sqllogictest

**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.20.0"
#define SQLITE_VERSION_NUMBER 3020000
#define SQLITE_SOURCE_ID      "2017-07-25 15:12:01 f39cb76b3347baba22f2c329e74036710b64620414433a952de8d44da79ba8d9"

/*
** 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

  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);
SQLITE_API int sqlite3_prepare16_v3(
  sqlite3 *db,            /* Database handle */
  const void *zSql,       /* SQL statement, UTF-16 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  unsigned int prepFlags, /* Zero or more SQLITE_PREPARE_ flags */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);

/*
** CAPI3REF: Retrieving Statement SQL
** METHOD: sqlite3_stmt

** is filled with zeroes.  ^A zeroblob uses a fixed amount of memory
** (just an integer to hold its size) while it is being processed.
** Zeroblobs are intended to serve as placeholders for BLOBs whose
** content is later written using
** [sqlite3_blob_open | incremental BLOB I/O] routines.
** ^A negative value for the zeroblob results in a zero-length BLOB.
**
** ^The sqlite3_bind_pointer(S,I,P,T) routine causes the I-th parameter in
** [prepared statement] S to have an SQL value of NULL, but to also be
** associated with the pointer P of type T.
** ^The sqlite3_bind_pointer() routine can be used to pass
** host-language pointers into [application-defined SQL functions].
** ^A parameter that is initialized using [sqlite3_bind_pointer()] appears
** to be an ordinary SQL NULL value to everything other than
** [sqlite3_value_pointer()].  The T parameter should be a static string,
** preferably a string literal.  The procedure that invokes 
** sqlite3_bind_pointer(S,I,P,T) continues to own the P and T pointers and
** must guarantee that those pointers remain valid until after the last
** access via [sqlite3_value_pointer()].  The sqlite3_bind_pointer() routine
** is part of the [pointer passing interface] added for SQLite 3.20.0.
**
** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
** for the [prepared statement] or with a prepared statement for which
** [sqlite3_step()] has been called more recently than [sqlite3_reset()],
** then the call will return [SQLITE_MISUSE].  If any sqlite3_bind_()
** routine is passed a [prepared statement] that has been finalized, the
** result is undefined and probably harmful.

SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int);
SQLITE_API int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
SQLITE_API int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
                         void(*)(void*), unsigned char encoding);
SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
SQLITE_API int sqlite3_bind_pointer(sqlite3_stmt*, int, void*, const char*);
SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);

/*
** CAPI3REF: Number Of SQL Parameters
** METHOD: sqlite3_stmt
**

**
** ^The sqlite3_value_text16() interface extracts a UTF-16 string
** in the native byte-order of the host machine.  ^The
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.
**
** ^If [sqlite3_value] object V was initialized 
** using [sqlite3_bind_pointer(S,I,P,X)] or [sqlite3_result_pointer(C,P,X)]
** and if X and Y are strings that compare equal according to strcmp(X,Y),
** then sqlite3_value_pointer(V,Y) will return the pointer P.  ^Otherwise,
** sqlite3_value_pointer(V,Y) returns a NULL.
**
** ^(The sqlite3_value_type(V) interface returns the
** [SQLITE_INTEGER | datatype code] for the initial datatype of the
** [sqlite3_value] object V. The returned value is one of [SQLITE_INTEGER],
** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL].)^
** Other interfaces might change the datatype for an sqlite3_value object.
** For example, if the datatype is initially SQLITE_INTEGER and

** These routines must be called from the same thread as
** the SQL function that supplied the [sqlite3_value*] parameters.
*/
SQLITE_API const void *sqlite3_value_blob(sqlite3_value*);
SQLITE_API double sqlite3_value_double(sqlite3_value*);
SQLITE_API int sqlite3_value_int(sqlite3_value*);
SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
SQLITE_API void *sqlite3_value_pointer(sqlite3_value*, const char*);
SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes16(sqlite3_value*);
SQLITE_API int sqlite3_value_type(sqlite3_value*);

** sqlite3_result_value() interface makes a copy of the [sqlite3_value]
** so that the [sqlite3_value] specified in the parameter may change or
** be deallocated after sqlite3_result_value() returns without harm.
** ^A [protected sqlite3_value] object may always be used where an
** [unprotected sqlite3_value] object is required, so either
** kind of [sqlite3_value] object can be used with this interface.
**
** ^The sqlite3_result_pointer(C,P,T) interface sets the result to an
** SQL NULL value, just like [sqlite3_result_null(C)], except that it
** also associates the host-language pointer P or type T with that 
** NULL value such that the pointer can be retrieved within an
** [application-defined SQL function] using [sqlite3_value_pointer()].
** The T parameter should be a static string and preferably a string
** literal. The procedure that invokes sqlite3_result_pointer(C,P,T)
** continues to own the P and T pointers and must guarantee that 
** those pointers remain valid until after the last access via
** [sqlite3_value_pointer()].  The sqlite3_result_pointer() routine
** is part of the [pointer passing interface] added for SQLite 3.20.0.
**
** If these routines are called from within the different thread
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_blob64(sqlite3_context*,const void*,

SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
                           void(*)(void*), unsigned char encoding);
SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
SQLITE_API void sqlite3_result_pointer(sqlite3_context*, void*, const char*);
SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n);
SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);


/*
** CAPI3REF: Setting The Subtype Of An SQL Function
** METHOD: sqlite3_context

#define OP_Variable       62 /* synopsis: r[P2]=parameter(P1,P4)           */
#define OP_Move           63 /* synopsis: r[P2@P3]=r[P1@P3]                */
#define OP_Copy           64 /* synopsis: r[P2@P3+1]=r[P1@P3+1]            */
#define OP_SCopy          65 /* synopsis: r[P2]=r[P1]                      */
#define OP_IntCopy        66 /* synopsis: r[P2]=r[P1]                      */
#define OP_ResultRow      67 /* synopsis: output=r[P1@P2]                  */
#define OP_CollSeq        68
#define OP_AddImm         69 /* synopsis: r[P1]=r[P1]+P2                   */
#define OP_Or             70 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */
#define OP_And            71 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */


#define OP_RealAffinity   72
#define OP_Cast           73 /* synopsis: affinity(r[P1])                  */
#define OP_Permutation    74
#define OP_IsNull         75 /* same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */
#define OP_NotNull        76 /* same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */
#define OP_Ne             77 /* same as TK_NE, synopsis: IF r[P3]!=r[P1]   */
#define OP_Eq             78 /* same as TK_EQ, synopsis: IF r[P3]==r[P1]   */
#define OP_Gt             79 /* same as TK_GT, synopsis: IF r[P3]>r[P1]    */
#define OP_Le             80 /* same as TK_LE, synopsis: IF r[P3]<=r[P1]   */
#define OP_Lt             81 /* same as TK_LT, synopsis: IF r[P3]<r[P1]    */
#define OP_Ge             82 /* same as TK_GE, synopsis: IF r[P3]>=r[P1]   */
#define OP_ElseNotEq      83 /* same as TK_ESCAPE                          */
#define OP_BitAnd         84 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr          85 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft      86 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
#define OP_ShiftRight     87 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
#define OP_Add            88 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
#define OP_Subtract       89 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply       90 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide         91 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder      92 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat         93 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_Compare        94 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
#define OP_BitNot         95 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */
#define OP_Column         96 /* synopsis: r[P3]=PX                         */
#define OP_String8        97 /* same as TK_STRING, synopsis: r[P2]='P4'    */


#define OP_Affinity       98 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     99 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count         100 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie    101
#define OP_SetCookie     102
#define OP_ReopenIdx     103 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead      104 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite     105 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenDup       106
#define OP_OpenAutoindex 107 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral 108 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen    109
#define OP_SequenceTest  110 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo    111 /* synopsis: P3 columns in r[P2]              */
#define OP_Close         112
#define OP_ColumnsUsed   113
#define OP_Sequence      114 /* synopsis: r[P2]=cursor[P1].ctr++           */
#define OP_NewRowid      115 /* synopsis: r[P2]=rowid                      */
#define OP_Insert        116 /* synopsis: intkey=r[P3] data=r[P2]          */
#define OP_InsertInt     117 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_Delete        118
#define OP_ResetCount    119
#define OP_SorterCompare 120 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
#define OP_SorterData    121 /* synopsis: r[P2]=data                       */
#define OP_RowData       122 /* synopsis: r[P2]=data                       */
#define OP_Rowid         123 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow       124
#define OP_SorterInsert  125 /* synopsis: key=r[P2]                        */
#define OP_IdxInsert     126 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     127 /* synopsis: key=r[P2@P3]                     */
#define OP_DeferredSeek  128 /* synopsis: Move P3 to P1.rowid if needed    */
#define OP_IdxRowid      129 /* synopsis: r[P2]=rowid                      */
#define OP_Destroy       130
#define OP_Clear         131
#define OP_Real          132 /* same as TK_FLOAT, synopsis: r[P2]=P4       */


#define OP_ResetSorter   133
#define OP_CreateIndex   134 /* synopsis: r[P2]=root iDb=P1                */
#define OP_CreateTable   135 /* synopsis: r[P2]=root iDb=P1                */
#define OP_SqlExec       136
#define OP_ParseSchema   137
#define OP_LoadAnalysis  138
#define OP_DropTable     139
#define OP_DropIndex     140
#define OP_DropTrigger   141
#define OP_IntegrityCk   142
#define OP_RowSetAdd     143 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_Param         144
#define OP_FkCounter     145 /* synopsis: fkctr[P1]+=P2                    */
#define OP_MemMax        146 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_OffsetLimit   147 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_AggStep0      148 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep       149 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggFinal      150 /* synopsis: accum=r[P1] N=P2                 */
#define OP_Expire        151
#define OP_TableLock     152 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        153
#define OP_VCreate       154
#define OP_VDestroy      155
#define OP_VOpen         156
#define OP_VColumn       157 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VRename       158
#define OP_Pagecount     159
#define OP_MaxPgcnt      160
#define OP_PureFunc0     161
#define OP_Function0     162 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_PureFunc      163
#define OP_Function      164 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_CursorHint    165
#define OP_Noop          166
#define OP_Explain       167

/* Properties such as "out2" or "jump" that are specified in
** comments following the "case" for each opcode in the vdbe.c
** are encoded into bitvectors as follows:
*/
#define OPFLG_JUMP        0x01  /* jump:  P2 holds jmp target */
#define OPFLG_IN1         0x02  /* in1:   P1 is an input */
#define OPFLG_IN2         0x04  /* in2:   P2 is an input */
#define OPFLG_IN3         0x08  /* in3:   P3 is an input */
#define OPFLG_OUT2        0x10  /* out2:  P2 is an output */
#define OPFLG_OUT3        0x20  /* out3:  P3 is an output */
#define OPFLG_INITIALIZER {\
/*   0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,\
/*   8 */ 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x01, 0x01,\
/*  16 */ 0x03, 0x03, 0x01, 0x12, 0x01, 0x03, 0x03, 0x01,\
/*  24 */ 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09,\
/*  32 */ 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\
/*  40 */ 0x01, 0x01, 0x23, 0x0b, 0x01, 0x01, 0x03, 0x03,\
/*  48 */ 0x03, 0x01, 0x01, 0x01, 0x02, 0x02, 0x08, 0x00,\
/*  56 */ 0x10, 0x10, 0x10, 0x10, 0x00, 0x10, 0x10, 0x00,\
/*  64 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x02, 0x26, 0x26,\
/*  72 */ 0x02, 0x02, 0x00, 0x03, 0x03, 0x0b, 0x0b, 0x0b,\
/*  80 */ 0x0b, 0x0b, 0x0b, 0x01, 0x26, 0x26, 0x26, 0x26,\
/*  88 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00, 0x12,\
/*  96 */ 0x00, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
/* 104 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 112 */ 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,\
/* 120 */ 0x00, 0x00, 0x00, 0x10, 0x00, 0x04, 0x04, 0x00,\
/* 128 */ 0x00, 0x10, 0x10, 0x00, 0x10, 0x00, 0x10, 0x10,\
/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06,\
/* 144 */ 0x10, 0x00, 0x04, 0x1a, 0x00, 0x00, 0x00, 0x00,\
/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,\
/* 160 */ 0x10, 0x00, 0x00, 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
** generated this include file strives to group all JUMP opcodes
** together near the beginning of the list.
*/

typedef int (*RecordCompare)(int,const void*,UnpackedRecord*);
SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord*);

#ifndef SQLITE_OMIT_TRIGGER
SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
#endif

SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context*);

/* Use SQLITE_ENABLE_COMMENTS to enable generation of extra comments on
** each VDBE opcode.
**
** Use the SQLITE_ENABLE_MODULE_COMMENTS macro to see some extra no-op
** comments in VDBE programs that show key decision points in the code
** generator.

**   VFUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag.
**
**   DFUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and
**     adds the SQLITE_FUNC_SLOCHNG flag.  Used for date & time functions
**     and functions like sqlite_version() that can change, but not during
**     a single query.  The iArg is ignored.  The user-data is always set
**     to a NULL pointer.  The bNC parameter is not used.
**
**   PURE_DATE(zName, nArg, iArg, bNC, xFunc)
**     Used for "pure" date/time functions, this macro is like DFUNCTION
**     except that it does set the SQLITE_FUNC_CONSTANT flags.  iArg is
**     ignored and the user-data for these functions is set to an 
**     arbitrary non-NULL pointer.  The bNC parameter is not used.
**
**   AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal)
**     Used to create an aggregate function definition implemented by
**     the C functions xStep and xFinal. The first four parameters
**     are interpreted in the same way as the first 4 parameters to
**     FUNCTION().
**

#define FUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} }
#define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} }
#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \
   0, 0, xFunc, 0, #zName, {0} }
#define PURE_DATE(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|SQLITE_FUNC_CONSTANT, \
   (void*)&sqlite3Config, 0, xFunc, 0, #zName, {0} }
#define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \
  {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} }
#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   pArg, 0, xFunc, 0, #zName, }
#define LIKEFUNC(zName, nArg, arg, flags) \

  int nRangeReg;       /* Size of the temporary register block */
  int iRangeReg;       /* First register in temporary register block */
  int nErr;            /* Number of errors seen */
  int nTab;            /* Number of previously allocated VDBE cursors */
  int nMem;            /* Number of memory cells used so far */
  int nOpAlloc;        /* Number of slots allocated for Vdbe.aOp[] */
  int szOpAlloc;       /* Bytes of memory space allocated for Vdbe.aOp[] */

  int iSelfTab;        /* Table for associated with an index on expr, or negative
                       ** of the base register during check-constraint eval */
  int iCacheLevel;     /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
  int iCacheCnt;       /* Counter used to generate aColCache[].lru values */
  int nLabel;          /* Number of labels used */
  int *aLabel;         /* Space to hold the labels */
  ExprList *pConstExpr;/* Constant expressions */
  Token constraintName;/* Name of the constraint currently being parsed */
  yDbMask writeMask;   /* Start a write transaction on these databases */

SQLITE_PRIVATE int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*));
SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem*, i64);
#ifdef SQLITE_OMIT_FLOATING_POINT
# define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64
#else
SQLITE_PRIVATE   void sqlite3VdbeMemSetDouble(Mem*, double);
#endif
SQLITE_PRIVATE void sqlite3VdbeMemSetPointer(Mem*, void*, const char*);
SQLITE_PRIVATE void sqlite3VdbeMemInit(Mem*,sqlite3*,u16);
SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem*,int);
SQLITE_PRIVATE void sqlite3VdbeMemSetRowSet(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, u8, u8);
SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*);

  DateTime *p
){
  double r;
  if( parseYyyyMmDd(zDate,p)==0 ){
    return 0;
  }else if( parseHhMmSs(zDate, p)==0 ){
    return 0;
  }else if( sqlite3StrICmp(zDate,"now")==0 && sqlite3NotPureFunc(context) ){
    return setDateTimeToCurrent(context, p);
  }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){
    setRawDateNumber(p, r);
    return 0;
  }
  return 1;
}

#ifndef SQLITE_OMIT_LOCALTIME
    case 'l': {
      /*    localtime
      **
      ** Assuming the current time value is UTC (a.k.a. GMT), shift it to
      ** show local time.
      */
      if( sqlite3_stricmp(z, "localtime")==0 && sqlite3NotPureFunc(pCtx) ){
        computeJD(p);
        p->iJD += localtimeOffset(p, pCtx, &rc);
        clearYMD_HMS_TZ(p);
      }
      break;
    }
#endif

          p->iJD = (sqlite3_int64)r;
          p->validJD = 1;
          p->rawS = 0;
          rc = 0;
        }
      }
#ifndef SQLITE_OMIT_LOCALTIME
      else if( sqlite3_stricmp(z, "utc")==0 && sqlite3NotPureFunc(pCtx) ){
        if( p->tzSet==0 ){
          sqlite3_int64 c1;
          computeJD(p);
          c1 = localtimeOffset(p, pCtx, &rc);
          if( rc==SQLITE_OK ){
            p->iJD -= c1;
            clearYMD_HMS_TZ(p);

** This function registered all of the above C functions as SQL
** functions.  This should be the only routine in this file with
** external linkage.
*/
SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void){
  static FuncDef aDateTimeFuncs[] = {
#ifndef SQLITE_OMIT_DATETIME_FUNCS
    PURE_DATE(julianday,        -1, 0, 0, juliandayFunc ),
    PURE_DATE(date,             -1, 0, 0, dateFunc      ),
    PURE_DATE(time,             -1, 0, 0, timeFunc      ),
    PURE_DATE(datetime,         -1, 0, 0, datetimeFunc  ),
    PURE_DATE(strftime,         -1, 0, 0, strftimeFunc  ),
    DFUNCTION(current_time,      0, 0, 0, ctimeFunc     ),
    DFUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc),
    DFUNCTION(current_date,      0, 0, 0, cdateFunc     ),
#else
    STR_FUNCTION(current_time,      0, "%H:%M:%S",          0, currentTimeFunc),
    STR_FUNCTION(current_date,      0, "%Y-%m-%d",          0, currentTimeFunc),
    STR_FUNCTION(current_timestamp, 0, "%Y-%m-%d %H:%M:%S", 0, currentTimeFunc),

    /*  62 */ "Variable"         OpHelp("r[P2]=parameter(P1,P4)"),
    /*  63 */ "Move"             OpHelp("r[P2@P3]=r[P1@P3]"),
    /*  64 */ "Copy"             OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
    /*  65 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
    /*  66 */ "IntCopy"          OpHelp("r[P2]=r[P1]"),
    /*  67 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
    /*  68 */ "CollSeq"          OpHelp(""),
    /*  69 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
    /*  70 */ "Or"               OpHelp("r[P3]=(r[P1] || r[P2])"),
    /*  71 */ "And"              OpHelp("r[P3]=(r[P1] && r[P2])"),


    /*  72 */ "RealAffinity"     OpHelp(""),
    /*  73 */ "Cast"             OpHelp("affinity(r[P1])"),
    /*  74 */ "Permutation"      OpHelp(""),
    /*  75 */ "IsNull"           OpHelp("if r[P1]==NULL goto P2"),
    /*  76 */ "NotNull"          OpHelp("if r[P1]!=NULL goto P2"),
    /*  77 */ "Ne"               OpHelp("IF r[P3]!=r[P1]"),
    /*  78 */ "Eq"               OpHelp("IF r[P3]==r[P1]"),
    /*  79 */ "Gt"               OpHelp("IF r[P3]>r[P1]"),
    /*  80 */ "Le"               OpHelp("IF r[P3]<=r[P1]"),
    /*  81 */ "Lt"               OpHelp("IF r[P3]<r[P1]"),
    /*  82 */ "Ge"               OpHelp("IF r[P3]>=r[P1]"),
    /*  83 */ "ElseNotEq"        OpHelp(""),
    /*  84 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
    /*  85 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
    /*  86 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
    /*  87 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
    /*  88 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
    /*  89 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
    /*  90 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
    /*  91 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
    /*  92 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
    /*  93 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
    /*  94 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
    /*  95 */ "BitNot"           OpHelp("r[P1]= ~r[P1]"),
    /*  96 */ "Column"           OpHelp("r[P3]=PX"),
    /*  97 */ "String8"          OpHelp("r[P2]='P4'"),


    /*  98 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /*  99 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /* 100 */ "Count"            OpHelp("r[P2]=count()"),
    /* 101 */ "ReadCookie"       OpHelp(""),
    /* 102 */ "SetCookie"        OpHelp(""),
    /* 103 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /* 104 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /* 105 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /* 106 */ "OpenDup"          OpHelp(""),
    /* 107 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /* 108 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /* 109 */ "SorterOpen"       OpHelp(""),
    /* 110 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /* 111 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /* 112 */ "Close"            OpHelp(""),
    /* 113 */ "ColumnsUsed"      OpHelp(""),
    /* 114 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
    /* 115 */ "NewRowid"         OpHelp("r[P2]=rowid"),
    /* 116 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
    /* 117 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
    /* 118 */ "Delete"           OpHelp(""),
    /* 119 */ "ResetCount"       OpHelp(""),
    /* 120 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
    /* 121 */ "SorterData"       OpHelp("r[P2]=data"),
    /* 122 */ "RowData"          OpHelp("r[P2]=data"),
    /* 123 */ "Rowid"            OpHelp("r[P2]=rowid"),
    /* 124 */ "NullRow"          OpHelp(""),
    /* 125 */ "SorterInsert"     OpHelp("key=r[P2]"),
    /* 126 */ "IdxInsert"        OpHelp("key=r[P2]"),
    /* 127 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
    /* 128 */ "DeferredSeek"     OpHelp("Move P3 to P1.rowid if needed"),
    /* 129 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
    /* 130 */ "Destroy"          OpHelp(""),
    /* 131 */ "Clear"            OpHelp(""),
    /* 132 */ "Real"             OpHelp("r[P2]=P4"),


    /* 133 */ "ResetSorter"      OpHelp(""),
    /* 134 */ "CreateIndex"      OpHelp("r[P2]=root iDb=P1"),
    /* 135 */ "CreateTable"      OpHelp("r[P2]=root iDb=P1"),
    /* 136 */ "SqlExec"          OpHelp(""),
    /* 137 */ "ParseSchema"      OpHelp(""),
    /* 138 */ "LoadAnalysis"     OpHelp(""),
    /* 139 */ "DropTable"        OpHelp(""),
    /* 140 */ "DropIndex"        OpHelp(""),
    /* 141 */ "DropTrigger"      OpHelp(""),
    /* 142 */ "IntegrityCk"      OpHelp(""),
    /* 143 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
    /* 144 */ "Param"            OpHelp(""),
    /* 145 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 146 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 147 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
    /* 148 */ "AggStep0"         OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 149 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 150 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
    /* 151 */ "Expire"           OpHelp(""),
    /* 152 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
    /* 153 */ "VBegin"           OpHelp(""),
    /* 154 */ "VCreate"          OpHelp(""),
    /* 155 */ "VDestroy"         OpHelp(""),
    /* 156 */ "VOpen"            OpHelp(""),
    /* 157 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
    /* 158 */ "VRename"          OpHelp(""),
    /* 159 */ "Pagecount"        OpHelp(""),
    /* 160 */ "MaxPgcnt"         OpHelp(""),
    /* 161 */ "PureFunc0"        OpHelp(""),
    /* 162 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
    /* 163 */ "PureFunc"         OpHelp(""),
    /* 164 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
    /* 165 */ "CursorHint"       OpHelp(""),
    /* 166 */ "Noop"             OpHelp(""),
    /* 167 */ "Explain"          OpHelp(""),
  };
  return azName[i];
}
#endif

/************** End of opcodes.c *********************************************/
/************** Begin file os_unix.c *****************************************/

  }
}

/*
** Set the value stored in *pMem should already be a NULL.
** Also store a pointer to go with it.
*/
SQLITE_PRIVATE void sqlite3VdbeMemSetPointer(Mem *pMem, void *pPtr, const char *zPType){
  assert( pMem->flags==MEM_Null );
  if( zPType ){
    pMem->flags = MEM_Null|MEM_Subtype|MEM_Term|MEM_Static;
    pMem->u.pPtr = pPtr;
    pMem->eSubtype = 'p';
    pMem->z = (char*)zPType;
  }
}

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Delete any previous value and set the value stored in *pMem to val,
** manifest type REAL.
*/

  assert( (v->db->flags & SQLITE_EnableQPSG)==0 );
  if( iVar>=32 ){
    v->expmask |= 0x80000000;
  }else{
    v->expmask |= ((u32)1 << (iVar-1));
  }
}

/*
** Cause a function to throw an error if it was call from OP_PureFunc
** rather than OP_Function.
**
** 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;
  }
  return 1;
}

#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Transfer error message text from an sqlite3_vtab.zErrMsg (text stored
** in memory obtained from sqlite3_malloc) into a Vdbe.zErrMsg (text stored
** in memory obtained from sqlite3DbMalloc).
*/

SQLITE_API sqlite_int64 sqlite3_value_int64(sqlite3_value *pVal){
  return sqlite3VdbeIntValue((Mem*)pVal);
}
SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value *pVal){
  Mem *pMem = (Mem*)pVal;
  return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0);
}
SQLITE_API void *sqlite3_value_pointer(sqlite3_value *pVal, const char *zPType){
  Mem *p = (Mem*)pVal;
  if( p->flags==(MEM_Null|MEM_Subtype|MEM_Term|MEM_Static)
   && zPType!=0
   && p->eSubtype=='p'
   && strcmp(p->z, zPType)==0
  ){
    return p->u.pPtr;
  }else{
    return 0;
  }
}
SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value *pVal){
  return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8);

  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetInt64(pCtx->pOut, iVal);
}
SQLITE_API void sqlite3_result_null(sqlite3_context *pCtx){
  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetNull(pCtx->pOut);
}
SQLITE_API void sqlite3_result_pointer(sqlite3_context *pCtx, void *pPtr, const char *zPT){
  Mem *pOut = pCtx->pOut;
  assert( sqlite3_mutex_held(pOut->db->mutex) );
  sqlite3VdbeMemSetNull(pOut);
  sqlite3VdbeMemSetPointer(pOut, pPtr, zPT);
}
SQLITE_API void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){
  Mem *pOut = pCtx->pOut;
  assert( sqlite3_mutex_held(pOut->db->mutex) );
  pOut->eSubtype = eSubtype & 0xff;
  pOut->flags |= MEM_Subtype;
}

  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;
}
SQLITE_API int sqlite3_bind_pointer(sqlite3_stmt *pStmt, int i, void *pPtr,const char *zT){
  int rc;
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr, zT);
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;
}
SQLITE_API int sqlite3_bind_text( 
  sqlite3_stmt *pStmt, 
  int i, 

  assert( pOp->p4type==P4_COLLSEQ );
  if( pOp->p1 ){
    sqlite3VdbeMemSetInt64(&aMem[pOp->p1], 0);
  }
  break;
}
















































































































/* Opcode: BitAnd P1 P2 P3 * *
** Synopsis: r[P3]=r[P1]&r[P2]
**
** Take the bit-wise AND of the values in register P1 and P2 and
** store the result in register P3.
** If either input is NULL, the result is NULL.
*/

    newMax = sqlite3BtreeLastPage(pBt);
    if( newMax < (unsigned)pOp->p3 ) newMax = (unsigned)pOp->p3;
  }
  pOut->u.i = sqlite3BtreeMaxPageCount(pBt, newMax);
  break;
}
#endif

/* Opcode: Function0 P1 P2 P3 P4 P5
** Synopsis: r[P3]=func(r[P2@P5])
**
** Invoke a user function (P4 is a pointer to a FuncDef object that
** defines the function) with P5 arguments taken from register P2 and
** successors.  The result of the function is stored in register P3.
** Register P3 must not be one of the function inputs.
**
** P1 is a 32-bit bitmask indicating whether or not each argument to the 
** function was determined to be constant at compile time. If the first
** argument was constant then bit 0 of P1 is set. This is used to determine
** whether meta data associated with a user function argument using the
** sqlite3_set_auxdata() API may be safely retained until the next
** invocation of this opcode.
**
** See also: Function, AggStep, AggFinal
*/
/* Opcode: Function P1 P2 P3 P4 P5
** Synopsis: r[P3]=func(r[P2@P5])
**
** Invoke a user function (P4 is a pointer to an sqlite3_context object that
** contains a pointer to the function to be run) with P5 arguments taken
** from register P2 and successors.  The result of the function is stored
** in register P3.  Register P3 must not be one of the function inputs.
**
** P1 is a 32-bit bitmask indicating whether or not each argument to the 
** function was determined to be constant at compile time. If the first
** argument was constant then bit 0 of P1 is set. This is used to determine
** whether meta data associated with a user function argument using the
** sqlite3_set_auxdata() API may be safely retained until the next
** invocation of this opcode.
**
** SQL functions are initially coded as OP_Function0 with P4 pointing
** to a FuncDef object.  But on first evaluation, the P4 operand is
** automatically converted into an sqlite3_context object and the operation
** changed to this OP_Function opcode.  In this way, the initialization of
** the sqlite3_context object occurs only once, rather than once for each
** evaluation of the function.
**
** See also: Function0, AggStep, AggFinal
*/
case OP_PureFunc0:
case OP_Function0: {
  int n;
  sqlite3_context *pCtx;

  assert( pOp->p4type==P4_FUNCDEF );
  n = pOp->p5;
  assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
  assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem+1 - p->nCursor)+1) );
  assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+n );
  pCtx = sqlite3DbMallocRawNN(db, sizeof(*pCtx) + (n-1)*sizeof(sqlite3_value*));
  if( pCtx==0 ) goto no_mem;
  pCtx->pOut = 0;
  pCtx->pFunc = pOp->p4.pFunc;
  pCtx->iOp = (int)(pOp - aOp);
  pCtx->pVdbe = p;
  pCtx->argc = n;
  pOp->p4type = P4_FUNCCTX;
  pOp->p4.pCtx = pCtx;
  assert( OP_PureFunc == OP_PureFunc0+2 );
  assert( OP_Function == OP_Function0+2 );
  pOp->opcode += 2;
  /* Fall through into OP_Function */
}
case OP_PureFunc:
case OP_Function: {
  int i;
  sqlite3_context *pCtx;

  assert( pOp->p4type==P4_FUNCCTX );
  pCtx = pOp->p4.pCtx;

  /* If this function is inside of a trigger, the register array in aMem[]
  ** might change from one evaluation to the next.  The next block of code
  ** checks to see if the register array has changed, and if so it
  ** reinitializes the relavant parts of the sqlite3_context object */
  pOut = &aMem[pOp->p3];
  if( pCtx->pOut != pOut ){
    pCtx->pOut = pOut;
    for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i];
  }

  memAboutToChange(p, pOut);
#ifdef SQLITE_DEBUG
  for(i=0; i<pCtx->argc; i++){
    assert( memIsValid(pCtx->argv[i]) );
    REGISTER_TRACE(pOp->p2+i, pCtx->argv[i]);
  }
#endif
  MemSetTypeFlag(pOut, MEM_Null);
  pCtx->fErrorOrAux = 0;
  (*pCtx->pFunc->xSFunc)(pCtx, pCtx->argc, pCtx->argv);/* IMP: R-24505-23230 */

  /* If the function returned an error, throw an exception */
  if( pCtx->fErrorOrAux ){
    if( pCtx->isError ){
      sqlite3VdbeError(p, "%s", sqlite3_value_text(pOut));
      rc = pCtx->isError;
    }
    sqlite3VdbeDeleteAuxData(db, &p->pAuxData, pCtx->iOp, pOp->p1);
    if( rc ) goto abort_due_to_error;
  }

  /* Copy the result of the function into register P3 */
  if( pOut->flags & (MEM_Str|MEM_Blob) ){
    sqlite3VdbeChangeEncoding(pOut, encoding);
    if( sqlite3VdbeMemTooBig(pOut) ) goto too_big;
  }

  REGISTER_TRACE(pOp->p3, pOut);
  UPDATE_MAX_BLOBSIZE(pOut);
  break;
}


/* Opcode: Init P1 P2 * P4 *
** Synopsis: Start at P2
**
** Programs contain a single instance of this opcode as the very first
** opcode.

  int iIdxCol,    /* The column of the index to be loaded */
  int regOut      /* Store the index column value in this register */
){
  i16 iTabCol = pIdx->aiColumn[iIdxCol];
  if( iTabCol==XN_EXPR ){
    assert( pIdx->aColExpr );
    assert( pIdx->aColExpr->nExpr>iIdxCol );
    pParse->iSelfTab = iTabCur + 1;
    sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[iIdxCol].pExpr, regOut);
    pParse->iSelfTab = 0;
  }else{
    sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pIdx->pTable, iTabCur,
                                    iTabCol, regOut);
  }
}

/*

        return target;
      }
      /* Otherwise, fall thru into the TK_COLUMN case */
    }
    case TK_COLUMN: {
      int iTab = pExpr->iTable;
      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->pTab,
                               pExpr->iColumn, iTab, target,
                               pExpr->op2);
    }
    case TK_INTEGER: {

        pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[0].pExpr);
      }
#endif
      if( pDef->funcFlags & SQLITE_FUNC_NEEDCOLL ){
        if( !pColl ) pColl = db->pDfltColl; 
        sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ);
      }
      sqlite3VdbeAddOp4(v, pParse->iSelfTab ? OP_PureFunc0 : OP_Function0,
                        constMask, r1, target, (char*)pDef, P4_FUNCDEF);
      sqlite3VdbeChangeP5(v, (u8)nFarg);
      if( nFarg && constMask==0 ){
        sqlite3ReleaseTempRange(pParse, r1, nFarg);
      }
      return target;
    }
#ifndef SQLITE_OMIT_SUBQUERY

** iFirst..iLast, inclusive.  This routine is only call from within assert()
** statements.
*/
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse *pParse, int iFirst, int iLast){
  int i;
  if( pParse->nRangeReg>0
   && pParse->iRangeReg+pParse->nRangeReg > iFirst
   && pParse->iRangeReg <= iLast
  ){
     return 0;
  }
  for(i=0; i<pParse->nTempReg; i++){
    if( pParse->aTempReg[i]>=iFirst && pParse->aTempReg[i]<=iLast ){
      return 0;
    }

  int j;
  int regBase;
  int nCol;

  if( piPartIdxLabel ){
    if( pIdx->pPartIdxWhere ){
      *piPartIdxLabel = sqlite3VdbeMakeLabel(v);
      pParse->iSelfTab = iDataCur + 1;
      sqlite3ExprCachePush(pParse);
      sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, 
                            SQLITE_JUMPIFNULL);
      pParse->iSelfTab = 0;
    }else{
      *piPartIdxLabel = 0;
    }
  }
  nCol = (prefixOnly && pIdx->uniqNotNull) ? pIdx->nKeyCol : pIdx->nColumn;
  regBase = sqlite3GetTempRange(pParse, nCol);
  if( pPrior && (regBase!=regPrior || pPrior->pPartIdxWhere) ) pPrior = 0;

  }

  /* Test all CHECK constraints
  */
#ifndef SQLITE_OMIT_CHECK
  if( pTab->pCheck && (db->flags & SQLITE_IgnoreChecks)==0 ){
    ExprList *pCheck = pTab->pCheck;
    pParse->iSelfTab = -(regNewData+1);
    onError = overrideError!=OE_Default ? overrideError : OE_Abort;
    for(i=0; i<pCheck->nExpr; i++){
      int allOk;
      Expr *pExpr = pCheck->a[i].pExpr;
      if( aiChng && checkConstraintUnchanged(pExpr, aiChng, pkChng) ) continue;
      allOk = sqlite3VdbeMakeLabel(v);
      sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL);
      if( onError==OE_Ignore ){
        sqlite3VdbeGoto(v, ignoreDest);
      }else{
        char *zName = pCheck->a[i].zName;
        if( zName==0 ) zName = pTab->zName;
        if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-15569-63625 */
        sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_CHECK,
                              onError, zName, P4_TRANSIENT,
                              P5_ConstraintCheck);
      }
      sqlite3VdbeResolveLabel(v, allOk);
    }
    pParse->iSelfTab = 0;
  }
#endif /* !defined(SQLITE_OMIT_CHECK) */

  /* If rowid is changing, make sure the new rowid does not previously
  ** exist in the table.
  */
  if( pkChng && pPk==0 ){

    }
    iThisCur = iIdxCur+ix;
    addrUniqueOk = sqlite3VdbeMakeLabel(v);

    /* Skip partial indices for which the WHERE clause is not true */
    if( pIdx->pPartIdxWhere ){
      sqlite3VdbeAddOp2(v, OP_Null, 0, aRegIdx[ix]);
      pParse->iSelfTab = -(regNewData+1);
      sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, addrUniqueOk,
                            SQLITE_JUMPIFNULL);
      pParse->iSelfTab = 0;
    }

    /* Create a record for this index entry as it should appear after
    ** the insert or update.  Store that record in the aRegIdx[ix] register
    */
    regIdx = aRegIdx[ix]+1;
    for(i=0; i<pIdx->nColumn; i++){
      int iField = pIdx->aiColumn[i];
      int x;
      if( iField==XN_EXPR ){
        pParse->iSelfTab = -(regNewData+1);
        sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[i].pExpr, regIdx+i);
        pParse->iSelfTab = 0;
        VdbeComment((v, "%s column %d", pIdx->zName, i));
      }else{
        if( iField==XN_ROWID || iField==pTab->iPKey ){
          x = regNewData;
        }else{
          x = iField + regNewData + 1;
        }

  /* Version 3.18.0 and later */
  void (*set_last_insert_rowid)(sqlite3*,sqlite3_int64);
  /* Version 3.20.0 and later */
  int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
                    sqlite3_stmt**,const char**);
  int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
                      sqlite3_stmt**,const void**);
  int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*);
  void (*result_pointer)(sqlite3_context*,void*,const char*);
  void *(*value_pointer)(sqlite3_value*,const char*);
};

/*
** 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)(

          aRoot[cnt++] = pIdx->tnum;
        }
      }
      aRoot[cnt] = 0;

      /* Make sure sufficient number of registers have been allocated */
      pParse->nMem = MAX( pParse->nMem, 8+mxIdx );
      sqlite3ClearTempRegCache(pParse);

      /* Do the b-tree integrity checks */
      sqlite3VdbeAddOp4(v, OP_IntegrityCk, 2, cnt, 1, (char*)aRoot,P4_INTARRAY);
      sqlite3VdbeChangeP5(v, (u8)i);
      addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); VdbeCoverage(v);
      sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
         sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zDbSName),

        if( pTab->pCheck && (db->flags & SQLITE_IgnoreChecks)==0 ){
          ExprList *pCheck = sqlite3ExprListDup(db, pTab->pCheck, 0);
          if( db->mallocFailed==0 ){
            int addrCkFault = sqlite3VdbeMakeLabel(v);
            int addrCkOk = sqlite3VdbeMakeLabel(v);
            char *zErr;
            int k;
            pParse->iSelfTab = iDataCur + 1;
            sqlite3ExprCachePush(pParse);
            for(k=pCheck->nExpr-1; k>0; k--){
              sqlite3ExprIfFalse(pParse, pCheck->a[k].pExpr, addrCkFault, 0);
            }
            sqlite3ExprIfTrue(pParse, pCheck->a[0].pExpr, addrCkOk, 
                SQLITE_JUMPIFNULL);
            sqlite3VdbeResolveLabel(v, addrCkFault);
            pParse->iSelfTab = 0;
            zErr = sqlite3MPrintf(db, "CHECK constraint failed in %s",
                pTab->zName);
            sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC);
            integrityCheckResultRow(v, 3);
            sqlite3VdbeResolveLabel(v, addrCkOk);
            sqlite3ExprCachePop(pParse);
          }

  **              information from the current session in the
  **              database file so that it will be available to "optimize"
  **              pragmas run by future database connections.
  **
  **    0x0008    (Not yet implemented) Create indexes that might have
  **              been helpful to recent queries
  **
  ** The default MASK is and always shall be 0xfffe.  0xfffe means perform all
  ** of the optimizations listed above except Debug Mode, including new
  ** optimizations that have not yet been invented.  If new optimizations are
  ** ever added that should be off by default, those off-by-default 
  ** optimizations will have bitmasks of 0x10000 or larger.
  **
  ** DETERMINATION OF WHEN TO RUN ANALYZE
  **
  ** In the current implementation, a table is analyzed if only if all of

  char *zSql;

  UNUSED_PARAMETER(idxNum);
  UNUSED_PARAMETER(idxStr);
  pragmaVtabCursorClear(pCsr);
  j = (pTab->pName->mPragFlg & PragFlg_Result1)!=0 ? 0 : 1;
  for(i=0; i<argc; i++, j++){
    const char *zText = (const char*)sqlite3_value_text(argv[i]);
    assert( j<ArraySize(pCsr->azArg) );
    assert( pCsr->azArg[j]==0 );
    if( zText ){
      pCsr->azArg[j] = sqlite3_mprintf("%s", zText);
      if( pCsr->azArg[j]==0 ){
        return SQLITE_NOMEM;
      }
    }
  }
  sqlite3StrAccumInit(&acc, 0, 0, 0, pTab->db->aLimit[SQLITE_LIMIT_SQL_LENGTH]);
  sqlite3StrAccumAppendAll(&acc, "PRAGMA ");
  if( pCsr->azArg[1] ){
    sqlite3XPrintf(&acc, "%Q.", pCsr->azArg[1]);
  }

**
**   (2)  The subquery is not an aggregate or (2a) the outer query is not a join
**        and (2b) the outer query does not use subqueries other than the one
**        FROM-clause subquery that is a candidate for flattening.  (2b is
**        due to ticket [2f7170d73bf9abf80] from 2015-02-09.)
**
**   (3)  The subquery is not the right operand of a LEFT JOIN
**        or (a) the subquery is not itself a join and (b) the FROM clause
**        of the subquery does not contain a virtual table and (c) the 
**        outer query is not an aggregate.
**
**   (4)  The subquery is not DISTINCT.
**
**  (**)  At one point restrictions (4) and (5) defined a subset of DISTINCT
**        sub-queries that were excluded from this optimization. Restriction 
**        (4) has since been expanded to exclude all DISTINCT subqueries.
**

  ** are processed - there is no mechanism to determine if the LEFT JOIN
  ** table should be all-NULL.
  **
  ** See also tickets #306, #350, and #3300.
  */
  if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){
    isLeftJoin = 1;
    if( pSubSrc->nSrc>1 || isAgg || IsVirtual(pSubSrc->a[0].pTab) ){
      return 0; /* Restriction (3) */
    }
  }
#ifdef SQLITE_EXTRA_IFNULLROW
  else if( iFrom>0 && !isAgg ){
    /* Setting isLeftJoin to -1 causes OP_IfNullRow opcodes to be generated for
    ** every reference to any result column from subquery in a join, even though

  WhereTerm *pTerm,              /* WHERE clause term to check */
  struct SrcList_item *pSrc,     /* Table we are trying to access */
  Bitmask notReady               /* Tables in outer loops of the join */
){
  char aff;
  if( pTerm->leftCursor!=pSrc->iCursor ) return 0;
  if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) return 0;
  if( (pSrc->fg.jointype & JT_LEFT) 
   && !ExprHasProperty(pTerm->pExpr, EP_FromJoin)
   && (pTerm->eOperator & WO_IS)
  ){
    /* Cannot use an IS term from the WHERE clause as an index driver for
    ** the RHS of a LEFT JOIN. Such a term can only be used if it is from
    ** the ON clause.  */
    return 0;
  }
  if( (pTerm->prereqRight & notReady)!=0 ) return 0;
  if( pTerm->u.leftColumn<0 ) return 0;
  aff = pSrc->pTab->aCol[pTerm->u.leftColumn].affinity;
  if( !sqlite3IndexAffinityOk(pTerm->pExpr, aff) ) return 0;
  testcase( pTerm->pExpr->op==TK_IS );
  return 1;
}

  /* The column value supplied by SQLite must be in range. */
  assert( iCol>=0 && iCol<=p->nColumn+2 );

  switch( iCol-p->nColumn ){
    case 0:
      /* The special 'table-name' column */
      sqlite3_result_pointer(pCtx, pCsr, "fts3cursor");
      break;

    case 1:
      /* The docid column */
      sqlite3_result_int64(pCtx, pCsr->iPrevId);
      break;

static int fts3FunctionArg(
  sqlite3_context *pContext,      /* SQL function call context */
  const char *zFunc,              /* Function name */
  sqlite3_value *pVal,            /* argv[0] passed to function */
  Fts3Cursor **ppCsr              /* OUT: Store cursor handle here */
){
  int rc;
  *ppCsr = (Fts3Cursor*)sqlite3_value_pointer(pVal, "fts3cursor");
  if( (*ppCsr)!=0 ){
    rc = SQLITE_OK;
  }else{
    char *zErr = sqlite3_mprintf("illegal first argument to %s", zFunc);
    sqlite3_result_error(pContext, zErr, -1);
    sqlite3_free(zErr);
    rc = SQLITE_ERROR;

  sqlite3_free(pGlobal);
}

static void fts5Fts5Func(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apArg           /* Function arguments */
){
  Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx);
  fts5_api **ppApi;
  UNUSED_PARAM(nArg);
  assert( nArg==1 );
  ppApi = (fts5_api**)sqlite3_value_pointer(apArg[0], "fts5_api_ptr");
  if( ppApi ) *ppApi = &pGlobal->api;

}

/*
** Implementation of fts5_source_id() function.
*/
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: 2017-07-25 15:12:01 f39cb76b3347baba22f2c329e74036710b64620414433a952de8d44da79ba8d9", -1, SQLITE_TRANSIENT);
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 2,
    /* xCreate       */ fts5CreateMethod,
    /* xConnect      */ fts5ConnectMethod,

    if( rc==SQLITE_OK ) rc = sqlite3Fts5IndexInit(db);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5ExprInit(pGlobal, db);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5AuxInit(&pGlobal->api);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5TokenizerInit(&pGlobal->api);
    if( rc==SQLITE_OK ) rc = sqlite3Fts5VocabInit(pGlobal, db);
    if( rc==SQLITE_OK ){
      rc = sqlite3_create_function(
          db, "fts5", 1, SQLITE_UTF8, p, fts5Fts5Func, 0, 0
      );
    }
    if( rc==SQLITE_OK ){
      rc = sqlite3_create_function(
          db, "fts5_source_id", 0, SQLITE_UTF8, p, fts5SourceIdFunc, 0, 0
      );
    }

**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.20.0"
#define SQLITE_VERSION_NUMBER 3020000
#define SQLITE_SOURCE_ID      "2017-07-25 15:12:01 f39cb76b3347baba22f2c329e74036710b64620414433a952de8d44da79ba8d9"

/*
** 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

  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);
SQLITE_API int sqlite3_prepare16_v3(
  sqlite3 *db,            /* Database handle */
  const void *zSql,       /* SQL statement, UTF-16 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  unsigned int prepFlags, /* Zero or more SQLITE_PREPARE_ flags */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);

/*
** CAPI3REF: Retrieving Statement SQL
** METHOD: sqlite3_stmt

** is filled with zeroes.  ^A zeroblob uses a fixed amount of memory
** (just an integer to hold its size) while it is being processed.
** Zeroblobs are intended to serve as placeholders for BLOBs whose
** content is later written using
** [sqlite3_blob_open | incremental BLOB I/O] routines.
** ^A negative value for the zeroblob results in a zero-length BLOB.
**
** ^The sqlite3_bind_pointer(S,I,P,T) routine causes the I-th parameter in
** [prepared statement] S to have an SQL value of NULL, but to also be
** associated with the pointer P of type T.
** ^The sqlite3_bind_pointer() routine can be used to pass
** host-language pointers into [application-defined SQL functions].
** ^A parameter that is initialized using [sqlite3_bind_pointer()] appears
** to be an ordinary SQL NULL value to everything other than
** [sqlite3_value_pointer()].  The T parameter should be a static string,
** preferably a string literal.  The procedure that invokes 
** sqlite3_bind_pointer(S,I,P,T) continues to own the P and T pointers and
** must guarantee that those pointers remain valid until after the last
** access via [sqlite3_value_pointer()].  The sqlite3_bind_pointer() routine
** is part of the [pointer passing interface] added for SQLite 3.20.0.
**
** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
** for the [prepared statement] or with a prepared statement for which
** [sqlite3_step()] has been called more recently than [sqlite3_reset()],
** then the call will return [SQLITE_MISUSE].  If any sqlite3_bind_()
** routine is passed a [prepared statement] that has been finalized, the
** result is undefined and probably harmful.

SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int);
SQLITE_API int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
SQLITE_API int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
                         void(*)(void*), unsigned char encoding);
SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
SQLITE_API int sqlite3_bind_pointer(sqlite3_stmt*, int, void*, const char*);
SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);

/*
** CAPI3REF: Number Of SQL Parameters
** METHOD: sqlite3_stmt
**

**
** ^The sqlite3_value_text16() interface extracts a UTF-16 string
** in the native byte-order of the host machine.  ^The
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.
**
** ^If [sqlite3_value] object V was initialized 
** using [sqlite3_bind_pointer(S,I,P,X)] or [sqlite3_result_pointer(C,P,X)]
** and if X and Y are strings that compare equal according to strcmp(X,Y),
** then sqlite3_value_pointer(V,Y) will return the pointer P.  ^Otherwise,
** sqlite3_value_pointer(V,Y) returns a NULL.
**
** ^(The sqlite3_value_type(V) interface returns the
** [SQLITE_INTEGER | datatype code] for the initial datatype of the
** [sqlite3_value] object V. The returned value is one of [SQLITE_INTEGER],
** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL].)^
** Other interfaces might change the datatype for an sqlite3_value object.
** For example, if the datatype is initially SQLITE_INTEGER and

** These routines must be called from the same thread as
** the SQL function that supplied the [sqlite3_value*] parameters.
*/
SQLITE_API const void *sqlite3_value_blob(sqlite3_value*);
SQLITE_API double sqlite3_value_double(sqlite3_value*);
SQLITE_API int sqlite3_value_int(sqlite3_value*);
SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
SQLITE_API void *sqlite3_value_pointer(sqlite3_value*, const char*);
SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes16(sqlite3_value*);
SQLITE_API int sqlite3_value_type(sqlite3_value*);

** sqlite3_result_value() interface makes a copy of the [sqlite3_value]
** so that the [sqlite3_value] specified in the parameter may change or
** be deallocated after sqlite3_result_value() returns without harm.
** ^A [protected sqlite3_value] object may always be used where an
** [unprotected sqlite3_value] object is required, so either
** kind of [sqlite3_value] object can be used with this interface.
**
** ^The sqlite3_result_pointer(C,P,T) interface sets the result to an
** SQL NULL value, just like [sqlite3_result_null(C)], except that it
** also associates the host-language pointer P or type T with that 
** NULL value such that the pointer can be retrieved within an
** [application-defined SQL function] using [sqlite3_value_pointer()].
** The T parameter should be a static string and preferably a string
** literal. The procedure that invokes sqlite3_result_pointer(C,P,T)
** continues to own the P and T pointers and must guarantee that 
** those pointers remain valid until after the last access via
** [sqlite3_value_pointer()].  The sqlite3_result_pointer() routine
** is part of the [pointer passing interface] added for SQLite 3.20.0.
**
** If these routines are called from within the different thread
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_blob64(sqlite3_context*,const void*,

SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
                           void(*)(void*), unsigned char encoding);
SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
SQLITE_API void sqlite3_result_pointer(sqlite3_context*, void*, const char*);
SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n);
SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);


/*
** CAPI3REF: Setting The Subtype Of An SQL Function
** METHOD: sqlite3_context