-06-14 https://sqlite.org/src/info/ce8717f0885af975

        */
        if( pLeft->op!=TK_COLUMN 
         || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT 
         || IsVirtual(pLeft->y.pTab)  /* Value might be numeric */
        ){
          int isNum;
          double rDummy;
          isNum = sqlite3AtoF(zNew, &rDummy, iTo, SQLITE_UTF8);
          if( isNum<=0 ){



            zNew[iTo-1]++;
            isNum = sqlite3AtoF(zNew, &rDummy, iTo, SQLITE_UTF8);
            zNew[iTo-1]--;

          }
          if( isNum>0 ){
            sqlite3ExprDelete(db, pPrefix);
            sqlite3ValueFree(pVal);
            return 0;
          }
        }
................................................................................
          pTerm->eOperator |= WO_EQUIV;
          eExtraOp = WO_EQUIV;
        }
      }else{
        pDup = pExpr;
        pNew = pTerm;
      }
      exprCommute(pParse, pDup);
      pNew->leftCursor = aiCurCol[0];
      pNew->u.leftColumn = aiCurCol[1];
      testcase( (prereqLeft | extraRight) != prereqLeft );
      pNew->prereqRight = prereqLeft | extraRight;
      pNew->prereqAll = prereqAll;
      pNew->eOperator = (operatorMask(pDup->op) + eExtraOp) & opMask;
    }
................................................................................
      idxNew = whereClauseInsert(pWC, pExpr, TERM_VIRTUAL);
      pWC->a[idxNew].iField = i+1;
      exprAnalyze(pSrc, pWC, idxNew);
      markTermAsChild(pWC, idxNew, idxTerm);
    }
  }

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  /* When sqlite_stat3 histogram data is available an operator of the
  ** form "x IS NOT NULL" can sometimes be evaluated more efficiently
  ** as "x>NULL" if x is not an INTEGER PRIMARY KEY.  So construct a
  ** virtual term of that form.
  **
  ** Note that the virtual term must be tagged with TERM_VNULL.
  */
  if( pExpr->op==TK_NOTNULL
   && pExpr->pLeft->op==TK_COLUMN
   && pExpr->pLeft->iColumn>=0
   && !ExprHasProperty(pExpr, EP_FromJoin)
   && OptimizationEnabled(db, SQLITE_Stat34)
  ){
    Expr *pNewExpr;
    Expr *pLeft = pExpr->pLeft;
    int idxNew;
    WhereTerm *pNewTerm;

    pNewExpr = sqlite3PExpr(pParse, TK_GT,
................................................................................
      pNewTerm->eOperator = WO_GT;
      markTermAsChild(pWC, idxNew, idxTerm);
      pTerm = &pWC->a[idxTerm];
      pTerm->wtFlags |= TERM_COPIED;
      pNewTerm->prereqAll = pTerm->prereqAll;
    }
  }
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

  /* Prevent ON clause terms of a LEFT JOIN from being used to drive
  ** an index for tables to the left of the join.
  */
  testcase( pTerm!=&pWC->a[idxTerm] );
  pTerm = &pWC->a[idxTerm];
  pTerm->prereqRight |= extraRight;
................................................................................
** does is make slot[] entries point to substructure within pExpr.
**
** In the previous sentence and in the diagram, "slot[]" refers to
** the WhereClause.a[] array.  The slot[] array grows as needed to contain
** all terms of the WHERE clause.
*/
SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause *pWC, Expr *pExpr, u8 op){
  Expr *pE2 = sqlite3ExprSkipCollate(pExpr);
  pWC->op = op;
  if( pE2==0 ) return;
  if( pE2->op!=op ){
    whereClauseInsert(pWC, pExpr, 0);
  }else{
    sqlite3WhereSplit(pWC, pE2->pLeft, op);
    sqlite3WhereSplit(pWC, pE2->pRight, op);
................................................................................
         && (iColumn!=XN_EXPR
             || sqlite3ExprCompareSkip(pTerm->pExpr->pLeft,
                                       pScan->pIdxExpr,iCur)==0)
         && (pScan->iEquiv<=1 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin))
        ){
          if( (pTerm->eOperator & WO_EQUIV)!=0
           && pScan->nEquiv<ArraySize(pScan->aiCur)
           && (pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight))->op==TK_COLUMN

          ){
            int j;
            for(j=0; j<pScan->nEquiv; j++){
              if( pScan->aiCur[j]==pX->iTable
               && pScan->aiColumn[j]==pX->iColumn ){
                  break;
              }
................................................................................
  Index *pIdx,                    /* Index to match column of */
  int iCol                        /* Column of index to match */
){
  int i;
  const char *zColl = pIdx->azColl[iCol];

  for(i=0; i<pList->nExpr; i++){
    Expr *p = sqlite3ExprSkipCollate(pList->a[i].pExpr);
    if( p->op==TK_COLUMN
     && p->iColumn==pIdx->aiColumn[iCol]
     && p->iTable==iBase
    ){
      CollSeq *pColl = sqlite3ExprNNCollSeq(pParse, pList->a[i].pExpr);
      if( 0==sqlite3StrICmp(pColl->zName, zColl) ){
        return i;
................................................................................
  pTab = pTabList->a[0].pTab;

  /* If any of the expressions is an IPK column on table iBase, then return 
  ** true. Note: The (p->iTable==iBase) part of this test may be false if the
  ** current SELECT is a correlated sub-query.
  */
  for(i=0; i<pDistinct->nExpr; i++){
    Expr *p = sqlite3ExprSkipCollate(pDistinct->a[i].pExpr);
    if( p->op==TK_COLUMN && p->iTable==iBase && p->iColumn<0 ) return 1;
  }

  /* Loop through all indices on the table, checking each to see if it makes
  ** the DISTINCT qualifier redundant. It does so if:
  **
  **   1. The index is itself UNIQUE, and
................................................................................
  */
  nOrderBy = 0;
  if( pOrderBy ){
    int n = pOrderBy->nExpr;
    for(i=0; i<n; i++){
      Expr *pExpr = pOrderBy->a[i].pExpr;
      if( pExpr->op!=TK_COLUMN || pExpr->iTable!=pSrc->iCursor ) break;

    }
    if( i==n){
      nOrderBy = n;
    }
  }

  /* Allocate the sqlite3_index_info structure
................................................................................
    }

    j++;
  }
  for(i=0; i<nOrderBy; i++){
    Expr *pExpr = pOrderBy->a[i].pExpr;
    pIdxOrderBy[i].iColumn = pExpr->iColumn;
    pIdxOrderBy[i].desc = pOrderBy->a[i].sortOrder;
  }

  *pmNoOmit = mNoOmit;
  return pIdxInfo;
}

/*
................................................................................
  }
  sqlite3_free(pVtab->zErrMsg);
  pVtab->zErrMsg = 0;
  return rc;
}
#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the location of a particular key among all keys in an
** index.  Store the results in aStat as follows:
**
**    aStat[0]      Est. number of rows less than pRec
**    aStat[1]      Est. number of rows equal to pRec
**
................................................................................
    aStat[1] = pIdx->aAvgEq[nField-1];
  }

  /* Restore the pRec->nField value before returning.  */
  pRec->nField = nField;
  return i;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** If it is not NULL, pTerm is a term that provides an upper or lower
** bound on a range scan. Without considering pTerm, it is estimated 
** that the scan will visit nNew rows. This function returns the number
** estimated to be visited after taking pTerm into account.
**
................................................................................
      nRet -= 20;        assert( 20==sqlite3LogEst(4) );
    }
  }
  return nRet;
}


#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Return the affinity for a single column of an index.
*/
SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3 *db, Index *pIdx, int iCol){
  assert( iCol>=0 && iCol<pIdx->nColumn );
  if( !pIdx->zColAff ){
    if( sqlite3IndexAffinityStr(db, pIdx)==0 ) return SQLITE_AFF_BLOB;
  }

  return pIdx->zColAff[iCol];
}
#endif


#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/* 
** This function is called to estimate the number of rows visited by a
** range-scan on a skip-scan index. For example:
**
**   CREATE INDEX i1 ON t1(a, b, c);
**   SELECT * FROM t1 WHERE a=? AND c BETWEEN ? AND ?;
**
................................................................................

  sqlite3ValueFree(p1);
  sqlite3ValueFree(p2);
  sqlite3ValueFree(pVal);

  return rc;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

/*
** This function is used to estimate the number of rows that will be visited
** by scanning an index for a range of values. The range may have an upper
** bound, a lower bound, or both. The WHERE clause terms that set the upper
** and lower bounds are represented by pLower and pUpper respectively. For
** example, assuming that index p is on t1(a):
................................................................................
  WhereTerm *pUpper,   /* Upper bound on the range. ex: "x<455" Might be NULL */
  WhereLoop *pLoop     /* Modify the .nOut and maybe .rRun fields */
){
  int rc = SQLITE_OK;
  int nOut = pLoop->nOut;
  LogEst nNew;

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  Index *p = pLoop->u.btree.pIndex;
  int nEq = pLoop->u.btree.nEq;

  if( p->nSample>0 && nEq<p->nSampleCol
   && OptimizationEnabled(pParse->db, SQLITE_Stat34)
  ){
    if( nEq==pBuilder->nRecValid ){
      UnpackedRecord *pRec = pBuilder->pRec;
      tRowcnt a[2];
      int nBtm = pLoop->u.btree.nBtm;
      int nTop = pLoop->u.btree.nTop;

................................................................................
      pBuilder->pRec = pRec;
      if( rc==SQLITE_OK ){
        if( iUpper>iLower ){
          nNew = sqlite3LogEst(iUpper - iLower);
          /* TUNING:  If both iUpper and iLower are derived from the same
          ** sample, then assume they are 4x more selective.  This brings
          ** the estimated selectivity more in line with what it would be
          ** if estimated without the use of STAT3/4 tables. */
          if( iLwrIdx==iUprIdx ) nNew -= 20;  assert( 20==sqlite3LogEst(4) );
        }else{
          nNew = 10;        assert( 10==sqlite3LogEst(2) );
        }
        if( nNew<nOut ){
          nOut = nNew;
        }
................................................................................
                    pLoop->nOut, nOut));
  }
#endif
  pLoop->nOut = (LogEst)nOut;
  return rc;
}

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the number of rows that will be returned based on
** an equality constraint x=VALUE and where that VALUE occurs in
** the histogram data.  This only works when x is the left-most
** column of an index and sqlite_stat3 histogram data is available
** for that index.  When pExpr==NULL that means the constraint is
** "x IS NULL" instead of "x=VALUE".
**
** Write the estimated row count into *pnRow and return SQLITE_OK. 
** If unable to make an estimate, leave *pnRow unchanged and return
** non-zero.
**
................................................................................
  whereKeyStats(pParse, p, pRec, 0, a);
  WHERETRACE(0x10,("equality scan regions %s(%d): %d\n",
                   p->zName, nEq-1, (int)a[1]));
  *pnRow = a[1];
  
  return rc;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
/*
** Estimate the number of rows that will be returned based on
** an IN constraint where the right-hand side of the IN operator
** is a list of values.  Example:
**
**        WHERE x IN (1,2,3,4)
**
................................................................................
    if( nRowEst > nRow0 ) nRowEst = nRow0;
    *pnRow = nRowEst;
    WHERETRACE(0x10,("IN row estimate: est=%d\n", nRowEst));
  }
  assert( pBuilder->nRecValid==nRecValid );
  return rc;
}
#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */


#ifdef WHERETRACE_ENABLED
/*
** Print the content of a WhereTerm object
*/
static void whereTermPrint(WhereTerm *pTerm, int iTerm){
................................................................................
static void whereLoopOutputAdjust(
  WhereClause *pWC,      /* The WHERE clause */
  WhereLoop *pLoop,      /* The loop to adjust downward */
  LogEst nRow            /* Number of rows in the entire table */
){
  WhereTerm *pTerm, *pX;
  Bitmask notAllowed = ~(pLoop->prereq|pLoop->maskSelf);
  int i, j, k;
  LogEst iReduce = 0;    /* pLoop->nOut should not exceed nRow-iReduce */

  assert( (pLoop->wsFlags & WHERE_AUTO_INDEX)==0 );
  for(i=pWC->nTerm, pTerm=pWC->a; i>0; i--, pTerm++){

    if( (pTerm->wtFlags & TERM_VIRTUAL)!=0 ) break;
    if( (pTerm->prereqAll & pLoop->maskSelf)==0 ) continue;
    if( (pTerm->prereqAll & notAllowed)!=0 ) continue;
    for(j=pLoop->nLTerm-1; j>=0; j--){
      pX = pLoop->aLTerm[j];
      if( pX==0 ) continue;
      if( pX==pTerm ) break;
................................................................................
        pLoop->nOut += pTerm->truthProb;
      }else{
        /* In the absence of explicit truth probabilities, use heuristics to
        ** guess a reasonable truth probability. */
        pLoop->nOut--;
        if( pTerm->eOperator&(WO_EQ|WO_IS) ){
          Expr *pRight = pTerm->pExpr->pRight;

          testcase( pTerm->pExpr->op==TK_IS );
          if( sqlite3ExprIsInteger(pRight, &k) && k>=(-1) && k<=1 ){
            k = 10;
          }else{
            k = 20;
          }
          if( iReduce<k ) iReduce = k;
................................................................................
  rSize = pProbe->aiRowLogEst[0];
  rLogSize = estLog(rSize);
  for(; rc==SQLITE_OK && pTerm!=0; pTerm = whereScanNext(&scan)){
    u16 eOp = pTerm->eOperator;   /* Shorthand for pTerm->eOperator */
    LogEst rCostIdx;
    LogEst nOutUnadjusted;        /* nOut before IN() and WHERE adjustments */
    int nIn = 0;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    int nRecValid = pBuilder->nRecValid;
#endif
    if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0)
     && indexColumnNotNull(pProbe, saved_nEq)
    ){
      continue; /* ignore IS [NOT] NULL constraints on NOT NULL columns */
    }
................................................................................
        ** first such term in use, and sets nIn back to 0 if it is not. */
        for(i=0; i<pNew->nLTerm-1; i++){
          if( pNew->aLTerm[i] && pNew->aLTerm[i]->pExpr==pExpr ) nIn = 0;
        }
      }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){
        /* "x IN (value, value, ...)" */
        nIn = sqlite3LogEst(pExpr->x.pList->nExpr);
        assert( nIn>0 );  /* RHS always has 2 or more terms...  The parser
                          ** changes "x IN (?)" into "x=?". */
      }
      if( pProbe->hasStat1 ){
        LogEst M, logK, safetyMargin;
        /* Let:
        **   N = the total number of rows in the table
        **   K = the number of entries on the RHS of the IN operator
        **   M = the number of rows in the table that match terms to the 
................................................................................
    /* At this point pNew->nOut is set to the number of rows expected to
    ** be visited by the index scan before considering term pTerm, or the
    ** values of nIn and nInMul. In other words, assuming that all 
    ** "x IN(...)" terms are replaced with "x = ?". This block updates
    ** the value of pNew->nOut to account for pTerm (but not nIn/nInMul).  */
    assert( pNew->nOut==saved_nOut );
    if( pNew->wsFlags & WHERE_COLUMN_RANGE ){
      /* Adjust nOut using stat3/stat4 data. Or, if there is no stat3/stat4
      ** data, using some other estimate.  */
      whereRangeScanEst(pParse, pBuilder, pBtm, pTop, pNew);
    }else{
      int nEq = ++pNew->u.btree.nEq;
      assert( eOp & (WO_ISNULL|WO_EQ|WO_IN|WO_IS) );

      assert( pNew->nOut==saved_nOut );
      if( pTerm->truthProb<=0 && pProbe->aiColumn[saved_nEq]>=0 ){
        assert( (eOp & WO_IN) || nIn==0 );
        testcase( eOp & WO_IN );
        pNew->nOut += pTerm->truthProb;
        pNew->nOut -= nIn;
      }else{
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
        tRowcnt nOut = 0;
        if( nInMul==0 
         && pProbe->nSample 
         && pNew->u.btree.nEq<=pProbe->nSampleCol
         && ((eOp & WO_IN)==0 || !ExprHasProperty(pTerm->pExpr, EP_xIsSelect))
         && OptimizationEnabled(db, SQLITE_Stat34)
        ){
          Expr *pExpr = pTerm->pExpr;
          if( (eOp & (WO_EQ|WO_ISNULL|WO_IS))!=0 ){
            testcase( eOp & WO_EQ );
            testcase( eOp & WO_IS );
            testcase( eOp & WO_ISNULL );
            rc = whereEqualScanEst(pParse, pBuilder, pExpr->pRight, &nOut);
................................................................................
      }
    }

    /* Set rCostIdx to the cost of visiting selected rows in index. Add
    ** it to pNew->rRun, which is currently set to the cost of the index
    ** seek only. Then, if this is a non-covering index, add the cost of
    ** visiting the rows in the main table.  */

    rCostIdx = pNew->nOut + 1 + (15*pProbe->szIdxRow)/pSrc->pTab->szTabRow;
    pNew->rRun = sqlite3LogEstAdd(rLogSize, rCostIdx);
    if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK))==0 ){
      pNew->rRun = sqlite3LogEstAdd(pNew->rRun, pNew->nOut + 16);
    }
    ApplyCostMultiplier(pNew->rRun, pProbe->pTable->costMult);

................................................................................

    if( (pNew->wsFlags & WHERE_TOP_LIMIT)==0
     && pNew->u.btree.nEq<pProbe->nColumn
    ){
      whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nInMul+nIn);
    }
    pNew->nOut = saved_nOut;
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    pBuilder->nRecValid = nRecValid;
#endif
  }
  pNew->prereq = saved_prereq;
  pNew->u.btree.nEq = saved_nEq;
  pNew->u.btree.nBtm = saved_nBtm;
  pNew->u.btree.nTop = saved_nTop;
................................................................................
  ExprList *pOB;
  ExprList *aColExpr;
  int ii, jj;

  if( pIndex->bUnordered ) return 0;
  if( (pOB = pBuilder->pWInfo->pOrderBy)==0 ) return 0;
  for(ii=0; ii<pOB->nExpr; ii++){
    Expr *pExpr = sqlite3ExprSkipCollate(pOB->a[ii].pExpr);
    if( pExpr->op==TK_COLUMN && pExpr->iTable==iCursor ){
      if( pExpr->iColumn<0 ) return 1;
      for(jj=0; jj<pIndex->nKeyCol; jj++){
        if( pExpr->iColumn==pIndex->aiColumn[jj] ) return 1;
      }
    }else if( (aColExpr = pIndex->aColExpr)!=0 ){
      for(jj=0; jj<pIndex->nKeyCol; jj++){
................................................................................
  Parse *pParse = pWC->pWInfo->pParse;
  while( pWhere->op==TK_AND ){
    if( !whereUsablePartialIndex(iTab,pWC,pWhere->pLeft) ) return 0;
    pWhere = pWhere->pRight;
  }
  if( pParse->db->flags & SQLITE_EnableQPSG ) pParse = 0;
  for(i=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){


    Expr *pExpr = pTerm->pExpr;
    if( (!ExprHasProperty(pExpr, EP_FromJoin) || pExpr->iRightJoinTable==iTab)
     && sqlite3ExprImpliesExpr(pParse, pExpr, pWhere, iTab) 
    ){
      return 1;
    }
  }
  return 0;
................................................................................
    if( pBuilder->bldFlags==SQLITE_BLDF_INDEXED ){
      /* If a non-unique index is used, or if a prefix of the key for
      ** unique index is used (making the index functionally non-unique)
      ** then the sqlite_stat1 data becomes important for scoring the
      ** plan */
      pTab->tabFlags |= TF_StatsUsed;
    }
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
    sqlite3Stat4ProbeFree(pBuilder->pRec);
    pBuilder->nRecValid = 0;
    pBuilder->pRec = 0;
#endif
  }
  return rc;
}
................................................................................
      if( wctrlFlags & WHERE_ORDERBY_LIMIT ) continue;
    }else{
      pLoop = pLast;
    }
    if( pLoop->wsFlags & WHERE_VIRTUALTABLE ){
      if( pLoop->u.vtab.isOrdered ) obSat = obDone;
      break;
    }else{
      pLoop->u.btree.nIdxCol = 0;
    }
    iCur = pWInfo->pTabList->a[pLoop->iTab].iCursor;

    /* Mark off any ORDER BY term X that is a column in the table of
    ** the current loop for which there is term in the WHERE
    ** clause of the form X IS NULL or X=? that reference only outer
    ** loops.
    */
    for(i=0; i<nOrderBy; i++){
      if( MASKBIT(i) & obSat ) continue;
      pOBExpr = sqlite3ExprSkipCollate(pOrderBy->a[i].pExpr);
      if( pOBExpr->op!=TK_COLUMN ) continue;
      if( pOBExpr->iTable!=iCur ) continue;
      pTerm = sqlite3WhereFindTerm(&pWInfo->sWC, iCur, pOBExpr->iColumn,
                       ~ready, eqOpMask, 0);
      if( pTerm==0 ) continue;
      if( pTerm->eOperator==WO_IN ){
        /* IN terms are only valid for sorting in the ORDER BY LIMIT 
................................................................................
        return 0;
      }else{
        nKeyCol = pIndex->nKeyCol;
        nColumn = pIndex->nColumn;
        assert( nColumn==nKeyCol+1 || !HasRowid(pIndex->pTable) );
        assert( pIndex->aiColumn[nColumn-1]==XN_ROWID
                          || !HasRowid(pIndex->pTable));
        isOrderDistinct = IsUniqueIndex(pIndex);

      }

      /* Loop through all columns of the index and deal with the ones
      ** that are not constrained by == or IN.
      */
      rev = revSet = 0;
      distinctColumns = 0;
................................................................................
        assert( j>=pLoop->u.btree.nEq 
            || (pLoop->aLTerm[j]==0)==(j<pLoop->nSkip)
        );
        if( j<pLoop->u.btree.nEq && j>=pLoop->nSkip ){
          u16 eOp = pLoop->aLTerm[j]->eOperator;

          /* Skip over == and IS and ISNULL terms.  (Also skip IN terms when
          ** doing WHERE_ORDERBY_LIMIT processing). 



          **
          ** If the current term is a column of an ((?,?) IN (SELECT...)) 
          ** expression for which the SELECT returns more than one column,
          ** check that it is the only column used by this loop. Otherwise,
          ** if it is one of two or more, none of the columns can be
          ** considered to match an ORDER BY term.  */

          if( (eOp & eqOpMask)!=0 ){

            if( eOp & WO_ISNULL ){

              testcase( isOrderDistinct );
              isOrderDistinct = 0;
            }
            continue;  
          }else if( ALWAYS(eOp & WO_IN) ){
            /* ALWAYS() justification: eOp is an equality operator due to the
            ** j<pLoop->u.btree.nEq constraint above.  Any equality other
................................................................................
        }

        /* Get the column number in the table (iColumn) and sort order
        ** (revIdx) for the j-th column of the index.
        */
        if( pIndex ){
          iColumn = pIndex->aiColumn[j];
          revIdx = pIndex->aSortOrder[j];
          if( iColumn==pIndex->pTable->iPKey ) iColumn = XN_ROWID;
        }else{
          iColumn = XN_ROWID;
          revIdx = 0;
        }

        /* An unconstrained column that might be NULL means that this
................................................................................

        /* Find the ORDER BY term that corresponds to the j-th column
        ** of the index and mark that ORDER BY term off 
        */
        isMatch = 0;
        for(i=0; bOnce && i<nOrderBy; i++){
          if( MASKBIT(i) & obSat ) continue;
          pOBExpr = sqlite3ExprSkipCollate(pOrderBy->a[i].pExpr);
          testcase( wctrlFlags & WHERE_GROUPBY );
          testcase( wctrlFlags & WHERE_DISTINCTBY );
          if( (wctrlFlags & (WHERE_GROUPBY|WHERE_DISTINCTBY))==0 ) bOnce = 0;
          if( iColumn>=XN_ROWID ){
            if( pOBExpr->op!=TK_COLUMN ) continue;
            if( pOBExpr->iTable!=iCur ) continue;
            if( pOBExpr->iColumn!=iColumn ) continue;
................................................................................
              continue;
            }
          }
          if( iColumn!=XN_ROWID ){
            pColl = sqlite3ExprNNCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr);
            if( sqlite3StrICmp(pColl->zName, pIndex->azColl[j])!=0 ) continue;
          }

          pLoop->u.btree.nIdxCol = j+1;

          isMatch = 1;
          break;
        }
        if( isMatch && (wctrlFlags & WHERE_GROUPBY)==0 ){
          /* Make sure the sort order is compatible in an ORDER BY clause.
          ** Sort order is irrelevant for a GROUP BY clause. */
          if( revSet ){
            if( (rev ^ revIdx)!=pOrderBy->a[i].sortOrder ) isMatch = 0;


          }else{
            rev = revIdx ^ pOrderBy->a[i].sortOrder;
            if( rev ) *pRevMask |= MASKBIT(iLoop);
            revSet = 1;
          }







        }
        if( isMatch ){
          if( iColumn==XN_ROWID ){
            testcase( distinctColumns==0 );
            distinctColumns = 1;
          }
          obSat |= MASKBIT(i);
................................................................................
#if defined(WHERETRACE_ENABLED)
  if( sqlite3WhereTrace & 0xffff ){
    sqlite3DebugPrintf("*** Optimizer Start *** (wctrlFlags: 0x%x",wctrlFlags);
    if( wctrlFlags & WHERE_USE_LIMIT ){
      sqlite3DebugPrintf(", limit: %d", iAuxArg);
    }
    sqlite3DebugPrintf(")\n");










  }
  if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */
    sqlite3WhereClausePrint(sWLB.pWC);
  }
#endif

  if( nTabList!=1 || whereShortCut(&sWLB)==0 ){
................................................................................
      assert( pIx->pSchema==pTab->pSchema );
      assert( iIndexCur>=0 );
      if( op ){
        sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb);
        sqlite3VdbeSetP4KeyInfo(pParse, pIx);
        if( (pLoop->wsFlags & WHERE_CONSTRAINT)!=0
         && (pLoop->wsFlags & (WHERE_COLUMN_RANGE|WHERE_SKIPSCAN))==0

         && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0
         && pWInfo->eDistinct!=WHERE_DISTINCT_ORDERED
        ){
          sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */
        }
        VdbeComment((v, "%s", pIx->zName));
#ifdef SQLITE_ENABLE_COLUMN_USED_MASK
................................................................................
      int addrSeek = 0;
      Index *pIdx;
      int n;
      if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED
       && i==pWInfo->nLevel-1  /* Ticket [ef9318757b152e3] 2017-10-21 */
       && (pLoop->wsFlags & WHERE_INDEXED)!=0
       && (pIdx = pLoop->u.btree.pIndex)->hasStat1
       && (n = pLoop->u.btree.nIdxCol)>0
       && pIdx->aiRowLogEst[n]>=36
      ){
        int r1 = pParse->nMem+1;
        int j, op;
        for(j=0; j<n; j++){
          sqlite3VdbeAddOp3(v, OP_Column, pLevel->iIdxCur, j, r1+j);
        }
................................................................................
      sqlite3VdbeResolveLabel(v, pLevel->addrCont);
      sqlite3VdbeAddOp3(v, pLevel->op, pLevel->p1, pLevel->p2, pLevel->p3);
      sqlite3VdbeChangeP5(v, pLevel->p5);
      VdbeCoverage(v);
      VdbeCoverageIf(v, pLevel->op==OP_Next);
      VdbeCoverageIf(v, pLevel->op==OP_Prev);
      VdbeCoverageIf(v, pLevel->op==OP_VNext);





#ifndef SQLITE_DISABLE_SKIPAHEAD_DISTINCT
      if( addrSeek ) sqlite3VdbeJumpHere(v, addrSeek);
#endif
    }else{
      sqlite3VdbeResolveLabel(v, pLevel->addrCont);
    }
    if( pLoop->wsFlags & WHERE_IN_ABLE && pLevel->u.in.nIn>0 ){
................................................................................
** Callback function used by selectWindowRewriteEList(). If necessary,
** this function appends to the output expression-list and updates 
** expression (*ppExpr) in place.
*/
static int selectWindowRewriteExprCb(Walker *pWalker, Expr *pExpr){
  struct WindowRewrite *p = pWalker->u.pRewrite;
  Parse *pParse = pWalker->pParse;



  /* If this function is being called from within a scalar sub-select
  ** that used by the SELECT statement being processed, only process
  ** TK_COLUMN expressions that refer to it (the outer SELECT). Do
  ** not process aggregates or window functions at all, as they belong
  ** to the scalar sub-select.  */
  if( p->pSubSelect ){
................................................................................
  ExprList *pEList,               /* Rewrite expressions in this list */
  Table *pTab,
  ExprList **ppSub                /* IN/OUT: Sub-select expression-list */
){
  Walker sWalker;
  WindowRewrite sRewrite;


  memset(&sWalker, 0, sizeof(Walker));
  memset(&sRewrite, 0, sizeof(WindowRewrite));

  sRewrite.pSub = *ppSub;
  sRewrite.pWin = pWin;
  sRewrite.pSrc = pSrc;
  sRewrite.pTab = pTab;
................................................................................
    for(i=0; i<pAppend->nExpr; i++){
      Expr *pDup = sqlite3ExprDup(pParse->db, pAppend->a[i].pExpr, 0);
      if( bIntToNull && pDup && pDup->op==TK_INTEGER ){
        pDup->op = TK_NULL;
        pDup->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse);
      }
      pList = sqlite3ExprListAppend(pParse, pList, pDup);
      if( pList ) pList->a[nInit+i].sortOrder = pAppend->a[i].sortOrder;
    }
  }
  return pList;
}

/*
** If the SELECT statement passed as the second argument does not invoke
................................................................................
    p->selFlags &= ~SF_Aggregate;

    /* Create the ORDER BY clause for the sub-select. This is the concatenation
    ** of the window PARTITION and ORDER BY clauses. Then, if this makes it
    ** redundant, remove the ORDER BY from the parent SELECT.  */
    pSort = sqlite3ExprListDup(db, pMWin->pPartition, 0);
    pSort = exprListAppendList(pParse, pSort, pMWin->pOrderBy, 1);
    if( pSort && p->pOrderBy ){


      if( sqlite3ExprListCompare(pSort, p->pOrderBy, -1)==0 ){
        sqlite3ExprListDelete(db, p->pOrderBy);
        p->pOrderBy = 0;
      }

    }

    /* Assign a cursor number for the ephemeral table used to buffer rows.
    ** The OpenEphemeral instruction is coded later, after it is known how
    ** many columns the table will have.  */
    pMWin->iEphCsr = pParse->nTab++;
    pParse->nTab += 3;
................................................................................
    pSublist = exprListAppendList(pParse, pSublist, pMWin->pOrderBy, 0);

    /* Append the arguments passed to each window function to the
    ** sub-select expression list. Also allocate two registers for each
    ** window function - one for the accumulator, another for interim
    ** results.  */
    for(pWin=pMWin; pWin; pWin=pWin->pNextWin){



      pWin->iArgCol = (pSublist ? pSublist->nExpr : 0);



      pSublist = exprListAppendList(pParse, pSublist, pWin->pOwner->x.pList, 0);

      if( pWin->pFilter ){
        Expr *pFilter = sqlite3ExprDup(db, pWin->pFilter, 0);
        pSublist = sqlite3ExprListAppend(pParse, pSublist, pFilter);
      }
      pWin->regAccum = ++pParse->nMem;
      pWin->regResult = ++pParse->nMem;
      sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum);
................................................................................
    ** function accepts zero arguments, and there are no other columns
    ** selected (e.g. "SELECT row_number() OVER () FROM t1"), it is possible
    ** that pSublist is still NULL here. Add a constant expression here to 
    ** keep everything legal in this case. 
    */
    if( pSublist==0 ){
      pSublist = sqlite3ExprListAppend(pParse, 0, 
          sqlite3ExprAlloc(db, TK_INTEGER, &sqlite3IntTokens[0], 0)
      );
    }

    pSub = sqlite3SelectNew(
        pParse, pSublist, pSrc, pWhere, pGroupBy, pHaving, pSort, 0, 0
    );
    p->pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0);
    if( p->pSrc ){
      Table *pTab2;
      p->pSrc->a[0].pSelect = pSub;
      sqlite3SrcListAssignCursors(pParse, p->pSrc);
      pSub->selFlags |= SF_Expanded;
      pTab2 = sqlite3ResultSetOfSelect(pParse, pSub);
      if( pTab2==0 ){
        rc = SQLITE_NOMEM;
      }else{
        memcpy(pTab, pTab2, sizeof(Table));
        pTab->tabFlags |= TF_Ephemeral;
        p->pSrc->a[0].pTab = pTab;
        pTab = pTab2;
................................................................................
    }
    if( db->mallocFailed ) rc = SQLITE_NOMEM;
    sqlite3DbFree(db, pTab);
  }

  return rc;
}













/*
** Free the Window object passed as the second argument.
*/
SQLITE_PRIVATE void sqlite3WindowDelete(sqlite3 *db, Window *p){
  if( p ){

    sqlite3ExprDelete(db, p->pFilter);
    sqlite3ExprListDelete(db, p->pPartition);
    sqlite3ExprListDelete(db, p->pOrderBy);
    sqlite3ExprDelete(db, p->pEnd);
    sqlite3ExprDelete(db, p->pStart);
    sqlite3DbFree(db, p->zName);
    sqlite3DbFree(db, p->zBase);
................................................................................

/*
** Attach window object pWin to expression p.
*/
SQLITE_PRIVATE void sqlite3WindowAttach(Parse *pParse, Expr *p, Window *pWin){
  if( p ){
    assert( p->op==TK_FUNCTION );
    /* This routine is only called for the parser.  If pWin was not
    ** allocated due to an OOM, then the parser would fail before ever
    ** invoking this routine */
    if( ALWAYS(pWin) ){
      p->y.pWin = pWin;
      ExprSetProperty(p, EP_WinFunc);
      pWin->pOwner = p;
      if( p->flags & EP_Distinct ){
        sqlite3ErrorMsg(pParse,
           "DISTINCT is not supported for window functions");
      }

    }
  }else{
    sqlite3WindowDelete(pParse->db, pWin);
  }
}




















/*
** Return 0 if the two window objects are identical, or non-zero otherwise.
** Identical window objects can be processed in a single scan.
*/
SQLITE_PRIVATE int sqlite3WindowCompare(Parse *pParse, Window *p1, Window *p2){
  if( p1->eFrmType!=p2->eFrmType ) return 1;
  if( p1->eStart!=p2->eStart ) return 1;
  if( p1->eEnd!=p2->eEnd ) return 1;
  if( p1->eExclude!=p2->eExclude ) return 1;
  if( sqlite3ExprCompare(pParse, p1->pStart, p2->pStart, -1) ) return 1;
  if( sqlite3ExprCompare(pParse, p1->pEnd, p2->pEnd, -1) ) return 1;
  if( sqlite3ExprListCompare(p1->pPartition, p2->pPartition, -1) ) return 1;
  if( sqlite3ExprListCompare(p1->pOrderBy, p2->pOrderBy, -1) ) return 1;



  return 0;
}


/*
** This is called by code in select.c before it calls sqlite3WhereBegin()
** to begin iterating through the sub-query results. It is used to allocate
................................................................................
      */
      ExprList *pList = pWin->pOwner->x.pList;
      KeyInfo *pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pList, 0, 0);
      pWin->csrApp = pParse->nTab++;
      pWin->regApp = pParse->nMem+1;
      pParse->nMem += 3;
      if( pKeyInfo && pWin->pFunc->zName[1]=='i' ){
        assert( pKeyInfo->aSortOrder[0]==0 );
        pKeyInfo->aSortOrder[0] = 1;
      }
      sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pWin->csrApp, 2);
      sqlite3VdbeAppendP4(v, pKeyInfo, P4_KEYINFO);
      sqlite3VdbeAddOp2(v, OP_Integer, 0, pWin->regApp+1);
    }
    else if( p->zName==nth_valueName || p->zName==first_valueName ){
      /* Allocate two registers at pWin->regApp. These will be used to
................................................................................
** Return the number of arguments passed to the window-function associated
** with the object passed as the only argument to this function.
*/
static int windowArgCount(Window *pWin){
  ExprList *pList = pWin->pOwner->x.pList;
  return (pList ? pList->nExpr : 0);
}







































































































/*
** Generate VM code to invoke either xStep() (if bInverse is 0) or 
** xInverse (if bInverse is non-zero) for each window function in the 
** linked list starting at pMWin. Or, for built-in window functions
** that do not use the standard function API, generate the required
** inline VM code.
................................................................................
** Or, if csr is less than zero, then the array of registers at reg is
** already populated with all columns from the current row of the sub-query.
**
** If argument regPartSize is non-zero, then it is a register containing the
** number of rows in the current partition.
*/
static void windowAggStep(
  Parse *pParse, 
  Window *pMWin,                  /* Linked list of window functions */
  int csr,                        /* Read arguments from this cursor */
  int bInverse,                   /* True to invoke xInverse instead of xStep */
  int reg                         /* Array of registers */
){

  Vdbe *v = sqlite3GetVdbe(pParse);
  Window *pWin;
  for(pWin=pMWin; pWin; pWin=pWin->pNextWin){
    FuncDef *pFunc = pWin->pFunc;
    int regArg;
    int nArg = windowArgCount(pWin);
    int i;







    for(i=0; i<nArg; i++){
      if( i!=1 || pFunc->zName!=nth_valueName ){
        sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol+i, reg+i);
      }else{
        sqlite3VdbeAddOp3(v, OP_Column, pMWin->iEphCsr, pWin->iArgCol+i, reg+i);
      }
    }
................................................................................
      );
      assert( bInverse==0 || bInverse==1 );
      sqlite3VdbeAddOp2(v, OP_AddImm, pWin->regApp+1-bInverse, 1);
    }else if( pFunc->xSFunc!=noopStepFunc ){
      int addrIf = 0;
      if( pWin->pFilter ){
        int regTmp;
        assert( nArg==0 || nArg==pWin->pOwner->x.pList->nExpr );
        assert( nArg || pWin->pOwner->x.pList==0 );
        regTmp = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp3(v, OP_Column, csr, pWin->iArgCol+nArg,regTmp);
        addrIf = sqlite3VdbeAddOp3(v, OP_IfNot, regTmp, 0, 1);
        VdbeCoverage(v);
        sqlite3ReleaseTempReg(pParse, regTmp);
      }
















      if( pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){
        CollSeq *pColl;
        assert( nArg>0 );
        pColl = sqlite3ExprNNCollSeq(pParse, pWin->pOwner->x.pList->a[0].pExpr);
        sqlite3VdbeAddOp4(v, OP_CollSeq, 0,0,0, (const char*)pColl, P4_COLLSEQ);
      }
      sqlite3VdbeAddOp3(v, bInverse? OP_AggInverse : OP_AggStep, 
                        bInverse, regArg, pWin->regAccum);
      sqlite3VdbeAppendP4(v, pFunc, P4_FUNCDEF);
      sqlite3VdbeChangeP5(v, (u8)nArg);



      if( addrIf ) sqlite3VdbeJumpHere(v, addrIf);
    }
  }
}

typedef struct WindowCodeArg WindowCodeArg;
typedef struct WindowCsrAndReg WindowCsrAndReg;
struct WindowCsrAndReg {
  int csr;
  int reg;
};

struct WindowCodeArg {
  Parse *pParse;
  Window *pMWin;
  Vdbe *pVdbe;
  int regGosub;
  int addrGosub;
  int regArg;
  int eDelete;

  WindowCsrAndReg start;
  WindowCsrAndReg current;
  WindowCsrAndReg end;
};

/*
** Values that may be passed as the second argument to windowCodeOp().
*/
#define WINDOW_RETURN_ROW 1
#define WINDOW_AGGINVERSE 2
#define WINDOW_AGGSTEP    3

/*
** Generate VM code to read the window frames peer values from cursor csr into
** an array of registers starting at reg.
*/
static void windowReadPeerValues(
  WindowCodeArg *p,
  int csr,
  int reg
){
  Window *pMWin = p->pMWin;
  ExprList *pOrderBy = pMWin->pOrderBy;
  if( pOrderBy ){
    Vdbe *v = sqlite3GetVdbe(p->pParse);
    ExprList *pPart = pMWin->pPartition;
    int iColOff = pMWin->nBufferCol + (pPart ? pPart->nExpr : 0);
    int i;
    for(i=0; i<pOrderBy->nExpr; i++){
      sqlite3VdbeAddOp3(v, OP_Column, csr, iColOff+i, reg+i);
    }
  }
}

/*
** Generate VM code to invoke either xValue() (bFin==0) or xFinalize()
** (bFin==1) for each window function in the linked list starting at
** pMWin. Or, for built-in window-functions that do not use the standard
** API, generate the equivalent VM code.
*/
static void windowAggFinal(WindowCodeArg *p, int bFin){
................................................................................
  int regRowid = 0;               /* AggStep rowid value */
  int regPeer = 0;                /* AggStep peer values */

  int nPeer;
  int lblNext;
  int lblBrk;
  int addrNext;
  int csr = pMWin->csrApp;





  nPeer = (pMWin->pOrderBy ? pMWin->pOrderBy->nExpr : 0);

  lblNext = sqlite3VdbeMakeLabel(pParse);
  lblBrk = sqlite3VdbeMakeLabel(pParse);

  regCRowid = sqlite3GetTempReg(pParse);
  regRowid = sqlite3GetTempReg(pParse);
................................................................................
      VdbeCoverageEqNe(v);
    }else{
      sqlite3VdbeAddOp2(v, OP_Goto, 0, lblNext);
    }
    if( addrEq ) sqlite3VdbeJumpHere(v, addrEq);
  }

  windowAggStep(pParse, pMWin, csr, 0, p->regArg);

  sqlite3VdbeResolveLabel(v, lblNext);
  sqlite3VdbeAddOp2(v, OP_Next, csr, addrNext);
  VdbeCoverage(v);
  sqlite3VdbeJumpHere(v, addrNext-1);
  sqlite3VdbeJumpHere(v, addrNext+1);
  sqlite3ReleaseTempReg(pParse, regRowid);
................................................................................
  sqlite3ReleaseTempReg(pParse, regCRowid);
  if( nPeer ){
    sqlite3ReleaseTempRange(pParse, regPeer, nPeer);
    sqlite3ReleaseTempRange(pParse, regCPeer, nPeer);
  }

  windowAggFinal(p, 1);

}

/*
** Invoke the sub-routine at regGosub (generated by code in select.c) to
** return the current row of Window.iEphCsr. If all window functions are
** aggregate window functions that use the standard API, a single
** OP_Gosub instruction is all that this routine generates. Extra VM code
................................................................................
    sqlite3VdbeAddOp2(v, OP_Goto, 0, addr);
  }
}

/*
** This function is called as part of generating VM programs for RANGE
** offset PRECEDING/FOLLOWING frame boundaries. Assuming "ASC" order for
** the ORDER BY term in the window, it generates code equivalent to:

**
**   if( csr1.peerVal + regVal >= csr2.peerVal ) goto lbl;
**











** A special type of arithmetic is used such that if csr.peerVal is not
** a numeric type (real or integer), then the result of the addition is
** a copy of csr1.peerVal.
*/
static void windowCodeRangeTest(
  WindowCodeArg *p, 
  int op,                          /* OP_Ge or OP_Gt */
  int csr1, 
  int regVal, 
  int csr2,
  int lbl




){
  Parse *pParse = p->pParse;
  Vdbe *v = sqlite3GetVdbe(pParse);
  int reg1 = sqlite3GetTempReg(pParse);
  int reg2 = sqlite3GetTempReg(pParse);
  int arith = OP_Add;
  int addrGe;

  int regString = ++pParse->nMem;

  assert( op==OP_Ge || op==OP_Gt || op==OP_Le );
  assert( p->pMWin->pOrderBy && p->pMWin->pOrderBy->nExpr==1 );
  if( p->pMWin->pOrderBy->a[0].sortOrder ){
    switch( op ){
      case OP_Ge: op = OP_Le; break;
      case OP_Gt: op = OP_Lt; break;
      default: assert( op==OP_Le ); op = OP_Ge; break;
    }
    arith = OP_Subtract;
  }


  windowReadPeerValues(p, csr1, reg1);
  windowReadPeerValues(p, csr2, reg2);

  /* Check if the peer value for csr1 value is a text or blob by comparing
  ** it to the smallest possible string - ''. If it is, jump over the
  ** OP_Add or OP_Subtract operation and proceed directly to the comparison. */















  sqlite3VdbeAddOp4(v, OP_String8, 0, regString, 0, "", P4_STATIC);
  addrGe = sqlite3VdbeAddOp3(v, OP_Ge, regString, 0, reg1);
  VdbeCoverage(v);
  sqlite3VdbeAddOp3(v, arith, regVal, reg1, reg1);
  sqlite3VdbeJumpHere(v, addrGe);


















































  sqlite3VdbeAddOp3(v, op, reg2, lbl, reg1); VdbeCoverage(v);
  sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);

  assert( op==OP_Ge || op==OP_Gt || op==OP_Lt || op==OP_Le );
  testcase(op==OP_Ge); VdbeCoverageIf(v, op==OP_Ge);
  testcase(op==OP_Lt); VdbeCoverageIf(v, op==OP_Lt);
  testcase(op==OP_Le); VdbeCoverageIf(v, op==OP_Le);
  testcase(op==OP_Gt); VdbeCoverageIf(v, op==OP_Gt);

  sqlite3ReleaseTempReg(pParse, reg1);
  sqlite3ReleaseTempReg(pParse, reg2);


}

/*
** Helper function for sqlite3WindowCodeStep(). Each call to this function
** generates VM code for a single RETURN_ROW, AGGSTEP or AGGINVERSE 
** operation. Refer to the header comment for sqlite3WindowCodeStep() for
** details.
................................................................................
 int jumpOnEof                    /* Jump here if stepped cursor reaches EOF */
){
  int csr, reg;
  Parse *pParse = p->pParse;
  Window *pMWin = p->pMWin;
  int ret = 0;
  Vdbe *v = p->pVdbe;
  int addrIf = 0; 
  int addrContinue = 0;
  int addrGoto = 0;
  int bPeer = (pMWin->eFrmType!=TK_ROWS);

  int lblDone = sqlite3VdbeMakeLabel(pParse);
  int addrNextRange = 0;

  /* Special case - WINDOW_AGGINVERSE is always a no-op if the frame
  ** starts with UNBOUNDED PRECEDING. */
................................................................................
        }
      }else{
        windowCodeRangeTest(
            p, OP_Gt, p->end.csr, regCountdown, p->current.csr, lblDone
        );
      }
    }else{
      addrIf = sqlite3VdbeAddOp3(v, OP_IfPos, regCountdown, 0, 1);
      VdbeCoverage(v);
    }
  }

  if( op==WINDOW_RETURN_ROW && pMWin->regStartRowid==0 ){
    windowAggFinal(p, 0);
  }
  addrContinue = sqlite3VdbeCurrentAddr(v);



















  switch( op ){
    case WINDOW_RETURN_ROW:
      csr = p->current.csr;
      reg = p->current.reg;
      windowReturnOneRow(p);
      break;

................................................................................
    case WINDOW_AGGINVERSE:
      csr = p->start.csr;
      reg = p->start.reg;
      if( pMWin->regStartRowid ){
        assert( pMWin->regEndRowid );
        sqlite3VdbeAddOp2(v, OP_AddImm, pMWin->regStartRowid, 1);
      }else{
        windowAggStep(pParse, pMWin, csr, 1, p->regArg);
      }
      break;

    default:
      assert( op==WINDOW_AGGSTEP );
      csr = p->end.csr;
      reg = p->end.reg;
      if( pMWin->regStartRowid ){
        assert( pMWin->regEndRowid );
        sqlite3VdbeAddOp2(v, OP_AddImm, pMWin->regEndRowid, 1);
      }else{
        windowAggStep(pParse, pMWin, csr, 0, p->regArg);
      }
      break;
  }

  if( op==p->eDelete ){
    sqlite3VdbeAddOp1(v, OP_Delete, csr);
    sqlite3VdbeChangeP5(v, OPFLAG_SAVEPOSITION);
................................................................................
    sqlite3VdbeAddOp2(v, OP_Next, csr, sqlite3VdbeCurrentAddr(v)+2);
    VdbeCoverage(v);
    ret = sqlite3VdbeAddOp0(v, OP_Goto);
  }else{
    sqlite3VdbeAddOp2(v, OP_Next, csr, sqlite3VdbeCurrentAddr(v)+1+bPeer);
    VdbeCoverage(v);
    if( bPeer ){
      addrGoto = sqlite3VdbeAddOp0(v, OP_Goto);
    }
  }

  if( bPeer ){
    int nReg = (pMWin->pOrderBy ? pMWin->pOrderBy->nExpr : 0);
    int regTmp = (nReg ? sqlite3GetTempRange(pParse, nReg) : 0);
    windowReadPeerValues(p, csr, regTmp);
................................................................................
    sqlite3ReleaseTempRange(pParse, regTmp, nReg);
  }

  if( addrNextRange ){
    sqlite3VdbeAddOp2(v, OP_Goto, 0, addrNextRange);
  }
  sqlite3VdbeResolveLabel(v, lblDone);
  if( addrGoto ) sqlite3VdbeJumpHere(v, addrGoto);
  if( addrIf ) sqlite3VdbeJumpHere(v, addrIf);
  return ret;
}


/*
** Allocate and return a duplicate of the Window object indicated by the
** third argument. Set the Window.pOwner field of the new object to
................................................................................
*/
SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p){
  Window *pNew = 0;
  if( ALWAYS(p) ){
    pNew = sqlite3DbMallocZero(db, sizeof(Window));
    if( pNew ){
      pNew->zName = sqlite3DbStrDup(db, p->zName);

      pNew->pFilter = sqlite3ExprDup(db, p->pFilter, 0);
      pNew->pFunc = p->pFunc;
      pNew->pPartition = sqlite3ExprListDup(db, p->pPartition, 0);
      pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, 0);
      pNew->eFrmType = p->eFrmType;
      pNew->eEnd = p->eEnd;
      pNew->eStart = p->eStart;
      pNew->eExclude = p->eExclude;

      pNew->pStart = sqlite3ExprDup(db, p->pStart, 0);
      pNew->pEnd = sqlite3ExprDup(db, p->pEnd, 0);
      pNew->pOwner = pOwner;

    }
  }
  return pNew;
}

/*
** Return a copy of the linked list of Window objects passed as the
................................................................................
**       }
**       Insert new row into eph table.
**       if( first row of partition ){
**         Rewind(csrEnd) ; Rewind(csrStart) ; Rewind(csrCurrent)
**         regEnd = <expr2>
**         regStart = <expr1>
**       }else{
**         if( (csrEnd.key + regEnd) <= csrCurrent.key ){
**           AGGSTEP
**         }
**         while( (csrStart.key + regStart) < csrCurrent.key ){
**           AGGINVERSE
**         }
**         RETURN_ROW
**       }
................................................................................
  int csrInput = p->pSrc->a[0].iCursor;     /* Cursor of sub-select */
  int nInput = p->pSrc->a[0].pTab->nCol;    /* Number of cols returned by sub */
  int iInput;                               /* To iterate through sub cols */
  int addrNe;                     /* Address of OP_Ne */
  int addrGosubFlush = 0;         /* Address of OP_Gosub to flush: */
  int addrInteger = 0;            /* Address of OP_Integer */
  int addrEmpty;                  /* Address of OP_Rewind in flush: */
  int regStart = 0;               /* Value of <expr> PRECEDING */
  int regEnd = 0;                 /* Value of <expr> FOLLOWING */
  int regNew;                     /* Array of registers holding new input row */
  int regRecord;                  /* regNew array in record form */
  int regRowid;                   /* Rowid for regRecord in eph table */
  int regNewPeer = 0;             /* Peer values for new row (part of regNew) */
  int regPeer = 0;                /* Peer values for current row */
  int regFlushPart = 0;           /* Register for "Gosub flush_partition" */
  WindowCodeArg s;                /* Context object for sub-routines */
  int lblWhereEnd;                /* Label just before sqlite3WhereEnd() code */



  assert( pMWin->eStart==TK_PRECEDING || pMWin->eStart==TK_CURRENT 
       || pMWin->eStart==TK_FOLLOWING || pMWin->eStart==TK_UNBOUNDED 
  );
  assert( pMWin->eEnd==TK_FOLLOWING || pMWin->eEnd==TK_CURRENT 
       || pMWin->eEnd==TK_UNBOUNDED || pMWin->eEnd==TK_PRECEDING 
  );
................................................................................
  VdbeCoverageNeverNull(v);

  /* This block is run for the first row of each partition */
  s.regArg = windowInitAccum(pParse, pMWin);

  if( regStart ){
    sqlite3ExprCode(pParse, pMWin->pStart, regStart);
    windowCheckValue(pParse, regStart, 0 + (pMWin->eFrmType==TK_RANGE ? 3 : 0));
  }
  if( regEnd ){
    sqlite3ExprCode(pParse, pMWin->pEnd, regEnd);
    windowCheckValue(pParse, regEnd, 1 + (pMWin->eFrmType==TK_RANGE ? 3 : 0));
  }

  if( pMWin->eStart==pMWin->eEnd && regStart ){
    int op = ((pMWin->eStart==TK_FOLLOWING) ? OP_Ge : OP_Le);
    int addrGe = sqlite3VdbeAddOp3(v, op, regStart, 0, regEnd);
    VdbeCoverageNeverNullIf(v, op==OP_Ge); /* NeverNull because bound <expr> */
    VdbeCoverageNeverNullIf(v, op==OP_Le); /*   values previously checked */
    windowAggFinal(&s, 0);
    sqlite3VdbeAddOp2(v, OP_Rewind, s.current.csr, 1);
    VdbeCoverageNeverTaken(v);
................................................................................

  /*
  ** For a compound SELECT statement, make sure p->pPrior->pNext==p for
  ** all elements in the list.  And make sure list length does not exceed
  ** SQLITE_LIMIT_COMPOUND_SELECT.
  */
  static void parserDoubleLinkSelect(Parse *pParse, Select *p){

    if( p->pPrior ){
      Select *pNext = 0, *pLoop;
      int mxSelect, cnt = 0;
      for(pLoop=p; pLoop; pNext=pLoop, pLoop=pLoop->pPrior, cnt++){
        pLoop->pNext = pNext;
        pLoop->selFlags |= SF_Compound;
      }
................................................................................
  ** that created the expression.
  */
  static Expr *tokenExpr(Parse *pParse, int op, Token t){
    Expr *p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)+t.n+1);
    if( p ){
      /* memset(p, 0, sizeof(Expr)); */
      p->op = (u8)op;
      p->affinity = 0;
      p->flags = EP_Leaf;
      p->iAgg = -1;
      p->pLeft = p->pRight = 0;
      p->x.pList = 0;
      p->pAggInfo = 0;
      p->y.pTab = 0;
      p->op2 = 0;
................................................................................
**    YY_MAX_REDUCE      Maximum value for reduce actions
*/
#ifndef INTERFACE
# define INTERFACE 1
#endif
/************* Begin control #defines *****************************************/
#define YYCODETYPE unsigned short int
#define YYNOCODE 302
#define YYACTIONTYPE unsigned short int
#define YYWILDCARD 95
#define sqlite3ParserTOKENTYPE Token
typedef union {
  int yyinit;
  sqlite3ParserTOKENTYPE yy0;
  TriggerStep* yy11;
  IdList* yy76;
  ExprList* yy94;
  Upsert* yy95;
  int yy100;
  Expr* yy102;
  struct {int value; int mask;} yy199;

  u8 yy218;


  With* yy243;
  struct TrigEvent yy298;
  Window* yy379;
  struct FrameBound yy389;
  Select* yy391;

  SrcList* yy407;
  const char* yy528;
} YYMINORTYPE;
#ifndef YYSTACKDEPTH
#define YYSTACKDEPTH 100
#endif
#define sqlite3ParserARG_SDECL
#define sqlite3ParserARG_PDECL
#define sqlite3ParserARG_PARAM
................................................................................
#define sqlite3ParserARG_STORE
#define sqlite3ParserCTX_SDECL Parse *pParse;
#define sqlite3ParserCTX_PDECL ,Parse *pParse
#define sqlite3ParserCTX_PARAM ,pParse
#define sqlite3ParserCTX_FETCH Parse *pParse=yypParser->pParse;
#define sqlite3ParserCTX_STORE yypParser->pParse=pParse;
#define YYFALLBACK 1
#define YYNSTATE             540
#define YYNRULE              376
#define YYNTOKEN             176
#define YY_MAX_SHIFT         539
#define YY_MIN_SHIFTREDUCE   783
#define YY_MAX_SHIFTREDUCE   1158
#define YY_ERROR_ACTION      1159
#define YY_ACCEPT_ACTION     1160
#define YY_NO_ACTION         1161
#define YY_MIN_REDUCE        1162
#define YY_MAX_REDUCE        1537
/************* End control #defines *******************************************/
#define YY_NLOOKAHEAD ((int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])))

/* Define the yytestcase() macro to be a no-op if is not already defined
** otherwise.
**
** Applications can choose to define yytestcase() in the %include section
................................................................................
**  yy_shift_ofst[]    For each state, the offset into yy_action for
**                     shifting terminals.
**  yy_reduce_ofst[]   For each state, the offset into yy_action for
**                     shifting non-terminals after a reduce.
**  yy_default[]       Default action for each state.
**
*********** Begin parsing tables **********************************************/
#define YY_ACTTAB_COUNT (2142)
static const YYACTIONTYPE yy_action[] = {
 /*     0 */   112,  109,  209,  112,  109,  209, 1160,    1,    1,  539,
 /*    10 */     2, 1164,  490, 1193, 1293,  534,  289, 1196,  134,  383,
 /*    20 */  1485, 1428, 1164, 1229, 1208, 1242, 1195,  289,  491,  134,
 /*    30 */   373,  915, 1229,  443,   16,   16, 1242,   70,   70,  916,
 /*    40 */   242, 1292,  296,  119,  120,  110, 1136, 1136,  981,  984,
 /*    50 */   974,  974,  117,  117,  118,  118,  118,  118,  264,  264,
 /*    60 */   190,  264,  264,  264,  264,  112,  109,  209,  362,  264,
 /*    70 */   264,  531,  376,  497,  531, 1134,  531, 1501,  239,  206,
 /*    80 */   338,    9,  531,  242,  219, 1203,  118,  118,  118,  118,
 /*    90 */   111,  439,  112,  109,  209,  219,  116,  116,  116,  116,
 /*   100 */   115,  115,  114,  114,  114,  113,  414,  115,  115,  114,
 /*   110 */   114,  114,  113,  414,  418,   12,  383,  400, 1134,  114,
 /*   120 */   114,  114,  113,  414, 1115,  418, 1134, 1392,  116,  116,
 /*   130 */   116,  116,  115,  115,  114,  114,  114,  113,  414,  961,
 /*   140 */   119,  120,  110, 1136, 1136,  981,  984,  974,  974,  117,
 /*   150 */   117,  118,  118,  118,  118,  952,  534,  414,  941,  951,
 /*   160 */  1481,  539,    2, 1164, 1505,  534,  160,  175,  289, 1134,
 /*   170 */   134,  434,  312,  297, 1115, 1116, 1117, 1242,   70,   70,
 /*   180 */  1089,  338, 1089,  118,  118,  118,  118,   42,   42,  448,
 /*   190 */   951,  951,  953,  116,  116,  116,  116,  115,  115,  114,
 /*   200 */   114,  114,  113,  414, 1115,  311,  264,  264,   82,  441,
 /*   210 */   264,  264,  190,  383,  284,   12,  288,  525,  407,  531,
 /*   220 */    96,  159,  458,  531,  371,  116,  116,  116,  116,  115,
 /*   230 */   115,  114,  114,  114,  113,  414,  219,  119,  120,  110,
 /*   240 */  1136, 1136,  981,  984,  974,  974,  117,  117,  118,  118,
 /*   250 */   118,  118,  511, 1477, 1115, 1116, 1117,  113,  414,  534,
 /*   260 */   528,  528,  528,  121,  534, 1427,  418,  116,  116,  116,
 /*   270 */   116,  115,  115,  114,  114,  114,  113,  414, 1464,  351,
 /*   280 */   270,   42,   42,  383,  187, 1115,   70,   70,  533,  433,
 /*   290 */   116,  116,  116,  116,  115,  115,  114,  114,  114,  113,
 /*   300 */   414,  534, 1339,  405,  159,  411,  410,  119,  120,  110,
 /*   310 */  1136, 1136,  981,  984,  974,  974,  117,  117,  118,  118,
 /*   320 */   118,  118,  285,   42,   42,  349,  411,  410,  514,  479,
 /*   330 */  1458,   79, 1084,    6, 1140, 1115, 1116, 1117,  480, 1142,
 /*   340 */   501, 1115, 1084,  123,  238, 1084,  136, 1141, 1234, 1234,
 /*   350 */  1143,  383, 1143, 1115,  167,  426,   80,  447,  512, 1451,
 /*   360 */   116,  116,  116,  116,  115,  115,  114,  114,  114,  113,
 /*   370 */   414, 1143, 1466, 1143,  350,  119,  120,  110, 1136, 1136,
 /*   380 */   981,  984,  974,  974,  117,  117,  118,  118,  118,  118,
 /*   390 */   402, 1115, 1116, 1117,  500,  534,  250,  267,  336,  474,
 /*   400 */   331,  473,  236, 1115, 1116, 1117,  231, 1115,  329,  471,
 /*   410 */   468,  467,  509, 1458, 1464,  505,    6,   70,   70,  466,
 /*   420 */   181,  380,  379,  534,  971,  971,  982,  985,  116,  116,
 /*   430 */   116,  116,  115,  115,  114,  114,  114,  113,  414, 1115,
 /*   440 */   412,  412,  412,  496, 1115,   69,   69,  235,  383,  288,
 /*   450 */   525,  273,  326,  516,  337,  458, 1084, 1115, 1116, 1117,
 /*   460 */  1232, 1232,  492,  160,  508,  441, 1084, 1067, 1531, 1084,
 /*   470 */   207, 1531,  119,  120,  110, 1136, 1136,  981,  984,  974,
 /*   480 */   974,  117,  117,  118,  118,  118,  118,  881,  534, 1115,
 /*   490 */  1116, 1117,  975,  534, 1115, 1116, 1117,  534,  421,  534,
 /*   500 */   141,  534,  176,  356,  517, 1119,   32,  511,  482,  388,
 /*   510 */    70,   70,  818,  288,  525,   70,   70,  441,  499,   50,
 /*   520 */    50,   70,   70,   70,   70,  116,  116,  116,  116,  115,
 /*   530 */   115,  114,  114,  114,  113,  414,  274,  264,  264, 1115,
 /*   540 */  1065,  264,  264, 1115,  355,  383,  409,  961, 1439,  822,
 /*   550 */   531,  516,  190,  419,  531,  483, 1119,  516,  337,  516,
 /*   560 */   518, 1115,  818,  952,  382,  458,  515,  951,  481,  119,
 /*   570 */   120,  110, 1136, 1136,  981,  984,  974,  974,  117,  117,
 /*   580 */   118,  118,  118,  118, 1338,  278, 1045,  278,  275, 1115,
 /*   590 */  1116, 1117,  259, 1115, 1116, 1117,  534,    5,  951,  951,
 /*   600 */   953, 1046,  231,    3,  143,  471,  468,  467, 1391,  463,
 /*   610 */  1115, 1115, 1116, 1117, 1452,  466, 1047,  836,   70,   70,
 /*   620 */   480,  534,  116,  116,  116,  116,  115,  115,  114,  114,
 /*   630 */   114,  113,  414,   95, 1115,  287,  235,  856,  902,  420,
 /*   640 */  1115,  534,  383,   13,   13,  381,  815,  857,  472,  112,
 /*   650 */   109,  209, 1115,  337,  413,  309,  837,  394, 1436,  534,
 /*   660 */  1115, 1116, 1117,   54,   54,  291,  119,  120,  110, 1136,
 /*   670 */  1136,  981,  984,  974,  974,  117,  117,  118,  118,  118,
 /*   680 */   118,   13,   13, 1084, 1115, 1116, 1117,  901,  264,  264,
 /*   690 */  1115, 1116, 1117, 1084,  292,  399, 1084,  800,  388,  140,
 /*   700 */   295,  531, 1115, 1116, 1117,  403,  447,  532,  534,  870,
 /*   710 */   870,  534, 1240,  534,  329,  534, 1185,  389,  534,  116,
 /*   720 */   116,  116,  116,  115,  115,  114,  114,  114,  113,  414,
 /*   730 */    13,   13, 1024,   13,   13,   13,   13,   13,   13,  383,
 /*   740 */    13,   13,  424, 1100,  401,  264,  264,  277,  160,  184,
 /*   750 */  1182,  185, 1533,  369,  513,  484,  432,  487,  531,  424,
 /*   760 */   423, 1397,  941,  119,  120,  110, 1136, 1136,  981,  984,
 /*   770 */   974,  974,  117,  117,  118,  118,  118,  118, 1397, 1399,
 /*   780 */   425,  519,  392,  264,  264, 1029, 1029,  455,  264,  264,
 /*   790 */   264,  264, 1004,  304,  261, 1278,  531,  900,  288,  525,
 /*   800 */   310,  531,  493,  531, 1067, 1532,  458,  387, 1532,  311,
 /*   810 */   429,  299,  534,  107,  264,  264,  116,  116,  116,  116,
 /*   820 */   115,  115,  114,  114,  114,  113,  414,  531,  424, 1384,
 /*   830 */   507,  258,  258, 1246,   55,   55,  383, 1277,  265,  265,
 /*   840 */   962,  324,  434,  312,  531,  531,  506, 1397, 1026, 1241,
 /*   850 */   298,  531, 1026,  445,  301, 1095,  303,  534,  368, 1156,
 /*   860 */   119,  120,  110, 1136, 1136,  981,  984,  974,  974,  117,
 /*   870 */   117,  118,  118,  118,  118, 1045,  534, 1065,  534,   15,
 /*   880 */    15, 1084,  208, 1324,  453,  452,  534, 1324,  534,  449,
 /*   890 */  1046, 1084,  494,  458, 1084,  234,  233,  232,   44,   44,
 /*   900 */    56,   56,  319, 1095,  322, 1047,  534,  900,   57,   57,
 /*   910 */    58,   58,  534,  116,  116,  116,  116,  115,  115,  114,
 /*   920 */   114,  114,  113,  414,  534,  514,  522,  534,   59,   59,
 /*   930 */   302, 1157,  534,  383,   60,   60, 1237,  946,  788,  789,
 /*   940 */   790, 1459, 1456,  446,    6,    6,   61,   61, 1212,   45,
 /*   950 */    45,  534,  396,  383,   46,   46,  397,  119,  120,  110,
 /*   960 */  1136, 1136,  981,  984,  974,  974,  117,  117,  118,  118,
 /*   970 */   118,  118,  428,   48,   48,  534,  392,  119,  120,  110,
 /*   980 */  1136, 1136,  981,  984,  974,  974,  117,  117,  118,  118,
 /*   990 */   118,  118, 1324,  368, 1066,  447,  825,   49,   49,  534,
 /*  1000 */   458,  357,  534,  353,  534,  138,  534,  337, 1478,  478,
 /*  1010 */   116,  116,  116,  116,  115,  115,  114,  114,  114,  113,
 /*  1020 */   414,   62,   62,  392,   63,   63,   64,   64,   14,   14,
 /*  1030 */   116,  116,  116,  116,  115,  115,  114,  114,  114,  113,
 /*  1040 */   414,  534,  810,  317,  271,  534, 1457,  825,  534,    6,
 /*  1050 */   534, 1324,  534,  142,  534, 1442,  534,  212,  534, 1324,
 /*  1060 */   534,  398,  305,   65,   65,  534, 1157,  125,  125,  476,
 /*  1070 */    66,   66,   51,   51,   67,   67,   68,   68,   52,   52,
 /*  1080 */   147,  147,  148,  148,  534,   98,  534,   75,   75,  276,
 /*  1090 */   534,  272,  534,  810,  534,  876,  534,  527,  389,  534,
 /*  1100 */   875,  534, 1151,  202,  534,  383,   53,   53,   71,   71,
 /*  1110 */   288,  525,  126,  126,   72,   72,  127,  127,  128,  128,
 /*  1120 */   454,  124,  124,  146,  146,  383,  145,  145,  408,  119,
 /*  1130 */   120,  110, 1136, 1136,  981,  984,  974,  974,  117,  117,
 /*  1140 */   118,  118,  118,  118,  534,  900,  534,   95,  534,  119,
 /*  1150 */   120,  110, 1136, 1136,  981,  984,  974,  974,  117,  117,
 /*  1160 */   118,  118,  118,  118,  390,  161,  132,  132,  131,  131,
 /*  1170 */   129,  129,  534,  915,  534, 1455,  534, 1454,    6, 1416,
 /*  1180 */     6,  916,  116,  116,  116,  116,  115,  115,  114,  114,
 /*  1190 */   114,  113,  414, 1415,  130,  130,   74,   74,   76,   76,
 /*  1200 */   534,   30,  116,  116,  116,  116,  115,  115,  114,  114,
 /*  1210 */   114,  113,  414,  534,  263,  206,  534, 1133, 1504,   93,
 /*  1220 */   876,  845,   73,   73,  102,  875,  100,  139,   17,   38,
 /*  1230 */   208, 1062,   31,  450,  370,   43,   43,  101,   47,   47,
 /*  1240 */   827,  216,  436,  308,  943,  440,   95,  241,  241,  442,
 /*  1250 */   313,  464,  241,   95,  237,  900,  327,  383,  266,   95,
 /*  1260 */   835,  834,  193,  335,  938,  314, 1011,  435,  842,  843,
 /*  1270 */   955, 1007,  909,  334,  237,  241,  873,  383, 1023,  107,
 /*  1280 */  1023,  119,  120,  110, 1136, 1136,  981,  984,  974,  974,
 /*  1290 */   117,  117,  118,  118,  118,  118, 1022,  808, 1022, 1274,
 /*  1300 */   137,  119,  108,  110, 1136, 1136,  981,  984,  974,  974,
 /*  1310 */   117,  117,  118,  118,  118,  118,  874, 1011,  318,  107,
 /*  1320 */   321,  955,  323,  325, 1225, 1211,  197, 1210, 1209,  330,
 /*  1330 */   339, 1265,  340,  283,  116,  116,  116,  116,  115,  115,
 /*  1340 */   114,  114,  114,  113,  414, 1286, 1323, 1261, 1471, 1272,
 /*  1350 */   520,  218,  521, 1329,  116,  116,  116,  116,  115,  115,
 /*  1360 */   114,  114,  114,  113,  414, 1192, 1184, 1173, 1172, 1174,
 /*  1370 */  1494, 1488,  459,  256,  383, 1258,  342,  199,  367,  344,
 /*  1380 */   211,  195,  307,  444,   11,  346,  469,  333, 1308, 1316,
 /*  1390 */   375,  427,  203,  360,  383, 1388,  188, 1387,  189,  120,
 /*  1400 */   110, 1136, 1136,  981,  984,  974,  974,  117,  117,  118,
 /*  1410 */   118,  118,  118, 1208, 1151,  300,  348, 1491,  245, 1148,
 /*  1420 */   110, 1136, 1136,  981,  984,  974,  974,  117,  117,  118,
 /*  1430 */   118,  118,  118,  198, 1435, 1433,  524,   78,  391,  163,
 /*  1440 */    82, 1393,  438,  173,   81,  105,  526, 1313,    4,   35,
 /*  1450 */   157,  116,  116,  116,  116,  115,  115,  114,  114,  114,
 /*  1460 */   113,  414,  529,  165,   93,  430, 1305,  168,  169,  431,
 /*  1470 */   462,  116,  116,  116,  116,  115,  115,  114,  114,  114,
 /*  1480 */   113,  414,  170,  171,  221,  415,  372,  437, 1319,  177,
 /*  1490 */   374,   36,  451,  225, 1382,   87,  457,  523,  257, 1404,
 /*  1500 */   316,  105,  526,  227,    4,  182,  460,  160,  320,  228,
 /*  1510 */   377, 1175,  475,  229, 1228,  404, 1227, 1226,  529,  827,
 /*  1520 */   961, 1219,  378, 1200, 1199,  406,  103,  103, 1218,  332,
 /*  1530 */     8,  281, 1198,  104, 1503,  415,  536,  535,  486,  282,
 /*  1540 */   951,  415,  489,  495,   92,  244, 1269,  341,  243,  122,
 /*  1550 */  1270,  343,  514,  523, 1268, 1462,   10,  288,  525,  345,
 /*  1560 */  1461,  354,   99,  352,  503,   94, 1267,  347, 1251,  502,
 /*  1570 */   498,  951,  951,  953,  954,   27,  961, 1250,  194,  358,
 /*  1580 */   251,  359,  103,  103, 1181,   34,  537, 1110,  252,  104,
 /*  1590 */   254,  415,  536,  535,  255, 1368,  951, 1420,  286,  538,
 /*  1600 */  1170, 1165, 1421,  135, 1419, 1418,  149,  150,  279,  784,
 /*  1610 */   416,  196,  151,  290,  210,  200,   77,  385,  269,  386,
 /*  1620 */   133,  162,  935, 1021,  201, 1019,  153,  951,  951,  953,
 /*  1630 */   954,   27, 1480, 1104,  417,  164,  217,  268,  859,  166,
 /*  1640 */   306, 1035,  366,  366,  365,  253,  363,  220,  172,  797,
 /*  1650 */   939,  155,  105,  526,  393,    4,  395,  174,  156,   83,
 /*  1660 */  1038,   84,  213,   85,  294,  222,   86,  223, 1034,  529,
 /*  1670 */   144,   18,  293,  224,  315,  456,  241, 1027, 1145,  178,
 /*  1680 */   226,  179,   37,  799,  334,  461,  230,  465,  470,  838,
 /*  1690 */   180,   88,  415,   19,  280,  328,   20,   89,   90,  158,
 /*  1700 */   191,  477,  215, 1097,  523,  204,  192,  987,   91, 1070,
 /*  1710 */   152,   39,  485,  154, 1071,  503,   40,  488,  205,  260,
 /*  1720 */   504,  262,  105,  526,  214,    4,  908,  961,  183,  240,
 /*  1730 */   903,  107, 1086,  103,  103,   21,   22, 1088,   23,  529,
 /*  1740 */   104,   24,  415,  536,  535, 1090, 1093,  951, 1094,   25,
 /*  1750 */  1074,   33,    7,   26,  510, 1002,  247,  186,  384,   95,
 /*  1760 */   988,  986,  415,  288,  525,  990, 1044,  246, 1043,  991,
 /*  1770 */    28,   41,  530,  956,  523,  809,  106,   29,  951,  951,
 /*  1780 */   953,  954,   27,  869,  361,  503,  422,  248,  364, 1105,
 /*  1790 */   502,  249, 1161, 1496, 1495, 1161, 1161,  961, 1161, 1161,
 /*  1800 */  1161, 1161, 1161,  103,  103, 1161, 1161, 1161, 1161, 1161,
 /*  1810 */   104, 1161,  415,  536,  535, 1104,  417,  951, 1161,  268,
 /*  1820 */  1161, 1161, 1161, 1161,  366,  366,  365,  253,  363, 1161,
 /*  1830 */  1161,  797, 1161, 1161, 1161, 1161,  105,  526, 1161,    4,
 /*  1840 */  1161, 1161, 1161, 1161,  213, 1161,  294, 1161,  951,  951,
 /*  1850 */   953,  954,   27,  529,  293, 1161, 1161, 1161, 1161, 1161,
 /*  1860 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,
 /*  1870 */  1161, 1161, 1161, 1161, 1161, 1161,  415, 1161, 1161, 1161,
 /*  1880 */  1161, 1161, 1161, 1161,  215, 1161, 1161, 1161,  523, 1161,
 /*  1890 */  1161, 1161,  152, 1161, 1161,  154,  105,  526, 1161,    4,
 /*  1900 */  1161, 1161, 1161, 1161, 1161, 1161,  214, 1161, 1161, 1161,
 /*  1910 */  1161,  961, 1161,  529, 1161, 1161, 1161,  103,  103,  880,
 /*  1920 */  1161, 1161, 1161, 1161,  104, 1161,  415,  536,  535, 1161,
 /*  1930 */  1161,  951, 1161, 1161, 1161, 1161,  415, 1161, 1161, 1161,
 /*  1940 */   384, 1161, 1161, 1161, 1161,  288,  525, 1161,  523, 1161,
 /*  1950 */  1161, 1161, 1161, 1161, 1161, 1161,   97,  526, 1161,    4,
 /*  1960 */  1161, 1161,  951,  951,  953,  954,   27, 1161,  422, 1161,
 /*  1970 */  1161,  961, 1161,  529, 1161, 1161, 1161,  103,  103, 1161,
 /*  1980 */  1161, 1161, 1161, 1161,  104, 1161,  415,  536,  535, 1161,
 /*  1990 */  1161,  951,  268, 1161, 1161, 1161,  415,  366,  366,  365,
 /*  2000 */   253,  363, 1161, 1161,  797, 1161, 1161, 1161,  523, 1161,
 /*  2010 */  1161, 1161, 1161, 1161, 1161, 1161, 1161,  213, 1161,  294,
 /*  2020 */  1161, 1161,  951,  951,  953,  954,   27,  293, 1161, 1161,
 /*  2030 */  1161,  961, 1161, 1161, 1161, 1161, 1161,  103,  103, 1161,
 /*  2040 */  1161, 1161, 1161, 1161,  104, 1161,  415,  536,  535, 1161,
 /*  2050 */  1161,  951, 1161, 1161, 1161, 1161, 1161,  215, 1161, 1161,
 /*  2060 */  1161, 1161, 1161, 1161, 1161,  152, 1161, 1161,  154, 1161,
 /*  2070 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,  214,
 /*  2080 */  1161, 1161,  951,  951,  953,  954,   27, 1161, 1161, 1161,
 /*  2090 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,
 /*  2100 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,
 /*  2110 */  1161, 1161, 1161,  384, 1161, 1161, 1161, 1161,  288,  525,
 /*  2120 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,
 /*  2130 */  1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161, 1161,
 /*  2140 */  1161,  422,
};
static const YYCODETYPE yy_lookahead[] = {
 /*     0 */   260,  261,  262,  260,  261,  262,  176,  177,  178,  179,
 /*    10 */   180,  181,  184,  206,  209,  184,  186,  206,  188,   19,
 /*    20 */   179,  281,  181,  213,  214,  195,  206,  186,  195,  188,
 /*    30 */   195,   31,  222,  184,  206,  207,  195,  206,  207,   39,
 /*    40 */    24,  209,  184,   43,   44,   45,   46,   47,   48,   49,
 /*    50 */    50,   51,   52,   53,   54,   55,   56,   57,  228,  229,
 /*    60 */   184,  228,  229,  228,  229,  260,  261,  262,  192,  228,
 /*    70 */   229,  241,  196,  242,  241,   59,  241,  205,  245,  246,
 /*    80 */   184,   22,  241,   24,  254,  213,   54,   55,   56,   57,
 /*    90 */    58,  256,  260,  261,  262,  254,   96,   97,   98,   99,
 /*   100 */   100,  101,  102,  103,  104,  105,  106,  100,  101,  102,
 /*   110 */   103,  104,  105,  106,  284,  203,   19,  221,   59,  102,
 /*   120 */   103,  104,  105,  106,   59,  284,  110,  269,   96,   97,
 /*   130 */    98,   99,  100,  101,  102,  103,  104,  105,  106,   94,
 /*   140 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
 /*   150 */    53,   54,   55,   56,   57,  110,  184,  106,   73,  114,
 /*   160 */   178,  179,  180,  181,  219,  184,   81,   22,  186,  110,
 /*   170 */   188,  121,  122,  195,  109,  110,  111,  195,  206,  207,
 /*   180 */    83,  184,   85,   54,   55,   56,   57,  206,  207,  277,
 /*   190 */   145,  146,  147,   96,   97,   98,   99,  100,  101,  102,
 /*   200 */   103,  104,  105,  106,   59,  120,  228,  229,  143,  184,
 /*   210 */   228,  229,  184,   19,  242,  203,  131,  132,  221,  241,
 /*   220 */    26,  184,  184,  241,  196,   96,   97,   98,   99,  100,
 /*   230 */   101,  102,  103,  104,  105,  106,  254,   43,   44,   45,
 /*   240 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   250 */    56,   57,  184,  184,  109,  110,  111,  105,  106,  184,
 /*   260 */   200,  201,  202,   69,  184,  227,  284,   96,   97,   98,
 /*   270 */    99,  100,  101,  102,  103,  104,  105,  106,  297,  298,
 /*   280 */   255,  206,  207,   19,  272,   59,  206,  207,  184,  277,
 /*   290 */    96,   97,   98,   99,  100,  101,  102,  103,  104,  105,
 /*   300 */   106,  184,  259,   19,  184,  100,  101,   43,   44,   45,
 /*   310 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   320 */    56,   57,  242,  206,  207,  184,  100,  101,  138,  292,
 /*   330 */   293,   67,   76,  296,  108,  109,  110,  111,  295,  113,
 /*   340 */    84,   59,   86,   22,   26,   89,  156,  121,  224,  225,
 /*   350 */   145,   19,  147,   59,   72,  256,   24,  184,  290,  291,
 /*   360 */    96,   97,   98,   99,  100,  101,  102,  103,  104,  105,
 /*   370 */   106,  145,  297,  147,  299,   43,   44,   45,   46,   47,
 /*   380 */    48,   49,   50,   51,   52,   53,   54,   55,   56,   57,
 /*   390 */   106,  109,  110,  111,  138,  184,  112,  113,  114,  115,
 /*   400 */   116,  117,  118,  109,  110,  111,  112,   59,  124,  115,
 /*   410 */   116,  117,  292,  293,  297,  298,  296,  206,  207,  125,
 /*   420 */    72,  100,  101,  184,   46,   47,   48,   49,   96,   97,
 /*   430 */    98,   99,  100,  101,  102,  103,  104,  105,  106,   59,
 /*   440 */   200,  201,  202,  184,   59,  206,  207,   46,   19,  131,
 /*   450 */   132,  278,   23,  242,  184,  184,   76,  109,  110,  111,
 /*   460 */   224,  225,  251,   81,   84,  184,   86,   22,   23,   89,
 /*   470 */   184,   26,   43,   44,   45,   46,   47,   48,   49,   50,
 /*   480 */    51,   52,   53,   54,   55,   56,   57,  102,  184,  109,
 /*   490 */   110,  111,  114,  184,  109,  110,  111,  184,  227,  184,
 /*   500 */   230,  184,   22,  264,  195,   59,   22,  184,  195,  108,
 /*   510 */   206,  207,   59,  131,  132,  206,  207,  184,  138,  206,
 /*   520 */   207,  206,  207,  206,  207,   96,   97,   98,   99,  100,
 /*   530 */   101,  102,  103,  104,  105,  106,  255,  228,  229,   59,
 /*   540 */    95,  228,  229,   59,  184,   19,  242,   94,  184,   23,
 /*   550 */   241,  242,  184,  282,  241,  242,  110,  242,  184,  242,
 /*   560 */   251,   59,  109,  110,  196,  184,  251,  114,  251,   43,
 /*   570 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*   580 */    54,   55,   56,   57,  259,  217,   12,  219,  255,  109,
 /*   590 */   110,  111,  203,  109,  110,  111,  184,   22,  145,  146,
 /*   600 */   147,   27,  112,   22,  230,  115,  116,  117,  227,   19,
 /*   610 */    59,  109,  110,  111,  291,  125,   42,   35,  206,  207,
 /*   620 */   295,  184,   96,   97,   98,   99,  100,  101,  102,  103,
 /*   630 */   104,  105,  106,   26,   59,  233,   46,   63,  136,  184,
 /*   640 */    59,  184,   19,  206,  207,  243,   23,   73,   66,  260,
 /*   650 */   261,  262,   59,  184,  242,  195,   74,  220,  184,  184,
 /*   660 */   109,  110,  111,  206,  207,  184,   43,   44,   45,   46,
 /*   670 */    47,   48,   49,   50,   51,   52,   53,   54,   55,   56,
 /*   680 */    57,  206,  207,   76,  109,  110,  111,  136,  228,  229,
 /*   690 */   109,  110,  111,   86,  184,  220,   89,   21,  108,  230,
 /*   700 */   184,  241,  109,  110,  111,  123,  184,  127,  184,  129,
 /*   710 */   130,  184,  195,  184,  124,  184,  198,  199,  184,   96,
 /*   720 */    97,   98,   99,  100,  101,  102,  103,  104,  105,  106,
 /*   730 */   206,  207,   11,  206,  207,  206,  207,  206,  207,   19,
 /*   740 */   206,  207,  184,   23,  220,  228,  229,  220,   81,  220,
 /*   750 */   195,  220,  287,  288,  220,  195,   80,  195,  241,  201,
 /*   760 */   202,  184,   73,   43,   44,   45,   46,   47,   48,   49,
 /*   770 */    50,   51,   52,   53,   54,   55,   56,   57,  201,  202,
 /*   780 */   113,  195,  184,  228,  229,  120,  121,  122,  228,  229,
 /*   790 */   228,  229,  116,   16,   23,  184,  241,   26,  131,  132,
 /*   800 */   278,  241,   19,  241,   22,   23,  184,  189,   26,  120,
 /*   810 */   121,  122,  184,   26,  228,  229,   96,   97,   98,   99,
 /*   820 */   100,  101,  102,  103,  104,  105,  106,  241,  270,  153,
 /*   830 */    66,  228,  229,  229,  206,  207,   19,  184,  228,  229,
 /*   840 */    23,   16,  121,  122,  241,  241,   82,  270,   29,  227,
 /*   850 */   252,  241,   33,   19,   77,   91,   79,  184,   22,   23,
 /*   860 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
 /*   870 */    53,   54,   55,   56,   57,   12,  184,   95,  184,  206,
 /*   880 */   207,   76,  111,  184,   65,  267,  184,  184,  184,  271,
 /*   890 */    27,   86,  109,  184,   89,  120,  121,  122,  206,  207,
 /*   900 */   206,  207,   77,  139,   79,   42,  184,  136,  206,  207,
 /*   910 */   206,  207,  184,   96,   97,   98,   99,  100,  101,  102,
 /*   920 */   103,  104,  105,  106,  184,  138,   63,  184,  206,  207,
 /*   930 */   153,   95,  184,   19,  206,  207,  227,   23,    7,    8,
 /*   940 */     9,  293,  293,  109,  296,  296,  206,  207,  215,  206,
 /*   950 */   207,  184,  253,   19,  206,  207,  253,   43,   44,   45,
 /*   960 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   970 */    56,   57,  184,  206,  207,  184,  184,   43,   44,   45,
 /*   980 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
 /*   990 */    56,   57,  184,   22,   23,  184,   59,  206,  207,  184,
 /*  1000 */   184,  238,  184,  240,  184,   22,  184,  184,  157,  158,
 /*  1010 */    96,   97,   98,   99,  100,  101,  102,  103,  104,  105,
 /*  1020 */   106,  206,  207,  184,  206,  207,  206,  207,  206,  207,
 /*  1030 */    96,   97,   98,   99,  100,  101,  102,  103,  104,  105,
 /*  1040 */   106,  184,   59,  227,  252,  184,  293,  110,  184,  296,
 /*  1050 */   184,  184,  184,  230,  184,  184,  184,   15,  184,  184,
 /*  1060 */   184,  253,  184,  206,  207,  184,   95,  206,  207,  102,
 /*  1070 */   206,  207,  206,  207,  206,  207,  206,  207,  206,  207,
 /*  1080 */   206,  207,  206,  207,  184,  151,  184,  206,  207,  278,
 /*  1090 */   184,  252,  184,  110,  184,  128,  184,  198,  199,  184,
 /*  1100 */   133,  184,   60,   26,  184,   19,  206,  207,  206,  207,
 /*  1110 */   131,  132,  206,  207,  206,  207,  206,  207,  206,  207,
 /*  1120 */   253,  206,  207,  206,  207,   19,  206,  207,  253,   43,
 /*  1130 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*  1140 */    54,   55,   56,   57,  184,   26,  184,   26,  184,   43,
 /*  1150 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
 /*  1160 */    54,   55,   56,   57,  285,  286,  206,  207,  206,  207,
 /*  1170 */   206,  207,  184,   31,  184,  293,  184,  293,  296,  184,
 /*  1180 */   296,   39,   96,   97,   98,   99,  100,  101,  102,  103,
 /*  1190 */   104,  105,  106,  184,  206,  207,  206,  207,  206,  207,
 /*  1200 */   184,   22,   96,   97,   98,   99,  100,  101,  102,  103,
 /*  1210 */   104,  105,  106,  184,  245,  246,  184,   26,   23,  142,
 /*  1220 */   128,   26,  206,  207,  150,  133,  152,   22,   22,   24,
 /*  1230 */   111,   23,   53,  184,   26,  206,  207,  151,  206,  207,
 /*  1240 */   119,   24,  122,   23,   23,   23,   26,   26,   26,   23,
 /*  1250 */    23,   23,   26,   26,   26,  136,   23,   19,   22,   26,
 /*  1260 */   113,  114,   24,  114,  144,  184,   59,   61,    7,    8,
 /*  1270 */    59,   23,   23,  124,   26,   26,   23,   19,  145,   26,
 /*  1280 */   147,   43,   44,   45,   46,   47,   48,   49,   50,   51,
 /*  1290 */    52,   53,   54,   55,   56,   57,  145,   23,  147,  184,
 /*  1300 */    26,   43,   44,   45,   46,   47,   48,   49,   50,   51,
 /*  1310 */    52,   53,   54,   55,   56,   57,   23,  110,  184,   26,
 /*  1320 */   184,  110,  184,  184,  184,  215,  135,  215,  184,  184,
 /*  1330 */   184,  247,  184,  244,   96,   97,   98,   99,  100,  101,
 /*  1340 */   102,  103,  104,  105,  106,  184,  184,  184,  301,  184,
 /*  1350 */   184,  134,  225,  184,   96,   97,   98,   99,  100,  101,
 /*  1360 */   102,  103,  104,  105,  106,  184,  184,  184,  184,  184,
 /*  1370 */   134,  184,  274,  273,   19,  244,  244,  204,  182,  244,
 /*  1380 */   283,  231,  279,  279,  232,  244,  210,  209,  235,  235,
 /*  1390 */   235,  248,  218,  234,   19,  209,  238,  209,  238,   44,
 /*  1400 */    45,   46,   47,   48,   49,   50,   51,   52,   53,   54,
 /*  1410 */    55,   56,   57,  214,   60,  248,  248,  187,  134,   38,
 /*  1420 */    45,   46,   47,   48,   49,   50,   51,   52,   53,   54,
 /*  1430 */    55,   56,   57,  232,  191,  191,  266,  280,  191,  283,
 /*  1440 */   143,  269,  108,   22,  280,   19,   20,  258,   22,  257,
 /*  1450 */    43,   96,   97,   98,   99,  100,  101,  102,  103,  104,
 /*  1460 */   105,  106,   36,  223,  142,   18,  235,  226,  226,  191,
 /*  1470 */    18,   96,   97,   98,   99,  100,  101,  102,  103,  104,
 /*  1480 */   105,  106,  226,  226,  190,   59,  235,  235,  223,  223,
 /*  1490 */   258,  257,  191,  190,  235,  150,   62,   71,  191,  276,
 /*  1500 */   275,   19,   20,  190,   22,   22,  211,   81,  191,  190,
 /*  1510 */   211,  191,  108,  190,  208,   64,  208,  208,   36,  119,
 /*  1520 */    94,  216,  211,  208,  210,  106,  100,  101,  216,  208,
 /*  1530 */    48,  268,  208,  107,  208,  109,  110,  111,  211,  268,
 /*  1540 */   114,   59,  211,  137,  108,   88,  250,  249,  191,  141,
 /*  1550 */   250,  249,  138,   71,  250,  300,   22,  131,  132,  249,
 /*  1560 */   300,  191,  150,  238,   82,  140,  250,  249,  239,   87,
 /*  1570 */   139,  145,  146,  147,  148,  149,   94,  239,  237,  236,
 /*  1580 */    25,  235,  100,  101,  194,   26,  193,   13,  185,  107,
 /*  1590 */   185,  109,  110,  111,    6,  263,  114,  203,  265,  183,
 /*  1600 */   183,  183,  203,  212,  203,  203,  197,  197,  212,    4,
 /*  1610 */     3,   22,  197,  155,   15,  204,  203,  289,   93,  289,
 /*  1620 */    16,  286,  132,   23,  204,   23,  123,  145,  146,  147,
 /*  1630 */   148,  149,    0,    1,    2,  143,   24,    5,   20,  135,
 /*  1640 */    16,    1,   10,   11,   12,   13,   14,  137,  135,   17,
 /*  1650 */   144,  123,   19,   20,   61,   22,   37,  143,  123,   53,
 /*  1660 */   109,   53,   30,   53,   32,   34,   53,  134,    1,   36,
 /*  1670 */     5,   22,   40,  108,  153,   41,   26,   68,   75,   68,
 /*  1680 */   134,  108,   24,   20,  124,   19,  118,   67,   67,   28,
 /*  1690 */    22,   22,   59,   22,   67,   23,   22,   22,  142,   37,
 /*  1700 */    23,   22,   70,   23,   71,  157,   23,   23,   26,   23,
 /*  1710 */    78,   22,   24,   81,   23,   82,   22,   24,  134,   23,
 /*  1720 */    87,   23,   19,   20,   92,   22,  109,   94,   22,   34,
 /*  1730 */   136,   26,   85,  100,  101,   34,   34,   83,   34,   36,
 /*  1740 */   107,   34,  109,  110,  111,   75,   90,  114,   75,   34,
 /*  1750 */    23,   22,   44,   34,   24,   23,   22,   26,  126,   26,
 /*  1760 */    23,   23,   59,  131,  132,   23,   23,   26,   23,   11,
 /*  1770 */    22,   22,   26,   23,   71,   23,   22,   22,  145,  146,
 /*  1780 */   147,  148,  149,  128,   23,   82,  154,  134,   15,    1,
 /*  1790 */    87,  134,  302,  134,  134,  302,  302,   94,  302,  302,
 /*  1800 */   302,  302,  302,  100,  101,  302,  302,  302,  302,  302,
 /*  1810 */   107,  302,  109,  110,  111,    1,    2,  114,  302,    5,
 /*  1820 */   302,  302,  302,  302,   10,   11,   12,   13,   14,  302,
 /*  1830 */   302,   17,  302,  302,  302,  302,   19,   20,  302,   22,
 /*  1840 */   302,  302,  302,  302,   30,  302,   32,  302,  145,  146,
 /*  1850 */   147,  148,  149,   36,   40,  302,  302,  302,  302,  302,
 /*  1860 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  1870 */   302,  302,  302,  302,  302,  302,   59,  302,  302,  302,
 /*  1880 */   302,  302,  302,  302,   70,  302,  302,  302,   71,  302,
 /*  1890 */   302,  302,   78,  302,  302,   81,   19,   20,  302,   22,
 /*  1900 */   302,  302,  302,  302,  302,  302,   92,  302,  302,  302,
 /*  1910 */   302,   94,  302,   36,  302,  302,  302,  100,  101,  102,
 /*  1920 */   302,  302,  302,  302,  107,  302,  109,  110,  111,  302,
 /*  1930 */   302,  114,  302,  302,  302,  302,   59,  302,  302,  302,
 /*  1940 */   126,  302,  302,  302,  302,  131,  132,  302,   71,  302,
 /*  1950 */   302,  302,  302,  302,  302,  302,   19,   20,  302,   22,
 /*  1960 */   302,  302,  145,  146,  147,  148,  149,  302,  154,  302,
 /*  1970 */   302,   94,  302,   36,  302,  302,  302,  100,  101,  302,
 /*  1980 */   302,  302,  302,  302,  107,  302,  109,  110,  111,  302,
 /*  1990 */   302,  114,    5,  302,  302,  302,   59,   10,   11,   12,
 /*  2000 */    13,   14,  302,  302,   17,  302,  302,  302,   71,  302,
 /*  2010 */   302,  302,  302,  302,  302,  302,  302,   30,  302,   32,
 /*  2020 */   302,  302,  145,  146,  147,  148,  149,   40,  302,  302,
 /*  2030 */   302,   94,  302,  302,  302,  302,  302,  100,  101,  302,
 /*  2040 */   302,  302,  302,  302,  107,  302,  109,  110,  111,  302,
 /*  2050 */   302,  114,  302,  302,  302,  302,  302,   70,  302,  302,
 /*  2060 */   302,  302,  302,  302,  302,   78,  302,  302,   81,  302,
 /*  2070 */   302,  302,  302,  302,  302,  302,  302,  302,  302,   92,
 /*  2080 */   302,  302,  145,  146,  147,  148,  149,  302,  302,  302,
 /*  2090 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2100 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2110 */   302,  302,  302,  126,  302,  302,  302,  302,  131,  132,
 /*  2120 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2130 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2140 */   302,  154,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2150 */   302,  302,  302,  302,  302,  302,  302,  302,  302,  302,
 /*  2160 */   302,  302,  302,  302,  302,  302,  302,  302,  302,
};
#define YY_SHIFT_COUNT    (539)
#define YY_SHIFT_MIN      (0)
#define YY_SHIFT_MAX      (1987)
static const unsigned short int yy_shift_ofst[] = {
 /*     0 */  1814, 1632, 1987, 1426, 1426,  382, 1482, 1633, 1703, 1877,
 /*    10 */  1877, 1877,   85,    0,    0,  264, 1106, 1877, 1877, 1877,
 /*    20 */  1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877,
 /*    30 */   226,  226,  380,  380,  294,  667,  382,  382,  382,  382,
 /*    40 */   382,  382,   97,  194,  332,  429,  526,  623,  720,  817,
 /*    50 */   914,  934, 1086, 1238, 1106, 1106, 1106, 1106, 1106, 1106,
 /*    60 */  1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106, 1106,
 /*    70 */  1106, 1106, 1258, 1106, 1355, 1375, 1375, 1817, 1877, 1877,
 /*    80 */  1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877,
 /*    90 */  1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877,
 /*   100 */  1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877,
 /*   110 */  1937, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877, 1877,
 /*   120 */  1877, 1877, 1877, 1877,   32,  129,  129,  129,  129,  129,
 /*   130 */   171,    7,   17,  593,  676,  590,  593,  205,  205,  593,
 /*   140 */   318,  318,  318,  318,   50,  152,   51, 2142, 2142,  284,
 /*   150 */   284,  284,   65,  145,  282,  145,  145,  574,  574,  256,
 /*   160 */   348,  445,  782,  593,  593,  593,  593,  593,  593,  593,
 /*   170 */   593,  593,  593,  593,  593,  593,  593,  593,  593,  593,
 /*   180 */   593,  593,  593,  593,  607,  607,  593,  721,  805,  805,
 /*   190 */   446,  851,  851,  446,  190,  979, 2142, 2142, 2142,  453,
 /*   200 */    45,   45,  480,  490,  484,  385,  575,  502,  551,  581,
 /*   210 */   593,  593,  593,  593,  593,  593,  593,  593,  593,  689,
 /*   220 */   593,  593,  593,  593,  593,  593,  593,  593,  593,  593,
 /*   230 */   593,  593,  582,  582,  582,  593,  593,  593,  593,  771,
 /*   240 */   593,  593,  593,   59,  764,  593,  593,  863,  593,  593,
 /*   250 */   593,  593,  593,  593,  593,  593,  665,  819,  580,   16,
 /*   260 */    16,   16,   16, 1119,  580,  580,  967,  321,  931, 1042,
 /*   270 */  1077,  783,  783,  834, 1077, 1077,  834, 1121, 1195,  401,
 /*   280 */  1142, 1142, 1142,  783,  787,  787, 1074, 1191, 1092, 1205,
 /*   290 */  1354, 1284, 1284, 1381, 1381, 1284, 1297, 1334, 1421, 1407,
 /*   300 */  1322, 1447, 1447, 1447, 1447, 1284, 1452, 1322, 1322, 1334,
 /*   310 */  1421, 1407, 1407, 1322, 1284, 1452, 1345, 1434, 1284, 1452,
 /*   320 */  1483, 1284, 1452, 1284, 1452, 1483, 1404, 1404, 1404, 1451,
 /*   330 */  1483, 1404, 1400, 1404, 1451, 1404, 1404, 1483, 1419, 1419,
 /*   340 */  1483, 1406, 1436, 1406, 1436, 1406, 1436, 1406, 1436, 1284,
 /*   350 */  1457, 1457, 1408, 1414, 1534, 1284, 1412, 1408, 1425, 1431,
 /*   360 */  1322, 1555, 1559, 1574, 1574, 1588, 1588, 1588, 2142, 2142,
 /*   370 */  2142, 2142, 2142, 2142, 2142, 2142, 2142, 2142, 2142, 2142,
 /*   380 */  2142, 2142, 2142,  378,  777,  836,  971,  825,  775,  983,
 /*   390 */  1208, 1179, 1217, 1120, 1220, 1206, 1221, 1222, 1226, 1227,
 /*   400 */  1228, 1233,  937, 1147, 1261, 1149, 1207, 1248, 1249, 1253,
 /*   410 */  1133, 1151, 1274, 1293, 1211, 1236, 1605, 1607, 1589, 1458,
 /*   420 */  1599, 1525, 1604, 1600, 1602, 1490, 1492, 1503, 1612, 1504,
 /*   430 */  1618, 1510, 1624, 1640, 1513, 1506, 1528, 1593, 1619, 1514,
 /*   440 */  1606, 1608, 1610, 1613, 1535, 1551, 1631, 1533, 1667, 1665,
 /*   450 */  1649, 1565, 1521, 1609, 1650, 1611, 1603, 1634, 1546, 1573,
 /*   460 */  1658, 1663, 1666, 1560, 1568, 1668, 1620, 1669, 1671, 1672,
 /*   470 */  1674, 1621, 1661, 1675, 1627, 1662, 1677, 1556, 1679, 1680,
 /*   480 */  1548, 1683, 1684, 1682, 1686, 1689, 1688, 1691, 1694, 1693,
 /*   490 */  1584, 1696, 1698, 1617, 1695, 1706, 1594, 1705, 1701, 1702,
 /*   500 */  1704, 1707, 1647, 1670, 1654, 1708, 1673, 1656, 1715, 1727,
 /*   510 */  1729, 1730, 1731, 1733, 1719, 1732, 1705, 1737, 1738, 1742,
 /*   520 */  1743, 1741, 1745, 1734, 1758, 1748, 1749, 1750, 1752, 1754,
 /*   530 */  1755, 1746, 1655, 1653, 1657, 1659, 1660, 1761, 1773, 1788,
};
#define YY_REDUCE_COUNT (382)
#define YY_REDUCE_MIN   (-260)
#define YY_REDUCE_MAX   (1420)
static const short yy_reduce_ofst[] = {
 /*     0 */  -170,  -18, -159,  309,  313, -167,  -19,   75,  117,  211,
 /*    10 */   315,  317, -165, -195, -168, -260,  389,  437,  475,  524,
 /*    20 */   527, -169,  529,  531,  -28,   80,  534,  239,  304,  412,
 /*    30 */   558,  577,   37,  120,  368,  -22,  460,  517,  555,  560,
 /*    40 */   562,  586, -257, -257, -257, -257, -257, -257, -257, -257,
 /*    50 */  -257, -257, -257, -257, -257, -257, -257, -257, -257, -257,
 /*    60 */  -257, -257, -257, -257, -257, -257, -257, -257, -257, -257,
 /*    70 */  -257, -257, -257, -257, -257, -257, -257, -172,  457,  628,
 /*    80 */   673,  692,  694,  702,  704,  722,  728,  740,  743,  748,
 /*    90 */   767,  791,  815,  818,  820,  822,  857,  861,  864,  866,
 /*   100 */   868,  870,  872,  874,  876,  881,  900,  902,  906,  908,
 /*   110 */   910,  912,  915,  917,  920,  960,  962,  964,  988,  990,
 /*   120 */   992, 1016, 1029, 1032, -257, -257, -257, -257, -257, -257,
 /*   130 */  -257, -257, -257,  271,  618, -190,   68,   60,  240, -124,
 /*   140 */   603,  610,  603,  610,   12, -257, -257, -257, -257, -128,
 /*   150 */  -128, -128, -142,   25,  270,  281,  333,  124,  236,  648,
 /*   160 */   374,  465,  465,   28,  598,  792,  839,  469,   38,  381,
 /*   170 */   622,  709,  173,  699,  522,  703,  808,  811,  867,  816,
 /*   180 */  -104,  823,   -3,  875,  649,  753,  323,  -88,  882,  884,
 /*   190 */   518,   43,  325,  899,  763,  604,  879,  969,  402, -193,
 /*   200 */  -189, -180, -151,  -55,   69,  104,  141,  259,  286,  360,
 /*   210 */   364,  455,  474,  481,  510,  516,  611,  653,  788,   99,
 /*   220 */   871,  878,  995, 1009, 1049, 1081, 1115, 1134, 1136, 1138,
 /*   230 */  1139, 1140,  733, 1110, 1112, 1144, 1145, 1146, 1148, 1084,
 /*   240 */  1161, 1162, 1163, 1089, 1047, 1165, 1166, 1127, 1169,  104,
 /*   250 */  1181, 1182, 1183, 1184, 1185, 1187, 1098, 1100, 1150, 1131,
 /*   260 */  1132, 1135, 1141, 1084, 1150, 1150, 1152, 1173, 1196, 1097,
 /*   270 */  1153, 1143, 1167, 1103, 1154, 1155, 1104, 1176, 1174, 1199,
 /*   280 */  1178, 1186, 1188, 1168, 1158, 1160, 1170, 1159, 1201, 1230,
 /*   290 */  1156, 1243, 1244, 1157, 1164, 1247, 1172, 1189, 1192, 1240,
 /*   300 */  1231, 1241, 1242, 1256, 1257, 1278, 1294, 1251, 1252, 1232,
 /*   310 */  1234, 1265, 1266, 1259, 1301, 1303, 1223, 1225, 1307, 1313,
 /*   320 */  1295, 1317, 1319, 1320, 1323, 1299, 1306, 1308, 1309, 1305,
 /*   330 */  1311, 1315, 1314, 1321, 1312, 1324, 1326, 1327, 1263, 1271,
 /*   340 */  1331, 1296, 1298, 1300, 1302, 1304, 1310, 1316, 1318, 1357,
 /*   350 */  1255, 1260, 1329, 1325, 1332, 1370, 1333, 1338, 1341, 1343,
 /*   360 */  1346, 1390, 1393, 1403, 1405, 1416, 1417, 1418, 1328, 1330,
 /*   370 */  1335, 1409, 1394, 1399, 1401, 1402, 1410, 1391, 1396, 1411,
 /*   380 */  1420, 1413, 1415,
};
static const YYACTIONTYPE yy_default[] = {
 /*     0 */  1537, 1537, 1537, 1377, 1159, 1266, 1159, 1159, 1159, 1377,
 /*    10 */  1377, 1377, 1159, 1296, 1296, 1430, 1190, 1159, 1159, 1159,
 /*    20 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1376, 1159, 1159,
 /*    30 */  1159, 1159, 1460, 1460, 1159, 1159, 1159, 1159, 1159, 1159,
 /*    40 */  1159, 1159, 1159, 1302, 1159, 1159, 1159, 1159, 1159, 1378,
 /*    50 */  1379, 1159, 1159, 1159, 1429, 1431, 1394, 1312, 1311, 1310,
 /*    60 */  1309, 1412, 1283, 1307, 1300, 1304, 1372, 1373, 1371, 1375,
 /*    70 */  1379, 1378, 1159, 1303, 1343, 1357, 1342, 1159, 1159, 1159,
 /*    80 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*    90 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   100 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   110 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   120 */  1159, 1159, 1159, 1159, 1351, 1356, 1362, 1355, 1352, 1345,
 /*   130 */  1344, 1346, 1347, 1159, 1180, 1230, 1159, 1159, 1159, 1159,
 /*   140 */  1448, 1447, 1159, 1159, 1190, 1348, 1349, 1359, 1358, 1437,
 /*   150 */  1493, 1492, 1395, 1159, 1159, 1159, 1159, 1159, 1159, 1460,
 /*   160 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   170 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   180 */  1159, 1159, 1159, 1159, 1460, 1460, 1159, 1190, 1460, 1460,
 /*   190 */  1186, 1337, 1336, 1186, 1290, 1159, 1443, 1266, 1257, 1159,
 /*   200 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   210 */  1159, 1159, 1159, 1434, 1432, 1159, 1159, 1159, 1159, 1159,
 /*   220 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   230 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   240 */  1159, 1159, 1159, 1262, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   250 */  1159, 1159, 1159, 1159, 1159, 1487, 1159, 1407, 1244, 1262,
 /*   260 */  1262, 1262, 1262, 1264, 1245, 1243, 1256, 1191, 1166, 1529,
 /*   270 */  1306, 1285, 1285, 1526, 1306, 1306, 1526, 1205, 1507, 1202,
 /*   280 */  1296, 1296, 1296, 1285, 1290, 1290, 1374, 1263, 1256, 1159,
 /*   290 */  1529, 1271, 1271, 1528, 1528, 1271, 1395, 1315, 1321, 1233,
 /*   300 */  1306, 1239, 1239, 1239, 1239, 1271, 1177, 1306, 1306, 1315,
 /*   310 */  1321, 1233, 1233, 1306, 1271, 1177, 1411, 1523, 1271, 1177,
 /*   320 */  1385, 1271, 1177, 1271, 1177, 1385, 1231, 1231, 1231, 1220,
 /*   330 */  1385, 1231, 1205, 1231, 1220, 1231, 1231, 1385, 1389, 1389,
 /*   340 */  1385, 1289, 1284, 1289, 1284, 1289, 1284, 1289, 1284, 1271,
 /*   350 */  1470, 1470, 1301, 1290, 1380, 1271, 1159, 1301, 1299, 1297,
 /*   360 */  1306, 1183, 1223, 1490, 1490, 1486, 1486, 1486, 1534, 1534,
 /*   370 */  1443, 1502, 1190, 1190, 1190, 1190, 1502, 1207, 1207, 1191,
 /*   380 */  1191, 1190, 1502, 1159, 1159, 1159, 1159, 1159, 1159, 1497,
 /*   390 */  1159, 1396, 1275, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   400 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   410 */  1159, 1159, 1159, 1159, 1159, 1326, 1159, 1162, 1440, 1159,
 /*   420 */  1159, 1438, 1159, 1159, 1159, 1159, 1159, 1159, 1276, 1159,
 /*   430 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   440 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1525, 1159, 1159,
 /*   450 */  1159, 1159, 1159, 1159, 1410, 1409, 1159, 1159, 1273, 1159,
 /*   460 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   470 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   480 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   490 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1298, 1159, 1159,
 /*   500 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   510 */  1159, 1159, 1475, 1291, 1159, 1159, 1516, 1159, 1159, 1159,
 /*   520 */  1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159, 1159,
 /*   530 */  1159, 1511, 1247, 1328, 1159, 1327, 1331, 1159, 1171, 1159,
};
/********** End of lemon-generated parsing tables *****************************/

/* The next table maps tokens (terminal symbols) into fallback tokens.  
** If a construct like the following:
** 
**      %fallback ID X Y Z.
................................................................................
   59,  /*        ROW => ID */
   59,  /*       ROWS => ID */
   59,  /*    TRIGGER => ID */
   59,  /*     VACUUM => ID */
   59,  /*       VIEW => ID */
   59,  /*    VIRTUAL => ID */
   59,  /*       WITH => ID */



   59,  /*    CURRENT => ID */
   59,  /*  FOLLOWING => ID */
   59,  /*  PARTITION => ID */
   59,  /*  PRECEDING => ID */
   59,  /*      RANGE => ID */
   59,  /*  UNBOUNDED => ID */
   59,  /*    EXCLUDE => ID */
   59,  /*     GROUPS => ID */
   59,  /*     OTHERS => ID */
   59,  /*       TIES => ID */
   59,  /*    REINDEX => ID */
   59,  /*     RENAME => ID */
   59,  /*   CTIME_KW => ID */

















































































};
#endif /* YYFALLBACK */

/* The following structure represents a single element of the
** parser's stack.  Information stored includes:
**
**   +  The state number for the parser at this level of the stack.
................................................................................
  /*   75 */ "ROW",
  /*   76 */ "ROWS",
  /*   77 */ "TRIGGER",
  /*   78 */ "VACUUM",
  /*   79 */ "VIEW",
  /*   80 */ "VIRTUAL",
  /*   81 */ "WITH",
  /*   82 */ "CURRENT",
  /*   83 */ "FOLLOWING",
  /*   84 */ "PARTITION",
  /*   85 */ "PRECEDING",
  /*   86 */ "RANGE",
  /*   87 */ "UNBOUNDED",
  /*   88 */ "EXCLUDE",
  /*   89 */ "GROUPS",
  /*   90 */ "OTHERS",
  /*   91 */ "TIES",
  /*   92 */ "REINDEX",
  /*   93 */ "RENAME",
  /*   94 */ "CTIME_KW",
  /*   95 */ "ANY",
  /*   96 */ "BITAND",
  /*   97 */ "BITOR",
  /*   98 */ "LSHIFT",
  /*   99 */ "RSHIFT",
  /*  100 */ "PLUS",
  /*  101 */ "MINUS",
  /*  102 */ "STAR",
  /*  103 */ "SLASH",
  /*  104 */ "REM",
  /*  105 */ "CONCAT",
  /*  106 */ "COLLATE",
  /*  107 */ "BITNOT",
  /*  108 */ "ON",
  /*  109 */ "INDEXED",
  /*  110 */ "STRING",
  /*  111 */ "JOIN_KW",
  /*  112 */ "CONSTRAINT",
  /*  113 */ "DEFAULT",
  /*  114 */ "NULL",
  /*  115 */ "PRIMARY",
  /*  116 */ "UNIQUE",
  /*  117 */ "CHECK",
  /*  118 */ "REFERENCES",
  /*  119 */ "AUTOINCR",
  /*  120 */ "INSERT",
  /*  121 */ "DELETE",
  /*  122 */ "UPDATE",
  /*  123 */ "SET",
  /*  124 */ "DEFERRABLE",
  /*  125 */ "FOREIGN",
  /*  126 */ "DROP",
  /*  127 */ "UNION",
  /*  128 */ "ALL",
  /*  129 */ "EXCEPT",
  /*  130 */ "INTERSECT",
  /*  131 */ "SELECT",
  /*  132 */ "VALUES",
  /*  133 */ "DISTINCT",
  /*  134 */ "DOT",
  /*  135 */ "FROM",
  /*  136 */ "JOIN",
  /*  137 */ "USING",
  /*  138 */ "ORDER",
  /*  139 */ "GROUP",
  /*  140 */ "HAVING",
  /*  141 */ "LIMIT",
  /*  142 */ "WHERE",
  /*  143 */ "INTO",
  /*  144 */ "NOTHING",
  /*  145 */ "FLOAT",
  /*  146 */ "BLOB",
  /*  147 */ "INTEGER",
  /*  148 */ "VARIABLE",
  /*  149 */ "CASE",
  /*  150 */ "WHEN",
  /*  151 */ "THEN",
  /*  152 */ "ELSE",
  /*  153 */ "INDEX",
  /*  154 */ "ALTER",
  /*  155 */ "ADD",
  /*  156 */ "WINDOW",
  /*  157 */ "OVER",
  /*  158 */ "FILTER",
  /*  159 */ "TRUEFALSE",
  /*  160 */ "ISNOT",
  /*  161 */ "FUNCTION",
  /*  162 */ "COLUMN",
  /*  163 */ "AGG_FUNCTION",
  /*  164 */ "AGG_COLUMN",
  /*  165 */ "UMINUS",
  /*  166 */ "UPLUS",
  /*  167 */ "TRUTH",
  /*  168 */ "REGISTER",
  /*  169 */ "VECTOR",
  /*  170 */ "SELECT_COLUMN",
  /*  171 */ "IF_NULL_ROW",
  /*  172 */ "ASTERISK",
  /*  173 */ "SPAN",
  /*  174 */ "SPACE",
  /*  175 */ "ILLEGAL",
  /*  176 */ "input",
  /*  177 */ "cmdlist",
  /*  178 */ "ecmd",
  /*  179 */ "cmdx",
  /*  180 */ "explain",
  /*  181 */ "cmd",
  /*  182 */ "transtype",
  /*  183 */ "trans_opt",
  /*  184 */ "nm",
  /*  185 */ "savepoint_opt",
  /*  186 */ "create_table",
  /*  187 */ "create_table_args",
  /*  188 */ "createkw",
  /*  189 */ "temp",
  /*  190 */ "ifnotexists",
  /*  191 */ "dbnm",
  /*  192 */ "columnlist",
  /*  193 */ "conslist_opt",
  /*  194 */ "table_options",
  /*  195 */ "select",
  /*  196 */ "columnname",
  /*  197 */ "carglist",
  /*  198 */ "typetoken",
  /*  199 */ "typename",
  /*  200 */ "signed",
  /*  201 */ "plus_num",
  /*  202 */ "minus_num",
  /*  203 */ "scanpt",
  /*  204 */ "scantok",
  /*  205 */ "ccons",
  /*  206 */ "term",
  /*  207 */ "expr",
  /*  208 */ "onconf",
  /*  209 */ "sortorder",
  /*  210 */ "autoinc",
  /*  211 */ "eidlist_opt",
  /*  212 */ "refargs",
  /*  213 */ "defer_subclause",
  /*  214 */ "refarg",
  /*  215 */ "refact",
  /*  216 */ "init_deferred_pred_opt",
  /*  217 */ "conslist",
  /*  218 */ "tconscomma",
  /*  219 */ "tcons",
  /*  220 */ "sortlist",
  /*  221 */ "eidlist",
  /*  222 */ "defer_subclause_opt",
  /*  223 */ "orconf",
  /*  224 */ "resolvetype",
  /*  225 */ "raisetype",
  /*  226 */ "ifexists",
  /*  227 */ "fullname",
  /*  228 */ "selectnowith",
  /*  229 */ "oneselect",
  /*  230 */ "wqlist",
  /*  231 */ "multiselect_op",
  /*  232 */ "distinct",
  /*  233 */ "selcollist",
  /*  234 */ "from",
  /*  235 */ "where_opt",
  /*  236 */ "groupby_opt",
  /*  237 */ "having_opt",
  /*  238 */ "orderby_opt",
  /*  239 */ "limit_opt",
  /*  240 */ "window_clause",
  /*  241 */ "values",
  /*  242 */ "nexprlist",
  /*  243 */ "sclp",
  /*  244 */ "as",
  /*  245 */ "seltablist",
  /*  246 */ "stl_prefix",
  /*  247 */ "joinop",
  /*  248 */ "indexed_opt",
  /*  249 */ "on_opt",
  /*  250 */ "using_opt",
  /*  251 */ "exprlist",
  /*  252 */ "xfullname",
  /*  253 */ "idlist",
  /*  254 */ "with",
  /*  255 */ "setlist",
  /*  256 */ "insert_cmd",
  /*  257 */ "idlist_opt",
  /*  258 */ "upsert",
  /*  259 */ "over_clause",
  /*  260 */ "likeop",
  /*  261 */ "between_op",
  /*  262 */ "in_op",
  /*  263 */ "paren_exprlist",
  /*  264 */ "case_operand",
  /*  265 */ "case_exprlist",
  /*  266 */ "case_else",
  /*  267 */ "uniqueflag",
  /*  268 */ "collate",
  /*  269 */ "vinto",
  /*  270 */ "nmnum",
  /*  271 */ "trigger_decl",
  /*  272 */ "trigger_cmd_list",
  /*  273 */ "trigger_time",
  /*  274 */ "trigger_event",
  /*  275 */ "foreach_clause",
  /*  276 */ "when_clause",
  /*  277 */ "trigger_cmd",
  /*  278 */ "trnm",
  /*  279 */ "tridxby",
  /*  280 */ "database_kw_opt",
  /*  281 */ "key_opt",
  /*  282 */ "add_column_fullname",
  /*  283 */ "kwcolumn_opt",
  /*  284 */ "create_vtab",
  /*  285 */ "vtabarglist",
  /*  286 */ "vtabarg",
  /*  287 */ "vtabargtoken",
  /*  288 */ "lp",
  /*  289 */ "anylist",
  /*  290 */ "windowdefn_list",
  /*  291 */ "windowdefn",
  /*  292 */ "window",
  /*  293 */ "frame_opt",
  /*  294 */ "part_opt",
  /*  295 */ "filter_opt",
  /*  296 */ "range_or_rows",
  /*  297 */ "frame_bound",





  /*  298 */ "frame_bound_s",
  /*  299 */ "frame_bound_e",
  /*  300 */ "frame_exclude_opt",
  /*  301 */ "frame_exclude",
};
#endif /* defined(YYCOVERAGE) || !defined(NDEBUG) */

#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const yyRuleName[] = {
................................................................................
 /* 123 */ "indexed_opt ::=",
 /* 124 */ "indexed_opt ::= INDEXED BY nm",
 /* 125 */ "indexed_opt ::= NOT INDEXED",
 /* 126 */ "using_opt ::= USING LP idlist RP",
 /* 127 */ "using_opt ::=",
 /* 128 */ "orderby_opt ::=",
 /* 129 */ "orderby_opt ::= ORDER BY sortlist",
 /* 130 */ "sortlist ::= sortlist COMMA expr sortorder",
 /* 131 */ "sortlist ::= expr sortorder",
 /* 132 */ "sortorder ::= ASC",
 /* 133 */ "sortorder ::= DESC",
 /* 134 */ "sortorder ::=",



 /* 135 */ "groupby_opt ::=",
 /* 136 */ "groupby_opt ::= GROUP BY nexprlist",
 /* 137 */ "having_opt ::=",
 /* 138 */ "having_opt ::= HAVING expr",
 /* 139 */ "limit_opt ::=",
 /* 140 */ "limit_opt ::= LIMIT expr",
 /* 141 */ "limit_opt ::= LIMIT expr OFFSET expr",
 /* 142 */ "limit_opt ::= LIMIT expr COMMA expr",
 /* 143 */ "cmd ::= with DELETE FROM xfullname indexed_opt where_opt",
 /* 144 */ "where_opt ::=",
 /* 145 */ "where_opt ::= WHERE expr",
 /* 146 */ "cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt",
 /* 147 */ "setlist ::= setlist COMMA nm EQ expr",
 /* 148 */ "setlist ::= setlist COMMA LP idlist RP EQ expr",
 /* 149 */ "setlist ::= nm EQ expr",
 /* 150 */ "setlist ::= LP idlist RP EQ expr",
 /* 151 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert",
 /* 152 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES",
 /* 153 */ "upsert ::=",
 /* 154 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt",
 /* 155 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING",
 /* 156 */ "upsert ::= ON CONFLICT DO NOTHING",
 /* 157 */ "insert_cmd ::= INSERT orconf",
 /* 158 */ "insert_cmd ::= REPLACE",
 /* 159 */ "idlist_opt ::=",
 /* 160 */ "idlist_opt ::= LP idlist RP",
 /* 161 */ "idlist ::= idlist COMMA nm",
 /* 162 */ "idlist ::= nm",
 /* 163 */ "expr ::= LP expr RP",
 /* 164 */ "expr ::= ID|INDEXED",
 /* 165 */ "expr ::= JOIN_KW",
 /* 166 */ "expr ::= nm DOT nm",
 /* 167 */ "expr ::= nm DOT nm DOT nm",
 /* 168 */ "term ::= NULL|FLOAT|BLOB",
 /* 169 */ "term ::= STRING",
 /* 170 */ "term ::= INTEGER",
 /* 171 */ "expr ::= VARIABLE",
 /* 172 */ "expr ::= expr COLLATE ID|STRING",
 /* 173 */ "expr ::= CAST LP expr AS typetoken RP",
 /* 174 */ "expr ::= ID|INDEXED LP distinct exprlist RP",
 /* 175 */ "expr ::= ID|INDEXED LP STAR RP",
 /* 176 */ "expr ::= ID|INDEXED LP distinct exprlist RP over_clause",
 /* 177 */ "expr ::= ID|INDEXED LP STAR RP over_clause",
 /* 178 */ "term ::= CTIME_KW",
 /* 179 */ "expr ::= LP nexprlist COMMA expr RP",
 /* 180 */ "expr ::= expr AND expr",
 /* 181 */ "expr ::= expr OR expr",
 /* 182 */ "expr ::= expr LT|GT|GE|LE expr",
 /* 183 */ "expr ::= expr EQ|NE expr",
 /* 184 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr",
 /* 185 */ "expr ::= expr PLUS|MINUS expr",
 /* 186 */ "expr ::= expr STAR|SLASH|REM expr",
 /* 187 */ "expr ::= expr CONCAT expr",
 /* 188 */ "likeop ::= NOT LIKE_KW|MATCH",
 /* 189 */ "expr ::= expr likeop expr",
 /* 190 */ "expr ::= expr likeop expr ESCAPE expr",
 /* 191 */ "expr ::= expr ISNULL|NOTNULL",
 /* 192 */ "expr ::= expr NOT NULL",
 /* 193 */ "expr ::= expr IS expr",
 /* 194 */ "expr ::= expr IS NOT expr",
 /* 195 */ "expr ::= NOT expr",
 /* 196 */ "expr ::= BITNOT expr",
 /* 197 */ "expr ::= PLUS|MINUS expr",
 /* 198 */ "between_op ::= BETWEEN",
 /* 199 */ "between_op ::= NOT BETWEEN",
 /* 200 */ "expr ::= expr between_op expr AND expr",
 /* 201 */ "in_op ::= IN",
 /* 202 */ "in_op ::= NOT IN",
 /* 203 */ "expr ::= expr in_op LP exprlist RP",
 /* 204 */ "expr ::= LP select RP",
 /* 205 */ "expr ::= expr in_op LP select RP",
 /* 206 */ "expr ::= expr in_op nm dbnm paren_exprlist",
 /* 207 */ "expr ::= EXISTS LP select RP",
 /* 208 */ "expr ::= CASE case_operand case_exprlist case_else END",
 /* 209 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr",
 /* 210 */ "case_exprlist ::= WHEN expr THEN expr",
 /* 211 */ "case_else ::= ELSE expr",
 /* 212 */ "case_else ::=",
 /* 213 */ "case_operand ::= expr",
 /* 214 */ "case_operand ::=",
 /* 215 */ "exprlist ::=",
 /* 216 */ "nexprlist ::= nexprlist COMMA expr",
 /* 217 */ "nexprlist ::= expr",
 /* 218 */ "paren_exprlist ::=",
 /* 219 */ "paren_exprlist ::= LP exprlist RP",
 /* 220 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt",
 /* 221 */ "uniqueflag ::= UNIQUE",
 /* 222 */ "uniqueflag ::=",
 /* 223 */ "eidlist_opt ::=",
 /* 224 */ "eidlist_opt ::= LP eidlist RP",
 /* 225 */ "eidlist ::= eidlist COMMA nm collate sortorder",
 /* 226 */ "eidlist ::= nm collate sortorder",
 /* 227 */ "collate ::=",
 /* 228 */ "collate ::= COLLATE ID|STRING",
 /* 229 */ "cmd ::= DROP INDEX ifexists fullname",
 /* 230 */ "cmd ::= VACUUM vinto",
 /* 231 */ "cmd ::= VACUUM nm vinto",
 /* 232 */ "vinto ::= INTO expr",
 /* 233 */ "vinto ::=",
 /* 234 */ "cmd ::= PRAGMA nm dbnm",
 /* 235 */ "cmd ::= PRAGMA nm dbnm EQ nmnum",
 /* 236 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP",
 /* 237 */ "cmd ::= PRAGMA nm dbnm EQ minus_num",
 /* 238 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP",
 /* 239 */ "plus_num ::= PLUS INTEGER|FLOAT",
 /* 240 */ "minus_num ::= MINUS INTEGER|FLOAT",
 /* 241 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END",
 /* 242 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause",
 /* 243 */ "trigger_time ::= BEFORE|AFTER",
 /* 244 */ "trigger_time ::= INSTEAD OF",
 /* 245 */ "trigger_time ::=",
 /* 246 */ "trigger_event ::= DELETE|INSERT",
 /* 247 */ "trigger_event ::= UPDATE",
 /* 248 */ "trigger_event ::= UPDATE OF idlist",
 /* 249 */ "when_clause ::=",
 /* 250 */ "when_clause ::= WHEN expr",
 /* 251 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI",
 /* 252 */ "trigger_cmd_list ::= trigger_cmd SEMI",
 /* 253 */ "trnm ::= nm DOT nm",
 /* 254 */ "tridxby ::= INDEXED BY nm",
 /* 255 */ "tridxby ::= NOT INDEXED",
 /* 256 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt",
 /* 257 */ "trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt",
 /* 258 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt",
 /* 259 */ "trigger_cmd ::= scanpt select scanpt",
 /* 260 */ "expr ::= RAISE LP IGNORE RP",
 /* 261 */ "expr ::= RAISE LP raisetype COMMA nm RP",
 /* 262 */ "raisetype ::= ROLLBACK",
 /* 263 */ "raisetype ::= ABORT",
 /* 264 */ "raisetype ::= FAIL",
 /* 265 */ "cmd ::= DROP TRIGGER ifexists fullname",
 /* 266 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt",
 /* 267 */ "cmd ::= DETACH database_kw_opt expr",
 /* 268 */ "key_opt ::=",
 /* 269 */ "key_opt ::= KEY expr",
 /* 270 */ "cmd ::= REINDEX",
 /* 271 */ "cmd ::= REINDEX nm dbnm",
 /* 272 */ "cmd ::= ANALYZE",
 /* 273 */ "cmd ::= ANALYZE nm dbnm",
 /* 274 */ "cmd ::= ALTER TABLE fullname RENAME TO nm",
 /* 275 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist",
 /* 276 */ "add_column_fullname ::= fullname",
 /* 277 */ "cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm",
 /* 278 */ "cmd ::= create_vtab",
 /* 279 */ "cmd ::= create_vtab LP vtabarglist RP",
 /* 280 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm",
 /* 281 */ "vtabarg ::=",
 /* 282 */ "vtabargtoken ::= ANY",
 /* 283 */ "vtabargtoken ::= lp anylist RP",
 /* 284 */ "lp ::= LP",
 /* 285 */ "with ::= WITH wqlist",
 /* 286 */ "with ::= WITH RECURSIVE wqlist",
 /* 287 */ "wqlist ::= nm eidlist_opt AS LP select RP",
 /* 288 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP",
 /* 289 */ "windowdefn_list ::= windowdefn",
 /* 290 */ "windowdefn_list ::= windowdefn_list COMMA windowdefn",
 /* 291 */ "windowdefn ::= nm AS LP window RP",
 /* 292 */ "window ::= PARTITION BY nexprlist orderby_opt frame_opt",
 /* 293 */ "window ::= nm PARTITION BY nexprlist orderby_opt frame_opt",
 /* 294 */ "window ::= ORDER BY sortlist frame_opt",
 /* 295 */ "window ::= nm ORDER BY sortlist frame_opt",
 /* 296 */ "window ::= frame_opt",
 /* 297 */ "window ::= nm frame_opt",
 /* 298 */ "frame_opt ::=",
 /* 299 */ "frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt",
 /* 300 */ "frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt",
 /* 301 */ "range_or_rows ::= RANGE|ROWS|GROUPS",
 /* 302 */ "frame_bound_s ::= frame_bound",
 /* 303 */ "frame_bound_s ::= UNBOUNDED PRECEDING",
 /* 304 */ "frame_bound_e ::= frame_bound",
 /* 305 */ "frame_bound_e ::= UNBOUNDED FOLLOWING",
 /* 306 */ "frame_bound ::= expr PRECEDING|FOLLOWING",
 /* 307 */ "frame_bound ::= CURRENT ROW",
 /* 308 */ "frame_exclude_opt ::=",
 /* 309 */ "frame_exclude_opt ::= EXCLUDE frame_exclude",
 /* 310 */ "frame_exclude ::= NO OTHERS",
 /* 311 */ "frame_exclude ::= CURRENT ROW",
 /* 312 */ "frame_exclude ::= GROUP|TIES",
 /* 313 */ "window_clause ::= WINDOW windowdefn_list",



 /* 314 */ "over_clause ::= filter_opt OVER LP window RP",
 /* 315 */ "over_clause ::= filter_opt OVER nm",
 /* 316 */ "filter_opt ::=",
 /* 317 */ "filter_opt ::= FILTER LP WHERE expr RP",
 /* 318 */ "input ::= cmdlist",
 /* 319 */ "cmdlist ::= cmdlist ecmd",
 /* 320 */ "cmdlist ::= ecmd",
 /* 321 */ "ecmd ::= SEMI",
 /* 322 */ "ecmd ::= cmdx SEMI",
 /* 323 */ "ecmd ::= explain cmdx",
 /* 324 */ "trans_opt ::=",
 /* 325 */ "trans_opt ::= TRANSACTION",
 /* 326 */ "trans_opt ::= TRANSACTION nm",
 /* 327 */ "savepoint_opt ::= SAVEPOINT",
 /* 328 */ "savepoint_opt ::=",
 /* 329 */ "cmd ::= create_table create_table_args",
 /* 330 */ "columnlist ::= columnlist COMMA columnname carglist",
 /* 331 */ "columnlist ::= columnname carglist",
 /* 332 */ "nm ::= ID|INDEXED",
 /* 333 */ "nm ::= STRING",
 /* 334 */ "nm ::= JOIN_KW",
 /* 335 */ "typetoken ::= typename",
 /* 336 */ "typename ::= ID|STRING",
 /* 337 */ "signed ::= plus_num",
 /* 338 */ "signed ::= minus_num",
 /* 339 */ "carglist ::= carglist ccons",
 /* 340 */ "carglist ::=",
 /* 341 */ "ccons ::= NULL onconf",
 /* 342 */ "conslist_opt ::= COMMA conslist",
 /* 343 */ "conslist ::= conslist tconscomma tcons",
 /* 344 */ "conslist ::= tcons",
 /* 345 */ "tconscomma ::=",
 /* 346 */ "defer_subclause_opt ::= defer_subclause",
 /* 347 */ "resolvetype ::= raisetype",
 /* 348 */ "selectnowith ::= oneselect",
 /* 349 */ "oneselect ::= values",
 /* 350 */ "sclp ::= selcollist COMMA",
 /* 351 */ "as ::= ID|STRING",
 /* 352 */ "expr ::= term",
 /* 353 */ "likeop ::= LIKE_KW|MATCH",
 /* 354 */ "exprlist ::= nexprlist",
 /* 355 */ "nmnum ::= plus_num",
 /* 356 */ "nmnum ::= nm",
 /* 357 */ "nmnum ::= ON",
 /* 358 */ "nmnum ::= DELETE",
 /* 359 */ "nmnum ::= DEFAULT",
 /* 360 */ "plus_num ::= INTEGER|FLOAT",
 /* 361 */ "foreach_clause ::=",
 /* 362 */ "foreach_clause ::= FOR EACH ROW",
 /* 363 */ "trnm ::= nm",
 /* 364 */ "tridxby ::=",
 /* 365 */ "database_kw_opt ::= DATABASE",
 /* 366 */ "database_kw_opt ::=",
 /* 367 */ "kwcolumn_opt ::=",
 /* 368 */ "kwcolumn_opt ::= COLUMNKW",
 /* 369 */ "vtabarglist ::= vtabarg",
 /* 370 */ "vtabarglist ::= vtabarglist COMMA vtabarg",
 /* 371 */ "vtabarg ::= vtabarg vtabargtoken",
 /* 372 */ "anylist ::=",
 /* 373 */ "anylist ::= anylist LP anylist RP",
 /* 374 */ "anylist ::= anylist ANY",
 /* 375 */ "with ::=",
};
#endif /* NDEBUG */


#if YYSTACKDEPTH<=0
/*
** Try to increase the size of the parser stack.  Return the number
................................................................................
    ** being destroyed before it is finished parsing.
    **
    ** Note: during a reduce, the only symbols destroyed are those
    ** which appear on the RHS of the rule, but which are *not* used
    ** inside the C code.
    */
/********* Begin destructor definitions ***************************************/
    case 195: /* select */
    case 228: /* selectnowith */
    case 229: /* oneselect */
    case 241: /* values */
{
sqlite3SelectDelete(pParse->db, (yypminor->yy391));
}
      break;
    case 206: /* term */
    case 207: /* expr */
    case 235: /* where_opt */
    case 237: /* having_opt */
    case 249: /* on_opt */
    case 264: /* case_operand */
    case 266: /* case_else */
    case 269: /* vinto */
    case 276: /* when_clause */
    case 281: /* key_opt */
    case 295: /* filter_opt */
{
sqlite3ExprDelete(pParse->db, (yypminor->yy102));
}
      break;
    case 211: /* eidlist_opt */
    case 220: /* sortlist */
    case 221: /* eidlist */
    case 233: /* selcollist */
    case 236: /* groupby_opt */
    case 238: /* orderby_opt */
    case 242: /* nexprlist */
    case 243: /* sclp */
    case 251: /* exprlist */
    case 255: /* setlist */
    case 263: /* paren_exprlist */
    case 265: /* case_exprlist */
    case 294: /* part_opt */
{
sqlite3ExprListDelete(pParse->db, (yypminor->yy94));
}
      break;
    case 227: /* fullname */
    case 234: /* from */
    case 245: /* seltablist */
    case 246: /* stl_prefix */
    case 252: /* xfullname */
{
sqlite3SrcListDelete(pParse->db, (yypminor->yy407));
}
      break;
    case 230: /* wqlist */
{
sqlite3WithDelete(pParse->db, (yypminor->yy243));
}
      break;
    case 240: /* window_clause */
    case 290: /* windowdefn_list */
{
sqlite3WindowListDelete(pParse->db, (yypminor->yy379));
}
      break;
    case 250: /* using_opt */
    case 253: /* idlist */
    case 257: /* idlist_opt */
{
sqlite3IdListDelete(pParse->db, (yypminor->yy76));
}
      break;
    case 259: /* over_clause */
    case 291: /* windowdefn */
    case 292: /* window */
    case 293: /* frame_opt */

{
sqlite3WindowDelete(pParse->db, (yypminor->yy379));
}
      break;
    case 272: /* trigger_cmd_list */
    case 277: /* trigger_cmd */
{
sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy11));
}
      break;
    case 274: /* trigger_event */
{
sqlite3IdListDelete(pParse->db, (yypminor->yy298).b);
}
      break;
    case 297: /* frame_bound */
    case 298: /* frame_bound_s */
    case 299: /* frame_bound_e */
{
sqlite3ExprDelete(pParse->db, (yypminor->yy389).pExpr);
}
      break;
/********* End destructor definitions *****************************************/
    default:  break;   /* If no destructor action specified: do nothing */
  }
}

................................................................................
  assert( stateno <= YY_SHIFT_COUNT );
#if defined(YYCOVERAGE)
  yycoverage[stateno][iLookAhead] = 1;
#endif
  do{
    i = yy_shift_ofst[stateno];
    assert( i>=0 );

    /* assert( i+YYNTOKEN<=(int)YY_NLOOKAHEAD ); */
    assert( iLookAhead!=YYNOCODE );
    assert( iLookAhead < YYNTOKEN );
    i += iLookAhead;

    if( i>=YY_NLOOKAHEAD || yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
      YYCODETYPE iFallback;            /* Fallback token */
      if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
             && (iFallback = yyFallback[iLookAhead])!=0 ){

#ifndef NDEBUG
        if( yyTraceFILE ){
          fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
             yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
        }
#endif
        assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
................................................................................
        iLookAhead = iFallback;
        continue;
      }
#endif
#ifdef YYWILDCARD
      {
        int j = i - iLookAhead + YYWILDCARD;
        if( 
#if YY_SHIFT_MIN+YYWILDCARD<0
          j>=0 &&
#endif
#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT
          j<YY_ACTTAB_COUNT &&
#endif
          j<(int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])) &&
          yy_lookahead[j]==YYWILDCARD && iLookAhead>0
        ){
#ifndef NDEBUG
          if( yyTraceFILE ){
            fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
               yyTracePrompt, yyTokenName[iLookAhead],
               yyTokenName[YYWILDCARD]);
          }
#endif /* NDEBUG */
          return yy_action[j];
        }
      }
#endif /* YYWILDCARD */
      return yy_default[stateno];
    }else{

      return yy_action[i];
    }
  }while(1);
}

/*
** Find the appropriate action for a parser given the non-terminal
................................................................................
  yytos->minor.yy0 = yyMinor;
  yyTraceShift(yypParser, yyNewState, "Shift");
}

/* For rule J, yyRuleInfoLhs[J] contains the symbol on the left-hand side
** of that rule */
static const YYCODETYPE yyRuleInfoLhs[] = {
   180,  /* (0) explain ::= EXPLAIN */
   180,  /* (1) explain ::= EXPLAIN QUERY PLAN */
   179,  /* (2) cmdx ::= cmd */
   181,  /* (3) cmd ::= BEGIN transtype trans_opt */
   182,  /* (4) transtype ::= */
   182,  /* (5) transtype ::= DEFERRED */
   182,  /* (6) transtype ::= IMMEDIATE */
   182,  /* (7) transtype ::= EXCLUSIVE */
   181,  /* (8) cmd ::= COMMIT|END trans_opt */
   181,  /* (9) cmd ::= ROLLBACK trans_opt */
   181,  /* (10) cmd ::= SAVEPOINT nm */
   181,  /* (11) cmd ::= RELEASE savepoint_opt nm */
   181,  /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */
   186,  /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */
   188,  /* (14) createkw ::= CREATE */
   190,  /* (15) ifnotexists ::= */
   190,  /* (16) ifnotexists ::= IF NOT EXISTS */
   189,  /* (17) temp ::= TEMP */
   189,  /* (18) temp ::= */
   187,  /* (19) create_table_args ::= LP columnlist conslist_opt RP table_options */
   187,  /* (20) create_table_args ::= AS select */
   194,  /* (21) table_options ::= */
   194,  /* (22) table_options ::= WITHOUT nm */
   196,  /* (23) columnname ::= nm typetoken */
   198,  /* (24) typetoken ::= */
   198,  /* (25) typetoken ::= typename LP signed RP */
   198,  /* (26) typetoken ::= typename LP signed COMMA signed RP */
   199,  /* (27) typename ::= typename ID|STRING */
   203,  /* (28) scanpt ::= */
   204,  /* (29) scantok ::= */
   205,  /* (30) ccons ::= CONSTRAINT nm */
   205,  /* (31) ccons ::= DEFAULT scantok term */
   205,  /* (32) ccons ::= DEFAULT LP expr RP */
   205,  /* (33) ccons ::= DEFAULT PLUS scantok term */
   205,  /* (34) ccons ::= DEFAULT MINUS scantok term */
   205,  /* (35) ccons ::= DEFAULT scantok ID|INDEXED */
   205,  /* (36) ccons ::= NOT NULL onconf */
   205,  /* (37) ccons ::= PRIMARY KEY sortorder onconf autoinc */
   205,  /* (38) ccons ::= UNIQUE onconf */
   205,  /* (39) ccons ::= CHECK LP expr RP */
   205,  /* (40) ccons ::= REFERENCES nm eidlist_opt refargs */
   205,  /* (41) ccons ::= defer_subclause */
   205,  /* (42) ccons ::= COLLATE ID|STRING */
   210,  /* (43) autoinc ::= */
   210,  /* (44) autoinc ::= AUTOINCR */
   212,  /* (45) refargs ::= */
   212,  /* (46) refargs ::= refargs refarg */
   214,  /* (47) refarg ::= MATCH nm */
   214,  /* (48) refarg ::= ON INSERT refact */
   214,  /* (49) refarg ::= ON DELETE refact */
   214,  /* (50) refarg ::= ON UPDATE refact */
   215,  /* (51) refact ::= SET NULL */
   215,  /* (52) refact ::= SET DEFAULT */
   215,  /* (53) refact ::= CASCADE */
   215,  /* (54) refact ::= RESTRICT */
   215,  /* (55) refact ::= NO ACTION */
   213,  /* (56) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
   213,  /* (57) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
   216,  /* (58) init_deferred_pred_opt ::= */
   216,  /* (59) init_deferred_pred_opt ::= INITIALLY DEFERRED */
   216,  /* (60) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
   193,  /* (61) conslist_opt ::= */
   218,  /* (62) tconscomma ::= COMMA */
   219,  /* (63) tcons ::= CONSTRAINT nm */
   219,  /* (64) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
   219,  /* (65) tcons ::= UNIQUE LP sortlist RP onconf */
   219,  /* (66) tcons ::= CHECK LP expr RP onconf */
   219,  /* (67) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
   222,  /* (68) defer_subclause_opt ::= */
   208,  /* (69) onconf ::= */
   208,  /* (70) onconf ::= ON CONFLICT resolvetype */
   223,  /* (71) orconf ::= */
   223,  /* (72) orconf ::= OR resolvetype */
   224,  /* (73) resolvetype ::= IGNORE */
   224,  /* (74) resolvetype ::= REPLACE */
   181,  /* (75) cmd ::= DROP TABLE ifexists fullname */
   226,  /* (76) ifexists ::= IF EXISTS */
   226,  /* (77) ifexists ::= */
   181,  /* (78) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
   181,  /* (79) cmd ::= DROP VIEW ifexists fullname */
   181,  /* (80) cmd ::= select */
   195,  /* (81) select ::= WITH wqlist selectnowith */
   195,  /* (82) select ::= WITH RECURSIVE wqlist selectnowith */
   195,  /* (83) select ::= selectnowith */
   228,  /* (84) selectnowith ::= selectnowith multiselect_op oneselect */
   231,  /* (85) multiselect_op ::= UNION */
   231,  /* (86) multiselect_op ::= UNION ALL */
   231,  /* (87) multiselect_op ::= EXCEPT|INTERSECT */
   229,  /* (88) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
   229,  /* (89) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
   241,  /* (90) values ::= VALUES LP nexprlist RP */
   241,  /* (91) values ::= values COMMA LP nexprlist RP */
   232,  /* (92) distinct ::= DISTINCT */
   232,  /* (93) distinct ::= ALL */
   232,  /* (94) distinct ::= */
   243,  /* (95) sclp ::= */
   233,  /* (96) selcollist ::= sclp scanpt expr scanpt as */
   233,  /* (97) selcollist ::= sclp scanpt STAR */
   233,  /* (98) selcollist ::= sclp scanpt nm DOT STAR */
   244,  /* (99) as ::= AS nm */
   244,  /* (100) as ::= */
   234,  /* (101) from ::= */
   234,  /* (102) from ::= FROM seltablist */
   246,  /* (103) stl_prefix ::= seltablist joinop */
   246,  /* (104) stl_prefix ::= */
   245,  /* (105) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
   245,  /* (106) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
   245,  /* (107) seltablist ::= stl_prefix LP select RP as on_opt using_opt */
   245,  /* (108) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
   191,  /* (109) dbnm ::= */
   191,  /* (110) dbnm ::= DOT nm */
   227,  /* (111) fullname ::= nm */
   227,  /* (112) fullname ::= nm DOT nm */
   252,  /* (113) xfullname ::= nm */
   252,  /* (114) xfullname ::= nm DOT nm */
   252,  /* (115) xfullname ::= nm DOT nm AS nm */
   252,  /* (116) xfullname ::= nm AS nm */
   247,  /* (117) joinop ::= COMMA|JOIN */
   247,  /* (118) joinop ::= JOIN_KW JOIN */
   247,  /* (119) joinop ::= JOIN_KW nm JOIN */
   247,  /* (120) joinop ::= JOIN_KW nm nm JOIN */
   249,  /* (121) on_opt ::= ON expr */
   249,  /* (122) on_opt ::= */
   248,  /* (123) indexed_opt ::= */
   248,  /* (124) indexed_opt ::= INDEXED BY nm */
   248,  /* (125) indexed_opt ::= NOT INDEXED */
   250,  /* (126) using_opt ::= USING LP idlist RP */
   250,  /* (127) using_opt ::= */
   238,  /* (128) orderby_opt ::= */
   238,  /* (129) orderby_opt ::= ORDER BY sortlist */
   220,  /* (130) sortlist ::= sortlist COMMA expr sortorder */
   220,  /* (131) sortlist ::= expr sortorder */
   209,  /* (132) sortorder ::= ASC */
   209,  /* (133) sortorder ::= DESC */
   209,  /* (134) sortorder ::= */
   236,  /* (135) groupby_opt ::= */
   236,  /* (136) groupby_opt ::= GROUP BY nexprlist */
   237,  /* (137) having_opt ::= */
   237,  /* (138) having_opt ::= HAVING expr */
   239,  /* (139) limit_opt ::= */
   239,  /* (140) limit_opt ::= LIMIT expr */
   239,  /* (141) limit_opt ::= LIMIT expr OFFSET expr */
   239,  /* (142) limit_opt ::= LIMIT expr COMMA expr */
   181,  /* (143) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
   235,  /* (144) where_opt ::= */
   235,  /* (145) where_opt ::= WHERE expr */
   181,  /* (146) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
   255,  /* (147) setlist ::= setlist COMMA nm EQ expr */
   255,  /* (148) setlist ::= setlist COMMA LP idlist RP EQ expr */
   255,  /* (149) setlist ::= nm EQ expr */
   255,  /* (150) setlist ::= LP idlist RP EQ expr */
   181,  /* (151) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
   181,  /* (152) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
   258,  /* (153) upsert ::= */
   258,  /* (154) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
   258,  /* (155) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
   258,  /* (156) upsert ::= ON CONFLICT DO NOTHING */
   256,  /* (157) insert_cmd ::= INSERT orconf */
   256,  /* (158) insert_cmd ::= REPLACE */
   257,  /* (159) idlist_opt ::= */
   257,  /* (160) idlist_opt ::= LP idlist RP */
   253,  /* (161) idlist ::= idlist COMMA nm */
   253,  /* (162) idlist ::= nm */
   207,  /* (163) expr ::= LP expr RP */
   207,  /* (164) expr ::= ID|INDEXED */
   207,  /* (165) expr ::= JOIN_KW */
   207,  /* (166) expr ::= nm DOT nm */
   207,  /* (167) expr ::= nm DOT nm DOT nm */
   206,  /* (168) term ::= NULL|FLOAT|BLOB */
   206,  /* (169) term ::= STRING */
   206,  /* (170) term ::= INTEGER */
   207,  /* (171) expr ::= VARIABLE */
   207,  /* (172) expr ::= expr COLLATE ID|STRING */
   207,  /* (173) expr ::= CAST LP expr AS typetoken RP */
   207,  /* (174) expr ::= ID|INDEXED LP distinct exprlist RP */
   207,  /* (175) expr ::= ID|INDEXED LP STAR RP */
   207,  /* (176) expr ::= ID|INDEXED LP distinct exprlist RP over_clause */
   207,  /* (177) expr ::= ID|INDEXED LP STAR RP over_clause */
   206,  /* (178) term ::= CTIME_KW */
   207,  /* (179) expr ::= LP nexprlist COMMA expr RP */
   207,  /* (180) expr ::= expr AND expr */
   207,  /* (181) expr ::= expr OR expr */
   207,  /* (182) expr ::= expr LT|GT|GE|LE expr */
   207,  /* (183) expr ::= expr EQ|NE expr */
   207,  /* (184) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
   207,  /* (185) expr ::= expr PLUS|MINUS expr */
   207,  /* (186) expr ::= expr STAR|SLASH|REM expr */
   207,  /* (187) expr ::= expr CONCAT expr */
   260,  /* (188) likeop ::= NOT LIKE_KW|MATCH */
   207,  /* (189) expr ::= expr likeop expr */
   207,  /* (190) expr ::= expr likeop expr ESCAPE expr */
   207,  /* (191) expr ::= expr ISNULL|NOTNULL */
   207,  /* (192) expr ::= expr NOT NULL */
   207,  /* (193) expr ::= expr IS expr */
   207,  /* (194) expr ::= expr IS NOT expr */
   207,  /* (195) expr ::= NOT expr */
   207,  /* (196) expr ::= BITNOT expr */
   207,  /* (197) expr ::= PLUS|MINUS expr */
   261,  /* (198) between_op ::= BETWEEN */
   261,  /* (199) between_op ::= NOT BETWEEN */
   207,  /* (200) expr ::= expr between_op expr AND expr */
   262,  /* (201) in_op ::= IN */
   262,  /* (202) in_op ::= NOT IN */
   207,  /* (203) expr ::= expr in_op LP exprlist RP */
   207,  /* (204) expr ::= LP select RP */
   207,  /* (205) expr ::= expr in_op LP select RP */
   207,  /* (206) expr ::= expr in_op nm dbnm paren_exprlist */
   207,  /* (207) expr ::= EXISTS LP select RP */
   207,  /* (208) expr ::= CASE case_operand case_exprlist case_else END */
   265,  /* (209) case_exprlist ::= case_exprlist WHEN expr THEN expr */
   265,  /* (210) case_exprlist ::= WHEN expr THEN expr */
   266,  /* (211) case_else ::= ELSE expr */
   266,  /* (212) case_else ::= */
   264,  /* (213) case_operand ::= expr */
   264,  /* (214) case_operand ::= */
   251,  /* (215) exprlist ::= */
   242,  /* (216) nexprlist ::= nexprlist COMMA expr */
   242,  /* (217) nexprlist ::= expr */
   263,  /* (218) paren_exprlist ::= */
   263,  /* (219) paren_exprlist ::= LP exprlist RP */
   181,  /* (220) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
   267,  /* (221) uniqueflag ::= UNIQUE */
   267,  /* (222) uniqueflag ::= */
   211,  /* (223) eidlist_opt ::= */
   211,  /* (224) eidlist_opt ::= LP eidlist RP */
   221,  /* (225) eidlist ::= eidlist COMMA nm collate sortorder */
   221,  /* (226) eidlist ::= nm collate sortorder */
   268,  /* (227) collate ::= */
   268,  /* (228) collate ::= COLLATE ID|STRING */
   181,  /* (229) cmd ::= DROP INDEX ifexists fullname */
   181,  /* (230) cmd ::= VACUUM vinto */
   181,  /* (231) cmd ::= VACUUM nm vinto */
   269,  /* (232) vinto ::= INTO expr */
   269,  /* (233) vinto ::= */
   181,  /* (234) cmd ::= PRAGMA nm dbnm */
   181,  /* (235) cmd ::= PRAGMA nm dbnm EQ nmnum */
   181,  /* (236) cmd ::= PRAGMA nm dbnm LP nmnum RP */
   181,  /* (237) cmd ::= PRAGMA nm dbnm EQ minus_num */
   181,  /* (238) cmd ::= PRAGMA nm dbnm LP minus_num RP */
   201,  /* (239) plus_num ::= PLUS INTEGER|FLOAT */
   202,  /* (240) minus_num ::= MINUS INTEGER|FLOAT */
   181,  /* (241) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
   271,  /* (242) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
   273,  /* (243) trigger_time ::= BEFORE|AFTER */
   273,  /* (244) trigger_time ::= INSTEAD OF */
   273,  /* (245) trigger_time ::= */
   274,  /* (246) trigger_event ::= DELETE|INSERT */
   274,  /* (247) trigger_event ::= UPDATE */
   274,  /* (248) trigger_event ::= UPDATE OF idlist */
   276,  /* (249) when_clause ::= */
   276,  /* (250) when_clause ::= WHEN expr */
   272,  /* (251) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
   272,  /* (252) trigger_cmd_list ::= trigger_cmd SEMI */
   278,  /* (253) trnm ::= nm DOT nm */
   279,  /* (254) tridxby ::= INDEXED BY nm */
   279,  /* (255) tridxby ::= NOT INDEXED */
   277,  /* (256) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
   277,  /* (257) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
   277,  /* (258) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
   277,  /* (259) trigger_cmd ::= scanpt select scanpt */
   207,  /* (260) expr ::= RAISE LP IGNORE RP */
   207,  /* (261) expr ::= RAISE LP raisetype COMMA nm RP */
   225,  /* (262) raisetype ::= ROLLBACK */
   225,  /* (263) raisetype ::= ABORT */
   225,  /* (264) raisetype ::= FAIL */
   181,  /* (265) cmd ::= DROP TRIGGER ifexists fullname */
   181,  /* (266) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
   181,  /* (267) cmd ::= DETACH database_kw_opt expr */
   281,  /* (268) key_opt ::= */
   281,  /* (269) key_opt ::= KEY expr */
   181,  /* (270) cmd ::= REINDEX */
   181,  /* (271) cmd ::= REINDEX nm dbnm */
   181,  /* (272) cmd ::= ANALYZE */
   181,  /* (273) cmd ::= ANALYZE nm dbnm */
   181,  /* (274) cmd ::= ALTER TABLE fullname RENAME TO nm */
   181,  /* (275) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
   282,  /* (276) add_column_fullname ::= fullname */
   181,  /* (277) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
   181,  /* (278) cmd ::= create_vtab */
   181,  /* (279) cmd ::= create_vtab LP vtabarglist RP */
   284,  /* (280) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
   286,  /* (281) vtabarg ::= */
   287,  /* (282) vtabargtoken ::= ANY */
   287,  /* (283) vtabargtoken ::= lp anylist RP */
   288,  /* (284) lp ::= LP */
   254,  /* (285) with ::= WITH wqlist */
   254,  /* (286) with ::= WITH RECURSIVE wqlist */
   230,  /* (287) wqlist ::= nm eidlist_opt AS LP select RP */
   230,  /* (288) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
   290,  /* (289) windowdefn_list ::= windowdefn */
   290,  /* (290) windowdefn_list ::= windowdefn_list COMMA windowdefn */
   291,  /* (291) windowdefn ::= nm AS LP window RP */
   292,  /* (292) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
   292,  /* (293) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
   292,  /* (294) window ::= ORDER BY sortlist frame_opt */
   292,  /* (295) window ::= nm ORDER BY sortlist frame_opt */
   292,  /* (296) window ::= frame_opt */
   292,  /* (297) window ::= nm frame_opt */
   293,  /* (298) frame_opt ::= */
   293,  /* (299) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
   293,  /* (300) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
   296,  /* (301) range_or_rows ::= RANGE|ROWS|GROUPS */
   298,  /* (302) frame_bound_s ::= frame_bound */
   298,  /* (303) frame_bound_s ::= UNBOUNDED PRECEDING */
   299,  /* (304) frame_bound_e ::= frame_bound */
   299,  /* (305) frame_bound_e ::= UNBOUNDED FOLLOWING */
   297,  /* (306) frame_bound ::= expr PRECEDING|FOLLOWING */
   297,  /* (307) frame_bound ::= CURRENT ROW */
   300,  /* (308) frame_exclude_opt ::= */
   300,  /* (309) frame_exclude_opt ::= EXCLUDE frame_exclude */
   301,  /* (310) frame_exclude ::= NO OTHERS */
   301,  /* (311) frame_exclude ::= CURRENT ROW */
   301,  /* (312) frame_exclude ::= GROUP|TIES */
   240,  /* (313) window_clause ::= WINDOW windowdefn_list */
   259,  /* (314) over_clause ::= filter_opt OVER LP window RP */
   259,  /* (315) over_clause ::= filter_opt OVER nm */
   295,  /* (316) filter_opt ::= */
   295,  /* (317) filter_opt ::= FILTER LP WHERE expr RP */
   176,  /* (318) input ::= cmdlist */
   177,  /* (319) cmdlist ::= cmdlist ecmd */
   177,  /* (320) cmdlist ::= ecmd */
   178,  /* (321) ecmd ::= SEMI */
   178,  /* (322) ecmd ::= cmdx SEMI */
   178,  /* (323) ecmd ::= explain cmdx */
   183,  /* (324) trans_opt ::= */
   183,  /* (325) trans_opt ::= TRANSACTION */
   183,  /* (326) trans_opt ::= TRANSACTION nm */
   185,  /* (327) savepoint_opt ::= SAVEPOINT */
   185,  /* (328) savepoint_opt ::= */
   181,  /* (329) cmd ::= create_table create_table_args */
   192,  /* (330) columnlist ::= columnlist COMMA columnname carglist */
   192,  /* (331) columnlist ::= columnname carglist */
   184,  /* (332) nm ::= ID|INDEXED */
   184,  /* (333) nm ::= STRING */
   184,  /* (334) nm ::= JOIN_KW */
   198,  /* (335) typetoken ::= typename */
   199,  /* (336) typename ::= ID|STRING */
   200,  /* (337) signed ::= plus_num */
   200,  /* (338) signed ::= minus_num */
   197,  /* (339) carglist ::= carglist ccons */
   197,  /* (340) carglist ::= */
   205,  /* (341) ccons ::= NULL onconf */
   193,  /* (342) conslist_opt ::= COMMA conslist */
   217,  /* (343) conslist ::= conslist tconscomma tcons */
   217,  /* (344) conslist ::= tcons */
   218,  /* (345) tconscomma ::= */
   222,  /* (346) defer_subclause_opt ::= defer_subclause */
   224,  /* (347) resolvetype ::= raisetype */
   228,  /* (348) selectnowith ::= oneselect */
   229,  /* (349) oneselect ::= values */
   243,  /* (350) sclp ::= selcollist COMMA */
   244,  /* (351) as ::= ID|STRING */
   207,  /* (352) expr ::= term */
   260,  /* (353) likeop ::= LIKE_KW|MATCH */
   251,  /* (354) exprlist ::= nexprlist */
   270,  /* (355) nmnum ::= plus_num */
   270,  /* (356) nmnum ::= nm */
   270,  /* (357) nmnum ::= ON */
   270,  /* (358) nmnum ::= DELETE */
   270,  /* (359) nmnum ::= DEFAULT */
   201,  /* (360) plus_num ::= INTEGER|FLOAT */
   275,  /* (361) foreach_clause ::= */
   275,  /* (362) foreach_clause ::= FOR EACH ROW */
   278,  /* (363) trnm ::= nm */
   279,  /* (364) tridxby ::= */
   280,  /* (365) database_kw_opt ::= DATABASE */
   280,  /* (366) database_kw_opt ::= */
   283,  /* (367) kwcolumn_opt ::= */
   283,  /* (368) kwcolumn_opt ::= COLUMNKW */
   285,  /* (369) vtabarglist ::= vtabarg */
   285,  /* (370) vtabarglist ::= vtabarglist COMMA vtabarg */
   286,  /* (371) vtabarg ::= vtabarg vtabargtoken */
   289,  /* (372) anylist ::= */
   289,  /* (373) anylist ::= anylist LP anylist RP */
   289,  /* (374) anylist ::= anylist ANY */
   254,  /* (375) with ::= */





};

/* For rule J, yyRuleInfoNRhs[J] contains the negative of the number
** of symbols on the right-hand side of that rule. */
static const signed char yyRuleInfoNRhs[] = {
   -1,  /* (0) explain ::= EXPLAIN */
   -3,  /* (1) explain ::= EXPLAIN QUERY PLAN */
................................................................................
    0,  /* (123) indexed_opt ::= */
   -3,  /* (124) indexed_opt ::= INDEXED BY nm */
   -2,  /* (125) indexed_opt ::= NOT INDEXED */
   -4,  /* (126) using_opt ::= USING LP idlist RP */
    0,  /* (127) using_opt ::= */
    0,  /* (128) orderby_opt ::= */
   -3,  /* (129) orderby_opt ::= ORDER BY sortlist */
   -4,  /* (130) sortlist ::= sortlist COMMA expr sortorder */
   -2,  /* (131) sortlist ::= expr sortorder */
   -1,  /* (132) sortorder ::= ASC */
   -1,  /* (133) sortorder ::= DESC */
    0,  /* (134) sortorder ::= */



    0,  /* (135) groupby_opt ::= */
   -3,  /* (136) groupby_opt ::= GROUP BY nexprlist */
    0,  /* (137) having_opt ::= */
   -2,  /* (138) having_opt ::= HAVING expr */
    0,  /* (139) limit_opt ::= */
   -2,  /* (140) limit_opt ::= LIMIT expr */
   -4,  /* (141) limit_opt ::= LIMIT expr OFFSET expr */
   -4,  /* (142) limit_opt ::= LIMIT expr COMMA expr */
   -6,  /* (143) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
    0,  /* (144) where_opt ::= */
   -2,  /* (145) where_opt ::= WHERE expr */
   -8,  /* (146) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
   -5,  /* (147) setlist ::= setlist COMMA nm EQ expr */
   -7,  /* (148) setlist ::= setlist COMMA LP idlist RP EQ expr */
   -3,  /* (149) setlist ::= nm EQ expr */
   -5,  /* (150) setlist ::= LP idlist RP EQ expr */
   -7,  /* (151) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
   -7,  /* (152) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
    0,  /* (153) upsert ::= */
  -11,  /* (154) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
   -8,  /* (155) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
   -4,  /* (156) upsert ::= ON CONFLICT DO NOTHING */
   -2,  /* (157) insert_cmd ::= INSERT orconf */
   -1,  /* (158) insert_cmd ::= REPLACE */
    0,  /* (159) idlist_opt ::= */
   -3,  /* (160) idlist_opt ::= LP idlist RP */
   -3,  /* (161) idlist ::= idlist COMMA nm */
   -1,  /* (162) idlist ::= nm */
   -3,  /* (163) expr ::= LP expr RP */
   -1,  /* (164) expr ::= ID|INDEXED */
   -1,  /* (165) expr ::= JOIN_KW */
   -3,  /* (166) expr ::= nm DOT nm */
   -5,  /* (167) expr ::= nm DOT nm DOT nm */
   -1,  /* (168) term ::= NULL|FLOAT|BLOB */
   -1,  /* (169) term ::= STRING */
   -1,  /* (170) term ::= INTEGER */
   -1,  /* (171) expr ::= VARIABLE */
   -3,  /* (172) expr ::= expr COLLATE ID|STRING */
   -6,  /* (173) expr ::= CAST LP expr AS typetoken RP */
   -5,  /* (174) expr ::= ID|INDEXED LP distinct exprlist RP */
   -4,  /* (175) expr ::= ID|INDEXED LP STAR RP */
   -6,  /* (176) expr ::= ID|INDEXED LP distinct exprlist RP over_clause */
   -5,  /* (177) expr ::= ID|INDEXED LP STAR RP over_clause */
   -1,  /* (178) term ::= CTIME_KW */
   -5,  /* (179) expr ::= LP nexprlist COMMA expr RP */
   -3,  /* (180) expr ::= expr AND expr */
   -3,  /* (181) expr ::= expr OR expr */
   -3,  /* (182) expr ::= expr LT|GT|GE|LE expr */
   -3,  /* (183) expr ::= expr EQ|NE expr */
   -3,  /* (184) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
   -3,  /* (185) expr ::= expr PLUS|MINUS expr */
   -3,  /* (186) expr ::= expr STAR|SLASH|REM expr */
   -3,  /* (187) expr ::= expr CONCAT expr */
   -2,  /* (188) likeop ::= NOT LIKE_KW|MATCH */
   -3,  /* (189) expr ::= expr likeop expr */
   -5,  /* (190) expr ::= expr likeop expr ESCAPE expr */
   -2,  /* (191) expr ::= expr ISNULL|NOTNULL */
   -3,  /* (192) expr ::= expr NOT NULL */
   -3,  /* (193) expr ::= expr IS expr */
   -4,  /* (194) expr ::= expr IS NOT expr */
   -2,  /* (195) expr ::= NOT expr */
   -2,  /* (196) expr ::= BITNOT expr */
   -2,  /* (197) expr ::= PLUS|MINUS expr */
   -1,  /* (198) between_op ::= BETWEEN */
   -2,  /* (199) between_op ::= NOT BETWEEN */
   -5,  /* (200) expr ::= expr between_op expr AND expr */
   -1,  /* (201) in_op ::= IN */
   -2,  /* (202) in_op ::= NOT IN */
   -5,  /* (203) expr ::= expr in_op LP exprlist RP */
   -3,  /* (204) expr ::= LP select RP */
   -5,  /* (205) expr ::= expr in_op LP select RP */
   -5,  /* (206) expr ::= expr in_op nm dbnm paren_exprlist */
   -4,  /* (207) expr ::= EXISTS LP select RP */
   -5,  /* (208) expr ::= CASE case_operand case_exprlist case_else END */
   -5,  /* (209) case_exprlist ::= case_exprlist WHEN expr THEN expr */
   -4,  /* (210) case_exprlist ::= WHEN expr THEN expr */
   -2,  /* (211) case_else ::= ELSE expr */
    0,  /* (212) case_else ::= */
   -1,  /* (213) case_operand ::= expr */
    0,  /* (214) case_operand ::= */
    0,  /* (215) exprlist ::= */
   -3,  /* (216) nexprlist ::= nexprlist COMMA expr */
   -1,  /* (217) nexprlist ::= expr */
    0,  /* (218) paren_exprlist ::= */
   -3,  /* (219) paren_exprlist ::= LP exprlist RP */
  -12,  /* (220) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
   -1,  /* (221) uniqueflag ::= UNIQUE */
    0,  /* (222) uniqueflag ::= */
    0,  /* (223) eidlist_opt ::= */
   -3,  /* (224) eidlist_opt ::= LP eidlist RP */
   -5,  /* (225) eidlist ::= eidlist COMMA nm collate sortorder */
   -3,  /* (226) eidlist ::= nm collate sortorder */
    0,  /* (227) collate ::= */
   -2,  /* (228) collate ::= COLLATE ID|STRING */
   -4,  /* (229) cmd ::= DROP INDEX ifexists fullname */
   -2,  /* (230) cmd ::= VACUUM vinto */
   -3,  /* (231) cmd ::= VACUUM nm vinto */
   -2,  /* (232) vinto ::= INTO expr */
    0,  /* (233) vinto ::= */
   -3,  /* (234) cmd ::= PRAGMA nm dbnm */
   -5,  /* (235) cmd ::= PRAGMA nm dbnm EQ nmnum */
   -6,  /* (236) cmd ::= PRAGMA nm dbnm LP nmnum RP */
   -5,  /* (237) cmd ::= PRAGMA nm dbnm EQ minus_num */
   -6,  /* (238) cmd ::= PRAGMA nm dbnm LP minus_num RP */
   -2,  /* (239) plus_num ::= PLUS INTEGER|FLOAT */
   -2,  /* (240) minus_num ::= MINUS INTEGER|FLOAT */
   -5,  /* (241) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
  -11,  /* (242) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
   -1,  /* (243) trigger_time ::= BEFORE|AFTER */
   -2,  /* (244) trigger_time ::= INSTEAD OF */
    0,  /* (245) trigger_time ::= */
   -1,  /* (246) trigger_event ::= DELETE|INSERT */
   -1,  /* (247) trigger_event ::= UPDATE */
   -3,  /* (248) trigger_event ::= UPDATE OF idlist */
    0,  /* (249) when_clause ::= */
   -2,  /* (250) when_clause ::= WHEN expr */
   -3,  /* (251) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
   -2,  /* (252) trigger_cmd_list ::= trigger_cmd SEMI */
   -3,  /* (253) trnm ::= nm DOT nm */
   -3,  /* (254) tridxby ::= INDEXED BY nm */
   -2,  /* (255) tridxby ::= NOT INDEXED */
   -8,  /* (256) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
   -8,  /* (257) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
   -6,  /* (258) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
   -3,  /* (259) trigger_cmd ::= scanpt select scanpt */
   -4,  /* (260) expr ::= RAISE LP IGNORE RP */
   -6,  /* (261) expr ::= RAISE LP raisetype COMMA nm RP */
   -1,  /* (262) raisetype ::= ROLLBACK */
   -1,  /* (263) raisetype ::= ABORT */
   -1,  /* (264) raisetype ::= FAIL */
   -4,  /* (265) cmd ::= DROP TRIGGER ifexists fullname */
   -6,  /* (266) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
   -3,  /* (267) cmd ::= DETACH database_kw_opt expr */
    0,  /* (268) key_opt ::= */
   -2,  /* (269) key_opt ::= KEY expr */
   -1,  /* (270) cmd ::= REINDEX */
   -3,  /* (271) cmd ::= REINDEX nm dbnm */
   -1,  /* (272) cmd ::= ANALYZE */
   -3,  /* (273) cmd ::= ANALYZE nm dbnm */
   -6,  /* (274) cmd ::= ALTER TABLE fullname RENAME TO nm */
   -7,  /* (275) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
   -1,  /* (276) add_column_fullname ::= fullname */
   -8,  /* (277) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
   -1,  /* (278) cmd ::= create_vtab */
   -4,  /* (279) cmd ::= create_vtab LP vtabarglist RP */
   -8,  /* (280) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
    0,  /* (281) vtabarg ::= */
   -1,  /* (282) vtabargtoken ::= ANY */
   -3,  /* (283) vtabargtoken ::= lp anylist RP */
   -1,  /* (284) lp ::= LP */
   -2,  /* (285) with ::= WITH wqlist */
   -3,  /* (286) with ::= WITH RECURSIVE wqlist */
   -6,  /* (287) wqlist ::= nm eidlist_opt AS LP select RP */
   -8,  /* (288) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
   -1,  /* (289) windowdefn_list ::= windowdefn */
   -3,  /* (290) windowdefn_list ::= windowdefn_list COMMA windowdefn */
   -5,  /* (291) windowdefn ::= nm AS LP window RP */
   -5,  /* (292) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
   -6,  /* (293) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
   -4,  /* (294) window ::= ORDER BY sortlist frame_opt */
   -5,  /* (295) window ::= nm ORDER BY sortlist frame_opt */
   -1,  /* (296) window ::= frame_opt */
   -2,  /* (297) window ::= nm frame_opt */
    0,  /* (298) frame_opt ::= */
   -3,  /* (299) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
   -6,  /* (300) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
   -1,  /* (301) range_or_rows ::= RANGE|ROWS|GROUPS */
   -1,  /* (302) frame_bound_s ::= frame_bound */
   -2,  /* (303) frame_bound_s ::= UNBOUNDED PRECEDING */
   -1,  /* (304) frame_bound_e ::= frame_bound */
   -2,  /* (305) frame_bound_e ::= UNBOUNDED FOLLOWING */
   -2,  /* (306) frame_bound ::= expr PRECEDING|FOLLOWING */
   -2,  /* (307) frame_bound ::= CURRENT ROW */
    0,  /* (308) frame_exclude_opt ::= */
   -2,  /* (309) frame_exclude_opt ::= EXCLUDE frame_exclude */
   -2,  /* (310) frame_exclude ::= NO OTHERS */
   -2,  /* (311) frame_exclude ::= CURRENT ROW */
   -1,  /* (312) frame_exclude ::= GROUP|TIES */
   -2,  /* (313) window_clause ::= WINDOW windowdefn_list */



   -5,  /* (314) over_clause ::= filter_opt OVER LP window RP */
   -3,  /* (315) over_clause ::= filter_opt OVER nm */
    0,  /* (316) filter_opt ::= */
   -5,  /* (317) filter_opt ::= FILTER LP WHERE expr RP */
   -1,  /* (318) input ::= cmdlist */
   -2,  /* (319) cmdlist ::= cmdlist ecmd */
   -1,  /* (320) cmdlist ::= ecmd */
   -1,  /* (321) ecmd ::= SEMI */
   -2,  /* (322) ecmd ::= cmdx SEMI */
   -2,  /* (323) ecmd ::= explain cmdx */
    0,  /* (324) trans_opt ::= */
   -1,  /* (325) trans_opt ::= TRANSACTION */
   -2,  /* (326) trans_opt ::= TRANSACTION nm */
   -1,  /* (327) savepoint_opt ::= SAVEPOINT */
    0,  /* (328) savepoint_opt ::= */
   -2,  /* (329) cmd ::= create_table create_table_args */
   -4,  /* (330) columnlist ::= columnlist COMMA columnname carglist */
   -2,  /* (331) columnlist ::= columnname carglist */
   -1,  /* (332) nm ::= ID|INDEXED */
   -1,  /* (333) nm ::= STRING */
   -1,  /* (334) nm ::= JOIN_KW */
   -1,  /* (335) typetoken ::= typename */
   -1,  /* (336) typename ::= ID|STRING */
   -1,  /* (337) signed ::= plus_num */
   -1,  /* (338) signed ::= minus_num */
   -2,  /* (339) carglist ::= carglist ccons */
    0,  /* (340) carglist ::= */
   -2,  /* (341) ccons ::= NULL onconf */
   -2,  /* (342) conslist_opt ::= COMMA conslist */
   -3,  /* (343) conslist ::= conslist tconscomma tcons */
   -1,  /* (344) conslist ::= tcons */
    0,  /* (345) tconscomma ::= */
   -1,  /* (346) defer_subclause_opt ::= defer_subclause */
   -1,  /* (347) resolvetype ::= raisetype */
   -1,  /* (348) selectnowith ::= oneselect */
   -1,  /* (349) oneselect ::= values */
   -2,  /* (350) sclp ::= selcollist COMMA */
   -1,  /* (351) as ::= ID|STRING */
   -1,  /* (352) expr ::= term */
   -1,  /* (353) likeop ::= LIKE_KW|MATCH */
   -1,  /* (354) exprlist ::= nexprlist */
   -1,  /* (355) nmnum ::= plus_num */
   -1,  /* (356) nmnum ::= nm */
   -1,  /* (357) nmnum ::= ON */
   -1,  /* (358) nmnum ::= DELETE */
   -1,  /* (359) nmnum ::= DEFAULT */
   -1,  /* (360) plus_num ::= INTEGER|FLOAT */
    0,  /* (361) foreach_clause ::= */
   -3,  /* (362) foreach_clause ::= FOR EACH ROW */
   -1,  /* (363) trnm ::= nm */
    0,  /* (364) tridxby ::= */
   -1,  /* (365) database_kw_opt ::= DATABASE */
    0,  /* (366) database_kw_opt ::= */
    0,  /* (367) kwcolumn_opt ::= */
   -1,  /* (368) kwcolumn_opt ::= COLUMNKW */
   -1,  /* (369) vtabarglist ::= vtabarg */
   -3,  /* (370) vtabarglist ::= vtabarglist COMMA vtabarg */
   -2,  /* (371) vtabarg ::= vtabarg vtabargtoken */
    0,  /* (372) anylist ::= */
   -4,  /* (373) anylist ::= anylist LP anylist RP */
   -2,  /* (374) anylist ::= anylist ANY */
    0,  /* (375) with ::= */
};

static void yy_accept(yyParser*);  /* Forward Declaration */

/*
** Perform a reduce action and the shift that must immediately
** follow the reduce.
................................................................................
      case 1: /* explain ::= EXPLAIN QUERY PLAN */
{ pParse->explain = 2; }
        break;
      case 2: /* cmdx ::= cmd */
{ sqlite3FinishCoding(pParse); }
        break;
      case 3: /* cmd ::= BEGIN transtype trans_opt */
{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy100);}
        break;
      case 4: /* transtype ::= */
{yymsp[1].minor.yy100 = TK_DEFERRED;}
        break;
      case 5: /* transtype ::= DEFERRED */
      case 6: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==6);
      case 7: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==7);
      case 301: /* range_or_rows ::= RANGE|ROWS|GROUPS */ yytestcase(yyruleno==301);
{yymsp[0].minor.yy100 = yymsp[0].major; /*A-overwrites-X*/}
        break;
      case 8: /* cmd ::= COMMIT|END trans_opt */
      case 9: /* cmd ::= ROLLBACK trans_opt */ yytestcase(yyruleno==9);
{sqlite3EndTransaction(pParse,yymsp[-1].major);}
        break;
      case 10: /* cmd ::= SAVEPOINT nm */
{
................................................................................
      case 12: /* cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */
{
  sqlite3Savepoint(pParse, SAVEPOINT_ROLLBACK, &yymsp[0].minor.yy0);
}
        break;
      case 13: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */
{
   sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy100,0,0,yymsp[-2].minor.yy100);
}
        break;
      case 14: /* createkw ::= CREATE */
{disableLookaside(pParse);}
        break;
      case 15: /* ifnotexists ::= */
      case 18: /* temp ::= */ yytestcase(yyruleno==18);
      case 21: /* table_options ::= */ yytestcase(yyruleno==21);
      case 43: /* autoinc ::= */ yytestcase(yyruleno==43);
      case 58: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==58);
      case 68: /* defer_subclause_opt ::= */ yytestcase(yyruleno==68);
      case 77: /* ifexists ::= */ yytestcase(yyruleno==77);
      case 94: /* distinct ::= */ yytestcase(yyruleno==94);
      case 227: /* collate ::= */ yytestcase(yyruleno==227);
{yymsp[1].minor.yy100 = 0;}
        break;
      case 16: /* ifnotexists ::= IF NOT EXISTS */
{yymsp[-2].minor.yy100 = 1;}
        break;
      case 17: /* temp ::= TEMP */
      case 44: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==44);
{yymsp[0].minor.yy100 = 1;}
        break;
      case 19: /* create_table_args ::= LP columnlist conslist_opt RP table_options */
{
  sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy100,0);
}
        break;
      case 20: /* create_table_args ::= AS select */
{
  sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy391);
  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy391);
}
        break;
      case 22: /* table_options ::= WITHOUT nm */
{
  if( yymsp[0].minor.yy0.n==5 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"rowid",5)==0 ){
    yymsp[-1].minor.yy100 = TF_WithoutRowid | TF_NoVisibleRowid;
  }else{
    yymsp[-1].minor.yy100 = 0;
    sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z);
  }
}
        break;
      case 23: /* columnname ::= nm typetoken */
{sqlite3AddColumn(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);}
        break;
................................................................................
        break;
      case 27: /* typename ::= typename ID|STRING */
{yymsp[-1].minor.yy0.n=yymsp[0].minor.yy0.n+(int)(yymsp[0].minor.yy0.z-yymsp[-1].minor.yy0.z);}
        break;
      case 28: /* scanpt ::= */
{
  assert( yyLookahead!=YYNOCODE );
  yymsp[1].minor.yy528 = yyLookaheadToken.z;
}
        break;
      case 29: /* scantok ::= */
{
  assert( yyLookahead!=YYNOCODE );
  yymsp[1].minor.yy0 = yyLookaheadToken;
}
        break;
      case 30: /* ccons ::= CONSTRAINT nm */
      case 63: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==63);
{pParse->constraintName = yymsp[0].minor.yy0;}
        break;
      case 31: /* ccons ::= DEFAULT scantok term */
{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy102,yymsp[-1].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
        break;
      case 32: /* ccons ::= DEFAULT LP expr RP */
{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy102,yymsp[-2].minor.yy0.z+1,yymsp[0].minor.yy0.z);}
        break;
      case 33: /* ccons ::= DEFAULT PLUS scantok term */
{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy102,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
        break;
      case 34: /* ccons ::= DEFAULT MINUS scantok term */
{
  Expr *p = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy102, 0);
  sqlite3AddDefaultValue(pParse,p,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);
}
        break;
      case 35: /* ccons ::= DEFAULT scantok ID|INDEXED */
{
  Expr *p = tokenExpr(pParse, TK_STRING, yymsp[0].minor.yy0);
  if( p ){
................................................................................
    sqlite3ExprIdToTrueFalse(p);
    testcase( p->op==TK_TRUEFALSE && sqlite3ExprTruthValue(p) );
  }
    sqlite3AddDefaultValue(pParse,p,yymsp[0].minor.yy0.z,yymsp[0].minor.yy0.z+yymsp[0].minor.yy0.n);
}
        break;
      case 36: /* ccons ::= NOT NULL onconf */
{sqlite3AddNotNull(pParse, yymsp[0].minor.yy100);}
        break;
      case 37: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */
{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy100,yymsp[0].minor.yy100,yymsp[-2].minor.yy100);}
        break;
      case 38: /* ccons ::= UNIQUE onconf */
{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy100,0,0,0,0,
                                   SQLITE_IDXTYPE_UNIQUE);}
        break;
      case 39: /* ccons ::= CHECK LP expr RP */
{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy102);}
        break;
      case 40: /* ccons ::= REFERENCES nm eidlist_opt refargs */
{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy94,yymsp[0].minor.yy100);}
        break;
      case 41: /* ccons ::= defer_subclause */
{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy100);}
        break;
      case 42: /* ccons ::= COLLATE ID|STRING */
{sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);}
        break;
      case 45: /* refargs ::= */
{ yymsp[1].minor.yy100 = OE_None*0x0101; /* EV: R-19803-45884 */}
        break;
      case 46: /* refargs ::= refargs refarg */
{ yymsp[-1].minor.yy100 = (yymsp[-1].minor.yy100 & ~yymsp[0].minor.yy199.mask) | yymsp[0].minor.yy199.value; }
        break;
      case 47: /* refarg ::= MATCH nm */
{ yymsp[-1].minor.yy199.value = 0;     yymsp[-1].minor.yy199.mask = 0x000000; }
        break;
      case 48: /* refarg ::= ON INSERT refact */
{ yymsp[-2].minor.yy199.value = 0;     yymsp[-2].minor.yy199.mask = 0x000000; }
        break;
      case 49: /* refarg ::= ON DELETE refact */
{ yymsp[-2].minor.yy199.value = yymsp[0].minor.yy100;     yymsp[-2].minor.yy199.mask = 0x0000ff; }
        break;
      case 50: /* refarg ::= ON UPDATE refact */
{ yymsp[-2].minor.yy199.value = yymsp[0].minor.yy100<<8;  yymsp[-2].minor.yy199.mask = 0x00ff00; }
        break;
      case 51: /* refact ::= SET NULL */
{ yymsp[-1].minor.yy100 = OE_SetNull;  /* EV: R-33326-45252 */}
        break;
      case 52: /* refact ::= SET DEFAULT */
{ yymsp[-1].minor.yy100 = OE_SetDflt;  /* EV: R-33326-45252 */}
        break;
      case 53: /* refact ::= CASCADE */
{ yymsp[0].minor.yy100 = OE_Cascade;  /* EV: R-33326-45252 */}
        break;
      case 54: /* refact ::= RESTRICT */
{ yymsp[0].minor.yy100 = OE_Restrict; /* EV: R-33326-45252 */}
        break;
      case 55: /* refact ::= NO ACTION */
{ yymsp[-1].minor.yy100 = OE_None;     /* EV: R-33326-45252 */}
        break;
      case 56: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
{yymsp[-2].minor.yy100 = 0;}
        break;
      case 57: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
      case 72: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==72);
      case 157: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==157);
{yymsp[-1].minor.yy100 = yymsp[0].minor.yy100;}
        break;
      case 59: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */
      case 76: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==76);
      case 199: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==199);
      case 202: /* in_op ::= NOT IN */ yytestcase(yyruleno==202);
      case 228: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==228);
{yymsp[-1].minor.yy100 = 1;}
        break;
      case 60: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
{yymsp[-1].minor.yy100 = 0;}
        break;
      case 62: /* tconscomma ::= COMMA */
{pParse->constraintName.n = 0;}
        break;
      case 64: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy94,yymsp[0].minor.yy100,yymsp[-2].minor.yy100,0);}
        break;
      case 65: /* tcons ::= UNIQUE LP sortlist RP onconf */
{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy94,yymsp[0].minor.yy100,0,0,0,0,
                                       SQLITE_IDXTYPE_UNIQUE);}
        break;
      case 66: /* tcons ::= CHECK LP expr RP onconf */
{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy102);}
        break;
      case 67: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
{
    sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy94, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy94, yymsp[-1].minor.yy100);
    sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy100);
}
        break;
      case 69: /* onconf ::= */
      case 71: /* orconf ::= */ yytestcase(yyruleno==71);
{yymsp[1].minor.yy100 = OE_Default;}
        break;
      case 70: /* onconf ::= ON CONFLICT resolvetype */
{yymsp[-2].minor.yy100 = yymsp[0].minor.yy100;}
        break;
      case 73: /* resolvetype ::= IGNORE */
{yymsp[0].minor.yy100 = OE_Ignore;}
        break;
      case 74: /* resolvetype ::= REPLACE */
      case 158: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==158);
{yymsp[0].minor.yy100 = OE_Replace;}
        break;
      case 75: /* cmd ::= DROP TABLE ifexists fullname */
{
  sqlite3DropTable(pParse, yymsp[0].minor.yy407, 0, yymsp[-1].minor.yy100);
}
        break;
      case 78: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
{
  sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy94, yymsp[0].minor.yy391, yymsp[-7].minor.yy100, yymsp[-5].minor.yy100);
}
        break;
      case 79: /* cmd ::= DROP VIEW ifexists fullname */
{
  sqlite3DropTable(pParse, yymsp[0].minor.yy407, 1, yymsp[-1].minor.yy100);
}
        break;
      case 80: /* cmd ::= select */
{
  SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0};
  sqlite3Select(pParse, yymsp[0].minor.yy391, &dest);
  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy391);
}
        break;
      case 81: /* select ::= WITH wqlist selectnowith */
{
  Select *p = yymsp[0].minor.yy391;
  if( p ){
    p->pWith = yymsp[-1].minor.yy243;
    parserDoubleLinkSelect(pParse, p);
  }else{
    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy243);
  }
  yymsp[-2].minor.yy391 = p;
}
        break;
      case 82: /* select ::= WITH RECURSIVE wqlist selectnowith */
{
  Select *p = yymsp[0].minor.yy391;
  if( p ){
    p->pWith = yymsp[-1].minor.yy243;
    parserDoubleLinkSelect(pParse, p);
  }else{
    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy243);
  }
  yymsp[-3].minor.yy391 = p;
}
        break;
      case 83: /* select ::= selectnowith */
{
  Select *p = yymsp[0].minor.yy391;
  if( p ){
    parserDoubleLinkSelect(pParse, p);
  }
  yymsp[0].minor.yy391 = p; /*A-overwrites-X*/
}
        break;
      case 84: /* selectnowith ::= selectnowith multiselect_op oneselect */
{
  Select *pRhs = yymsp[0].minor.yy391;
  Select *pLhs = yymsp[-2].minor.yy391;
  if( pRhs && pRhs->pPrior ){
    SrcList *pFrom;
    Token x;
    x.n = 0;
    parserDoubleLinkSelect(pParse, pRhs);
    pFrom = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&x,pRhs,0,0);
    pRhs = sqlite3SelectNew(pParse,0,pFrom,0,0,0,0,0,0);
  }
  if( pRhs ){
    pRhs->op = (u8)yymsp[-1].minor.yy100;
    pRhs->pPrior = pLhs;
    if( ALWAYS(pLhs) ) pLhs->selFlags &= ~SF_MultiValue;
    pRhs->selFlags &= ~SF_MultiValue;
    if( yymsp[-1].minor.yy100!=TK_ALL ) pParse->hasCompound = 1;
  }else{
    sqlite3SelectDelete(pParse->db, pLhs);
  }
  yymsp[-2].minor.yy391 = pRhs;
}
        break;
      case 85: /* multiselect_op ::= UNION */
      case 87: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==87);
{yymsp[0].minor.yy100 = yymsp[0].major; /*A-overwrites-OP*/}
        break;
      case 86: /* multiselect_op ::= UNION ALL */
{yymsp[-1].minor.yy100 = TK_ALL;}
        break;
      case 88: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
{
  yymsp[-8].minor.yy391 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy94,yymsp[-5].minor.yy407,yymsp[-4].minor.yy102,yymsp[-3].minor.yy94,yymsp[-2].minor.yy102,yymsp[-1].minor.yy94,yymsp[-7].minor.yy100,yymsp[0].minor.yy102);
}
        break;
      case 89: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
{
  yymsp[-9].minor.yy391 = sqlite3SelectNew(pParse,yymsp[-7].minor.yy94,yymsp[-6].minor.yy407,yymsp[-5].minor.yy102,yymsp[-4].minor.yy94,yymsp[-3].minor.yy102,yymsp[-1].minor.yy94,yymsp[-8].minor.yy100,yymsp[0].minor.yy102);
  if( yymsp[-9].minor.yy391 ){
    yymsp[-9].minor.yy391->pWinDefn = yymsp[-2].minor.yy379;
  }else{
    sqlite3WindowListDelete(pParse->db, yymsp[-2].minor.yy379);
  }
}
        break;
      case 90: /* values ::= VALUES LP nexprlist RP */
{
  yymsp[-3].minor.yy391 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy94,0,0,0,0,0,SF_Values,0);
}
        break;
      case 91: /* values ::= values COMMA LP nexprlist RP */
{
  Select *pRight, *pLeft = yymsp[-4].minor.yy391;
  pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy94,0,0,0,0,0,SF_Values|SF_MultiValue,0);
  if( ALWAYS(pLeft) ) pLeft->selFlags &= ~SF_MultiValue;
  if( pRight ){
    pRight->op = TK_ALL;
    pRight->pPrior = pLeft;
    yymsp[-4].minor.yy391 = pRight;
  }else{
    yymsp[-4].minor.yy391 = pLeft;
  }
}
        break;
      case 92: /* distinct ::= DISTINCT */
{yymsp[0].minor.yy100 = SF_Distinct;}
        break;
      case 93: /* distinct ::= ALL */
{yymsp[0].minor.yy100 = SF_All;}
        break;
      case 95: /* sclp ::= */
      case 128: /* orderby_opt ::= */ yytestcase(yyruleno==128);
      case 135: /* groupby_opt ::= */ yytestcase(yyruleno==135);
      case 215: /* exprlist ::= */ yytestcase(yyruleno==215);
      case 218: /* paren_exprlist ::= */ yytestcase(yyruleno==218);
      case 223: /* eidlist_opt ::= */ yytestcase(yyruleno==223);
{yymsp[1].minor.yy94 = 0;}
        break;
      case 96: /* selcollist ::= sclp scanpt expr scanpt as */
{
   yymsp[-4].minor.yy94 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy94, yymsp[-2].minor.yy102);
   if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy94, &yymsp[0].minor.yy0, 1);
   sqlite3ExprListSetSpan(pParse,yymsp[-4].minor.yy94,yymsp[-3].minor.yy528,yymsp[-1].minor.yy528);
}
        break;
      case 97: /* selcollist ::= sclp scanpt STAR */
{
  Expr *p = sqlite3Expr(pParse->db, TK_ASTERISK, 0);
  yymsp[-2].minor.yy94 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy94, p);
}
        break;
      case 98: /* selcollist ::= sclp scanpt nm DOT STAR */
{
  Expr *pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0);
  Expr *pLeft = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight);
  yymsp[-4].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy94, pDot);
}
        break;
      case 99: /* as ::= AS nm */
      case 110: /* dbnm ::= DOT nm */ yytestcase(yyruleno==110);
      case 239: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==239);
      case 240: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==240);
{yymsp[-1].minor.yy0 = yymsp[0].minor.yy0;}
        break;
      case 101: /* from ::= */
{yymsp[1].minor.yy407 = sqlite3DbMallocZero(pParse->db, sizeof(*yymsp[1].minor.yy407));}
        break;
      case 102: /* from ::= FROM seltablist */
{
  yymsp[-1].minor.yy407 = yymsp[0].minor.yy407;
  sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy407);
}
        break;
      case 103: /* stl_prefix ::= seltablist joinop */
{
   if( ALWAYS(yymsp[-1].minor.yy407 && yymsp[-1].minor.yy407->nSrc>0) ) yymsp[-1].minor.yy407->a[yymsp[-1].minor.yy407->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy100;
}
        break;
      case 104: /* stl_prefix ::= */
{yymsp[1].minor.yy407 = 0;}
        break;
      case 105: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
{
  yymsp[-6].minor.yy407 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy407,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy102,yymsp[0].minor.yy76);
  sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy407, &yymsp[-2].minor.yy0);
}
        break;
      case 106: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
{
  yymsp[-8].minor.yy407 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy407,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy102,yymsp[0].minor.yy76);
  sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy407, yymsp[-4].minor.yy94);
}
        break;
      case 107: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */
{
    yymsp[-6].minor.yy407 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy407,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy391,yymsp[-1].minor.yy102,yymsp[0].minor.yy76);
  }
        break;
      case 108: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
{
    if( yymsp[-6].minor.yy407==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy102==0 && yymsp[0].minor.yy76==0 ){
      yymsp[-6].minor.yy407 = yymsp[-4].minor.yy407;
    }else if( yymsp[-4].minor.yy407->nSrc==1 ){
      yymsp[-6].minor.yy407 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy407,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy102,yymsp[0].minor.yy76);
      if( yymsp[-6].minor.yy407 ){
        struct SrcList_item *pNew = &yymsp[-6].minor.yy407->a[yymsp[-6].minor.yy407->nSrc-1];
        struct SrcList_item *pOld = yymsp[-4].minor.yy407->a;
        pNew->zName = pOld->zName;
        pNew->zDatabase = pOld->zDatabase;
        pNew->pSelect = pOld->pSelect;
        if( pOld->fg.isTabFunc ){
          pNew->u1.pFuncArg = pOld->u1.pFuncArg;
          pOld->u1.pFuncArg = 0;
          pOld->fg.isTabFunc = 0;
          pNew->fg.isTabFunc = 1;
        }
        pOld->zName = pOld->zDatabase = 0;
        pOld->pSelect = 0;
      }
      sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy407);
    }else{
      Select *pSubquery;
      sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy407);
      pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy407,0,0,0,0,SF_NestedFrom,0);
      yymsp[-6].minor.yy407 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy407,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy102,yymsp[0].minor.yy76);
    }
  }
        break;
      case 109: /* dbnm ::= */
      case 123: /* indexed_opt ::= */ yytestcase(yyruleno==123);
{yymsp[1].minor.yy0.z=0; yymsp[1].minor.yy0.n=0;}
        break;
      case 111: /* fullname ::= nm */
{
  yylhsminor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0);
  if( IN_RENAME_OBJECT && yylhsminor.yy407 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy407->a[0].zName, &yymsp[0].minor.yy0);
}
  yymsp[0].minor.yy407 = yylhsminor.yy407;
        break;
      case 112: /* fullname ::= nm DOT nm */
{
  yylhsminor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0);
  if( IN_RENAME_OBJECT && yylhsminor.yy407 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy407->a[0].zName, &yymsp[0].minor.yy0);
}
  yymsp[-2].minor.yy407 = yylhsminor.yy407;
        break;
      case 113: /* xfullname ::= nm */
{yymsp[0].minor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0); /*A-overwrites-X*/}
        break;
      case 114: /* xfullname ::= nm DOT nm */
{yymsp[-2].minor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 115: /* xfullname ::= nm DOT nm AS nm */
{
   yymsp[-4].minor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,&yymsp[-2].minor.yy0); /*A-overwrites-X*/
   if( yymsp[-4].minor.yy407 ) yymsp[-4].minor.yy407->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
}
        break;
      case 116: /* xfullname ::= nm AS nm */
{  
   yymsp[-2].minor.yy407 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,0); /*A-overwrites-X*/
   if( yymsp[-2].minor.yy407 ) yymsp[-2].minor.yy407->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
}
        break;
      case 117: /* joinop ::= COMMA|JOIN */
{ yymsp[0].minor.yy100 = JT_INNER; }
        break;
      case 118: /* joinop ::= JOIN_KW JOIN */
{yymsp[-1].minor.yy100 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0);  /*X-overwrites-A*/}
        break;
      case 119: /* joinop ::= JOIN_KW nm JOIN */
{yymsp[-2].minor.yy100 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/}
        break;
      case 120: /* joinop ::= JOIN_KW nm nm JOIN */
{yymsp[-3].minor.yy100 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/}
        break;
      case 121: /* on_opt ::= ON expr */
      case 138: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==138);
      case 145: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==145);
      case 211: /* case_else ::= ELSE expr */ yytestcase(yyruleno==211);
      case 232: /* vinto ::= INTO expr */ yytestcase(yyruleno==232);
{yymsp[-1].minor.yy102 = yymsp[0].minor.yy102;}
        break;
      case 122: /* on_opt ::= */
      case 137: /* having_opt ::= */ yytestcase(yyruleno==137);
      case 139: /* limit_opt ::= */ yytestcase(yyruleno==139);
      case 144: /* where_opt ::= */ yytestcase(yyruleno==144);
      case 212: /* case_else ::= */ yytestcase(yyruleno==212);
      case 214: /* case_operand ::= */ yytestcase(yyruleno==214);
      case 233: /* vinto ::= */ yytestcase(yyruleno==233);
{yymsp[1].minor.yy102 = 0;}
        break;
      case 124: /* indexed_opt ::= INDEXED BY nm */
{yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;}
        break;
      case 125: /* indexed_opt ::= NOT INDEXED */
{yymsp[-1].minor.yy0.z=0; yymsp[-1].minor.yy0.n=1;}
        break;
      case 126: /* using_opt ::= USING LP idlist RP */
{yymsp[-3].minor.yy76 = yymsp[-1].minor.yy76;}
        break;
      case 127: /* using_opt ::= */
      case 159: /* idlist_opt ::= */ yytestcase(yyruleno==159);
{yymsp[1].minor.yy76 = 0;}
        break;
      case 129: /* orderby_opt ::= ORDER BY sortlist */
      case 136: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==136);
{yymsp[-2].minor.yy94 = yymsp[0].minor.yy94;}
        break;
      case 130: /* sortlist ::= sortlist COMMA expr sortorder */
{
  yymsp[-3].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy94,yymsp[-1].minor.yy102);
  sqlite3ExprListSetSortOrder(yymsp[-3].minor.yy94,yymsp[0].minor.yy100);
}
        break;
      case 131: /* sortlist ::= expr sortorder */
{
  yymsp[-1].minor.yy94 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy102); /*A-overwrites-Y*/
  sqlite3ExprListSetSortOrder(yymsp[-1].minor.yy94,yymsp[0].minor.yy100);
}
        break;
      case 132: /* sortorder ::= ASC */
{yymsp[0].minor.yy100 = SQLITE_SO_ASC;}
        break;
      case 133: /* sortorder ::= DESC */
{yymsp[0].minor.yy100 = SQLITE_SO_DESC;}
        break;
      case 134: /* sortorder ::= */

{yymsp[1].minor.yy100 = SQLITE_SO_UNDEFINED;}
        break;






      case 140: /* limit_opt ::= LIMIT expr */
{yymsp[-1].minor.yy102 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy102,0);}
        break;
      case 141: /* limit_opt ::= LIMIT expr OFFSET expr */
{yymsp[-3].minor.yy102 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[-2].minor.yy102,yymsp[0].minor.yy102);}
        break;
      case 142: /* limit_opt ::= LIMIT expr COMMA expr */
{yymsp[-3].minor.yy102 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy102,yymsp[-2].minor.yy102);}
        break;
      case 143: /* cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
{
  sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy407, &yymsp[-1].minor.yy0);
  sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy407,yymsp[0].minor.yy102,0,0);
}
        break;
      case 146: /* cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
{
  sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy407, &yymsp[-3].minor.yy0);
  sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy94,"set list"); 
  sqlite3Update(pParse,yymsp[-4].minor.yy407,yymsp[-1].minor.yy94,yymsp[0].minor.yy102,yymsp[-5].minor.yy100,0,0,0);

}
        break;
      case 147: /* setlist ::= setlist COMMA nm EQ expr */
{
  yymsp[-4].minor.yy94 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy94, yymsp[0].minor.yy102);
  sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy94, &yymsp[-2].minor.yy0, 1);
}
        break;
      case 148: /* setlist ::= setlist COMMA LP idlist RP EQ expr */
{
  yymsp[-6].minor.yy94 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy94, yymsp[-3].minor.yy76, yymsp[0].minor.yy102);
}
        break;
      case 149: /* setlist ::= nm EQ expr */
{
  yylhsminor.yy94 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy102);
  sqlite3ExprListSetName(pParse, yylhsminor.yy94, &yymsp[-2].minor.yy0, 1);
}
  yymsp[-2].minor.yy94 = yylhsminor.yy94;
        break;
      case 150: /* setlist ::= LP idlist RP EQ expr */
{
  yymsp[-4].minor.yy94 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy76, yymsp[0].minor.yy102);
}
        break;
      case 151: /* cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
{
  sqlite3Insert(pParse, yymsp[-3].minor.yy407, yymsp[-1].minor.yy391, yymsp[-2].minor.yy76, yymsp[-5].minor.yy100, yymsp[0].minor.yy95);

}
        break;
      case 152: /* cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
{
  sqlite3Insert(pParse, yymsp[-3].minor.yy407, 0, yymsp[-2].minor.yy76, yymsp[-5].minor.yy100, 0);
}
        break;
      case 153: /* upsert ::= */
{ yymsp[1].minor.yy95 = 0; }
        break;
      case 154: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
{ yymsp[-10].minor.yy95 = sqlite3UpsertNew(pParse->db,yymsp[-7].minor.yy94,yymsp[-5].minor.yy102,yymsp[-1].minor.yy94,yymsp[0].minor.yy102);}

        break;
      case 155: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
{ yymsp[-7].minor.yy95 = sqlite3UpsertNew(pParse->db,yymsp[-4].minor.yy94,yymsp[-2].minor.yy102,0,0); }
        break;
      case 156: /* upsert ::= ON CONFLICT DO NOTHING */
{ yymsp[-3].minor.yy95 = sqlite3UpsertNew(pParse->db,0,0,0,0); }
        break;
      case 160: /* idlist_opt ::= LP idlist RP */
{yymsp[-2].minor.yy76 = yymsp[-1].minor.yy76;}
        break;
      case 161: /* idlist ::= idlist COMMA nm */
{yymsp[-2].minor.yy76 = sqlite3IdListAppend(pParse,yymsp[-2].minor.yy76,&yymsp[0].minor.yy0);}
        break;
      case 162: /* idlist ::= nm */
{yymsp[0].minor.yy76 = sqlite3IdListAppend(pParse,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/}
        break;
      case 163: /* expr ::= LP expr RP */
{yymsp[-2].minor.yy102 = yymsp[-1].minor.yy102;}
        break;
      case 164: /* expr ::= ID|INDEXED */
      case 165: /* expr ::= JOIN_KW */ yytestcase(yyruleno==165);
{yymsp[0].minor.yy102=tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 166: /* expr ::= nm DOT nm */
{
  Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1);
  if( IN_RENAME_OBJECT ){
    sqlite3RenameTokenMap(pParse, (void*)temp2, &yymsp[0].minor.yy0);
    sqlite3RenameTokenMap(pParse, (void*)temp1, &yymsp[-2].minor.yy0);
  }
  yylhsminor.yy102 = sqlite3PExpr(pParse, TK_DOT, temp1, temp2);
}
  yymsp[-2].minor.yy102 = yylhsminor.yy102;
        break;
      case 167: /* expr ::= nm DOT nm DOT nm */
{
  Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-4].minor.yy0, 1);
  Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
  Expr *temp3 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1);
  Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3);
  if( IN_RENAME_OBJECT ){
    sqlite3RenameTokenMap(pParse, (void*)temp3, &yymsp[0].minor.yy0);
    sqlite3RenameTokenMap(pParse, (void*)temp2, &yymsp[-2].minor.yy0);
  }
  yylhsminor.yy102 = sqlite3PExpr(pParse, TK_DOT, temp1, temp4);
}
  yymsp[-4].minor.yy102 = yylhsminor.yy102;
        break;
      case 168: /* term ::= NULL|FLOAT|BLOB */
      case 169: /* term ::= STRING */ yytestcase(yyruleno==169);
{yymsp[0].minor.yy102=tokenExpr(pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/}
        break;
      case 170: /* term ::= INTEGER */
{
  yylhsminor.yy102 = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1);
}
  yymsp[0].minor.yy102 = yylhsminor.yy102;
        break;
      case 171: /* expr ::= VARIABLE */
{
  if( !(yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1])) ){
    u32 n = yymsp[0].minor.yy0.n;
    yymsp[0].minor.yy102 = tokenExpr(pParse, TK_VARIABLE, yymsp[0].minor.yy0);
    sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy102, n);
  }else{
    /* When doing a nested parse, one can include terms in an expression
    ** that look like this:   #1 #2 ...  These terms refer to registers
    ** in the virtual machine.  #N is the N-th register. */
    Token t = yymsp[0].minor.yy0; /*A-overwrites-X*/
    assert( t.n>=2 );
    if( pParse->nested==0 ){
      sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &t);
      yymsp[0].minor.yy102 = 0;
    }else{
      yymsp[0].minor.yy102 = sqlite3PExpr(pParse, TK_REGISTER, 0, 0);
      if( yymsp[0].minor.yy102 ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy102->iTable);
    }
  }
}
        break;
      case 172: /* expr ::= expr COLLATE ID|STRING */
{
  yymsp[-2].minor.yy102 = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy102, &yymsp[0].minor.yy0, 1);
}
        break;
      case 173: /* expr ::= CAST LP expr AS typetoken RP */
{
  yymsp[-5].minor.yy102 = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1);
  sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy102, yymsp[-3].minor.yy102, 0);
}
        break;
      case 174: /* expr ::= ID|INDEXED LP distinct exprlist RP */
{
  yylhsminor.yy102 = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy94, &yymsp[-4].minor.yy0, yymsp[-2].minor.yy100);
}
  yymsp[-4].minor.yy102 = yylhsminor.yy102;
        break;
      case 175: /* expr ::= ID|INDEXED LP STAR RP */
{
  yylhsminor.yy102 = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0, 0);
}
  yymsp[-3].minor.yy102 = yylhsminor.yy102;
        break;
      case 176: /* expr ::= ID|INDEXED LP distinct exprlist RP over_clause */
{
  yylhsminor.yy102 = sqlite3ExprFunction(pParse, yymsp[-2].minor.yy94, &yymsp[-5].minor.yy0, yymsp[-3].minor.yy100);
  sqlite3WindowAttach(pParse, yylhsminor.yy102, yymsp[0].minor.yy379);
}
  yymsp[-5].minor.yy102 = yylhsminor.yy102;
        break;
      case 177: /* expr ::= ID|INDEXED LP STAR RP over_clause */
{
  yylhsminor.yy102 = sqlite3ExprFunction(pParse, 0, &yymsp[-4].minor.yy0, 0);
  sqlite3WindowAttach(pParse, yylhsminor.yy102, yymsp[0].minor.yy379);
}
  yymsp[-4].minor.yy102 = yylhsminor.yy102;
        break;
      case 178: /* term ::= CTIME_KW */
{
  yylhsminor.yy102 = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0, 0);
}
  yymsp[0].minor.yy102 = yylhsminor.yy102;
        break;
      case 179: /* expr ::= LP nexprlist COMMA expr RP */
{
  ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy94, yymsp[-1].minor.yy102);
  yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_VECTOR, 0, 0);
  if( yymsp[-4].minor.yy102 ){
    yymsp[-4].minor.yy102->x.pList = pList;
  }else{
    sqlite3ExprListDelete(pParse->db, pList);
  }
}
        break;
      case 180: /* expr ::= expr AND expr */
{yymsp[-2].minor.yy102=sqlite3ExprAnd(pParse,yymsp[-2].minor.yy102,yymsp[0].minor.yy102);}
        break;
      case 181: /* expr ::= expr OR expr */
      case 182: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==182);
      case 183: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==183);
      case 184: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==184);
      case 185: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==185);
      case 186: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==186);
      case 187: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==187);
{yymsp[-2].minor.yy102=sqlite3PExpr(pParse,yymsp[-1].major,yymsp[-2].minor.yy102,yymsp[0].minor.yy102);}
        break;
      case 188: /* likeop ::= NOT LIKE_KW|MATCH */
{yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.n|=0x80000000; /*yymsp[-1].minor.yy0-overwrite-yymsp[0].minor.yy0*/}
        break;
      case 189: /* expr ::= expr likeop expr */
{
  ExprList *pList;
  int bNot = yymsp[-1].minor.yy0.n & 0x80000000;
  yymsp[-1].minor.yy0.n &= 0x7fffffff;
  pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy102);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy102);
  yymsp[-2].minor.yy102 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0, 0);
  if( bNot ) yymsp[-2].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-2].minor.yy102, 0);
  if( yymsp[-2].minor.yy102 ) yymsp[-2].minor.yy102->flags |= EP_InfixFunc;
}
        break;
      case 190: /* expr ::= expr likeop expr ESCAPE expr */
{
  ExprList *pList;
  int bNot = yymsp[-3].minor.yy0.n & 0x80000000;
  yymsp[-3].minor.yy0.n &= 0x7fffffff;
  pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy102);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy102);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy102);
  yymsp[-4].minor.yy102 = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0, 0);
  if( bNot ) yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy102, 0);
  if( yymsp[-4].minor.yy102 ) yymsp[-4].minor.yy102->flags |= EP_InfixFunc;
}
        break;
      case 191: /* expr ::= expr ISNULL|NOTNULL */
{yymsp[-1].minor.yy102 = sqlite3PExpr(pParse,yymsp[0].major,yymsp[-1].minor.yy102,0);}
        break;
      case 192: /* expr ::= expr NOT NULL */
{yymsp[-2].minor.yy102 = sqlite3PExpr(pParse,TK_NOTNULL,yymsp[-2].minor.yy102,0);}
        break;
      case 193: /* expr ::= expr IS expr */
{
  yymsp[-2].minor.yy102 = sqlite3PExpr(pParse,TK_IS,yymsp[-2].minor.yy102,yymsp[0].minor.yy102);
  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy102, yymsp[-2].minor.yy102, TK_ISNULL);
}
        break;
      case 194: /* expr ::= expr IS NOT expr */
{
  yymsp[-3].minor.yy102 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-3].minor.yy102,yymsp[0].minor.yy102);
  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy102, yymsp[-3].minor.yy102, TK_NOTNULL);
}
        break;
      case 195: /* expr ::= NOT expr */
      case 196: /* expr ::= BITNOT expr */ yytestcase(yyruleno==196);
{yymsp[-1].minor.yy102 = sqlite3PExpr(pParse, yymsp[-1].major, yymsp[0].minor.yy102, 0);/*A-overwrites-B*/}
        break;
      case 197: /* expr ::= PLUS|MINUS expr */
{
  yymsp[-1].minor.yy102 = sqlite3PExpr(pParse, yymsp[-1].major==TK_PLUS ? TK_UPLUS : TK_UMINUS, yymsp[0].minor.yy102, 0);
  /*A-overwrites-B*/
}
        break;
      case 198: /* between_op ::= BETWEEN */
      case 201: /* in_op ::= IN */ yytestcase(yyruleno==201);
{yymsp[0].minor.yy100 = 0;}
        break;
      case 200: /* expr ::= expr between_op expr AND expr */
{
  ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy102);
  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy102);
  yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy102, 0);
  if( yymsp[-4].minor.yy102 ){
    yymsp[-4].minor.yy102->x.pList = pList;
  }else{
    sqlite3ExprListDelete(pParse->db, pList);
  } 
  if( yymsp[-3].minor.yy100 ) yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy102, 0);
}
        break;
      case 203: /* expr ::= expr in_op LP exprlist RP */
{
    if( yymsp[-1].minor.yy94==0 ){
      /* Expressions of the form
      **
      **      expr1 IN ()
      **      expr1 NOT IN ()
      **
      ** simplify to constants 0 (false) and 1 (true), respectively,
      ** regardless of the value of expr1.
      */
      sqlite3ExprUnmapAndDelete(pParse, yymsp[-4].minor.yy102);
      yymsp[-4].minor.yy102 = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[yymsp[-3].minor.yy100],1);
    }else if( yymsp[-1].minor.yy94->nExpr==1 ){
      /* Expressions of the form:
      **
      **      expr1 IN (?1)
      **      expr1 NOT IN (?2)
      **
      ** with exactly one value on the RHS can be simplified to something
      ** like this:
      **
      **      expr1 == ?1
      **      expr1 <> ?2
      **
      ** But, the RHS of the == or <> is marked with the EP_Generic flag
      ** so that it may not contribute to the computation of comparison
      ** affinity or the collating sequence to use for comparison.  Otherwise,
      ** the semantics would be subtly different from IN or NOT IN.
      */
      Expr *pRHS = yymsp[-1].minor.yy94->a[0].pExpr;
      yymsp[-1].minor.yy94->a[0].pExpr = 0;
      sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy94);
      /* pRHS cannot be NULL because a malloc error would have been detected
      ** before now and control would have never reached this point */
      if( ALWAYS(pRHS) ){
        pRHS->flags &= ~EP_Collate;
        pRHS->flags |= EP_Generic;
      }
      yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, yymsp[-3].minor.yy100 ? TK_NE : TK_EQ, yymsp[-4].minor.yy102, pRHS);
    }else{
      yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy102, 0);
      if( yymsp[-4].minor.yy102 ){
        yymsp[-4].minor.yy102->x.pList = yymsp[-1].minor.yy94;
        sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy102);
      }else{
        sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy94);
      }
      if( yymsp[-3].minor.yy100 ) yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy102, 0);
    }
  }
        break;
      case 204: /* expr ::= LP select RP */
{
    yymsp[-2].minor.yy102 = sqlite3PExpr(pParse, TK_SELECT, 0, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy102, yymsp[-1].minor.yy391);
  }
        break;
      case 205: /* expr ::= expr in_op LP select RP */
{
    yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy102, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy102, yymsp[-1].minor.yy391);
    if( yymsp[-3].minor.yy100 ) yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy102, 0);
  }
        break;
      case 206: /* expr ::= expr in_op nm dbnm paren_exprlist */
{
    SrcList *pSrc = sqlite3SrcListAppend(pParse, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);
    Select *pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0);
    if( yymsp[0].minor.yy94 )  sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy94);
    yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy102, 0);
    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy102, pSelect);
    if( yymsp[-3].minor.yy100 ) yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy102, 0);
  }
        break;
      case 207: /* expr ::= EXISTS LP select RP */
{
    Expr *p;
    p = yymsp[-3].minor.yy102 = sqlite3PExpr(pParse, TK_EXISTS, 0, 0);
    sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy391);
  }
        break;
      case 208: /* expr ::= CASE case_operand case_exprlist case_else END */
{
  yymsp[-4].minor.yy102 = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy102, 0);
  if( yymsp[-4].minor.yy102 ){
    yymsp[-4].minor.yy102->x.pList = yymsp[-1].minor.yy102 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy94,yymsp[-1].minor.yy102) : yymsp[-2].minor.yy94;

    sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy102);
  }else{
    sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy94);
    sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy102);
  }
}
        break;
      case 209: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */
{
  yymsp[-4].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy94, yymsp[-2].minor.yy102);
  yymsp[-4].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy94, yymsp[0].minor.yy102);
}
        break;
      case 210: /* case_exprlist ::= WHEN expr THEN expr */
{
  yymsp[-3].minor.yy94 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy102);
  yymsp[-3].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy94, yymsp[0].minor.yy102);
}
        break;
      case 213: /* case_operand ::= expr */
{yymsp[0].minor.yy102 = yymsp[0].minor.yy102; /*A-overwrites-X*/}

        break;
      case 216: /* nexprlist ::= nexprlist COMMA expr */
{yymsp[-2].minor.yy94 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy94,yymsp[0].minor.yy102);}
        break;
      case 217: /* nexprlist ::= expr */
{yymsp[0].minor.yy94 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy102); /*A-overwrites-Y*/}
        break;
      case 219: /* paren_exprlist ::= LP exprlist RP */
      case 224: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==224);
{yymsp[-2].minor.yy94 = yymsp[-1].minor.yy94;}
        break;
      case 220: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
{
  sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, 
                     sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy94, yymsp[-10].minor.yy100,
                      &yymsp[-11].minor.yy0, yymsp[0].minor.yy102, SQLITE_SO_ASC, yymsp[-8].minor.yy100, SQLITE_IDXTYPE_APPDEF);
  if( IN_RENAME_OBJECT && pParse->pNewIndex ){
    sqlite3RenameTokenMap(pParse, pParse->pNewIndex->zName, &yymsp[-4].minor.yy0);
  }
}
        break;
      case 221: /* uniqueflag ::= UNIQUE */
      case 263: /* raisetype ::= ABORT */ yytestcase(yyruleno==263);
{yymsp[0].minor.yy100 = OE_Abort;}
        break;
      case 222: /* uniqueflag ::= */
{yymsp[1].minor.yy100 = OE_None;}
        break;
      case 225: /* eidlist ::= eidlist COMMA nm collate sortorder */
{
  yymsp[-4].minor.yy94 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy94, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy100, yymsp[0].minor.yy100);
}
        break;
      case 226: /* eidlist ::= nm collate sortorder */
{
  yymsp[-2].minor.yy94 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy100, yymsp[0].minor.yy100); /*A-overwrites-Y*/
}
        break;
      case 229: /* cmd ::= DROP INDEX ifexists fullname */
{sqlite3DropIndex(pParse, yymsp[0].minor.yy407, yymsp[-1].minor.yy100);}
        break;
      case 230: /* cmd ::= VACUUM vinto */
{sqlite3Vacuum(pParse,0,yymsp[0].minor.yy102);}
        break;
      case 231: /* cmd ::= VACUUM nm vinto */
{sqlite3Vacuum(pParse,&yymsp[-1].minor.yy0,yymsp[0].minor.yy102);}
        break;
      case 234: /* cmd ::= PRAGMA nm dbnm */
{sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);}
        break;
      case 235: /* cmd ::= PRAGMA nm dbnm EQ nmnum */
{sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);}
        break;
      case 236: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */
{sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);}
        break;
      case 237: /* cmd ::= PRAGMA nm dbnm EQ minus_num */
{sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);}
        break;
      case 238: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */
{sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);}
        break;
      case 241: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
{
  Token all;
  all.z = yymsp[-3].minor.yy0.z;
  all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n;
  sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy11, &all);
}
        break;
      case 242: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
{
  sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy100, yymsp[-4].minor.yy298.a, yymsp[-4].minor.yy298.b, yymsp[-2].minor.yy407, yymsp[0].minor.yy102, yymsp[-10].minor.yy100, yymsp[-8].minor.yy100);
  yymsp[-10].minor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); /*A-overwrites-T*/
}
        break;
      case 243: /* trigger_time ::= BEFORE|AFTER */
{ yymsp[0].minor.yy100 = yymsp[0].major; /*A-overwrites-X*/ }
        break;
      case 244: /* trigger_time ::= INSTEAD OF */
{ yymsp[-1].minor.yy100 = TK_INSTEAD;}
        break;
      case 245: /* trigger_time ::= */
{ yymsp[1].minor.yy100 = TK_BEFORE; }
        break;
      case 246: /* trigger_event ::= DELETE|INSERT */
      case 247: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==247);
{yymsp[0].minor.yy298.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy298.b = 0;}
        break;
      case 248: /* trigger_event ::= UPDATE OF idlist */
{yymsp[-2].minor.yy298.a = TK_UPDATE; yymsp[-2].minor.yy298.b = yymsp[0].minor.yy76;}
        break;
      case 249: /* when_clause ::= */
      case 268: /* key_opt ::= */ yytestcase(yyruleno==268);
      case 316: /* filter_opt ::= */ yytestcase(yyruleno==316);
{ yymsp[1].minor.yy102 = 0; }
        break;
      case 250: /* when_clause ::= WHEN expr */
      case 269: /* key_opt ::= KEY expr */ yytestcase(yyruleno==269);
{ yymsp[-1].minor.yy102 = yymsp[0].minor.yy102; }
        break;
      case 251: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
{
  assert( yymsp[-2].minor.yy11!=0 );
  yymsp[-2].minor.yy11->pLast->pNext = yymsp[-1].minor.yy11;
  yymsp[-2].minor.yy11->pLast = yymsp[-1].minor.yy11;
}
        break;
      case 252: /* trigger_cmd_list ::= trigger_cmd SEMI */
{ 
  assert( yymsp[-1].minor.yy11!=0 );
  yymsp[-1].minor.yy11->pLast = yymsp[-1].minor.yy11;
}
        break;
      case 253: /* trnm ::= nm DOT nm */
{
  yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;
  sqlite3ErrorMsg(pParse, 
        "qualified table names are not allowed on INSERT, UPDATE, and DELETE "
        "statements within triggers");
}
        break;
      case 254: /* tridxby ::= INDEXED BY nm */
{
  sqlite3ErrorMsg(pParse,
        "the INDEXED BY clause is not allowed on UPDATE or DELETE statements "
        "within triggers");
}
        break;
      case 255: /* tridxby ::= NOT INDEXED */
{
  sqlite3ErrorMsg(pParse,
        "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements "
        "within triggers");
}
        break;
      case 256: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
{yylhsminor.yy11 = sqlite3TriggerUpdateStep(pParse, &yymsp[-5].minor.yy0, yymsp[-2].minor.yy94, yymsp[-1].minor.yy102, yymsp[-6].minor.yy100, yymsp[-7].minor.yy0.z, yymsp[0].minor.yy528);}
  yymsp[-7].minor.yy11 = yylhsminor.yy11;
        break;
      case 257: /* trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
{
   yylhsminor.yy11 = sqlite3TriggerInsertStep(pParse,&yymsp[-4].minor.yy0,yymsp[-3].minor.yy76,yymsp[-2].minor.yy391,yymsp[-6].minor.yy100,yymsp[-1].minor.yy95,yymsp[-7].minor.yy528,yymsp[0].minor.yy528);/*yylhsminor.yy11-overwrites-yymsp[-6].minor.yy100*/
}
  yymsp[-7].minor.yy11 = yylhsminor.yy11;
        break;
      case 258: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
{yylhsminor.yy11 = sqlite3TriggerDeleteStep(pParse, &yymsp[-3].minor.yy0, yymsp[-1].minor.yy102, yymsp[-5].minor.yy0.z, yymsp[0].minor.yy528);}
  yymsp[-5].minor.yy11 = yylhsminor.yy11;
        break;
      case 259: /* trigger_cmd ::= scanpt select scanpt */
{yylhsminor.yy11 = sqlite3TriggerSelectStep(pParse->db, yymsp[-1].minor.yy391, yymsp[-2].minor.yy528, yymsp[0].minor.yy528); /*yylhsminor.yy11-overwrites-yymsp[-1].minor.yy391*/}
  yymsp[-2].minor.yy11 = yylhsminor.yy11;
        break;
      case 260: /* expr ::= RAISE LP IGNORE RP */
{
  yymsp[-3].minor.yy102 = sqlite3PExpr(pParse, TK_RAISE, 0, 0); 
  if( yymsp[-3].minor.yy102 ){
    yymsp[-3].minor.yy102->affinity = OE_Ignore;
  }
}
        break;
      case 261: /* expr ::= RAISE LP raisetype COMMA nm RP */
{
  yymsp[-5].minor.yy102 = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1); 
  if( yymsp[-5].minor.yy102 ) {
    yymsp[-5].minor.yy102->affinity = (char)yymsp[-3].minor.yy100;
  }
}
        break;
      case 262: /* raisetype ::= ROLLBACK */
{yymsp[0].minor.yy100 = OE_Rollback;}
        break;
      case 264: /* raisetype ::= FAIL */
{yymsp[0].minor.yy100 = OE_Fail;}
        break;
      case 265: /* cmd ::= DROP TRIGGER ifexists fullname */
{
  sqlite3DropTrigger(pParse,yymsp[0].minor.yy407,yymsp[-1].minor.yy100);
}
        break;
      case 266: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
{
  sqlite3Attach(pParse, yymsp[-3].minor.yy102, yymsp[-1].minor.yy102, yymsp[0].minor.yy102);
}
        break;
      case 267: /* cmd ::= DETACH database_kw_opt expr */
{
  sqlite3Detach(pParse, yymsp[0].minor.yy102);
}
        break;
      case 270: /* cmd ::= REINDEX */
{sqlite3Reindex(pParse, 0, 0);}
        break;
      case 271: /* cmd ::= REINDEX nm dbnm */
{sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
        break;
      case 272: /* cmd ::= ANALYZE */
{sqlite3Analyze(pParse, 0, 0);}
        break;
      case 273: /* cmd ::= ANALYZE nm dbnm */
{sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
        break;
      case 274: /* cmd ::= ALTER TABLE fullname RENAME TO nm */
{
  sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy407,&yymsp[0].minor.yy0);
}
        break;
      case 275: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
{
  yymsp[-1].minor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-1].minor.yy0.z) + pParse->sLastToken.n;
  sqlite3AlterFinishAddColumn(pParse, &yymsp[-1].minor.yy0);
}
        break;
      case 276: /* add_column_fullname ::= fullname */
{
  disableLookaside(pParse);
  sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy407);
}
        break;
      case 277: /* cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
{
  sqlite3AlterRenameColumn(pParse, yymsp[-5].minor.yy407, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0);
}
        break;
      case 278: /* cmd ::= create_vtab */
{sqlite3VtabFinishParse(pParse,0);}
        break;
      case 279: /* cmd ::= create_vtab LP vtabarglist RP */
{sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);}
        break;
      case 280: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
{
    sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy100);
}
        break;
      case 281: /* vtabarg ::= */
{sqlite3VtabArgInit(pParse);}
        break;
      case 282: /* vtabargtoken ::= ANY */
      case 283: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==283);
      case 284: /* lp ::= LP */ yytestcase(yyruleno==284);
{sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);}
        break;
      case 285: /* with ::= WITH wqlist */
      case 286: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==286);
{ sqlite3WithPush(pParse, yymsp[0].minor.yy243, 1); }
        break;
      case 287: /* wqlist ::= nm eidlist_opt AS LP select RP */
{
  yymsp[-5].minor.yy243 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy94, yymsp[-1].minor.yy391); /*A-overwrites-X*/
}
        break;
      case 288: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
{
  yymsp[-7].minor.yy243 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy243, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy94, yymsp[-1].minor.yy391);
}
        break;
      case 289: /* windowdefn_list ::= windowdefn */
{ yylhsminor.yy379 = yymsp[0].minor.yy379; }
  yymsp[0].minor.yy379 = yylhsminor.yy379;
        break;
      case 290: /* windowdefn_list ::= windowdefn_list COMMA windowdefn */
{
  assert( yymsp[0].minor.yy379!=0 );
  sqlite3WindowChain(pParse, yymsp[0].minor.yy379, yymsp[-2].minor.yy379);
  yymsp[0].minor.yy379->pNextWin = yymsp[-2].minor.yy379;
  yylhsminor.yy379 = yymsp[0].minor.yy379;
}
  yymsp[-2].minor.yy379 = yylhsminor.yy379;
        break;
      case 291: /* windowdefn ::= nm AS LP window RP */
{
  if( ALWAYS(yymsp[-1].minor.yy379) ){
    yymsp[-1].minor.yy379->zName = sqlite3DbStrNDup(pParse->db, yymsp[-4].minor.yy0.z, yymsp[-4].minor.yy0.n);
  }
  yylhsminor.yy379 = yymsp[-1].minor.yy379;
}
  yymsp[-4].minor.yy379 = yylhsminor.yy379;
        break;
      case 292: /* window ::= PARTITION BY nexprlist orderby_opt frame_opt */
{
  yymsp[-4].minor.yy379 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy379, yymsp[-2].minor.yy94, yymsp[-1].minor.yy94, 0);
}
        break;
      case 293: /* window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
{
  yylhsminor.yy379 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy379, yymsp[-2].minor.yy94, yymsp[-1].minor.yy94, &yymsp[-5].minor.yy0);
}
  yymsp[-5].minor.yy379 = yylhsminor.yy379;
        break;
      case 294: /* window ::= ORDER BY sortlist frame_opt */
{
  yymsp[-3].minor.yy379 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy379, 0, yymsp[-1].minor.yy94, 0);
}
        break;
      case 295: /* window ::= nm ORDER BY sortlist frame_opt */
{
  yylhsminor.yy379 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy379, 0, yymsp[-1].minor.yy94, &yymsp[-4].minor.yy0);
}
  yymsp[-4].minor.yy379 = yylhsminor.yy379;
        break;
      case 296: /* window ::= frame_opt */

{
  yylhsminor.yy379 = yymsp[0].minor.yy379;
}
  yymsp[0].minor.yy379 = yylhsminor.yy379;
        break;
      case 297: /* window ::= nm frame_opt */
{
  yylhsminor.yy379 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy379, 0, 0, &yymsp[-1].minor.yy0);
}
  yymsp[-1].minor.yy379 = yylhsminor.yy379;
        break;
      case 298: /* frame_opt ::= */
{ 
  yymsp[1].minor.yy379 = sqlite3WindowAlloc(pParse, 0, TK_UNBOUNDED, 0, TK_CURRENT, 0, 0);
}
        break;
      case 299: /* frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
{ 
  yylhsminor.yy379 = sqlite3WindowAlloc(pParse, yymsp[-2].minor.yy100, yymsp[-1].minor.yy389.eType, yymsp[-1].minor.yy389.pExpr, TK_CURRENT, 0, yymsp[0].minor.yy218);

}
  yymsp[-2].minor.yy379 = yylhsminor.yy379;
        break;
      case 300: /* frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
{ 
  yylhsminor.yy379 = sqlite3WindowAlloc(pParse, yymsp[-5].minor.yy100, yymsp[-3].minor.yy389.eType, yymsp[-3].minor.yy389.pExpr, yymsp[-1].minor.yy389.eType, yymsp[-1].minor.yy389.pExpr, yymsp[0].minor.yy218);

}
  yymsp[-5].minor.yy379 = yylhsminor.yy379;
        break;
      case 302: /* frame_bound_s ::= frame_bound */
      case 304: /* frame_bound_e ::= frame_bound */ yytestcase(yyruleno==304);
{yylhsminor.yy389 = yymsp[0].minor.yy389;}
  yymsp[0].minor.yy389 = yylhsminor.yy389;
        break;
      case 303: /* frame_bound_s ::= UNBOUNDED PRECEDING */
      case 305: /* frame_bound_e ::= UNBOUNDED FOLLOWING */ yytestcase(yyruleno==305);
      case 307: /* frame_bound ::= CURRENT ROW */ yytestcase(yyruleno==307);
{yylhsminor.yy389.eType = yymsp[-1].major; yylhsminor.yy389.pExpr = 0;}
  yymsp[-1].minor.yy389 = yylhsminor.yy389;
        break;
      case 306: /* frame_bound ::= expr PRECEDING|FOLLOWING */
{yylhsminor.yy389.eType = yymsp[0].major; yylhsminor.yy389.pExpr = yymsp[-1].minor.yy102;}
  yymsp[-1].minor.yy389 = yylhsminor.yy389;
        break;
      case 308: /* frame_exclude_opt ::= */
{yymsp[1].minor.yy218 = 0;}
        break;
      case 309: /* frame_exclude_opt ::= EXCLUDE frame_exclude */
{yymsp[-1].minor.yy218 = yymsp[0].minor.yy218;}
        break;
      case 310: /* frame_exclude ::= NO OTHERS */
      case 311: /* frame_exclude ::= CURRENT ROW */ yytestcase(yyruleno==311);
{yymsp[-1].minor.yy218 = yymsp[-1].major; /*A-overwrites-X*/}
        break;
      case 312: /* frame_exclude ::= GROUP|TIES */
{yymsp[0].minor.yy218 = yymsp[0].major; /*A-overwrites-X*/}
        break;
      case 313: /* window_clause ::= WINDOW windowdefn_list */
{ yymsp[-1].minor.yy379 = yymsp[0].minor.yy379; }
        break;
      case 314: /* over_clause ::= filter_opt OVER LP window RP */

{
  yylhsminor.yy379 = yymsp[-1].minor.yy379;
  assert( yylhsminor.yy379!=0 );
  yylhsminor.yy379->pFilter = yymsp[-4].minor.yy102;
}
  yymsp[-4].minor.yy379 = yylhsminor.yy379;
        break;
      case 315: /* over_clause ::= filter_opt OVER nm */
{
  yylhsminor.yy379 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window));
  if( yylhsminor.yy379 ){
    yylhsminor.yy379->zName = sqlite3DbStrNDup(pParse->db, yymsp[0].minor.yy0.z, yymsp[0].minor.yy0.n);
    yylhsminor.yy379->pFilter = yymsp[-2].minor.yy102;
  }else{
    sqlite3ExprDelete(pParse->db, yymsp[-2].minor.yy102);
  }
}
  yymsp[-2].minor.yy379 = yylhsminor.yy379;
        break;














      case 317: /* filter_opt ::= FILTER LP WHERE expr RP */
{ yymsp[-4].minor.yy102 = yymsp[-1].minor.yy102; }
        break;
      default:
      /* (318) input ::= cmdlist */ yytestcase(yyruleno==318);
      /* (319) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==319);
      /* (320) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=320);
      /* (321) ecmd ::= SEMI */ yytestcase(yyruleno==321);
      /* (322) ecmd ::= cmdx SEMI */ yytestcase(yyruleno==322);
      /* (323) ecmd ::= explain cmdx */ yytestcase(yyruleno==323);
      /* (324) trans_opt ::= */ yytestcase(yyruleno==324);
      /* (325) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==325);
      /* (326) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==326);
      /* (327) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==327);
      /* (328) savepoint_opt ::= */ yytestcase(yyruleno==328);
      /* (329) cmd ::= create_table create_table_args */ yytestcase(yyruleno==329);
      /* (330) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==330);
      /* (331) columnlist ::= columnname carglist */ yytestcase(yyruleno==331);
      /* (332) nm ::= ID|INDEXED */ yytestcase(yyruleno==332);
      /* (333) nm ::= STRING */ yytestcase(yyruleno==333);
      /* (334) nm ::= JOIN_KW */ yytestcase(yyruleno==334);
      /* (335) typetoken ::= typename */ yytestcase(yyruleno==335);
      /* (336) typename ::= ID|STRING */ yytestcase(yyruleno==336);
      /* (337) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=337);
      /* (338) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=338);
      /* (339) carglist ::= carglist ccons */ yytestcase(yyruleno==339);
      /* (340) carglist ::= */ yytestcase(yyruleno==340);
      /* (341) ccons ::= NULL onconf */ yytestcase(yyruleno==341);
      /* (342) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==342);
      /* (343) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==343);
      /* (344) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=344);
      /* (345) tconscomma ::= */ yytestcase(yyruleno==345);
      /* (346) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=346);
      /* (347) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=347);
      /* (348) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=348);
      /* (349) oneselect ::= values */ yytestcase(yyruleno==349);
      /* (350) sclp ::= selcollist COMMA */ yytestcase(yyruleno==350);
      /* (351) as ::= ID|STRING */ yytestcase(yyruleno==351);
      /* (352) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=352);
      /* (353) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==353);
      /* (354) exprlist ::= nexprlist */ yytestcase(yyruleno==354);
      /* (355) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=355);
      /* (356) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=356);
      /* (357) nmnum ::= ON */ yytestcase(yyruleno==357);
      /* (358) nmnum ::= DELETE */ yytestcase(yyruleno==358);
      /* (359) nmnum ::= DEFAULT */ yytestcase(yyruleno==359);
      /* (360) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==360);
      /* (361) foreach_clause ::= */ yytestcase(yyruleno==361);
      /* (362) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==362);
      /* (363) trnm ::= nm */ yytestcase(yyruleno==363);
      /* (364) tridxby ::= */ yytestcase(yyruleno==364);
      /* (365) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==365);
      /* (366) database_kw_opt ::= */ yytestcase(yyruleno==366);
      /* (367) kwcolumn_opt ::= */ yytestcase(yyruleno==367);
      /* (368) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==368);
      /* (369) vtabarglist ::= vtabarg */ yytestcase(yyruleno==369);
      /* (370) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==370);
      /* (371) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==371);
      /* (372) anylist ::= */ yytestcase(yyruleno==372);
      /* (373) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==373);
      /* (374) anylist ::= anylist ANY */ yytestcase(yyruleno==374);
      /* (375) with ::= */ yytestcase(yyruleno==375);
        break;
/********** End reduce actions ************************************************/
  };
  assert( yyruleno<sizeof(yyRuleInfoLhs)/sizeof(yyRuleInfoLhs[0]) );
  yygoto = yyRuleInfoLhs[yyruleno];
  yysize = yyRuleInfoNRhs[yyruleno];
  yyact = yy_find_reduce_action(yymsp[yysize].stateno,(YYCODETYPE)yygoto);
................................................................................

/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
SQLITE_PRIVATE int sqlite3ParserFallback(int iToken){
#ifdef YYFALLBACK
  if( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) ){
    return yyFallback[iToken];
  }
#else
  (void)iToken;
#endif
  return 0;
}

/************** End of parse.c ***********************************************/
................................................................................
** The code in this file implements a function that determines whether
** or not a given identifier is really an SQL keyword.  The same thing
** might be implemented more directly using a hand-written hash table.
** But by using this automatically generated code, the size of the code
** is substantially reduced.  This is important for embedded applications
** on platforms with limited memory.
*/
/* Hash score: 214 */
/* zKWText[] encodes 950 bytes of keyword text in 629 bytes */
/*   REINDEXEDESCAPEACHECKEYBEFOREIGNOREGEXPLAINSTEADDATABASELECT       */
/*   ABLEFTHENDEFERRABLELSEXCLUDELETEMPORARYCONSTRAINTERSECTIES         */
/*   AVEPOINTOFFSETRANSACTIONATURALTERAISEXCEPTRIGGEREFERENCES          */
/*   UNIQUERYWITHOUTERELEASEXCLUSIVEXISTSATTACHAVINGLOBEGINNERANGE      */
/*   BETWEENOTHINGROUPSCASCADETACHCASECOLLATECREATECURRENT_DATE         */
/*   IMMEDIATEJOINSERTLIKEMATCHPLANALYZEPRAGMABORTUPDATEVALUES          */
/*   VIRTUALIMITWHENOTNULLWHERECURSIVEAFTERENAMEANDEFAULT               */
/*   AUTOINCREMENTCASTCOLUMNCOMMITCONFLICTCROSSCURRENT_TIMESTAMP        */
/*   ARTITIONDEFERREDISTINCTDROPRECEDINGFAILFILTEREPLACEFOLLOWING       */
/*   FROMFULLIFISNULLORDERESTRICTOTHERSOVERIGHTROLLBACKROWS             */
/*   UNBOUNDEDUNIONUSINGVACUUMVIEWINDOWBYINITIALLYPRIMARY               */
static const char zKWText[628] = {
  'R','E','I','N','D','E','X','E','D','E','S','C','A','P','E','A','C','H',
  'E','C','K','E','Y','B','E','F','O','R','E','I','G','N','O','R','E','G',
  'E','X','P','L','A','I','N','S','T','E','A','D','D','A','T','A','B','A',
  'S','E','L','E','C','T','A','B','L','E','F','T','H','E','N','D','E','F',
  'E','R','R','A','B','L','E','L','S','E','X','C','L','U','D','E','L','E',
  'T','E','M','P','O','R','A','R','Y','C','O','N','S','T','R','A','I','N',
  'T','E','R','S','E','C','T','I','E','S','A','V','E','P','O','I','N','T',
  'O','F','F','S','E','T','R','A','N','S','A','C','T','I','O','N','A','T',
  'U','R','A','L','T','E','R','A','I','S','E','X','C','E','P','T','R','I',


  'G','G','E','R','E','F','E','R','E','N','C','E','S','U','N','I','Q','U',
  'E','R','Y','W','I','T','H','O','U','T','E','R','E','L','E','A','S','E',
  'X','C','L','U','S','I','V','E','X','I','S','T','S','A','T','T','A','C',
  'H','A','V','I','N','G','L','O','B','E','G','I','N','N','E','R','A','N',
  'G','E','B','E','T','W','E','E','N','O','T','H','I','N','G','R','O','U',
  'P','S','C','A','S','C','A','D','E','T','A','C','H','C','A','S','E','C',
  'O','L','L','A','T','E','C','R','E','A','T','E','C','U','R','R','E','N',
  'T','_','D','A','T','E','I','M','M','E','D','I','A','T','E','J','O','I',
  'N','S','E','R','T','L','I','K','E','M','A','T','C','H','P','L','A','N',
  'A','L','Y','Z','E','P','R','A','G','M','A','B','O','R','T','U','P','D',
  'A','T','E','V','A','L','U','E','S','V','I','R','T','U','A','L','I','M',
  'I','T','W','H','E','N','O','T','N','U','L','L','W','H','E','R','E','C',
  'U','R','S','I','V','E','A','F','T','E','R','E','N','A','M','E','A','N',
  'D','E','F','A','U','L','T','A','U','T','O','I','N','C','R','E','M','E',
  'N','T','C','A','S','T','C','O','L','U','M','N','C','O','M','M','I','T',
  'C','O','N','F','L','I','C','T','C','R','O','S','S','C','U','R','R','E',
  'N','T','_','T','I','M','E','S','T','A','M','P','A','R','T','I','T','I',
  'O','N','D','E','F','E','R','R','E','D','I','S','T','I','N','C','T','D',
  'R','O','P','R','E','C','E','D','I','N','G','F','A','I','L','F','I','L',

  'T','E','R','E','P','L','A','C','E','F','O','L','L','O','W','I','N','G',
  'F','R','O','M','F','U','L','L','I','F','I','S','N','U','L','L','O','R',
  'D','E','R','E','S','T','R','I','C','T','O','T','H','E','R','S','O','V',
  'E','R','I','G','H','T','R','O','L','L','B','A','C','K','R','O','W','S',
  'U','N','B','O','U','N','D','E','D','U','N','I','O','N','U','S','I','N',
  'G','V','A','C','U','U','M','V','I','E','W','I','N','D','O','W','B','Y',
  'I','N','I','T','I','A','L','L','Y','P','R','I','M','A','R','Y',
};
/* aKWHash[i] is the hash value for the i-th keyword */
static const unsigned char aKWHash[127] = {
    75, 111, 127,  73, 108,  29,   0,   0,  83,   0,  77,  63,   0,
    37,  33,  78,  15,   0, 126,  86,  57, 120, 128,  19,   0,   0,
   133,   0, 131, 123,   0,  22,  98,   0,   9,   0,   0, 117,  71,
     0,  69,   6,   0,  49,  95, 140,   0, 129, 106,   0,   0,  54,
     0, 109,  24,   0,  17,   0, 134,  56,  23,  26,   5,  58, 135,
   101,   0,   0, 139, 112,  62, 138,  59, 115,  65,   0,  96,   0,
   105,  45,   0, 104,   0,   0,   0, 100,  97, 102, 107, 119,  14,
    31, 118,   0,  81,   0, 136, 116, 137,  61, 124, 132,  80, 121,
    88,  30,  85,   0,   0,  99,  35, 125, 122,   0, 130,   0,   0,
    41,   0,  91,  89,  90,   0,  20,  87, 113,  82,

};
/* aKWNext[] forms the hash collision chain.  If aKWHash[i]==0
** then the i-th keyword has no more hash collisions.  Otherwise,
** the next keyword with the same hash is aKWHash[i]-1. */
static const unsigned char aKWNext[140] = {
     0,   0,   0,   0,   4,   0,   0,   0,   0,   0,   0,   0,   0,
     0,   2,   0,   0,   0,   0,   0,   0,  13,   0,   0,   0,   0,
     0,   0,   0,  21,   0,   0,  12,   0,   0,   0,   0,   0,   0,
     7,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
    51,  28,   0,   0,  38,   0,   0,   0,  44,   0,   0,   0,   3,
     0,   0,  67,   1,  66,   0,   0,   0,  36,   0,  47,   0,   0,
     0,   0,   0,  48,  50,  76,   0,   0,  42,   0,  60,   0,   0,
     0,  43,   0,  16,  55,  10,   0,   0,   0,   0,   0,   0,   0,
    11,  72,  93,   0,   0,   8,   0, 110,   0, 103,  40,  53,  70,
     0, 114,   0,  74,  52,   0,   0,  92,  39,  46,   0,  68,  32,
    84,   0,  34,  27,  25,  18,  94,   0,  64,  79,
};
/* aKWLen[i] is the length (in bytes) of the i-th keyword */
static const unsigned char aKWLen[140] = {
     7,   7,   5,   4,   6,   4,   5,   3,   6,   7,   3,   6,   6,
     7,   7,   3,   8,   2,   6,   5,   4,   4,   3,  10,   4,   7,
     6,   9,   4,   2,  10,   9,   4,   9,   4,   6,   2,   3,  11,

     6,   2,   7,   5,   5,   6,   7,  10,   6,   5,   7,   4,   5,
     7,   9,   6,   6,   6,   4,   5,   5,   5,   7,   7,   6,   5,
     7,   3,   6,   4,   7,   6,  12,   9,   4,   6,   4,   5,   4,
     7,   6,   5,   6,   6,   7,   5,   4,   7,   3,   2,   4,   5,
     9,   5,   6,   3,   7,  13,   2,   2,   4,   6,   6,   8,   5,
    17,  12,   7,   9,   8,   8,   2,   4,   9,   4,   6,   7,   9,
     4,   4,   2,   6,   5,   8,   6,   4,   5,   8,   4,   3,   9,
     5,   5,   6,   4,   6,   2,   2,   9,   3,   7,
};
/* aKWOffset[i] is the index into zKWText[] of the start of
** the text for the i-th keyword. */
static const unsigned short int aKWOffset[140] = {
     0,   2,   2,   8,   9,  14,  16,  20,  23,  25,  25,  29,  33,
    36,  41,  46,  48,  53,  54,  59,  62,  65,  67,  69,  78,  81,
    86,  90,  90,  94,  99, 106, 114, 117, 123, 126, 126, 129, 131,
   136, 140, 141, 146, 150, 154, 159, 165, 175, 178, 183, 183, 187,
   191, 197, 205, 211, 216, 221, 224, 227, 231, 236, 242, 248, 248,
   254, 255, 259, 265, 269, 276, 282, 294, 303, 305, 311, 315, 320,
   322, 329, 334, 339, 345, 351, 357, 362, 365, 365, 365, 368, 372,
   375, 384, 388, 394, 396, 403, 405, 407, 416, 420, 426, 432, 440,
   445, 445, 445, 461, 470, 477, 478, 485, 488, 497, 501, 506, 513,
   522, 526, 530, 532, 538, 542, 550, 556, 559, 564, 572, 572, 576,
   585, 590, 595, 601, 604, 607, 610, 612, 617, 621,
};
/* aKWCode[i] is the parser symbol code for the i-th keyword */
static const unsigned char aKWCode[140] = {
  TK_REINDEX,    TK_INDEXED,    TK_INDEX,      TK_DESC,       TK_ESCAPE,     
  TK_EACH,       TK_CHECK,      TK_KEY,        TK_BEFORE,     TK_FOREIGN,    
  TK_FOR,        TK_IGNORE,     TK_LIKE_KW,    TK_EXPLAIN,    TK_INSTEAD,    
  TK_ADD,        TK_DATABASE,   TK_AS,         TK_SELECT,     TK_TABLE,      
  TK_JOIN_KW,    TK_THEN,       TK_END,        TK_DEFERRABLE, TK_ELSE,       
  TK_EXCLUDE,    TK_DELETE,     TK_TEMP,       TK_TEMP,       TK_OR,         
  TK_CONSTRAINT, TK_INTERSECT,  TK_TIES,       TK_SAVEPOINT,  TK_INTO,       

  TK_OFFSET,     TK_OF,         TK_SET,        TK_TRANSACTION,TK_ACTION,     
  TK_ON,         TK_JOIN_KW,    TK_ALTER,      TK_RAISE,      TK_EXCEPT,     

  TK_TRIGGER,    TK_REFERENCES, TK_UNIQUE,     TK_QUERY,      TK_WITHOUT,    
  TK_WITH,       TK_JOIN_KW,    TK_RELEASE,    TK_EXCLUSIVE,  TK_EXISTS,     
  TK_ATTACH,     TK_HAVING,     TK_LIKE_KW,    TK_BEGIN,      TK_JOIN_KW,    
  TK_RANGE,      TK_BETWEEN,    TK_NOTHING,    TK_GROUPS,     TK_GROUP,      
  TK_CASCADE,    TK_ASC,        TK_DETACH,     TK_CASE,       TK_COLLATE,    
  TK_CREATE,     TK_CTIME_KW,   TK_IMMEDIATE,  TK_JOIN,       TK_INSERT,     
  TK_LIKE_KW,    TK_MATCH,      TK_PLAN,       TK_ANALYZE,    TK_PRAGMA,     
  TK_ABORT,      TK_UPDATE,     TK_VALUES,     TK_VIRTUAL,    TK_LIMIT,      
  TK_WHEN,       TK_NOTNULL,    TK_NOT,        TK_NO,         TK_NULL,       
  TK_WHERE,      TK_RECURSIVE,  TK_AFTER,      TK_RENAME,     TK_AND,        
  TK_DEFAULT,    TK_AUTOINCR,   TK_TO,         TK_IN,         TK_CAST,       
  TK_COLUMNKW,   TK_COMMIT,     TK_CONFLICT,   TK_JOIN_KW,    TK_CTIME_KW,   
  TK_CTIME_KW,   TK_CURRENT,    TK_PARTITION,  TK_DEFERRED,   TK_DISTINCT,   
  TK_IS,         TK_DROP,       TK_PRECEDING,  TK_FAIL,       TK_FILTER,     

  TK_REPLACE,    TK_FOLLOWING,  TK_FROM,       TK_JOIN_KW,    TK_IF,         
  TK_ISNULL,     TK_ORDER,      TK_RESTRICT,   TK_OTHERS,     TK_OVER,       
  TK_JOIN_KW,    TK_ROLLBACK,   TK_ROWS,       TK_ROW,        TK_UNBOUNDED,  
  TK_UNION,      TK_USING,      TK_VACUUM,     TK_VIEW,       TK_WINDOW,     
  TK_DO,         TK_BY,         TK_INITIALLY,  TK_ALL,        TK_PRIMARY,    
};
/* Check to see if z[0..n-1] is a keyword. If it is, write the
** parser symbol code for that keyword into *pType.  Always
** return the integer n (the length of the token). */
static int keywordCode(const char *z, int n, int *pType){
  int i, j;
  const char *zKW;
................................................................................
      testcase( i==23 ); /* DEFERRABLE */
      testcase( i==24 ); /* ELSE */
      testcase( i==25 ); /* EXCLUDE */
      testcase( i==26 ); /* DELETE */
      testcase( i==27 ); /* TEMPORARY */
      testcase( i==28 ); /* TEMP */
      testcase( i==29 ); /* OR */
      testcase( i==30 ); /* CONSTRAINT */
      testcase( i==31 ); /* INTERSECT */
      testcase( i==32 ); /* TIES */
      testcase( i==33 ); /* SAVEPOINT */
      testcase( i==34 ); /* INTO */
      testcase( i==35 ); /* OFFSET */
      testcase( i==36 ); /* OF */
      testcase( i==37 ); /* SET */
      testcase( i==38 ); /* TRANSACTION */
      testcase( i==39 ); /* ACTION */
      testcase( i==40 ); /* ON */
      testcase( i==41 ); /* NATURAL */
      testcase( i==42 ); /* ALTER */
      testcase( i==43 ); /* RAISE */
      testcase( i==44 ); /* EXCEPT */
      testcase( i==45 ); /* TRIGGER */
      testcase( i==46 ); /* REFERENCES */
      testcase( i==47 ); /* UNIQUE */
      testcase( i==48 ); /* QUERY */
      testcase( i==49 ); /* WITHOUT */
      testcase( i==50 ); /* WITH */
      testcase( i==51 ); /* OUTER */
      testcase( i==52 ); /* RELEASE */
      testcase( i==53 ); /* EXCLUSIVE */
      testcase( i==54 ); /* EXISTS */
      testcase( i==55 ); /* ATTACH */
      testcase( i==56 ); /* HAVING */
      testcase( i==57 ); /* GLOB */
      testcase( i==58 ); /* BEGIN */
      testcase( i==59 ); /* INNER */
      testcase( i==60 ); /* RANGE */
      testcase( i==61 ); /* BETWEEN */
      testcase( i==62 ); /* NOTHING */
      testcase( i==63 ); /* GROUPS */
      testcase( i==64 ); /* GROUP */
      testcase( i==65 ); /* CASCADE */
      testcase( i==66 ); /* ASC */
      testcase( i==67 ); /* DETACH */
      testcase( i==68 ); /* CASE */
      testcase( i==69 ); /* COLLATE */
      testcase( i==70 ); /* CREATE */
      testcase( i==71 ); /* CURRENT_DATE */
      testcase( i==72 ); /* IMMEDIATE */
      testcase( i==73 ); /* JOIN */
      testcase( i==74 ); /* INSERT */
      testcase( i==75 ); /* LIKE */
      testcase( i==76 ); /* MATCH */
      testcase( i==77 ); /* PLAN */
      testcase( i==78 ); /* ANALYZE */
      testcase( i==79 ); /* PRAGMA */
      testcase( i==80 ); /* ABORT */
      testcase( i==81 ); /* UPDATE */
      testcase( i==82 ); /* VALUES */
      testcase( i==83 ); /* VIRTUAL */
      testcase( i==84 ); /* LIMIT */
      testcase( i==85 ); /* WHEN */
      testcase( i==86 ); /* NOTNULL */
      testcase( i==87 ); /* NOT */
      testcase( i==88 ); /* NO */
      testcase( i==89 ); /* NULL */
      testcase( i==90 ); /* WHERE */
      testcase( i==91 ); /* RECURSIVE */
      testcase( i==92 ); /* AFTER */
      testcase( i==93 ); /* RENAME */
      testcase( i==94 ); /* AND */
      testcase( i==95 ); /* DEFAULT */
      testcase( i==96 ); /* AUTOINCREMENT */
      testcase( i==97 ); /* TO */
      testcase( i==98 ); /* IN */
      testcase( i==99 ); /* CAST */
      testcase( i==100 ); /* COLUMN */
      testcase( i==101 ); /* COMMIT */
      testcase( i==102 ); /* CONFLICT */
      testcase( i==103 ); /* CROSS */
      testcase( i==104 ); /* CURRENT_TIMESTAMP */
      testcase( i==105 ); /* CURRENT_TIME */
      testcase( i==106 ); /* CURRENT */
      testcase( i==107 ); /* PARTITION */
      testcase( i==108 ); /* DEFERRED */
      testcase( i==109 ); /* DISTINCT */
      testcase( i==110 ); /* IS */
      testcase( i==111 ); /* DROP */
      testcase( i==112 ); /* PRECEDING */
      testcase( i==113 ); /* FAIL */
      testcase( i==114 ); /* FILTER */
      testcase( i==115 ); /* REPLACE */
      testcase( i==116 ); /* FOLLOWING */
      testcase( i==117 ); /* FROM */
      testcase( i==118 ); /* FULL */
      testcase( i==119 ); /* IF */
      testcase( i==120 ); /* ISNULL */
      testcase( i==121 ); /* ORDER */
      testcase( i==122 ); /* RESTRICT */
      testcase( i==123 ); /* OTHERS */
      testcase( i==124 ); /* OVER */
      testcase( i==125 ); /* RIGHT */
      testcase( i==126 ); /* ROLLBACK */
      testcase( i==127 ); /* ROWS */
      testcase( i==128 ); /* ROW */
      testcase( i==129 ); /* UNBOUNDED */
      testcase( i==130 ); /* UNION */
      testcase( i==131 ); /* USING */
      testcase( i==132 ); /* VACUUM */
      testcase( i==133 ); /* VIEW */
      testcase( i==134 ); /* WINDOW */
      testcase( i==135 ); /* DO */
      testcase( i==136 ); /* BY */
      testcase( i==137 ); /* INITIALLY */
      testcase( i==138 ); /* ALL */
      testcase( i==139 ); /* PRIMARY */



      *pType = aKWCode[i];
      break;
    }
  }
  return n;
}
SQLITE_PRIVATE int sqlite3KeywordCode(const unsigned char *z, int n){
  int id = TK_ID;
  keywordCode((char*)z, n, &id);
  return id;
}
#define SQLITE_N_KEYWORD 140
SQLITE_API int sqlite3_keyword_name(int i,const char **pzName,int *pnName){
  if( i<0 || i>=SQLITE_N_KEYWORD ) return SQLITE_ERROR;
  *pzName = zKWText + aKWOffset[i];
  *pnName = aKWLen[i];
  return SQLITE_OK;
}
SQLITE_API int sqlite3_keyword_count(void){ return SQLITE_N_KEYWORD; }
................................................................................
    default: {
      static const struct {
        int op;      /* The opcode */
        u32 mask;    /* Mask of the bit in sqlite3.flags to set/clear */
      } aFlagOp[] = {
        { SQLITE_DBCONFIG_ENABLE_FKEY,           SQLITE_ForeignKeys    },
        { SQLITE_DBCONFIG_ENABLE_TRIGGER,        SQLITE_EnableTrigger  },

        { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer  },
        { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension  },
        { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE,      SQLITE_NoCkptOnClose  },
        { SQLITE_DBCONFIG_ENABLE_QPSG,           SQLITE_EnableQPSG     },
        { SQLITE_DBCONFIG_TRIGGER_EQP,           SQLITE_TriggerEQP     },
        { SQLITE_DBCONFIG_RESET_DATABASE,        SQLITE_ResetDatabase  },
        { SQLITE_DBCONFIG_DEFENSIVE,             SQLITE_Defensive      },
................................................................................
    }
    sqlite3DbFree(db, pColl);
  }
  sqlite3HashClear(&db->aCollSeq);
#ifndef SQLITE_OMIT_VIRTUALTABLE
  for(i=sqliteHashFirst(&db->aModule); i; i=sqliteHashNext(i)){
    Module *pMod = (Module *)sqliteHashData(i);
    if( pMod->xDestroy ){
      pMod->xDestroy(pMod->pAux);
    }
    sqlite3VtabEponymousTableClear(db, pMod);
    sqlite3DbFree(db, pMod);
  }
  sqlite3HashClear(&db->aModule);
#endif

  sqlite3Error(db, SQLITE_OK); /* Deallocates any cached error strings. */
  sqlite3ValueFree(db->pErr);
  sqlite3CloseExtensions(db);
................................................................................
   || (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG)
   || (255<(nName = sqlite3Strlen30( zFunctionName)))
  ){
    return SQLITE_MISUSE_BKPT;
  }

  assert( SQLITE_FUNC_CONSTANT==SQLITE_DETERMINISTIC );
  extraFlags = enc &  SQLITE_DETERMINISTIC;

  enc &= (SQLITE_FUNC_ENCMASK|SQLITE_ANY);
  
#ifndef SQLITE_OMIT_UTF16
  /* If SQLITE_UTF16 is specified as the encoding type, transform this
  ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the
  ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally.
  **
................................................................................

  if( pDestructor ){
    pDestructor->nRef++;
  }
  p->u.pDestructor = pDestructor;
  p->funcFlags = (p->funcFlags & SQLITE_FUNC_ENCMASK) | extraFlags;
  testcase( p->funcFlags & SQLITE_DETERMINISTIC );

  p->xSFunc = xSFunc ? xSFunc : xStep;
  p->xFinalize = xFinal;
  p->xValue = xValue;
  p->xInverse = xInverse;
  p->pUserData = pUserData;
  p->nArg = (u16)nArg;
  return SQLITE_OK;
................................................................................
  db->autoCommit = 1;
  db->nextAutovac = -1;
  db->szMmap = sqlite3GlobalConfig.szMmap;
  db->nextPagesize = 0;
  db->nMaxSorterMmap = 0x7FFFFFFF;
  db->flags |= SQLITE_ShortColNames
                 | SQLITE_EnableTrigger

                 | SQLITE_CacheSpill

/* The SQLITE_DQS compile-time option determines the default settings
** for SQLITE_DBCONFIG_DQS_DDL and SQLITE_DBCONFIG_DQS_DML.
**
**    SQLITE_DQS     SQLITE_DBCONFIG_DQS_DDL    SQLITE_DBCONFIG_DQS_DML
**    ----------     -----------------------    -----------------------
................................................................................
    ** this verb acts like PRNG_RESET.
    */
    case SQLITE_TESTCTRL_PRNG_RESTORE: {
      sqlite3PrngRestoreState();
      break;
    }


    /*
    ** Reset the PRNG back to its uninitialized state.  The next call
    ** to sqlite3_randomness() will reseed the PRNG using a single call
    ** to the xRandomness method of the default VFS.















    */
    case SQLITE_TESTCTRL_PRNG_RESET: {






      sqlite3_randomness(0,0);
      break;
    }

    /*
    **  sqlite3_test_control(BITVEC_TEST, size, program)
    **
................................................................................
    ** testing causes certain assert() statements in the code to be activated
    ** that demonstrat invariants on well-formed database files.
    */
    case SQLITE_TESTCTRL_NEVER_CORRUPT: {
      sqlite3GlobalConfig.neverCorrupt = va_arg(ap, int);
      break;
    }












    /* Set the threshold at which OP_Once counters reset back to zero.
    ** By default this is 0x7ffffffe (over 2 billion), but that value is
    ** too big to test in a reasonable amount of time, so this control is
    ** provided to set a small and easily reachable reset value.
    */
    case SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD: {
................................................................................

/* #include "fts3.h" */
#ifndef SQLITE_CORE 
/* # include "sqlite3ext.h" */
  SQLITE_EXTENSION_INIT1
#endif













static int fts3EvalNext(Fts3Cursor *pCsr);
static int fts3EvalStart(Fts3Cursor *pCsr);
static int fts3TermSegReaderCursor(
    Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **);

#ifndef SQLITE_AMALGAMATION
# if defined(SQLITE_DEBUG)
................................................................................
    p += n;
    *pp = p;
  }
  *ppPoslist = pEnd;
}

/*
** Value used to signify the end of an position-list. This is safe because
** it is not possible to have a document with 2^31 terms.

*/
#define POSITION_LIST_END 0x7fffffff

/*
** This function is used to help parse position-lists. When this function is
** called, *pp may point to the start of the next varint in the position-list
** being parsed, or it may point to 1 byte past the end of the position-list
** (in which case **pp will be a terminator bytes POS_END (0) or
** (1)).
................................................................................
    int iCol1;         /* The current column index in pp1 */
    int iCol2;         /* The current column index in pp2 */

    if( *p1==POS_COLUMN ){ 
      fts3GetVarint32(&p1[1], &iCol1);
      if( iCol1==0 ) return FTS_CORRUPT_VTAB;
    }
    else if( *p1==POS_END ) iCol1 = POSITION_LIST_END;
    else iCol1 = 0;

    if( *p2==POS_COLUMN ){
      fts3GetVarint32(&p2[1], &iCol2);
      if( iCol2==0 ) return FTS_CORRUPT_VTAB;
    }
    else if( *p2==POS_END ) iCol2 = POSITION_LIST_END;
    else iCol2 = 0;

    if( iCol1==iCol2 ){
      sqlite3_int64 i1 = 0;       /* Last position from pp1 */
      sqlite3_int64 i2 = 0;       /* Last position from pp2 */
      sqlite3_int64 iPrev = 0;
      int n = fts3PutColNumber(&p, iCol1);
................................................................................
  sqlite3_int64 iWrite;
  if( bDescIdx==0 || *pbFirst==0 ){
    iWrite = iVal - *piPrev;
  }else{
    iWrite = *piPrev - iVal;
  }
  assert( *pbFirst || *piPrev==0 );

  assert( *pbFirst==0 || iWrite>0 );
  *pp += sqlite3Fts3PutVarint(*pp, iWrite);
  *piPrev = iVal;
  *pbFirst = 1;
}


/*
................................................................................
      fts3PoslistCopy(&p, &p1);
      fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1);
    }else{
      fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i2);
      fts3PoslistCopy(&p, &p2);
      fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2);
    }


  }

  if( rc!=SQLITE_OK ){
    sqlite3_free(aOut);
    p = aOut = 0;
  }else{
    assert( (p-aOut)<=n1+n2+FTS3_VARINT_MAX-1 );
................................................................................
  }else{
    rc = fts3EvalNext((Fts3Cursor *)pCursor);
  }
  assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
  return rc;
}

/*
** The following are copied from sqliteInt.h.
**
** Constants for the largest and smallest possible 64-bit signed integers.
** These macros are designed to work correctly on both 32-bit and 64-bit
** compilers.
*/
#ifndef SQLITE_AMALGAMATION
# define LARGEST_INT64  (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32))
# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64)
#endif

/*
** If the numeric type of argument pVal is "integer", then return it
** converted to a 64-bit signed integer. Otherwise, return a copy of
** the second parameter, iDefault.
*/
static sqlite3_int64 fts3DocidRange(sqlite3_value *pVal, i64 iDefault){
  if( pVal ){
................................................................................
  assert_fts3_nc( (pNode->a[0]=='\0')==(aDoclist!=0) );

  blobGrowBuffer(pPrev, nTerm, &rc);
  if( rc!=SQLITE_OK ) return rc;

  nPrefix = fts3PrefixCompress(pPrev->a, pPrev->n, zTerm, nTerm);
  nSuffix = nTerm - nPrefix;

  memcpy(pPrev->a, zTerm, nTerm);
  pPrev->n = nTerm;

  if( bFirst==0 ){
    pNode->n += sqlite3Fts3PutVarint(&pNode->a[pNode->n], nPrefix);
  }
  pNode->n += sqlite3Fts3PutVarint(&pNode->a[pNode->n], nSuffix);
................................................................................
    SnippetPhrase *pPhrase = &pIter->aPhrase[i];
    if( pPhrase->pTail ){
      char *pCsr = pPhrase->pTail;
      int iCsr = pPhrase->iTail;

      while( iCsr<(iStart+pIter->nSnippet) && iCsr>=iStart ){
        int j;
        u64 mPhrase = (u64)1 << i;
        u64 mPos = (u64)1 << (iCsr - iStart);
        assert( iCsr>=iStart && (iCsr - iStart)<=64 );
        assert( i>=0 && i<=64 );
        if( (mCover|mCovered)&mPhrase ){
          iScore++;
        }else{
          iScore += 1000;
        }
        mCover |= mPhrase;

................................................................................
  int *pApnd,             /* Append nodes to complete path if not NULL */
  const char **pzErr      /* Make *pzErr point to any syntax error in zPath */
){
  u32 i, j, nKey;
  const char *zKey;
  JsonNode *pRoot = &pParse->aNode[iRoot];
  if( zPath[0]==0 ) return pRoot;

  if( zPath[0]=='.' ){
    if( pRoot->eType!=JSON_OBJECT ) return 0;
    zPath++;
    if( zPath[0]=='"' ){
      zKey = zPath + 1;
      for(i=1; zPath[i] && zPath[i]!='"'; i++){}
      nKey = i-1;
................................................................................
  JsonString *pStr;
  UNUSED_PARAM(argc);
  pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr));
  if( pStr ){
    if( pStr->zBuf==0 ){
      jsonInit(pStr, ctx);
      jsonAppendChar(pStr, '[');
    }else{
      jsonAppendChar(pStr, ',');
      pStr->pCtx = ctx;
    }
    jsonAppendValue(pStr, argv[0]);
  }
}
static void jsonArrayCompute(sqlite3_context *ctx, int isFinal){
................................................................................
** text through that comma.
*/
static void jsonGroupInverse(
  sqlite3_context *ctx,
  int argc,
  sqlite3_value **argv
){
  int i;
  int inStr = 0;

  char *z;

  JsonString *pStr;
  UNUSED_PARAM(argc);
  UNUSED_PARAM(argv);
  pStr = (JsonString*)sqlite3_aggregate_context(ctx, 0);
#ifdef NEVER
  /* pStr is always non-NULL since jsonArrayStep() or jsonObjectStep() will
  ** always have been called to initalize it */
  if( NEVER(!pStr) ) return;
#endif
  z = pStr->zBuf;
  for(i=1; z[i]!=',' || inStr; i++){
    assert( i<pStr->nUsed );



    if( z[i]=='"' ){
      inStr = !inStr;
    }else if( z[i]=='\\' ){
      i++;



    }
  }
  pStr->nUsed -= i;      
  memmove(&z[1], &z[i+1], (size_t)pStr->nUsed-1);
}
#else
# define jsonGroupInverse 0
................................................................................
  u32 n;
  UNUSED_PARAM(argc);
  pStr = (JsonString*)sqlite3_aggregate_context(ctx, sizeof(*pStr));
  if( pStr ){
    if( pStr->zBuf==0 ){
      jsonInit(pStr, ctx);
      jsonAppendChar(pStr, '{');
    }else{
      jsonAppendChar(pStr, ',');
      pStr->pCtx = ctx;
    }
    z = (const char*)sqlite3_value_text(argv[0]);
    n = (u32)sqlite3_value_bytes(argv[0]);
    jsonAppendString(pStr, z, n);
    jsonAppendChar(pStr, ':');
................................................................................
  } aMod[] = {
    { "json_each",            &jsonEachModule               },
    { "json_tree",            &jsonTreeModule               },
  };
#endif
  for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){
    rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg,
                                 SQLITE_UTF8 | SQLITE_DETERMINISTIC, 
                                 (void*)&aFunc[i].flag,
                                 aFunc[i].xFunc, 0, 0);
  }
#ifndef SQLITE_OMIT_WINDOWFUNC
  for(i=0; i<sizeof(aAgg)/sizeof(aAgg[0]) && rc==SQLITE_OK; i++){
    rc = sqlite3_create_window_function(db, aAgg[i].zName, aAgg[i].nArg,
                                 SQLITE_UTF8 | SQLITE_DETERMINISTIC, 0,
                                 aAgg[i].xStep, aAgg[i].xFinal,
                                 aAgg[i].xValue, jsonGroupInverse, 0);
  }
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
  for(i=0; i<sizeof(aMod)/sizeof(aMod[0]) && rc==SQLITE_OK; i++){
    rc = sqlite3_create_module(db, aMod[i].zName, aMod[i].pModule, 0);
................................................................................
#ifndef SQLITE_CORE
/*   #include "sqlite3ext.h" */
  SQLITE_EXTENSION_INIT1
#else
/*   #include "sqlite3.h" */
#endif

/* #include <string.h> */
/* #include <assert.h> */
/* #include <stdio.h> */

#ifndef SQLITE_AMALGAMATION
#include "sqlite3rtree.h"
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;


#endif









/*  The following macro is used to suppress compiler warnings.
*/
#ifndef UNUSED_PARAMETER
# define UNUSED_PARAMETER(x) (void)(x)
#endif

................................................................................
  int rc = SQLITE_OK;
  RtreeNode *pNode = 0;

  /* Check if the requested node is already in the hash table. If so,
  ** increase its reference count and return it.
  */
  if( (pNode = nodeHashLookup(pRtree, iNode))!=0 ){
    assert( !pParent || !pNode->pParent || pNode->pParent==pParent );
    if( pParent && !pNode->pParent ){
      if( nodeInParentChain(pNode, pParent) ){
        RTREE_IS_CORRUPT(pRtree);
        return SQLITE_CORRUPT_VTAB;
      }
      pParent->nRef++;
      pNode->pParent = pParent;



    }
    pNode->nRef++;
    *ppNode = pNode;
    return SQLITE_OK;
  }

  if( pRtree->pNodeBlob ){
................................................................................
  int nConstraint = pCur->nConstraint;
  int ii;
  int eInt;
  RtreeSearchPoint x;

  eInt = pRtree->eCoordType==RTREE_COORD_INT32;
  while( (p = rtreeSearchPointFirst(pCur))!=0 && p->iLevel>0 ){

    pNode = rtreeNodeOfFirstSearchPoint(pCur, &rc);
    if( rc ) return rc;
    nCell = NCELL(pNode);
    assert( nCell<200 );

    while( p->iCell<nCell ){
      sqlite3_rtree_dbl rScore = (sqlite3_rtree_dbl)-1;
      u8 *pCellData = pNode->zData + (4+pRtree->nBytesPerCell*p->iCell);
      eWithin = FULLY_WITHIN;
      for(ii=0; ii<nConstraint; ii++){
        RtreeConstraint *pConstraint = pCur->aConstraint + ii;
        if( pConstraint->op>=RTREE_MATCH ){
          rc = rtreeCallbackConstraint(pConstraint, eInt, pCellData, p,
                                       &rScore, &eWithin);
          if( rc ) return rc;
        }else if( p->iLevel==1 ){
          rtreeLeafConstraint(pConstraint, eInt, pCellData, &eWithin);
        }else{
          rtreeNonleafConstraint(pConstraint, eInt, pCellData, &eWithin);
        }
        if( eWithin==NOT_WITHIN ) break;
      }
      p->iCell++;




      if( eWithin==NOT_WITHIN ) continue;

      x.iLevel = p->iLevel - 1;
      if( x.iLevel ){
        x.id = readInt64(pCellData);






        x.iCell = 0;
      }else{
        x.id = p->id;
        x.iCell = p->iCell - 1;
      }
      if( p->iCell>=nCell ){
        RTREE_QUEUE_TRACE(pCur, "POP-S:");
................................................................................

#define RBU_CREATE_STATE \
  "CREATE TABLE IF NOT EXISTS %s.rbu_state(k INTEGER PRIMARY KEY, v)"

typedef struct RbuFrame RbuFrame;
typedef struct RbuObjIter RbuObjIter;
typedef struct RbuState RbuState;

typedef struct rbu_vfs rbu_vfs;
typedef struct rbu_file rbu_file;
typedef struct RbuUpdateStmt RbuUpdateStmt;

#if !defined(SQLITE_AMALGAMATION)
typedef unsigned int u32;
typedef unsigned short u16;
................................................................................
};

struct RbuUpdateStmt {
  char *zMask;                    /* Copy of update mask used with pUpdate */
  sqlite3_stmt *pUpdate;          /* Last update statement (or NULL) */
  RbuUpdateStmt *pNext;
};






/*
** An iterator of this type is used to iterate through all objects in
** the target database that require updating. For each such table, the
** iterator visits, in order:
**
**     * the table itself, 
................................................................................

  /* Statements created by rbuObjIterPrepareAll() */
  int nCol;                       /* Number of columns in current object */
  sqlite3_stmt *pSelect;          /* Source data */
  sqlite3_stmt *pInsert;          /* Statement for INSERT operations */
  sqlite3_stmt *pDelete;          /* Statement for DELETE ops */
  sqlite3_stmt *pTmpInsert;       /* Insert into rbu_tmp_$zDataTbl */




  /* Last UPDATE used (for PK b-tree updates only), or NULL. */
  RbuUpdateStmt *pRbuUpdate;
};

/*
** Values for RbuObjIter.eType
................................................................................
  pUp = pIter->pRbuUpdate;
  while( pUp ){
    RbuUpdateStmt *pTmp = pUp->pNext;
    sqlite3_finalize(pUp->pUpdate);
    sqlite3_free(pUp);
    pUp = pTmp;
  }


  
  pIter->pSelect = 0;
  pIter->pInsert = 0;
  pIter->pDelete = 0;
  pIter->pRbuUpdate = 0;
  pIter->pTmpInsert = 0;
  pIter->nCol = 0;



}

/*
** Clean up any resources allocated as part of the iterator object passed
** as the only argument.
*/
static void rbuObjIterFinalize(RbuObjIter *pIter){
................................................................................
  sqlite3rbu *p = sqlite3_user_data(pCtx);
  const char *zIn;
  assert( argc==1 || argc==2 );

  zIn = (const char*)sqlite3_value_text(argv[0]);
  if( zIn ){
    if( rbuIsVacuum(p) ){
      assert( argc==2 );
      if( 0==sqlite3_value_int(argv[1]) ){
        sqlite3_result_text(pCtx, zIn, -1, SQLITE_STATIC);
      }
    }else{
      if( strlen(zIn)>4 && memcmp("data", zIn, 4)==0 ){
        int i;
        for(i=4; zIn[i]>='0' && zIn[i]<='9'; i++);
        if( zIn[i]=='_' && zIn[i+1] ){
................................................................................
** If an OOM condition is encountered when attempting to allocate memory,
** output variable (*pRc) is set to SQLITE_NOMEM before returning. Otherwise,
** if the allocation succeeds, (*pRc) is left unchanged.
*/
static char *rbuStrndup(const char *zStr, int *pRc){
  char *zRet = 0;

  assert( *pRc==SQLITE_OK );
  if( zStr ){
    size_t nCopy = strlen(zStr) + 1;
    zRet = (char*)sqlite3_malloc64(nCopy);
    if( zRet ){
      memcpy(zRet, zStr, nCopy);
    }else{
      *pRc = SQLITE_NOMEM;

    }
  }

  return zRet;
}

/*
................................................................................
    }
    p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg,
        sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", zIdx)
    );
    while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){
      int iCid = sqlite3_column_int(pXInfo, 1);
      if( iCid>=0 ) pIter->abIndexed[iCid] = 1;



    }
    rbuFinalize(p, pXInfo);
    bIndex = 1;
    pIter->nIndex++;
  }

  if( pIter->eType==RBU_PK_WITHOUT_ROWID ){
................................................................................
    );
  }

  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){
    int iCid = sqlite3_column_int(pXInfo, 1);
    int bDesc = sqlite3_column_int(pXInfo, 3);
    const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4);
    const char *zCol;
    const char *zType;








    if( iCid<0 ){
      /* An integer primary key. If the table has an explicit IPK, use
      ** its name. Otherwise, use "rbu_rowid".  */
      if( pIter->eType==RBU_PK_IPK ){
        int i;
        for(i=0; pIter->abTblPk[i]==0; i++);
        assert( i<pIter->nTblCol );
        zCol = pIter->azTblCol[i];
      }else if( rbuIsVacuum(p) ){
        zCol = "_rowid_";
      }else{
        zCol = "rbu_rowid";
      }
      zType = "INTEGER";
    }else{
      zCol = pIter->azTblCol[iCid];
      zType = pIter->azTblType[iCid];
    }


    zRet = sqlite3_mprintf("%z%s\"%w\" COLLATE %Q", zRet, zCom, zCol, zCollate);

    if( pIter->bUnique==0 || sqlite3_column_int(pXInfo, 5) ){
      const char *zOrder = (bDesc ? " DESC" : "");
      zImpPK = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\"%s", 
          zImpPK, zCom, nBind, zCol, zOrder
      );
    }
    zImpCols = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\" %s COLLATE %Q", 
................................................................................
}

static char *rbuObjIterGetIndexWhere(sqlite3rbu *p, RbuObjIter *pIter){
  sqlite3_stmt *pStmt = 0;
  int rc = p->rc;
  char *zRet = 0;



  if( rc==SQLITE_OK ){
    rc = prepareAndCollectError(p->dbMain, &pStmt, &p->zErrmsg,
        "SELECT trim(sql) FROM sqlite_master WHERE type='index' AND name=?"
    );
  }
  if( rc==SQLITE_OK ){
    int rc2;
    rc = sqlite3_bind_text(pStmt, 1, pIter->zIdx, -1, SQLITE_STATIC);
    if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){
      const char *zSql = (const char*)sqlite3_column_text(pStmt, 0);



      if( zSql ){
        int nParen = 0;           /* Number of open parenthesis */
        int i;


        for(i=0; zSql[i]; i++){
          char c = zSql[i];














          if( c=='(' ){




            nParen++;
          }
          else if( c==')' ){
            nParen--;
            if( nParen==0 ){


              i++;
              break;
            }




          }else if( c=='"' || c=='\'' || c=='`' ){
            for(i++; 1; i++){
              if( zSql[i]==c ){
                if( zSql[i+1]!=c ) break;
                i++;
              }
            }
          }else if( c=='[' ){
            for(i++; 1; i++){
              if( zSql[i]==']' ) break;
            }







          }
        }
        if( zSql[i] ){
          zRet = rbuStrndup(&zSql[i], &rc);
        }

      }
    }

    rc2 = sqlite3_finalize(pStmt);
    if( rc==SQLITE_OK ) rc = rc2;
  }

................................................................................
      char *zImposterPK = 0;      /* Primary key declaration for imposter */
      char *zWhere = 0;           /* WHERE clause on PK columns */
      char *zBind = 0;
      char *zPart = 0;
      int nBind = 0;

      assert( pIter->eType!=RBU_PK_VTAB );

      zCollist = rbuObjIterGetIndexCols(
          p, pIter, &zImposterCols, &zImposterPK, &zWhere, &nBind
      );
      zBind = rbuObjIterGetBindlist(p, nBind);
      zPart = rbuObjIterGetIndexWhere(p, pIter);

      /* Create the imposter table used to write to this index. */
      sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 1);
      sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1,tnum);
      rbuMPrintfExec(p, p->dbMain,
          "CREATE TABLE \"rbu_imp_%w\"( %s, PRIMARY KEY( %s ) ) WITHOUT ROWID",
          zTbl, zImposterCols, zImposterPK
................................................................................
  int nVal,
  sqlite3_value **apVal
){
  sqlite3rbu *p = (sqlite3rbu*)sqlite3_user_data(pCtx);
  sqlite3_stmt *pStmt = 0;
  char *zErrmsg = 0;
  int rc;


  assert( nVal==1 );
  
  rc = prepareFreeAndCollectError(p->dbMain, &pStmt, &zErrmsg, 
      sqlite3_mprintf("SELECT count(*) FROM sqlite_master "
        "WHERE type='index' AND tbl_name = %Q", sqlite3_value_text(apVal[0]))
  );
  if( rc!=SQLITE_OK ){
    sqlite3_result_error(pCtx, zErrmsg, -1);
  }else{
    int nIndex = 0;
................................................................................
    if( SQLITE_ROW==sqlite3_step(pStmt) ){
      nIndex = sqlite3_column_int(pStmt, 0);
    }
    rc = sqlite3_finalize(pStmt);
    if( rc==SQLITE_OK ){
      sqlite3_result_int(pCtx, nIndex);
    }else{
      sqlite3_result_error(pCtx, sqlite3_errmsg(p->dbMain), -1);
    }
  }

  sqlite3_free(zErrmsg);
}

/*
................................................................................
*/
static int sessionBufferGrow(SessionBuffer *p, size_t nByte, int *pRc){
  if( *pRc==SQLITE_OK && (size_t)(p->nAlloc-p->nBuf)<nByte ){
    u8 *aNew;
    i64 nNew = p->nAlloc ? p->nAlloc : 128;
    do {
      nNew = nNew*2;
    }while( (nNew-p->nBuf)<nByte );

    aNew = (u8 *)sqlite3_realloc64(p->aBuf, nNew);
    if( 0==aNew ){
      *pRc = SQLITE_NOMEM;
    }else{
      p->aBuf = aNew;
      p->nAlloc = nNew;
................................................................................
  char *zContent;                 /* content table */ 
  char *zContentRowid;            /* "content_rowid=" option value */ 
  int bColumnsize;                /* "columnsize=" option value (dflt==1) */
  int eDetail;                    /* FTS5_DETAIL_XXX value */
  char *zContentExprlist;
  Fts5Tokenizer *pTok;
  fts5_tokenizer *pTokApi;


  /* Values loaded from the %_config table */
  int iCookie;                    /* Incremented when %_config is modified */
  int pgsz;                       /* Approximate page size used in %_data */
  int nAutomerge;                 /* 'automerge' setting */
  int nCrisisMerge;               /* Maximum allowed segments per level */
  int nUsermerge;                 /* 'usermerge' setting */
................................................................................
*/
static int sqlite3Fts5ExprFirst(Fts5Expr*, Fts5Index *pIdx, i64 iMin, int bDesc);
static int sqlite3Fts5ExprNext(Fts5Expr*, i64 iMax);
static int sqlite3Fts5ExprEof(Fts5Expr*);
static i64 sqlite3Fts5ExprRowid(Fts5Expr*);

static void sqlite3Fts5ExprFree(Fts5Expr*);


/* Called during startup to register a UDF with SQLite */
static int sqlite3Fts5ExprInit(Fts5Global*, sqlite3*);

static int sqlite3Fts5ExprPhraseCount(Fts5Expr*);
static int sqlite3Fts5ExprPhraseSize(Fts5Expr*, int iPhrase);
static int sqlite3Fts5ExprPoslist(Fts5Expr*, int, const u8 **);
................................................................................
  assert( stateno <= fts5YY_SHIFT_COUNT );
#if defined(fts5YYCOVERAGE)
  fts5yycoverage[stateno][iLookAhead] = 1;
#endif
  do{
    i = fts5yy_shift_ofst[stateno];
    assert( i>=0 );

    /* assert( i+fts5YYNFTS5TOKEN<=(int)fts5YY_NLOOKAHEAD ); */
    assert( iLookAhead!=fts5YYNOCODE );
    assert( iLookAhead < fts5YYNFTS5TOKEN );
    i += iLookAhead;

    if( i>=fts5YY_NLOOKAHEAD || fts5yy_lookahead[i]!=iLookAhead ){
#ifdef fts5YYFALLBACK
      fts5YYCODETYPE iFallback;            /* Fallback token */
      if( iLookAhead<sizeof(fts5yyFallback)/sizeof(fts5yyFallback[0])
             && (iFallback = fts5yyFallback[iLookAhead])!=0 ){

#ifndef NDEBUG
        if( fts5yyTraceFILE ){
          fprintf(fts5yyTraceFILE, "%sFALLBACK %s => %s\n",
             fts5yyTracePrompt, fts5yyTokenName[iLookAhead], fts5yyTokenName[iFallback]);
        }
#endif
        assert( fts5yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
................................................................................
        iLookAhead = iFallback;
        continue;
      }
#endif
#ifdef fts5YYWILDCARD
      {
        int j = i - iLookAhead + fts5YYWILDCARD;
        if( 
#if fts5YY_SHIFT_MIN+fts5YYWILDCARD<0
          j>=0 &&
#endif
#if fts5YY_SHIFT_MAX+fts5YYWILDCARD>=fts5YY_ACTTAB_COUNT
          j<fts5YY_ACTTAB_COUNT &&
#endif
          j<(int)(sizeof(fts5yy_lookahead)/sizeof(fts5yy_lookahead[0])) &&
          fts5yy_lookahead[j]==fts5YYWILDCARD && iLookAhead>0
        ){
#ifndef NDEBUG
          if( fts5yyTraceFILE ){
            fprintf(fts5yyTraceFILE, "%sWILDCARD %s => %s\n",
               fts5yyTracePrompt, fts5yyTokenName[iLookAhead],
               fts5yyTokenName[fts5YYWILDCARD]);
          }
#endif /* NDEBUG */
          return fts5yy_action[j];
        }
      }
#endif /* fts5YYWILDCARD */
      return fts5yy_default[stateno];
    }else{

      return fts5yy_action[i];
    }
  }while(1);
}

/*
** Find the appropriate action for a parser given the non-terminal
................................................................................

/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
static int sqlite3Fts5ParserFallback(int iToken){
#ifdef fts5YYFALLBACK
  if( iToken<(int)(sizeof(fts5yyFallback)/sizeof(fts5yyFallback[0])) ){
    return fts5yyFallback[iToken];
  }
#else
  (void)iToken;
#endif
  return 0;
}

/*
................................................................................
  );

  assert( zSql || rc==SQLITE_NOMEM );
  if( zSql ){
    rc = sqlite3_declare_vtab(pConfig->db, zSql);
    sqlite3_free(zSql);
  }
  
  return rc;
}

/*
** Tokenize the text passed via the second and third arguments.
**
** The callback is invoked once for each token in the input text. The
................................................................................
static void sqlite3Fts5ExprFree(Fts5Expr *p){
  if( p ){
    sqlite3Fts5ParseNodeFree(p->pRoot);
    sqlite3_free(p->apExprPhrase);
    sqlite3_free(p);
  }
}





































/*
** Argument pTerm must be a synonym iterator. Return the current rowid
** that it points to.
*/
static i64 fts5ExprSynonymRowid(Fts5ExprTerm *pTerm, int bDesc, int *pbEof){
  i64 iRet = 0;
................................................................................
      }
      if( rc!=SQLITE_OK ){
        sqlite3_free(pRet);
        pRet = 0;
      }else{
        /* TODO1: Fix this */
        pRet->p[nByte] = 0x00;

        pRet->szLeaf = fts5GetU16(&pRet->p[2]);
      }
    }
    p->rc = rc;
    p->nRead++;
  }

................................................................................
static void fts5DataRelease(Fts5Data *pData){
  sqlite3_free(pData);
}

static Fts5Data *fts5LeafRead(Fts5Index *p, i64 iRowid){
  Fts5Data *pRet = fts5DataRead(p, iRowid);
  if( pRet ){
    if( pRet->szLeaf>pRet->nn ){
      p->rc = FTS5_CORRUPT;
      fts5DataRelease(pRet);
      pRet = 0;
    }
  }
  return pRet;
}
................................................................................
        int nCopy;
        u8 *aCopy;

        i64 iPrev = 0;
        Fts5PoslistWriter writer;
        memset(&writer, 0, sizeof(writer));




        fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid);
        fts5BufferZero(&tmp);
        sqlite3Fts5BufferSize(&p->rc, &tmp, i1.nPoslist + i2.nPoslist);
        if( p->rc ) break;

        sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1);
        sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2);
        assert_nc( iPos1>=0 && iPos2>=0 );

        if( iPos1<iPos2 ){
................................................................................
          nCopy = i2.nPoslist - iOff2;
        }
        if( nCopy>0 ){
          fts5BufferSafeAppendBlob(&tmp, aCopy, nCopy);
        }

        /* WRITEPOSLISTSIZE */






        fts5BufferSafeAppendVarint(&out, tmp.n * 2);
        fts5BufferSafeAppendBlob(&out, tmp.p, tmp.n);
        fts5DoclistIterNext(&i1);
        fts5DoclistIterNext(&i2);
        assert_nc( out.n<=(p1->n+p2->n+9) );
        if( i1.aPoslist==0 || i2.aPoslist==0 ) break;
        assert( out.n<=((i1.aPoslist-p1->p) + (i2.aPoslist-p2->p)+9+10+10) );
................................................................................
#endif
}

/*
** Implementation of the xBestIndex method for FTS5 tables. Within the 
** WHERE constraint, it searches for the following:
**
**   1. A MATCH constraint against the special column.
**   2. A MATCH constraint against the "rank" column.

**   3. An == constraint against the rowid column.
**   4. A < or <= constraint against the rowid column.
**   5. A > or >= constraint against the rowid column.
**
** Within the ORDER BY, either:
**
**   5. ORDER BY rank [ASC|DESC]
**   6. ORDER BY rowid [ASC|DESC]





















**
** Costs are assigned as follows:
**
**  a) If an unusable MATCH operator is present in the WHERE clause, the
**     cost is unconditionally set to 1e50 (a really big number).
**
**  a) If a MATCH operator is present, the cost depends on the other
................................................................................
** Costs are not modified by the ORDER BY clause.
*/
static int fts5BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){
  Fts5Table *pTab = (Fts5Table*)pVTab;
  Fts5Config *pConfig = pTab->pConfig;
  const int nCol = pConfig->nCol;
  int idxFlags = 0;               /* Parameter passed through to xFilter() */
  int bHasMatch;


  int iNext;
  int i;

  struct Constraint {
    int op;                       /* Mask against sqlite3_index_constraint.op */
    int fts5op;                   /* FTS5 mask for idxFlags */
    int iCol;                     /* 0==rowid, 1==tbl, 2==rank */
    int omit;                     /* True to omit this if found */
    int iConsIndex;               /* Index in pInfo->aConstraint[] */
  } aConstraint[] = {
    {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, 
                                    FTS5_BI_MATCH,    1, 1, -1},
    {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, 
                                    FTS5_BI_RANK,     2, 1, -1},
    {SQLITE_INDEX_CONSTRAINT_EQ,    FTS5_BI_ROWID_EQ, 0, 0, -1},
    {SQLITE_INDEX_CONSTRAINT_LT|SQLITE_INDEX_CONSTRAINT_LE, 
                                    FTS5_BI_ROWID_LE, 0, 0, -1},
    {SQLITE_INDEX_CONSTRAINT_GT|SQLITE_INDEX_CONSTRAINT_GE, 
                                    FTS5_BI_ROWID_GE, 0, 0, -1},
  };

  int aColMap[3];
  aColMap[0] = -1;
  aColMap[1] = nCol;
  aColMap[2] = nCol+1;

  assert( SQLITE_INDEX_CONSTRAINT_EQ<SQLITE_INDEX_CONSTRAINT_MATCH );
  assert( SQLITE_INDEX_CONSTRAINT_GT<SQLITE_INDEX_CONSTRAINT_MATCH );
  assert( SQLITE_INDEX_CONSTRAINT_LE<SQLITE_INDEX_CONSTRAINT_MATCH );
  assert( SQLITE_INDEX_CONSTRAINT_GE<SQLITE_INDEX_CONSTRAINT_MATCH );
  assert( SQLITE_INDEX_CONSTRAINT_LE<SQLITE_INDEX_CONSTRAINT_MATCH );

  /* Set idxFlags flags for all WHERE clause terms that will be used. */











  for(i=0; i<pInfo->nConstraint; i++){
    struct sqlite3_index_constraint *p = &pInfo->aConstraint[i];
    int iCol = p->iColumn;

    if( (p->op==SQLITE_INDEX_CONSTRAINT_MATCH && iCol>=0 && iCol<=nCol)
     || (p->op==SQLITE_INDEX_CONSTRAINT_EQ && iCol==nCol)
    ){
      /* A MATCH operator or equivalent */
      if( p->usable ){
        idxFlags = (idxFlags & 0xFFFF) | FTS5_BI_MATCH | (iCol << 16);
        aConstraint[0].iConsIndex = i;
      }else{
        /* As there exists an unusable MATCH constraint this is an 
        ** unusable plan. Set a prohibitively high cost. */
        pInfo->estimatedCost = 1e50;


        return SQLITE_OK;












      }






    }else if( p->op<=SQLITE_INDEX_CONSTRAINT_MATCH ){











      int j;
      for(j=1; j<ArraySize(aConstraint); j++){
        struct Constraint *pC = &aConstraint[j];
        if( iCol==aColMap[pC->iCol] && (p->op & pC->op) && p->usable ){
          pC->iConsIndex = i;
          idxFlags |= pC->fts5op;











        }
      }
    }
  }


  /* Set idxFlags flags for the ORDER BY clause */
  if( pInfo->nOrderBy==1 ){
    int iSort = pInfo->aOrderBy[0].iColumn;
    if( iSort==(pConfig->nCol+1) && BitFlagTest(idxFlags, FTS5_BI_MATCH) ){
      idxFlags |= FTS5_BI_ORDER_RANK;
    }else if( iSort==-1 ){
      idxFlags |= FTS5_BI_ORDER_ROWID;
    }
    if( BitFlagTest(idxFlags, FTS5_BI_ORDER_RANK|FTS5_BI_ORDER_ROWID) ){
      pInfo->orderByConsumed = 1;
      if( pInfo->aOrderBy[0].desc ){
        idxFlags |= FTS5_BI_ORDER_DESC;
      }
    }
  }

  /* Calculate the estimated cost based on the flags set in idxFlags. */
  bHasMatch = BitFlagTest(idxFlags, FTS5_BI_MATCH);
  if( BitFlagTest(idxFlags, FTS5_BI_ROWID_EQ) ){
    pInfo->estimatedCost = bHasMatch ? 100.0 : 10.0;
    if( bHasMatch==0 ) fts5SetUniqueFlag(pInfo);
  }else if( BitFlagAllTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){

    pInfo->estimatedCost = bHasMatch ? 500.0 : 250000.0;
  }else if( BitFlagTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){

    pInfo->estimatedCost = bHasMatch ? 750.0 : 750000.0;
  }else{
    pInfo->estimatedCost = bHasMatch ? 1000.0 : 1000000.0;
  }

  /* Assign argvIndex values to each constraint in use. */
  iNext = 1;
  for(i=0; i<ArraySize(aConstraint); i++){
    struct Constraint *pC = &aConstraint[i];
    if( pC->iConsIndex>=0 ){
      pInfo->aConstraintUsage[pC->iConsIndex].argvIndex = iNext++;
      pInfo->aConstraintUsage[pC->iConsIndex].omit = (unsigned char)pC->omit;
    }
  }

  pInfo->idxNum = idxFlags;
  return SQLITE_OK;
}

static int fts5NewTransaction(Fts5FullTable *pTab){
................................................................................
  ** handles here, rather than preparing a new one for each query. But that
  ** is not possible as SQLite reference counts the virtual table objects.
  ** And since the statement required here reads from this very virtual 
  ** table, saving it creates a circular reference.
  **
  ** If SQLite a built-in statement cache, this wouldn't be a problem. */
  rc = fts5PrepareStatement(&pSorter->pStmt, pConfig,
      "SELECT rowid, rank FROM %Q.%Q ORDER BY %s(%s%s%s) %s",
      pConfig->zDb, pConfig->zName, zRank, pConfig->zName,
      (zRankArgs ? ", " : ""),
      (zRankArgs ? zRankArgs : ""),
      bDesc ? "DESC" : "ASC"
  );

  pCsr->pSorter = pSorter;
................................................................................

  while( z[0]==' ' ) z++;
  for(n=0; z[n] && z[n]!=' '; n++);

  assert( pTab->p.base.zErrMsg==0 );
  pCsr->ePlan = FTS5_PLAN_SPECIAL;

  if( 0==sqlite3_strnicmp("reads", z, n) ){
    pCsr->iSpecial = sqlite3Fts5IndexReads(pTab->p.pIndex);
  }
  else if( 0==sqlite3_strnicmp("id", z, n) ){
    pCsr->iSpecial = pCsr->iCsrId;
  }
  else{
    /* An unrecognized directive. Return an error message. */
    pTab->p.base.zErrMsg = sqlite3_mprintf("unknown special query: %.*s", n, z);
    rc = SQLITE_ERROR;
  }
................................................................................
**   1. Full-text search using a MATCH operator.
**   2. A by-rowid lookup.
**   3. A full-table scan.
*/
static int fts5FilterMethod(
  sqlite3_vtab_cursor *pCursor,   /* The cursor used for this query */
  int idxNum,                     /* Strategy index */
  const char *zUnused,            /* Unused */
  int nVal,                       /* Number of elements in apVal */
  sqlite3_value **apVal           /* Arguments for the indexing scheme */
){
  Fts5FullTable *pTab = (Fts5FullTable*)(pCursor->pVtab);
  Fts5Config *pConfig = pTab->p.pConfig;
  Fts5Cursor *pCsr = (Fts5Cursor*)pCursor;
  int rc = SQLITE_OK;             /* Error code */
  int iVal = 0;                   /* Counter for apVal[] */
  int bDesc;                      /* True if ORDER BY [rank|rowid] DESC */
  int bOrderByRank;               /* True if ORDER BY rank */
  sqlite3_value *pMatch = 0;      /* <tbl> MATCH ? expression (or NULL) */
  sqlite3_value *pRank = 0;       /* rank MATCH ? expression (or NULL) */
  sqlite3_value *pRowidEq = 0;    /* rowid = ? expression (or NULL) */
  sqlite3_value *pRowidLe = 0;    /* rowid <= ? expression (or NULL) */
  sqlite3_value *pRowidGe = 0;    /* rowid >= ? expression (or NULL) */
  int iCol;                       /* Column on LHS of MATCH operator */
  char **pzErrmsg = pConfig->pzErrmsg;

  UNUSED_PARAM(zUnused);
  UNUSED_PARAM(nVal);

  if( pCsr->ePlan ){
    fts5FreeCursorComponents(pCsr);
    memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan-(u8*)pCsr));
  }

  assert( pCsr->pStmt==0 );
  assert( pCsr->pExpr==0 );
  assert( pCsr->csrflags==0 );
  assert( pCsr->pRank==0 );
  assert( pCsr->zRank==0 );
  assert( pCsr->zRankArgs==0 );


  assert( pzErrmsg==0 || pzErrmsg==&pTab->p.base.zErrMsg );
  pConfig->pzErrmsg = &pTab->p.base.zErrMsg;

  /* Decode the arguments passed through to this function.
  **
  ** Note: The following set of if(...) statements must be in the same
  ** order as the corresponding entries in the struct at the top of
  ** fts5BestIndexMethod().  */
  if( BitFlagTest(idxNum, FTS5_BI_MATCH) ) pMatch = apVal[iVal++];
  if( BitFlagTest(idxNum, FTS5_BI_RANK) ) pRank = apVal[iVal++];


































  if( BitFlagTest(idxNum, FTS5_BI_ROWID_EQ) ) pRowidEq = apVal[iVal++];


  if( BitFlagTest(idxNum, FTS5_BI_ROWID_LE) ) pRowidLe = apVal[iVal++];


  if( BitFlagTest(idxNum, FTS5_BI_ROWID_GE) ) pRowidGe = apVal[iVal++];
  iCol = (idxNum>>16);
  assert( iCol>=0 && iCol<=pConfig->nCol );
  assert( iVal==nVal );



  bOrderByRank = ((idxNum & FTS5_BI_ORDER_RANK) ? 1 : 0);
  pCsr->bDesc = bDesc = ((idxNum & FTS5_BI_ORDER_DESC) ? 1 : 0);

  /* Set the cursor upper and lower rowid limits. Only some strategies 
  ** actually use them. This is ok, as the xBestIndex() method leaves the
  ** sqlite3_index_constraint.omit flag clear for range constraints
  ** on the rowid field.  */
................................................................................
    /* If pSortCsr is non-NULL, then this call is being made as part of 
    ** processing for a "... MATCH <expr> ORDER BY rank" query (ePlan is
    ** set to FTS5_PLAN_SORTED_MATCH). pSortCsr is the cursor that will
    ** return results to the user for this query. The current cursor 
    ** (pCursor) is used to execute the query issued by function 
    ** fts5CursorFirstSorted() above.  */
    assert( pRowidEq==0 && pRowidLe==0 && pRowidGe==0 && pRank==0 );
    assert( nVal==0 && pMatch==0 && bOrderByRank==0 && bDesc==0 );
    assert( pCsr->iLastRowid==LARGEST_INT64 );
    assert( pCsr->iFirstRowid==SMALLEST_INT64 );
    if( pTab->pSortCsr->bDesc ){
      pCsr->iLastRowid = pTab->pSortCsr->iFirstRowid;
      pCsr->iFirstRowid = pTab->pSortCsr->iLastRowid;
    }else{
      pCsr->iLastRowid = pTab->pSortCsr->iLastRowid;
      pCsr->iFirstRowid = pTab->pSortCsr->iFirstRowid;
    }
    pCsr->ePlan = FTS5_PLAN_SOURCE;
    pCsr->pExpr = pTab->pSortCsr->pExpr;
    rc = fts5CursorFirst(pTab, pCsr, bDesc);
  }else if( pMatch ){
    const char *zExpr = (const char*)sqlite3_value_text(apVal[0]);
    if( zExpr==0 ) zExpr = "";

    rc = fts5CursorParseRank(pConfig, pCsr, pRank);
    if( rc==SQLITE_OK ){
      if( zExpr[0]=='*' ){
        /* The user has issued a query of the form "MATCH '*...'". This
        ** indicates that the MATCH expression is not a full text query,
        ** but a request for an internal parameter.  */
        rc = fts5SpecialMatch(pTab, pCsr, &zExpr[1]);
      }else{
        char **pzErr = &pTab->p.base.zErrMsg;
        rc = sqlite3Fts5ExprNew(pConfig, iCol, zExpr, &pCsr->pExpr, pzErr);
        if( rc==SQLITE_OK ){
          if( bOrderByRank ){
            pCsr->ePlan = FTS5_PLAN_SORTED_MATCH;
            rc = fts5CursorFirstSorted(pTab, pCsr, bDesc);
          }else{
            pCsr->ePlan = FTS5_PLAN_MATCH;
            rc = fts5CursorFirst(pTab, pCsr, bDesc);
          }
        }
      }
    }
  }else if( pConfig->zContent==0 ){
    *pConfig->pzErrmsg = sqlite3_mprintf(
        "%s: table does not support scanning", pConfig->zName
    );
    rc = SQLITE_ERROR;
................................................................................
    ** by rowid (ePlan==FTS5_PLAN_ROWID).  */
    pCsr->ePlan = (pRowidEq ? FTS5_PLAN_ROWID : FTS5_PLAN_SCAN);
    rc = sqlite3Fts5StorageStmt(
        pTab->pStorage, fts5StmtType(pCsr), &pCsr->pStmt, &pTab->p.base.zErrMsg
    );
    if( rc==SQLITE_OK ){
      if( pCsr->ePlan==FTS5_PLAN_ROWID ){
        sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]);
      }else{
        sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iFirstRowid);
        sqlite3_bind_int64(pCsr->pStmt, 2, pCsr->iLastRowid);
      }
      rc = fts5NextMethod(pCursor);
    }
  }



  pConfig->pzErrmsg = pzErrmsg;
  return rc;
}

/* 
** This is the xEof method of the virtual table. SQLite calls this 
** routine to find out if it has reached the end of a result set.
................................................................................
  i64 iCsrId;

  assert( argc>=1 );
  pAux = (Fts5Auxiliary*)sqlite3_user_data(context);
  iCsrId = sqlite3_value_int64(argv[0]);

  pCsr = fts5CursorFromCsrid(pAux->pGlobal, iCsrId);
  if( pCsr==0 ){
    char *zErr = sqlite3_mprintf("no such cursor: %lld", iCsrId);
    sqlite3_result_error(context, zErr, -1);
    sqlite3_free(zErr);
  }else{
    fts5ApiInvoke(pAux, pCsr, context, argc-1, &argv[1]);
  }
}
................................................................................
static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "fts5: 2019-07-08 13:45:02 8fb0c6d5a38e77aa4c5f394fb8af1b0c7c6a4790e932aabc213a3078ee9acaf6", -1, SQLITE_TRANSIENT);
}

/*
** Return true if zName is the extension on one of the shadow tables used
** by this module.
*/
static int fts5ShadowName(const char *zName){
................................................................................
    }

    if( zSql==0 ){
      rc = SQLITE_NOMEM;
    }else{
      int f = SQLITE_PREPARE_PERSISTENT;
      if( eStmt>FTS5_STMT_LOOKUP ) f |= SQLITE_PREPARE_NO_VTAB;

      rc = sqlite3_prepare_v3(pC->db, zSql, -1, f, &p->aStmt[eStmt], 0);

      sqlite3_free(zSql);
      if( rc!=SQLITE_OK && pzErrMsg ){
        *pzErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pC->db));
      }
    }
  }

................................................................................
#endif
  return rc;
}
#endif /* SQLITE_CORE */
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */

/************** End of stmt.c ************************************************/
#if __LINE__!=223775
#undef SQLITE_SOURCE_ID
#define SQLITE_SOURCE_ID      "2019-07-08 13:45:02 8fb0c6d5a38e77aa4c5f394fb8af1b0c7c6a4790e932aabc213a3078ee9aalt2"
#endif
/* Return the source-id for this library */
SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/************************** End of sqlite3.c ******************************/

/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.30.0.  By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other
................................................................................
  "ENABLE_SORTER_REFERENCES",
#endif
#if SQLITE_ENABLE_SQLLOG
  "ENABLE_SQLLOG",
#endif
#if defined(SQLITE_ENABLE_STAT4)
  "ENABLE_STAT4",


#endif
#if SQLITE_ENABLE_STMTVTAB
  "ENABLE_STMTVTAB",
#endif
#if SQLITE_ENABLE_STMT_SCANSTATUS
  "ENABLE_STMT_SCANSTATUS",
#endif
................................................................................
** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.30.0"
#define SQLITE_VERSION_NUMBER 3030000
#define SQLITE_SOURCE_ID      "2019-09-28 18:28:19 661a3789eb329a2487855e49c31067a9dde4c91c1a3a65b65375d079f906b1da"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** The first argument is an integer which is 0 to disable triggers,
** positive to enable triggers or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which
** is written 0 or 1 to indicate whether triggers are disabled or enabled
** following this call.  The second parameter may be a NULL pointer, in
** which case the trigger setting is not reported back. </dd>
**
** [[SQLITE_DBCONFIG_ENABLE_VIEW]]
** <dt>SQLITE_DBCONFIG_ENABLE_VIEW</dt>
** <dd> ^This option is used to enable or disable [CREATE VIEW | views].
** There should be two additional arguments.
** The first argument is an integer which is 0 to disable views,
** positive to enable views or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which
** is written 0 or 1 to indicate whether views are disabled or enabled
** following this call.  The second parameter may be a NULL pointer, in
** which case the view setting is not reported back. </dd>
**
** [[SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER]]
** <dt>SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER</dt>
** <dd> ^This option is used to enable or disable the
** [fts3_tokenizer()] function which is part of the
** [FTS3] full-text search engine extension.
** There should be two additional arguments.
** The first argument is an integer which is 0 to disable fts3_tokenizer() or
................................................................................
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */
#define SQLITE_DBCONFIG_RESET_DATABASE        1009 /* int int* */
#define SQLITE_DBCONFIG_DEFENSIVE             1010 /* int int* */
#define SQLITE_DBCONFIG_WRITABLE_SCHEMA       1011 /* int int* */
#define SQLITE_DBCONFIG_LEGACY_ALTER_TABLE    1012 /* int int* */
#define SQLITE_DBCONFIG_DQS_DML               1013 /* int int* */
#define SQLITE_DBCONFIG_DQS_DDL               1014 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_VIEW           1015 /* int int* */
#define SQLITE_DBCONFIG_MAX                   1015 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** WHERE clause might influence the choice of query plan for a statement,
** then the statement will be automatically recompiled, as if there had been 
** a schema change, on the first  [sqlite3_step()] call following any change
** to the [sqlite3_bind_text | bindings] of that [parameter]. 
** ^The specific value of WHERE-clause [parameter] might influence the 
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
** and the [SQLITE_ENABLE_STAT4] compile-time option is enabled.
** </li>
** </ol>
**
** <p>^sqlite3_prepare_v3() differs from sqlite3_prepare_v2() only in having
** the extra prepFlags parameter, which is a bit array consisting of zero or
** more of the [SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_*] flags.  ^The
** sqlite3_prepare_v2() interface works exactly the same as
................................................................................
** ^The fourth parameter may optionally be ORed with [SQLITE_DETERMINISTIC]
** to signal that the function will always return the same result given
** the same inputs within a single SQL statement.  Most SQL functions are
** deterministic.  The built-in [random()] SQL function is an example of a
** function that is not deterministic.  The SQLite query planner is able to
** perform additional optimizations on deterministic functions, so use
** of the [SQLITE_DETERMINISTIC] flag is recommended where possible.
**
** ^The fourth parameter may also optionally include the [SQLITE_DIRECTONLY]
** flag, which if present prevents the function from being invoked from
** within VIEWs or TRIGGERs.  For security reasons, the [SQLITE_DIRECTONLY]
** flag is recommended for any application-defined SQL function that has
** side-effects.
**
** ^(The fifth parameter is an arbitrary pointer.  The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
** ^The sixth, seventh and eighth parameters passed to the three
** "sqlite3_create_function*" functions, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
................................................................................
/*
** CAPI3REF: Function Flags
**
** These constants may be ORed together with the 
** [SQLITE_UTF8 | preferred text encoding] as the fourth argument
** to [sqlite3_create_function()], [sqlite3_create_function16()], or
** [sqlite3_create_function_v2()].
**
** The SQLITE_DETERMINISTIC flag means that the new function will always
** maps the same inputs into the same output.  The abs() function is
** deterministic, for example, but randomblob() is not.
**
** The SQLITE_DIRECTONLY flag means that the function may only be invoked
** from top-level SQL, and cannot be used in VIEWs or TRIGGERs.  This is
** a security feature which is recommended for all 
** [application-defined SQL functions] that have side-effects.  This flag 
** prevents an attacker from adding triggers and views to a schema then 
** tricking a high-privilege application into causing unintended side-effects
** while performing ordinary queries.
**
** The SQLITE_SUBTYPE flag indicates to SQLite that a function may call
** [sqlite3_value_subtype()] to inspect the sub-types of its arguments.
** Specifying this flag makes no difference for scalar or aggregate user
** functions. However, if it is not specified for a user-defined window
** function, then any sub-types belonging to arguments passed to the window
** function may be discarded before the window function is called (i.e.
** sqlite3_value_subtype() will always return 0).
*/
#define SQLITE_DETERMINISTIC    0x000000800
#define SQLITE_DIRECTONLY       0x000080000
#define SQLITE_SUBTYPE          0x000100000

/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated].  In order to maintain
** backwards compatibility with older code, these functions continue 
................................................................................
** is a pointer to a destructor for the pClientData.  ^SQLite will
** invoke the destructor function (if it is not NULL) when SQLite
** no longer needs the pClientData pointer.  ^The destructor will also
** be invoked if the call to sqlite3_create_module_v2() fails.
** ^The sqlite3_create_module()
** interface is equivalent to sqlite3_create_module_v2() with a NULL
** destructor.
**
** ^If the third parameter (the pointer to the sqlite3_module object) is
** NULL then no new module is create and any existing modules with the
** same name are dropped.
**
** See also: [sqlite3_drop_modules()]
*/
SQLITE_API int sqlite3_create_module(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData          /* Client data for xCreate/xConnect */
);
................................................................................
SQLITE_API int sqlite3_create_module_v2(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData,         /* Client data for xCreate/xConnect */
  void(*xDestroy)(void*)     /* Module destructor function */
);

/*
** CAPI3REF: Remove Unnecessary Virtual Table Implementations
** METHOD: sqlite3
**
** ^The sqlite3_drop_modules(D,L) interface removes all virtual
** table modules from database connection D except those named on list L.
** The L parameter must be either NULL or a pointer to an array of pointers
** to strings where the array is terminated by a single NULL pointer.
** ^If the L parameter is NULL, then all virtual table modules are removed.
**
** See also: [sqlite3_create_module()]
*/
SQLITE_API int sqlite3_drop_modules(
  sqlite3 *db,                /* Remove modules from this connection */
  const char **azKeep         /* Except, do not remove the ones named here */
);

/*
** CAPI3REF: Virtual Table Instance Object
** KEYWORDS: sqlite3_vtab
**
** Every [virtual table module] implementation uses a subclass
** of this object to describe a particular instance
................................................................................
** without notice.  These values are for testing purposes only.
** Applications should not use any of these parameters or the
** [sqlite3_test_control()] interface.
*/
#define SQLITE_TESTCTRL_FIRST                    5
#define SQLITE_TESTCTRL_PRNG_SAVE                5
#define SQLITE_TESTCTRL_PRNG_RESTORE             6
#define SQLITE_TESTCTRL_PRNG_RESET               7  /* NOT USED */
#define SQLITE_TESTCTRL_BITVEC_TEST              8
#define SQLITE_TESTCTRL_FAULT_INSTALL            9
#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS     10
#define SQLITE_TESTCTRL_PENDING_BYTE            11
#define SQLITE_TESTCTRL_ASSERT                  12
#define SQLITE_TESTCTRL_ALWAYS                  13
#define SQLITE_TESTCTRL_RESERVE                 14
................................................................................
#define SQLITE_TESTCTRL_VDBE_COVERAGE           21
#define SQLITE_TESTCTRL_BYTEORDER               22
#define SQLITE_TESTCTRL_ISINIT                  23
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_PARSER_COVERAGE         26
#define SQLITE_TESTCTRL_RESULT_INTREAL          27
#define SQLITE_TESTCTRL_PRNG_SEED               28
#define SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS     29
#define SQLITE_TESTCTRL_LAST                    29  /* Largest TESTCTRL */

/*
** CAPI3REF: SQL Keyword Checking
**
** These routines provide access to the set of SQL language keywords 
** recognized by SQLite.  Applications can uses these routines to determine
** whether or not a specific identifier needs to be escaped (for example,
................................................................................
** that vary from one machine to the next.
**
** Ticket #3860:  The llvm-gcc-4.2 compiler from Apple chokes on
** the ((void*)&((char*)0)[X]) construct.  But MSVC chokes on ((void*)(X)).
** So we have to define the macros in different ways depending on the
** compiler.
*/
#if defined(HAVE_STDINT_H)   /* Use this case if we have ANSI headers */
# define SQLITE_INT_TO_PTR(X)  ((void*)(intptr_t)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(intptr_t)(X))
#elif defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define SQLITE_INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))
#elif !defined(__GNUC__)       /* Works for compilers other than LLVM */
# define SQLITE_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define SQLITE_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))



#else                          /* Generates a warning - but it always works */
# define SQLITE_INT_TO_PTR(X)  ((void*)(X))
# define SQLITE_PTR_TO_INT(X)  ((int)(X))
#endif

/*
** A macro to hint to the compiler that a function should not be
................................................................................
#define TK_ROW                             75
#define TK_ROWS                            76
#define TK_TRIGGER                         77
#define TK_VACUUM                          78
#define TK_VIEW                            79
#define TK_VIRTUAL                         80
#define TK_WITH                            81
#define TK_NULLS                           82
#define TK_FIRST                           83
#define TK_LAST                            84
#define TK_CURRENT                         85
#define TK_FOLLOWING                       86
#define TK_PARTITION                       87
#define TK_PRECEDING                       88
#define TK_RANGE                           89
#define TK_UNBOUNDED                       90
#define TK_EXCLUDE                         91
#define TK_GROUPS                          92
#define TK_OTHERS                          93
#define TK_TIES                            94
#define TK_REINDEX                         95
#define TK_RENAME                          96
#define TK_CTIME_KW                        97
#define TK_ANY                             98
#define TK_BITAND                          99
#define TK_BITOR                          100
#define TK_LSHIFT                         101
#define TK_RSHIFT                         102
#define TK_PLUS                           103
#define TK_MINUS                          104
#define TK_STAR                           105
#define TK_SLASH                          106
#define TK_REM                            107
#define TK_CONCAT                         108
#define TK_COLLATE                        109
#define TK_BITNOT                         110
#define TK_ON                             111
#define TK_INDEXED                        112
#define TK_STRING                         113
#define TK_JOIN_KW                        114
#define TK_CONSTRAINT                     115
#define TK_DEFAULT                        116
#define TK_NULL                           117
#define TK_PRIMARY                        118
#define TK_UNIQUE                         119
#define TK_CHECK                          120
#define TK_REFERENCES                     121
#define TK_AUTOINCR                       122
#define TK_INSERT                         123
#define TK_DELETE                         124
#define TK_UPDATE                         125
#define TK_SET                            126
#define TK_DEFERRABLE                     127
#define TK_FOREIGN                        128
#define TK_DROP                           129
#define TK_UNION                          130
#define TK_ALL                            131
#define TK_EXCEPT                         132
#define TK_INTERSECT                      133
#define TK_SELECT                         134
#define TK_VALUES                         135
#define TK_DISTINCT                       136
#define TK_DOT                            137
#define TK_FROM                           138
#define TK_JOIN                           139
#define TK_USING                          140
#define TK_ORDER                          141
#define TK_GROUP                          142
#define TK_HAVING                         143
#define TK_LIMIT                          144
#define TK_WHERE                          145
#define TK_INTO                           146
#define TK_NOTHING                        147
#define TK_FLOAT                          148
#define TK_BLOB                           149
#define TK_INTEGER                        150
#define TK_VARIABLE                       151
#define TK_CASE                           152
#define TK_WHEN                           153
#define TK_THEN                           154
#define TK_ELSE                           155
#define TK_INDEX                          156
#define TK_ALTER                          157
#define TK_ADD                            158
#define TK_WINDOW                         159
#define TK_OVER                           160
#define TK_FILTER                         161



#define TK_COLUMN                         162
#define TK_AGG_FUNCTION                   163
#define TK_AGG_COLUMN                     164
#define TK_TRUEFALSE                      165
#define TK_ISNOT                          166
#define TK_FUNCTION                       167
#define TK_UMINUS                         168
#define TK_UPLUS                          169
#define TK_TRUTH                          170
#define TK_REGISTER                       171
#define TK_VECTOR                         172
#define TK_SELECT_COLUMN                  173
#define TK_IF_NULL_ROW                    174
#define TK_ASTERISK                       175
#define TK_SPAN                           176
#define TK_SPACE                          177
#define TK_ILLEGAL                        178

/************** End of parse.h ***********************************************/
/************** Continuing where we left off in sqliteInt.h ******************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
................................................................................
# define SQLITE_DEFAULT_MMAP_SIZE 0
#endif
#if SQLITE_DEFAULT_MMAP_SIZE>SQLITE_MAX_MMAP_SIZE
# undef SQLITE_DEFAULT_MMAP_SIZE
# define SQLITE_DEFAULT_MMAP_SIZE SQLITE_MAX_MMAP_SIZE
#endif















/*
** SELECTTRACE_ENABLED will be either 1 or 0 depending on whether or not
** the Select query generator tracing logic is turned on.
*/
#if defined(SQLITE_ENABLE_SELECTTRACE)
# define SELECTTRACE_ENABLED 1
#else
................................................................................
#define OP_Offset         89 /* synopsis: r[P3] = sqlite_offset(P1)        */
#define OP_Column         90 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       91 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     92 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count          93 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie     94
#define OP_SetCookie      95
#define OP_ReopenIdx      96 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead       97 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite      98 /* synopsis: root=P2 iDb=P3                   */
#define OP_BitAnd         99 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr         100 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft     101 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
#define OP_ShiftRight    102 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
#define OP_Add           103 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
#define OP_Subtract      104 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply      105 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide        106 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder     107 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat        108 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_OpenDup       109
#define OP_BitNot        110 /* same as TK_BITNOT, synopsis: r[P2]= ~r[P1] */
#define OP_OpenAutoindex 111 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral 112 /* synopsis: nColumn=P2                       */
#define OP_String8       113 /* same as TK_STRING, synopsis: r[P2]='P4'    */
#define OP_SorterOpen    114
#define OP_SequenceTest  115 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo    116 /* synopsis: P3 columns in r[P2]              */
#define OP_Close         117
#define OP_ColumnsUsed   118
#define OP_SeekHit       119 /* synopsis: seekHit=P2                       */
#define OP_Sequence      120 /* synopsis: r[P2]=cursor[P1].ctr++           */
................................................................................
#define OP_ResetSorter   138
#define OP_CreateBtree   139 /* synopsis: r[P2]=root iDb=P1 flags=P3       */
#define OP_SqlExec       140
#define OP_ParseSchema   141
#define OP_LoadAnalysis  142
#define OP_DropTable     143
#define OP_DropIndex     144

#define OP_DropTrigger   145
#define OP_IntegrityCk   146
#define OP_RowSetAdd     147 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_Real          148 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
#define OP_Param         149
#define OP_FkCounter     150 /* synopsis: fkctr[P1]+=P2                    */
#define OP_MemMax        151 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_OffsetLimit   152 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_AggInverse    153 /* synopsis: accum=r[P3] inverse(r[P2@P5])    */
#define OP_AggStep       154 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep1      155 /* synopsis: accum=r[P3] step(r[P2@P5])       */
................................................................................
/*  40 */ 0x01, 0x23, 0x0b, 0x26, 0x26, 0x01, 0x01, 0x03,\
/*  48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
/*  56 */ 0x0b, 0x0b, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,\
/*  64 */ 0x00, 0x00, 0x02, 0x02, 0x08, 0x00, 0x10, 0x10,\
/*  72 */ 0x10, 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10,\
/*  80 */ 0x10, 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00,\
/*  88 */ 0x12, 0x20, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00,\
/*  96 */ 0x00, 0x00, 0x00, 0x26, 0x26, 0x26, 0x26, 0x26,\
/* 104 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x00, 0x12, 0x00,\
/* 112 */ 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 120 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 128 */ 0x10, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x10,\
/* 136 */ 0x10, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,\
/* 144 */ 0x00, 0x00, 0x00, 0x06, 0x10, 0x10, 0x00, 0x04,\
/* 152 */ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10,\
/* 168 */ 0x00, 0x00, 0x00, 0x00, 0x00,}

/* The sqlite3P2Values() routine is able to run faster if it knows
** the value of the largest JUMP opcode.  The smaller the maximum
** JUMP opcode the better, so the mkopcodeh.tcl script that
................................................................................
#endif
#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_EXPLAIN)
SQLITE_PRIVATE   void sqlite3ExplainBreakpoint(const char*,const char*);
#else
# define sqlite3ExplainBreakpoint(A,B) /*no-op*/
#endif
SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, int addr, u8);
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, int addr, int P1);
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
................................................................................
  struct sqlite3InitInfo {      /* Information used during initialization */
    int newTnum;                /* Rootpage of table being initialized */
    u8 iDb;                     /* Which db file is being initialized */
    u8 busy;                    /* TRUE if currently initializing */
    unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */
    unsigned imposterTable : 1; /* Building an imposter table */
    unsigned reopenMemdb : 1;   /* ATTACH is really a reopen using MemDB */
    char **azInit;              /* "type", "name", and "tbl_name" columns */
  } init;
  int nVdbeActive;              /* Number of VDBEs currently running */
  int nVdbeRead;                /* Number of active VDBEs that read or write */
  int nVdbeWrite;               /* Number of active VDBEs that read and write */
  int nVdbeExec;                /* Number of nested calls to VdbeExec() */
  int nVDestroy;                /* Number of active OP_VDestroy operations */
  int nExtension;               /* Number of loaded extensions */
................................................................................
#define SQLITE_TriggerEQP     0x01000000  /* Show trigger EXPLAIN QUERY PLAN */
#define SQLITE_ResetDatabase  0x02000000  /* Reset the database */
#define SQLITE_LegacyAlter    0x04000000  /* Legacy ALTER TABLE behaviour */
#define SQLITE_NoSchemaError  0x08000000  /* Do not report schema parse errors*/
#define SQLITE_Defensive      0x10000000  /* Input SQL is likely hostile */
#define SQLITE_DqsDDL         0x20000000  /* dbl-quoted strings allowed in DDL*/
#define SQLITE_DqsDML         0x40000000  /* dbl-quoted strings allowed in DML*/
#define SQLITE_EnableView     0x80000000  /* Enable the use of views */

/* Flags used only if debugging */
#define HI(X)  ((u64)(X)<<32)
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       HI(0x0100000) /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    HI(0x0200000) /* Debug listings of VDBE progs */
#define SQLITE_VdbeTrace      HI(0x0400000) /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace HI(0x0800000) /* Trace sqlite3VdbeAddOp() calls */
#define SQLITE_VdbeEQP        HI(0x1000000) /* Debug EXPLAIN QUERY PLAN */
#define SQLITE_ParserTrace    HI(0x2000000) /* PRAGMA parser_trace=ON */
#endif

/*
** Allowed values for sqlite3.mDbFlags
*/
#define DBFLAG_SchemaChange   0x0001  /* Uncommitted Hash table changes */
#define DBFLAG_PreferBuiltin  0x0002  /* Preference to built-in funcs */
................................................................................
#define SQLITE_DistinctOpt    0x0010   /* DISTINCT using indexes */
#define SQLITE_CoverIdxScan   0x0020   /* Covering index scans */
#define SQLITE_OrderByIdxJoin 0x0040   /* ORDER BY of joins via index */
#define SQLITE_Transitive     0x0080   /* Transitive constraints */
#define SQLITE_OmitNoopJoin   0x0100   /* Omit unused tables in joins */
#define SQLITE_CountOfView    0x0200   /* The count-of-view optimization */
#define SQLITE_CursorHints    0x0400   /* Add OP_CursorHint opcodes */
#define SQLITE_Stat4          0x0800   /* Use STAT4 data */
   /* TH3 expects the Stat4   ^^^^^^ value to be 0x0800.  Don't change it */
#define SQLITE_PushDown       0x1000   /* The push-down optimization */
#define SQLITE_SimplifyJoin   0x2000   /* Convert LEFT JOIN to JOIN */
#define SQLITE_SkipScan       0x4000   /* Skip-scans */
#define SQLITE_PropagateConst 0x8000   /* The constant propagation opt */
#define SQLITE_AllOpts        0xffff   /* All optimizations */

/*
................................................................................
** are assert() statements in the code to verify this.
**
** Value constraints (enforced via assert()):
**     SQLITE_FUNC_MINMAX    ==  NC_MinMaxAgg      == SF_MinMaxAgg
**     SQLITE_FUNC_LENGTH    ==  OPFLAG_LENGTHARG
**     SQLITE_FUNC_TYPEOF    ==  OPFLAG_TYPEOFARG
**     SQLITE_FUNC_CONSTANT  ==  SQLITE_DETERMINISTIC from the API
**     SQLITE_FUNC_DIRECT    ==  SQLITE_DIRECTONLY from the API
**     SQLITE_FUNC_ENCMASK   depends on SQLITE_UTF* macros in the API
*/
#define SQLITE_FUNC_ENCMASK  0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */
#define SQLITE_FUNC_LIKE     0x0004 /* Candidate for the LIKE optimization */
#define SQLITE_FUNC_CASE     0x0008 /* Case-sensitive LIKE-type function */
#define SQLITE_FUNC_EPHEM    0x0010 /* Ephemeral.  Delete with VDBE */
#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/
................................................................................
#define SQLITE_FUNC_MINMAX   0x1000 /* True for min() and max() aggregates */
#define SQLITE_FUNC_SLOCHNG  0x2000 /* "Slow Change". Value constant during a
                                    ** single query - might change over time */
#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
#define SQLITE_FUNC_OFFSET   0x8000 /* Built-in sqlite_offset() function */
#define SQLITE_FUNC_WINDOW   0x00010000 /* Built-in window-only function */
#define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */
#define SQLITE_FUNC_DIRECT   0x00080000 /* Not for use in TRIGGERs or VIEWs */
#define SQLITE_FUNC_SUBTYPE  0x00100000 /* Result likely to have sub-type */

/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
** used to create the initializers for the FuncDef structures.
**
**   FUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Used to create a scalar function definition of a function zName
................................................................................
** Each SQLite module (virtual table definition) is defined by an
** instance of the following structure, stored in the sqlite3.aModule
** hash table.
*/
struct Module {
  const sqlite3_module *pModule;       /* Callback pointers */
  const char *zName;                   /* Name passed to create_module() */
  int nRefModule;                      /* Number of pointers to this object */
  void *pAux;                          /* pAux passed to create_module() */
  void (*xDestroy)(void *);            /* Module destructor function */
  Table *pEpoTab;                      /* Eponymous table for this module */
};

/*
** information about each column of an SQL table is held in an instance
................................................................................
** But rather than start with 0 or 1, we begin with 'A'.  That way,
** when multiple affinity types are concatenated into a string and
** used as the P4 operand, they will be more readable.
**
** Note also that the numeric types are grouped together so that testing
** for a numeric type is a single comparison.  And the BLOB type is first.
*/
#define SQLITE_AFF_NONE     0x40  /* '@' */
#define SQLITE_AFF_BLOB     0x41  /* 'A' */
#define SQLITE_AFF_TEXT     0x42  /* 'B' */
#define SQLITE_AFF_NUMERIC  0x43  /* 'C' */
#define SQLITE_AFF_INTEGER  0x44  /* 'D' */
#define SQLITE_AFF_REAL     0x45  /* 'E' */

#define sqlite3IsNumericAffinity(X)  ((X)>=SQLITE_AFF_NUMERIC)

/*
** The SQLITE_AFF_MASK values masks off the significant bits of an
** affinity value.
*/
................................................................................
*/
struct KeyInfo {
  u32 nRef;           /* Number of references to this KeyInfo object */
  u8 enc;             /* Text encoding - one of the SQLITE_UTF* values */
  u16 nKeyField;      /* Number of key columns in the index */
  u16 nAllField;      /* Total columns, including key plus others */
  sqlite3 *db;        /* The database connection */
  u8 *aSortFlags;     /* Sort order for each column. */
  CollSeq *aColl[1];  /* Collating sequence for each term of the key */
};

/*
** Allowed bit values for entries in the KeyInfo.aSortFlags[] array.
*/
#define KEYINFO_ORDER_DESC    0x01    /* DESC sort order */
#define KEYINFO_ORDER_BIGNULL 0x02    /* NULL is larger than any other value */

/*
** This object holds a record which has been parsed out into individual
** fields, for the purposes of doing a comparison.
**
** A record is an object that contains one or more fields of data.
** Records are used to store the content of a table row and to store
** the key of an index.  A blob encoding of a record is created by
................................................................................
  unsigned uniqNotNull:1;  /* True if UNIQUE and NOT NULL for all columns */
  unsigned isResized:1;    /* True if resizeIndexObject() has been called */
  unsigned isCovering:1;   /* True if this is a covering index */
  unsigned noSkipScan:1;   /* Do not try to use skip-scan if true */
  unsigned hasStat1:1;     /* aiRowLogEst values come from sqlite_stat1 */
  unsigned bNoQuery:1;     /* Do not use this index to optimize queries */
  unsigned bAscKeyBug:1;   /* True if the bba7b69f9849b5bf bug applies */
#ifdef SQLITE_ENABLE_STAT4
  int nSample;             /* Number of elements in aSample[] */
  int nSampleCol;          /* Size of IndexSample.anEq[] and so on */
  tRowcnt *aAvgEq;         /* Average nEq values for keys not in aSample */
  IndexSample *aSample;    /* Samples of the left-most key */
  tRowcnt *aiRowEst;       /* Non-logarithmic stat1 data for this index */
  tRowcnt nRowEst0;        /* Non-logarithmic number of rows in the index */
#endif
................................................................................
/* The Index.aiColumn[] values are normally positive integer.  But
** there are some negative values that have special meaning:
*/
#define XN_ROWID     (-1)     /* Indexed column is the rowid */
#define XN_EXPR      (-2)     /* Indexed column is an expression */

/*
** Each sample stored in the sqlite_stat4 table is represented in memory
** using a structure of this type.  See documentation at the top of the
** analyze.c source file for additional information.
*/
struct IndexSample {
  void *p;          /* Pointer to sampled record */
  int n;            /* Size of record in bytes */
  tRowcnt *anEq;    /* Est. number of rows where the key equals this sample */
................................................................................
** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees
** are contained within the same memory allocation.  Note, however, that
** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately
** allocated, regardless of whether or not EP_Reduced is set.
*/
struct Expr {
  u8 op;                 /* Operation performed by this node */
  char affExpr;          /* affinity, or RAISE type */
  u32 flags;             /* Various flags.  EP_* See below */
  union {
    char *zToken;          /* Token value. Zero terminated and dequoted */
    int iValue;            /* Non-negative integer value if EP_IntValue */
  } u;

  /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no
................................................................................
#if SQLITE_MAX_EXPR_DEPTH>0
  int nHeight;           /* Height of the tree headed by this node */
#endif
  int iTable;            /* TK_COLUMN: cursor number of table holding column
                         ** TK_REGISTER: register number
                         ** TK_TRIGGER: 1 -> new, 0 -> old
                         ** EP_Unlikely:  134217728 times likelihood
                         ** TK_IN: ephemerial table holding RHS
                         ** TK_SELECT_COLUMN: Number of columns on the LHS
                         ** TK_SELECT: 1st register of result vector */
  ynVar iColumn;         /* TK_COLUMN: column index.  -1 for rowid.
                         ** TK_VARIABLE: variable number (always >= 1).
                         ** TK_SELECT_COLUMN: column of the result vector */
  i16 iAgg;              /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
  i16 iRightJoinTable;   /* If EP_FromJoin, the right table of the join */
  u8 op2;                /* TK_REGISTER/TK_TRUTH: original value of Expr.op
                         ** TK_COLUMN: the value of p5 for OP_Column
                         ** TK_AGG_FUNCTION: nesting depth */
  AggInfo *pAggInfo;     /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
  union {
    Table *pTab;           /* TK_COLUMN: Table containing column. Can be NULL
                           ** for a column of an index on an expression */
    Window *pWin;          /* EP_WinFunc: Window/Filter defn for a function */
    struct {               /* TK_IN, TK_SELECT, and TK_EXISTS */
      int iAddr;             /* Subroutine entry address */
      int regReturn;         /* Register used to hold return address */
    } sub;
  } y;
};

................................................................................
/*
** The following are the meanings of bits in the Expr.flags field.
** Value restrictions:
**
**          EP_Agg == NC_HasAgg == SF_HasAgg
**          EP_Win == NC_HasWin
*/
#define EP_FromJoin   0x000001 /* Originates in ON/USING clause of outer join */
#define EP_Distinct   0x000002 /* Aggregate function with DISTINCT keyword */
#define EP_HasFunc    0x000004 /* Contains one or more functions of any kind */
#define EP_FixedCol   0x000008 /* TK_Column with a known fixed value */
#define EP_Agg        0x000010 /* Contains one or more aggregate functions */
#define EP_VarSelect  0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted  0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc  0x000080 /* True for an infix function: LIKE, GLOB, etc */
#define EP_Collate    0x000100 /* Tree contains a TK_COLLATE operator */
  /*                  0x000200 Available for reuse */
#define EP_IntValue   0x000400 /* Integer value contained in u.iValue */
#define EP_xIsSelect  0x000800 /* x.pSelect is valid (otherwise x.pList is) */
#define EP_Skip       0x001000 /* Operator does not contribute to affinity */
#define EP_Reduced    0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly  0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
#define EP_Win        0x008000 /* Contains window functions */
#define EP_MemToken   0x010000 /* Need to sqlite3DbFree() Expr.zToken */
#define EP_NoReduce   0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
#define EP_Unlikely   0x040000 /* unlikely() or likelihood() function */
#define EP_ConstFunc  0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
#define EP_CanBeNull  0x100000 /* Can be null despite NOT NULL constraint */
#define EP_Subquery   0x200000 /* Tree contains a TK_SELECT operator */
#define EP_Alias      0x400000 /* Is an alias for a result set column */
#define EP_Leaf       0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */
#define EP_WinFunc   0x1000000 /* TK_FUNCTION with Expr.y.pWin set */
#define EP_Subrtn    0x2000000 /* Uses Expr.y.sub. TK_IN, _SELECT, or _EXISTS */
#define EP_Quoted    0x4000000 /* TK_ID was originally quoted */
#define EP_Static    0x8000000 /* Held in memory not obtained from malloc() */
#define EP_IsTrue   0x10000000 /* Always has boolean value of TRUE */
#define EP_IsFalse  0x20000000 /* Always has boolean value of FALSE */
#define EP_Indirect 0x40000000 /* Contained within a TRIGGER or a VIEW */

/*
** The EP_Propagate mask is a set of properties that automatically propagate
** upwards into parent nodes.
*/
#define EP_Propagate (EP_Collate|EP_Subquery|EP_HasFunc)

................................................................................
#define EXPR_TOKENONLYSIZE      offsetof(Expr,pLeft)   /* Fewer features */

/*
** Flags passed to the sqlite3ExprDup() function. See the header comment
** above sqlite3ExprDup() for details.
*/
#define EXPRDUP_REDUCE         0x0001  /* Used reduced-size Expr nodes */

/*
** True if the expression passed as an argument was a function with
** an OVER() clause (a window function).
*/
#define IsWindowFunc(p) ( \
    ExprHasProperty((p), EP_WinFunc) && p->y.pWin->eFrmType!=TK_FILTER \
)

/*
** A list of expressions.  Each expression may optionally have a
** name.  An expr/name combination can be used in several ways, such
** as the list of "expr AS ID" fields following a "SELECT" or in the
** list of "ID = expr" items in an UPDATE.  A list of expressions can
** also be used as the argument to a function, in which case the a.zName
................................................................................
*/
struct ExprList {
  int nExpr;             /* Number of expressions on the list */
  struct ExprList_item { /* For each expression in the list */
    Expr *pExpr;            /* The parse tree for this expression */
    char *zName;            /* Token associated with this expression */
    char *zSpan;            /* Original text of the expression */
    u8 sortFlags;           /* Mask of KEYINFO_ORDER_* flags */
    unsigned done :1;       /* A flag to indicate when processing is finished */
    unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */
    unsigned reusable :1;   /* Constant expression is reusable */
    unsigned bSorterRef :1; /* Defer evaluation until after sorting */
    unsigned bNulls: 1;     /* True if explicit "NULLS FIRST/LAST" */
    union {
      struct {
        u16 iOrderByCol;      /* For ORDER BY, column number in result set */
        u16 iAlias;           /* Index into Parse.aAlias[] for zName */
      } x;
      int iConstExprReg;      /* Register in which Expr value is cached */
    } u;
................................................................................
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
#define SF_ComplexResult  0x40000  /* Result contains subquery or function */
#define SF_WhereBegin     0x80000  /* Really a WhereBegin() call.  Debug Only */

/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
**     SRT_Union       Store results as a key in a temporary index
................................................................................
/*
** Structure containing global configuration data for the SQLite library.
**
** This structure also contains some state information.
*/
struct Sqlite3Config {
  int bMemstat;                     /* True to enable memory status */
  u8 bCoreMutex;                    /* True to enable core mutexing */
  u8 bFullMutex;                    /* True to enable full mutexing */
  u8 bOpenUri;                      /* True to interpret filenames as URIs */
  u8 bUseCis;                       /* Use covering indices for full-scans */
  u8 bSmallMalloc;                  /* Avoid large memory allocations if true */
  u8 bExtraSchemaChecks;            /* Verify type,name,tbl_name in schema */
  int mxStrlen;                     /* Maximum string length */
  int neverCorrupt;                 /* Database is always well-formed */
  int szLookaside;                  /* Default lookaside buffer size */
  int nLookaside;                   /* Default lookaside buffer count */
  int nStmtSpill;                   /* Stmt-journal spill-to-disk threshold */
  sqlite3_mem_methods m;            /* Low-level memory allocation interface */
  sqlite3_mutex_methods mutex;      /* Low-level mutex interface */
................................................................................
#ifndef SQLITE_UNTESTABLE
  int (*xTestCallback)(int);        /* Invoked by sqlite3FaultSim() */
#endif
  int bLocaltimeFault;              /* True to fail localtime() calls */
  int bInternalFunctions;           /* Internal SQL functions are visible */
  int iOnceResetThreshold;          /* When to reset OP_Once counters */
  u32 szSorterRef;                  /* Min size in bytes to use sorter-refs */
  unsigned int iPrngSeed;           /* Alternative fixed seed for the PRNG */
};

/*
** This macro is used inside of assert() statements to indicate that
** the assert is only valid on a well-formed database.  Instead of:
**
**     assert( X );
................................................................................
struct TreeView {
  int iLevel;             /* Which level of the tree we are on */
  u8  bLine[100];         /* Draw vertical in column i if bLine[i] is true */
};
#endif /* SQLITE_DEBUG */

/*
** This object is used in various ways, most (but not all) related to window
** functions.
**
**   (1) A single instance of this structure is attached to the
**       the Expr.y.pWin field for each window function in an expression tree.
**       This object holds the information contained in the OVER clause,
**       plus additional fields used during code generation.
**
**   (2) All window functions in a single SELECT form a linked-list
**       attached to Select.pWin.  The Window.pFunc and Window.pExpr
**       fields point back to the expression that is the window function.
**
**   (3) The terms of the WINDOW clause of a SELECT are instances of this
**       object on a linked list attached to Select.pWinDefn.
**
**   (4) For an aggregate function with a FILTER clause, an instance
**       of this object is stored in Expr.y.pWin with eFrmType set to
**       TK_FILTER. In this case the only field used is Window.pFilter.
**
** The uses (1) and (2) are really the same Window object that just happens
** to be accessible in two different ways.  Use case (3) are separate objects.
*/
struct Window {
  char *zName;            /* Name of window (may be NULL) */
  char *zBase;            /* Name of base window for chaining (may be NULL) */
  ExprList *pPartition;   /* PARTITION BY clause */
................................................................................
  u8 eFrmType;            /* TK_RANGE, TK_GROUPS, TK_ROWS, or 0 */
  u8 eStart;              /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */
  u8 eEnd;                /* UNBOUNDED, CURRENT, PRECEDING or FOLLOWING */
  u8 bImplicitFrame;      /* True if frame was implicitly specified */
  u8 eExclude;            /* TK_NO, TK_CURRENT, TK_TIES, TK_GROUP, or 0 */
  Expr *pStart;           /* Expression for "<expr> PRECEDING" */
  Expr *pEnd;             /* Expression for "<expr> FOLLOWING" */
  Window **ppThis;        /* Pointer to this object in Select.pWin list */
  Window *pNextWin;       /* Next window function belonging to this SELECT */
  Expr *pFilter;          /* The FILTER expression */
  FuncDef *pFunc;         /* The function */
  int iEphCsr;            /* Partition buffer or Peer buffer */
  int regAccum;           /* Accumulator */
  int regResult;          /* Interim result */
  int csrApp;             /* Function cursor (used by min/max) */
  int regApp;             /* Function register (also used by min/max) */
  int regPart;            /* Array of registers for PARTITION BY values */
  Expr *pOwner;           /* Expression object this window is attached to */
  int nBufferCol;         /* Number of columns in buffer table */
  int iArgCol;            /* Offset of first argument for this function */
  int regOne;             /* Register containing constant value 1 */
  int regStartRowid;
  int regEndRowid;
  u8 bExprArgs;           /* Defer evaluation of window function arguments
                          ** due to the SQLITE_SUBTYPE flag */
};

#ifndef SQLITE_OMIT_WINDOWFUNC
SQLITE_PRIVATE void sqlite3WindowDelete(sqlite3*, Window*);
SQLITE_PRIVATE void sqlite3WindowUnlinkFromSelect(Window*);
SQLITE_PRIVATE void sqlite3WindowListDelete(sqlite3 *db, Window *p);
SQLITE_PRIVATE Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*, u8);
SQLITE_PRIVATE void sqlite3WindowAttach(Parse*, Expr*, Window*);
SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin);
SQLITE_PRIVATE int sqlite3WindowCompare(Parse*, Window*, Window*, int);
SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Window*);
SQLITE_PRIVATE void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int);
SQLITE_PRIVATE int sqlite3WindowRewrite(Parse*, Select*);
SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
SQLITE_PRIVATE void sqlite3WindowUpdate(Parse*, Window*, Window*, FuncDef*);
SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p);
SQLITE_PRIVATE Window *sqlite3WindowListDup(sqlite3 *db, Window *p);
................................................................................
SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*, int);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int,int);
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
................................................................................
#endif
SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3*);
SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int);
SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*);
SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*);
SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*);
SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*,char);
SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*,char);
SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int);
SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);
SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16);
SQLITE_PRIVATE void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
#if SQLITE_ENABLE_HIDDEN_COLUMNS
SQLITE_PRIVATE   void sqlite3ColumnPropertiesFromName(Table*, Column*);
#else
................................................................................
SQLITE_PRIVATE u32 sqlite3Utf8Read(const u8**);
SQLITE_PRIVATE LogEst sqlite3LogEst(u64);
SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst,LogEst);
#ifndef SQLITE_OMIT_VIRTUALTABLE
SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double);
#endif
#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \
    defined(SQLITE_ENABLE_STAT4) || \
    defined(SQLITE_EXPLAIN_ESTIMATED_ROWS)
SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst);
#endif
SQLITE_PRIVATE VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int);
SQLITE_PRIVATE const char *sqlite3VListNumToName(VList*,int);
SQLITE_PRIVATE int sqlite3VListNameToNum(VList*,const char*,int);

................................................................................
SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr*);
SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3*);
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse*, const char*,const char*,const char*);
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, int);
SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3AbsInt32(int);
#ifdef SQLITE_ENABLE_8_3_NAMES
SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*);
................................................................................
SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
SQLITE_PRIVATE void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
#ifndef SQLITE_AMALGAMATION
SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[];
SQLITE_PRIVATE const char sqlite3StrBINARY[];
SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[];
SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[];

SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config;
SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;
#ifndef SQLITE_OMIT_WSD
SQLITE_PRIVATE int sqlite3PendingByte;
#endif
#endif
#ifdef VDBE_PROFILE
................................................................................
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int);
SQLITE_PRIVATE int sqlite3HasExplicitNulls(Parse*, ExprList*);

#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*);
#endif
SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
  void (*)(sqlite3_context*,int,sqlite3_value **),
  void (*)(sqlite3_context*,int,sqlite3_value **), 
................................................................................

#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse*, Expr*);
#else
# define sqlite3ExprCheckIN(x,y) SQLITE_OK
#endif

#ifdef SQLITE_ENABLE_STAT4

SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue(
    Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*);
SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**);
SQLITE_PRIVATE void sqlite3Stat4ProbeFree(UnpackedRecord*);
SQLITE_PRIVATE int sqlite3Stat4Column(sqlite3*, const void*, int, int, sqlite3_value**);
SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3*, Index*, int);
#endif
................................................................................
#  define sqlite3VtabClear(Y)
#  define sqlite3VtabSync(X,Y) SQLITE_OK
#  define sqlite3VtabRollback(X)
#  define sqlite3VtabCommit(X)
#  define sqlite3VtabInSync(db) 0
#  define sqlite3VtabLock(X)
#  define sqlite3VtabUnlock(X)
#  define sqlite3VtabModuleUnref(D,X)
#  define sqlite3VtabUnlockList(X)
#  define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK
#  define sqlite3GetVTable(X,Y)  ((VTable*)0)
#else
SQLITE_PRIVATE    void sqlite3VtabClear(sqlite3 *db, Table*);
SQLITE_PRIVATE    void sqlite3VtabDisconnect(sqlite3 *db, Table *p);
SQLITE_PRIVATE    int sqlite3VtabSync(sqlite3 *db, Vdbe*);
SQLITE_PRIVATE    int sqlite3VtabRollback(sqlite3 *db);
SQLITE_PRIVATE    int sqlite3VtabCommit(sqlite3 *db);
SQLITE_PRIVATE    void sqlite3VtabLock(VTable *);
SQLITE_PRIVATE    void sqlite3VtabUnlock(VTable *);
SQLITE_PRIVATE    void sqlite3VtabModuleUnref(sqlite3*,Module*);
SQLITE_PRIVATE    void sqlite3VtabUnlockList(sqlite3*);
SQLITE_PRIVATE    int sqlite3VtabSavepoint(sqlite3 *, int, int);
SQLITE_PRIVATE    void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*);
SQLITE_PRIVATE    VTable *sqlite3GetVTable(sqlite3*, Table*);
SQLITE_PRIVATE    Module *sqlite3VtabCreateModule(
     sqlite3*,
     const char*,
................................................................................
SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = {
   SQLITE_DEFAULT_MEMSTATUS,  /* bMemstat */
   1,                         /* bCoreMutex */
   SQLITE_THREADSAFE==1,      /* bFullMutex */
   SQLITE_USE_URI,            /* bOpenUri */
   SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
   0,                         /* bSmallMalloc */
   1,                         /* bExtraSchemaChecks */
   0x7ffffffe,                /* mxStrlen */
   0,                         /* neverCorrupt */
   SQLITE_DEFAULT_LOOKASIDE,  /* szLookaside, nLookaside */
   SQLITE_STMTJRNL_SPILL,     /* nStmtSpill */
   {0,0,0,0,0,0,0,0},         /* m */
   {0,0,0,0,0,0,0,0,0},       /* mutex */
   {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */
................................................................................
#ifndef SQLITE_UNTESTABLE
   0,                         /* xTestCallback */
#endif
   0,                         /* bLocaltimeFault */
   0,                         /* bInternalFunctions */
   0x7ffffffe,                /* iOnceResetThreshold */
   SQLITE_DEFAULT_SORTERREF_SIZE,   /* szSorterRef */
   0,                         /* iPrngSeed */
};

/*
** Hash table for global functions - functions common to all
** database connections.  After initialization, this table is
** read-only.
*/
SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;









#ifdef VDBE_PROFILE
/*
** The following performance counter can be used in place of
** sqlite3Hwtime() for profiling.  This is a no-op on standard builds.
*/
SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt = 0;
#endif
................................................................................
SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...);
SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*);
void sqliteVdbePopStack(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*);
SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*);
SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8);

SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32);
SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*);
SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int);

int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *);
SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*);
SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*);
................................................................................
  return pVfs->xDlSym(pVfs, pHdle