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Overview
Comment:Update the SQLite implementation to the 3.6.20 release candidate.
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 2c7d3524b65014010743c446a81e5d8c10bde808
User & Date: drh 2009-11-02 17:53:15.000
Context
2010-01-05
15:58
Update the SQLite amalgamation to version 3.6.22 RC2. check-in: b23e3b6dbe user: drh tags: trunk
2009-11-02
17:53
Update the SQLite implementation to the 3.6.20 release candidate. check-in: 2c7d3524b6 user: drh tags: trunk
2009-10-14
11:16
Update SQLite to version 3.6.19. check-in: 4dc66b8b89 user: drh tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/sqlite3.c.
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/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.6.19.  By combining all the individual C code files into this 
** single large file, the entire code can be compiled as a one translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% are 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
** programs, you need this file and the "sqlite3.h" header file that defines
** the programming interface to the SQLite library.  (If you do not have 
** the "sqlite3.h" header file at hand, you will find a copy embedded within
** the text of this file.  Search for "Begin file sqlite3.h" to find the start
** of the embedded sqlite3.h header file.) Additional code files may be needed
** if you want a wrapper to interface SQLite with your choice of programming
** language. The code for the "sqlite3" command-line shell is also in a
** separate file. This file contains only code for the core SQLite library.
**
** This amalgamation was generated on 2009-10-14 03:07:49 UTC.
*/
#define SQLITE_CORE 1
#define SQLITE_AMALGAMATION 1
#ifndef SQLITE_PRIVATE
# define SQLITE_PRIVATE static
#endif
#ifndef SQLITE_API


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/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.6.20.  By combining all the individual C code files into this 
** single large file, the entire code can be compiled as a one translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% are 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
** programs, you need this file and the "sqlite3.h" header file that defines
** the programming interface to the SQLite library.  (If you do not have 
** the "sqlite3.h" header file at hand, you will find a copy embedded within
** the text of this file.  Search for "Begin file sqlite3.h" to find the start
** of the embedded sqlite3.h header file.) Additional code files may be needed
** if you want a wrapper to interface SQLite with your choice of programming
** language. The code for the "sqlite3" command-line shell is also in a
** separate file. This file contains only code for the core SQLite library.
**
** This amalgamation was generated on 2009-11-02 17:41:09 UTC.
*/
#define SQLITE_CORE 1
#define SQLITE_AMALGAMATION 1
#ifndef SQLITE_PRIVATE
# define SQLITE_PRIVATE static
#endif
#ifndef SQLITE_API
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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
**
** Requirements: [H10011] [H10014]
*/
#define SQLITE_VERSION        "3.6.19"
#define SQLITE_VERSION_NUMBER 3006019
#define SQLITE_SOURCE_ID      "2009-10-13 22:47:14 ac19dbc6a208be2313e47cbcc0b2a0d8d04bae4c"

/*
** CAPI3REF: Run-Time Library Version Numbers {H10020} <S60100>
** KEYWORDS: sqlite3_version
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] #defines in the header,







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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
**
** Requirements: [H10011] [H10014]
*/
#define SQLITE_VERSION        "3.6.20"
#define SQLITE_VERSION_NUMBER 3006020
#define SQLITE_SOURCE_ID      "2009-11-02 17:40:08 f19cb105d929f0a56f9597b6eb33ad96d0f7eddc"

/*
** CAPI3REF: Run-Time Library Version Numbers {H10020} <S60100>
** KEYWORDS: sqlite3_version
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] #defines in the header,
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#endif

/*
** CAPI3REF: Closing A Database Connection {H12010} <S30100><S40200>
**
** This routine is the destructor for the [sqlite3] object.
**
** Applications should [sqlite3_finalize | finalize] all [prepared statements]
** and [sqlite3_blob_close | close] all [BLOB handles] associated with
** the [sqlite3] object prior to attempting to close the object.
** The [sqlite3_next_stmt()] interface can be used to locate all
** [prepared statements] associated with a [database connection] if desired.
** Typical code might look like this:
**
** <blockquote><pre>
** sqlite3_stmt *pStmt;
** while( (pStmt = sqlite3_next_stmt(db, 0))!=0 ){
** &nbsp;   sqlite3_finalize(pStmt);
** }
** </pre></blockquote>
**
** If [sqlite3_close()] is invoked while a transaction is open,
** the transaction is automatically rolled back.
**
** The C parameter to [sqlite3_close(C)] must be either a NULL
** pointer or an [sqlite3] object pointer obtained
** from [sqlite3_open()], [sqlite3_open16()], or







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#endif

/*
** CAPI3REF: Closing A Database Connection {H12010} <S30100><S40200>
**
** This routine is the destructor for the [sqlite3] object.
**
** Applications must [sqlite3_finalize | finalize] all [prepared statements]
** and [sqlite3_blob_close | close] all [BLOB handles] associated with
** the [sqlite3] object prior to attempting to close the object.










**
** If [sqlite3_close()] is invoked while a transaction is open,
** the transaction is automatically rolled back.
**
** The C parameter to [sqlite3_close(C)] must be either a NULL
** pointer or an [sqlite3] object pointer obtained
** from [sqlite3_open()], [sqlite3_open16()], or
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/*
** CAPI3REF: Initialize The SQLite Library {H10130} <S20000><S30100>
**
** The sqlite3_initialize() routine initializes the
** SQLite library.  The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().



**
** A call to sqlite3_initialize() is an "effective" call if it is
** the first time sqlite3_initialize() is invoked during the lifetime of
** the process, or if it is the first time sqlite3_initialize() is invoked
** following a call to sqlite3_shutdown().  Only an effective call
** of sqlite3_initialize() does any initialization.  All other calls
** are harmless no-ops.
**
** A call to sqlite3_shutdown() is an "effective" call if it is the first
** call to sqlite3_shutdown() since the last sqlite3_initialize().  Only
** an effective call to sqlite3_shutdown() does any deinitialization.
** All other calls to sqlite3_shutdown() are harmless no-ops.
**






** Among other things, sqlite3_initialize() shall invoke
** sqlite3_os_init().  Similarly, sqlite3_shutdown()
** shall invoke sqlite3_os_end().
**
** The sqlite3_initialize() routine returns [SQLITE_OK] on success.
** If for some reason, sqlite3_initialize() is unable to initialize
** the library (perhaps it is unable to allocate a needed resource such
** as a mutex) it returns an [error code] other than [SQLITE_OK].
**
** The sqlite3_initialize() routine is called internally by many other







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/*
** CAPI3REF: Initialize The SQLite Library {H10130} <S20000><S30100>
**
** The sqlite3_initialize() routine initializes the
** SQLite library.  The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().
** This routines are designed to aid in process initialization and
** shutdown on embedded systems.  Workstation applications using
** SQLite normally do not need to invoke either of these routines.
**
** A call to sqlite3_initialize() is an "effective" call if it is
** the first time sqlite3_initialize() is invoked during the lifetime of
** the process, or if it is the first time sqlite3_initialize() is invoked
** following a call to sqlite3_shutdown().  Only an effective call
** of sqlite3_initialize() does any initialization.  All other calls
** are harmless no-ops.
**
** A call to sqlite3_shutdown() is an "effective" call if it is the first
** call to sqlite3_shutdown() since the last sqlite3_initialize().  Only
** an effective call to sqlite3_shutdown() does any deinitialization.
** All other valid calls to sqlite3_shutdown() are harmless no-ops.
**
** The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown()
** is not.  The sqlite3_shutdown() interface must only be called from a
** single thread.  All open [database connections] must be closed and all
** other SQLite resources must be deallocated prior to invoking
** sqlite3_shutdown().
**
** Among other things, sqlite3_initialize() will invoke
** sqlite3_os_init().  Similarly, sqlite3_shutdown()
** will invoke sqlite3_os_end().
**
** The sqlite3_initialize() routine returns [SQLITE_OK] on success.
** If for some reason, sqlite3_initialize() is unable to initialize
** the library (perhaps it is unable to allocate a needed resource such
** as a mutex) it returns an [error code] other than [SQLITE_OK].
**
** The sqlite3_initialize() routine is called internally by many other
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** Requirements:
** [H12762] [H12766] [H12769]
*/
SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);

/*
** CAPI3REF: Run-Time Limit Categories {H12790} <H12760>
** KEYWORDS: {limit category} {limit categories}
**
** These constants define various performance limits
** that can be lowered at run-time using [sqlite3_limit()].
** The synopsis of the meanings of the various limits is shown below.
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>







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** Requirements:
** [H12762] [H12766] [H12769]
*/
SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);

/*
** CAPI3REF: Run-Time Limit Categories {H12790} <H12760>
** KEYWORDS: {limit category} {*limit categories}
**
** These constants define various performance limits
** that can be lowered at run-time using [sqlite3_limit()].
** The synopsis of the meanings of the various limits is shown below.
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
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**
** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
** recommended for all new programs. The two older interfaces are retained
** for backwards compatibility, but their use is discouraged.
** In the "v2" interfaces, the prepared statement
** that is returned (the [sqlite3_stmt] object) contains a copy of the
** original SQL text. This causes the [sqlite3_step()] interface to
** behave a differently in two ways:
**
** <ol>
** <li>
** If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
** always used to do, [sqlite3_step()] will automatically recompile the SQL
** statement and try to run it again.  If the schema has changed in
** a way that makes the statement no longer valid, [sqlite3_step()] will still







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**
** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
** recommended for all new programs. The two older interfaces are retained
** for backwards compatibility, but their use is discouraged.
** In the "v2" interfaces, the prepared statement
** that is returned (the [sqlite3_stmt] object) contains a copy of the
** original SQL text. This causes the [sqlite3_step()] interface to
** behave a differently in three ways:
**
** <ol>
** <li>
** If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
** always used to do, [sqlite3_step()] will automatically recompile the SQL
** statement and try to run it again.  If the schema has changed in
** a way that makes the statement no longer valid, [sqlite3_step()] will still
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** When an error occurs, [sqlite3_step()] will return one of the detailed
** [error codes] or [extended error codes].  The legacy behavior was that
** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
** and you would have to make a second call to [sqlite3_reset()] in order
** to find the underlying cause of the problem. With the "v2" prepare
** interfaces, the underlying reason for the error is returned immediately.
** </li>








** </ol>
**
** Requirements:
** [H13011] [H13012] [H13013] [H13014] [H13015] [H13016] [H13019] [H13021]
**
*/
SQLITE_API int sqlite3_prepare(







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** When an error occurs, [sqlite3_step()] will return one of the detailed
** [error codes] or [extended error codes].  The legacy behavior was that
** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
** and you would have to make a second call to [sqlite3_reset()] in order
** to find the underlying cause of the problem. With the "v2" prepare
** interfaces, the underlying reason for the error is returned immediately.
** </li>
**
** <li>
** ^If the value of a [parameter | host parameter] in the WHERE clause might
** change the query plan for a statement, then the statement may 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 the [parameter]. 
** </li>
** </ol>
**
** Requirements:
** [H13011] [H13012] [H13013] [H13014] [H13015] [H13016] [H13019] [H13021]
**
*/
SQLITE_API int sqlite3_prepare(
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**
** These routines return information about a single column of the current
** result row of a query.  In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned.  The leftmost column of the result set has the index 0.


**
** If the SQL statement does not currently point to a valid row, or if the
** column index is out of range, the result is undefined.
** These routines may only be called when the most recent call to
** [sqlite3_step()] has returned [SQLITE_ROW] and neither
** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
** If any of these routines are called after [sqlite3_reset()] or







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**
** These routines return information about a single column of the current
** result row of a query.  In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned.  The leftmost column of the result set has the index 0.
** The number of columns in the result can be determined using
** [sqlite3_column_count()].
**
** If the SQL statement does not currently point to a valid row, or if the
** column index is out of range, the result is undefined.
** These routines may only be called when the most recent call to
** [sqlite3_step()] has returned [SQLITE_ROW] and neither
** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
** If any of these routines are called after [sqlite3_reset()] or
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#define OP_MakeRecord                          72
#define OP_ToBlob                             140   /* same as TK_TO_BLOB  */
#define OP_ResultRow                           81
#define OP_Delete                              92
#define OP_AggFinal                            95
#define OP_Compare                             96
#define OP_ShiftLeft                           84   /* same as TK_LSHIFT   */

#define OP_Goto                                97
#define OP_TableLock                           98
#define OP_Clear                               99
#define OP_Le                                  78   /* same as TK_LE       */
#define OP_VerifyCookie                       100
#define OP_AggStep                            101
#define OP_ToText                             139   /* same as TK_TO_TEXT  */
#define OP_Not                                 19   /* same as TK_NOT      */
#define OP_ToReal                             143   /* same as TK_TO_REAL  */
#define OP_Transaction                        102
#define OP_VFilter                            103
#define OP_Ne                                  75   /* same as TK_NE       */
#define OP_VDestroy                           104
#define OP_BitOr                               83   /* same as TK_BITOR    */
#define OP_Next                               105
#define OP_Count                              106
#define OP_IdxInsert                          107
#define OP_Lt                                  79   /* same as TK_LT       */
#define OP_FkIfZero                           108
#define OP_SeekGe                             109
#define OP_Insert                             110
#define OP_Destroy                            111
#define OP_ReadCookie                         112
#define OP_RowSetTest                         113
#define OP_LoadAnalysis                       114
#define OP_Explain                            115
#define OP_HaltIfNull                         116
#define OP_OpenPseudo                         117
#define OP_OpenEphemeral                      118
#define OP_Null                               119
#define OP_Move                               120
#define OP_Blob                               121
#define OP_Add                                 86   /* same as TK_PLUS     */
#define OP_Rewind                             122
#define OP_SeekGt                             123
#define OP_VBegin                             124
#define OP_VUpdate                            125
#define OP_IfZero                             126
#define OP_BitNot                              93   /* same as TK_BITNOT   */
#define OP_VCreate                            127
#define OP_Found                              128
#define OP_IfPos                              129
#define OP_NullRow                            131
#define OP_Jump                               132
#define OP_Permutation                        133

/* The following opcode values are never used */
#define OP_NotUsed_134                        134
#define OP_NotUsed_135                        135
#define OP_NotUsed_136                        136
#define OP_NotUsed_137                        137
#define OP_NotUsed_138                        138


/* Properties such as "out2" or "jump" that are specified in







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#define OP_MakeRecord                          72
#define OP_ToBlob                             140   /* same as TK_TO_BLOB  */
#define OP_ResultRow                           81
#define OP_Delete                              92
#define OP_AggFinal                            95
#define OP_Compare                             96
#define OP_ShiftLeft                           84   /* same as TK_LSHIFT   */
#define OP_InsertInt                           97
#define OP_Goto                                98
#define OP_TableLock                           99
#define OP_Clear                              100
#define OP_Le                                  78   /* same as TK_LE       */
#define OP_VerifyCookie                       101
#define OP_AggStep                            102
#define OP_ToText                             139   /* same as TK_TO_TEXT  */
#define OP_Not                                 19   /* same as TK_NOT      */
#define OP_ToReal                             143   /* same as TK_TO_REAL  */
#define OP_Transaction                        103
#define OP_VFilter                            104
#define OP_Ne                                  75   /* same as TK_NE       */
#define OP_VDestroy                           105
#define OP_BitOr                               83   /* same as TK_BITOR    */
#define OP_Next                               106
#define OP_Count                              107
#define OP_IdxInsert                          108
#define OP_Lt                                  79   /* same as TK_LT       */
#define OP_FkIfZero                           109
#define OP_SeekGe                             110
#define OP_Insert                             111
#define OP_Destroy                            112
#define OP_ReadCookie                         113
#define OP_RowSetTest                         114
#define OP_LoadAnalysis                       115
#define OP_Explain                            116
#define OP_HaltIfNull                         117
#define OP_OpenPseudo                         118
#define OP_OpenEphemeral                      119
#define OP_Null                               120
#define OP_Move                               121
#define OP_Blob                               122
#define OP_Add                                 86   /* same as TK_PLUS     */
#define OP_Rewind                             123
#define OP_SeekGt                             124
#define OP_VBegin                             125
#define OP_VUpdate                            126
#define OP_IfZero                             127
#define OP_BitNot                              93   /* same as TK_BITNOT   */
#define OP_VCreate                            128
#define OP_Found                              129
#define OP_IfPos                              131
#define OP_NullRow                            132
#define OP_Jump                               133
#define OP_Permutation                        134

/* The following opcode values are never used */

#define OP_NotUsed_135                        135
#define OP_NotUsed_136                        136
#define OP_NotUsed_137                        137
#define OP_NotUsed_138                        138


/* Properties such as "out2" or "jump" that are specified in
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
/*  40 */ 0x05, 0x00, 0x02, 0x11, 0x04, 0x00, 0x08, 0x11,\
/*  48 */ 0x01, 0x02, 0x01, 0x21, 0x08, 0x00, 0x02, 0x01,\
/*  56 */ 0x11, 0x01, 0x02, 0x00, 0x04, 0x00, 0x00, 0x02,\
/*  64 */ 0x11, 0x00, 0x00, 0x05, 0x2c, 0x2c, 0x00, 0x11,\
/*  72 */ 0x00, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
/*  80 */ 0x15, 0x00, 0x2c, 0x2c, 0x2c, 0x2c, 0x2c, 0x2c,\
/*  88 */ 0x2c, 0x2c, 0x2c, 0x2c, 0x00, 0x04, 0x02, 0x00,\
/*  96 */ 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,\
/* 104 */ 0x00, 0x01, 0x02, 0x08, 0x01, 0x11, 0x00, 0x02,\
/* 112 */ 0x02, 0x15, 0x00, 0x00, 0x10, 0x00, 0x00, 0x02,\
/* 120 */ 0x00, 0x02, 0x01, 0x11, 0x00, 0x00, 0x05, 0x00,\
/* 128 */ 0x11, 0x05, 0x02, 0x00, 0x01, 0x00, 0x00, 0x00,\
/* 136 */ 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04,\
}

/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/

/*







|
|
|
|
|







7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
/*  40 */ 0x05, 0x00, 0x02, 0x11, 0x04, 0x00, 0x08, 0x11,\
/*  48 */ 0x01, 0x02, 0x01, 0x21, 0x08, 0x00, 0x02, 0x01,\
/*  56 */ 0x11, 0x01, 0x02, 0x00, 0x04, 0x00, 0x00, 0x02,\
/*  64 */ 0x11, 0x00, 0x00, 0x05, 0x2c, 0x2c, 0x00, 0x11,\
/*  72 */ 0x00, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15, 0x15,\
/*  80 */ 0x15, 0x00, 0x2c, 0x2c, 0x2c, 0x2c, 0x2c, 0x2c,\
/*  88 */ 0x2c, 0x2c, 0x2c, 0x2c, 0x00, 0x04, 0x02, 0x00,\
/*  96 */ 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 104 */ 0x01, 0x00, 0x01, 0x02, 0x08, 0x01, 0x11, 0x00,\
/* 112 */ 0x02, 0x02, 0x15, 0x00, 0x00, 0x10, 0x00, 0x00,\
/* 120 */ 0x02, 0x00, 0x02, 0x01, 0x11, 0x00, 0x00, 0x05,\
/* 128 */ 0x00, 0x11, 0x02, 0x05, 0x00, 0x01, 0x00, 0x00,\
/* 136 */ 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04,\
}

/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/

/*
7528
7529
7530
7531
7532
7533
7534


7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*);
SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe*, const char *z, int n, int);
SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe*,Vdbe*);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe*, int*, int*);
SQLITE_PRIVATE void sqlite3VdbeProgramDelete(sqlite3 *, SubProgram *, int);



#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
SQLITE_PRIVATE int sqlite3VdbeReleaseMemory(int);
#endif
SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,char*,int);
SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord*);
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);


#ifndef NDEBUG
SQLITE_PRIVATE   void sqlite3VdbeComment(Vdbe*, const char*, ...);







>
>

<
<
<







7537
7538
7539
7540
7541
7542
7543
7544
7545
7546



7547
7548
7549
7550
7551
7552
7553
SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*);
SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe*, const char *z, int n, int);
SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe*,Vdbe*);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe*, int*, int*);
SQLITE_PRIVATE void sqlite3VdbeProgramDelete(sqlite3 *, SubProgram *, int);
SQLITE_PRIVATE sqlite3_value *sqlite3VdbeGetValue(Vdbe*, int, u8);
SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe*, int);




SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,char*,int);
SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord*);
SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*);


#ifndef NDEBUG
SQLITE_PRIVATE   void sqlite3VdbeComment(Vdbe*, const char*, ...);
9195
9196
9197
9198
9199
9200
9201
9202

9203
9204
9205
9206
9207
9208
9209
  ** space is allocated for the fields below this point. An attempt to
  ** access them will result in a segfault or malfunction.
  *********************************************************************/

  int iTable;            /* TK_COLUMN: cursor number of table holding column
                         ** TK_REGISTER: register number
                         ** TK_TRIGGER: 1 -> new, 0 -> old */
  i16 iColumn;           /* TK_COLUMN: column index.  -1 for rowid */

  i16 iAgg;              /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
  i16 iRightJoinTable;   /* If EP_FromJoin, the right table of the join */
  u8 flags2;             /* Second set of flags.  EP2_... */
  u8 op2;                /* If a TK_REGISTER, the original value of Expr.op */
  AggInfo *pAggInfo;     /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
  Table *pTab;           /* Table for TK_COLUMN expressions. */
#if SQLITE_MAX_EXPR_DEPTH>0







|
>







9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
  ** space is allocated for the fields below this point. An attempt to
  ** access them will result in a segfault or malfunction.
  *********************************************************************/

  int iTable;            /* TK_COLUMN: cursor number of table holding column
                         ** TK_REGISTER: register number
                         ** TK_TRIGGER: 1 -> new, 0 -> old */
  i16 iColumn;           /* TK_COLUMN: column index.  -1 for rowid.
                         ** TK_VARIABLE: variable number (always >= 1). */
  i16 iAgg;              /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
  i16 iRightJoinTable;   /* If EP_FromJoin, the right table of the join */
  u8 flags2;             /* Second set of flags.  EP2_... */
  u8 op2;                /* If a TK_REGISTER, the original value of Expr.op */
  AggInfo *pAggInfo;     /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
  Table *pTab;           /* Table for TK_COLUMN expressions. */
#if SQLITE_MAX_EXPR_DEPTH>0
9737
9738
9739
9740
9741
9742
9743

9744
9745
9746
9747
9748
9749
9750
  /* Above is constant between recursions.  Below is reset before and after
  ** each recursion */

  int nVar;            /* Number of '?' variables seen in the SQL so far */
  int nVarExpr;        /* Number of used slots in apVarExpr[] */
  int nVarExprAlloc;   /* Number of allocated slots in apVarExpr[] */
  Expr **apVarExpr;    /* Pointers to :aaa and $aaaa wildcard expressions */

  int nAlias;          /* Number of aliased result set columns */
  int nAliasAlloc;     /* Number of allocated slots for aAlias[] */
  int *aAlias;         /* Register used to hold aliased result */
  u8 explain;          /* True if the EXPLAIN flag is found on the query */
  Token sNameToken;    /* Token with unqualified schema object name */
  Token sLastToken;    /* The last token parsed */
  const char *zTail;   /* All SQL text past the last semicolon parsed */







>







9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
  /* Above is constant between recursions.  Below is reset before and after
  ** each recursion */

  int nVar;            /* Number of '?' variables seen in the SQL so far */
  int nVarExpr;        /* Number of used slots in apVarExpr[] */
  int nVarExprAlloc;   /* Number of allocated slots in apVarExpr[] */
  Expr **apVarExpr;    /* Pointers to :aaa and $aaaa wildcard expressions */
  Vdbe *pReprepare;    /* VM being reprepared (sqlite3Reprepare()) */
  int nAlias;          /* Number of aliased result set columns */
  int nAliasAlloc;     /* Number of allocated slots for aAlias[] */
  int *aAlias;         /* Register used to hold aliased result */
  u8 explain;          /* True if the EXPLAIN flag is found on the query */
  Token sNameToken;    /* Token with unqualified schema object name */
  Token sLastToken;    /* The last token parsed */
  const char *zTail;   /* All SQL text past the last semicolon parsed */
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
SQLITE_PRIVATE void sqlite3Vacuum(Parse*);
SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*);
SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3*, Token*);
SQLITE_PRIVATE int sqlite3ExprCompare(Expr*, Expr*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse*);
SQLITE_PRIVATE Expr *sqlite3CreateIdExpr(Parse *, const char*);
SQLITE_PRIVATE void sqlite3PrngSaveState(void);
SQLITE_PRIVATE void sqlite3PrngRestoreState(void);
SQLITE_PRIVATE void sqlite3PrngResetState(void);
SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3*);
SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse*, int);
SQLITE_PRIVATE void sqlite3BeginTransaction(Parse*, int);
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse*);







<







10256
10257
10258
10259
10260
10261
10262

10263
10264
10265
10266
10267
10268
10269
SQLITE_PRIVATE void sqlite3Vacuum(Parse*);
SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*);
SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3*, Token*);
SQLITE_PRIVATE int sqlite3ExprCompare(Expr*, Expr*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse*);

SQLITE_PRIVATE void sqlite3PrngSaveState(void);
SQLITE_PRIVATE void sqlite3PrngRestoreState(void);
SQLITE_PRIVATE void sqlite3PrngResetState(void);
SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3*);
SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse*, int);
SQLITE_PRIVATE void sqlite3BeginTransaction(Parse*, int);
SQLITE_PRIVATE void sqlite3CommitTransaction(Parse*);
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
SQLITE_PRIVATE void sqlite3RootPageMoved(Db*, int, int);
SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
SQLITE_PRIVATE void sqlite3AlterFunctions(sqlite3*);
SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *, int *);
SQLITE_PRIVATE void sqlite3NestedParse(Parse*, const char*, ...);
SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3*);
SQLITE_PRIVATE void sqlite3CodeSubselect(Parse *, Expr *, int, int);
SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*);
SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*);
SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*);
SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *, Table *, int, int);
SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *, Token *);
SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *, SrcList *);







|







10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
SQLITE_PRIVATE void sqlite3RootPageMoved(Db*, int, int);
SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
SQLITE_PRIVATE void sqlite3AlterFunctions(sqlite3*);
SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *, int *);
SQLITE_PRIVATE void sqlite3NestedParse(Parse*, const char*, ...);
SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3*);
SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *, Expr *, int, int);
SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*);
SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*);
SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*);
SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *, Table *, int, int);
SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *, Token *);
SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
10480
10481
10482
10483
10484
10485
10486

10487
10488
10489
10490
10491
10492
10493
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);


SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *);
SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);

/*
** The interface to the LEMON-generated parser
*/







>







10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);

SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *);
SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);

/*
** The interface to the LEMON-generated parser
*/
15698
15699
15700
15701
15702
15703
15704
15705
15706
15707
15708
15709
15710
15711
15712
15713
15714
** Attempt to release up to n bytes of non-essential memory currently
** held by SQLite. An example of non-essential memory is memory used to
** cache database pages that are not currently in use.
*/
SQLITE_API int sqlite3_release_memory(int n){
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
  int nRet = 0;
#if 0
  nRet += sqlite3VdbeReleaseMemory(n);
#endif
  nRet += sqlite3PcacheReleaseMemory(n-nRet);
  return nRet;
#else
  UNUSED_PARAMETER(n);
  return SQLITE_OK;
#endif
}







<
<
<







15708
15709
15710
15711
15712
15713
15714



15715
15716
15717
15718
15719
15720
15721
** Attempt to release up to n bytes of non-essential memory currently
** held by SQLite. An example of non-essential memory is memory used to
** cache database pages that are not currently in use.
*/
SQLITE_API int sqlite3_release_memory(int n){
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
  int nRet = 0;



  nRet += sqlite3PcacheReleaseMemory(n-nRet);
  return nRet;
#else
  UNUSED_PARAMETER(n);
  return SQLITE_OK;
#endif
}
17822
17823
17824
17825
17826
17827
17828

17829
17830
17831
17832
17833
17834
17835
  i64 nStmtDefCons;       /* Number of def. constraints when stmt started */
  int iStatement;         /* Statement number (or 0 if has not opened stmt) */
#ifdef SQLITE_DEBUG
  FILE *trace;            /* Write an execution trace here, if not NULL */
#endif
  VdbeFrame *pFrame;      /* Parent frame */
  int nFrame;             /* Number of frames in pFrame list */

};

/*
** The following are allowed values for Vdbe.magic
*/
#define VDBE_MAGIC_INIT     0x26bceaa5    /* Building a VDBE program */
#define VDBE_MAGIC_RUN      0xbdf20da3    /* VDBE is ready to execute */







>







17829
17830
17831
17832
17833
17834
17835
17836
17837
17838
17839
17840
17841
17842
17843
  i64 nStmtDefCons;       /* Number of def. constraints when stmt started */
  int iStatement;         /* Statement number (or 0 if has not opened stmt) */
#ifdef SQLITE_DEBUG
  FILE *trace;            /* Write an execution trace here, if not NULL */
#endif
  VdbeFrame *pFrame;      /* Parent frame */
  int nFrame;             /* Number of frames in pFrame list */
  u32 expmask;            /* Binding to these vars invalidates VM */
};

/*
** The following are allowed values for Vdbe.magic
*/
#define VDBE_MAGIC_INIT     0x26bceaa5    /* Building a VDBE program */
#define VDBE_MAGIC_RUN      0xbdf20da3    /* VDBE is ready to execute */
17884
17885
17886
17887
17888
17889
17890
17891
17892
17893
17894
17895
17896
17897
17898
17899
17900
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
SQLITE_PRIVATE int sqlite3VdbeOpcodeHasProperty(int, int);
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *, int);
SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*);
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *);
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
SQLITE_PRIVATE int sqlite3VdbeReleaseBuffers(Vdbe *p);
#endif

#ifndef SQLITE_OMIT_FOREIGN_KEY
SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *, int);
#else
# define sqlite3VdbeCheckFk(p,i) 0
#endif








<
|
<







17892
17893
17894
17895
17896
17897
17898

17899

17900
17901
17902
17903
17904
17905
17906
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
SQLITE_PRIVATE int sqlite3VdbeOpcodeHasProperty(int, int);
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *, int);
SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*);
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *);

SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem);


#ifndef SQLITE_OMIT_FOREIGN_KEY
SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *, int);
#else
# define sqlite3VdbeCheckFk(p,i) 0
#endif

17986
17987
17988
17989
17990
17991
17992
17993
17994
17995
17996
17997
17998
17999
18000
18001
18002
18003
18004
18005
18006
18007
18008
18009
18010
18011
18012
18013
    *zOut++ = (u8)(0x00D8 + (((c-0x10000)>>18)&0x03));              \
    *zOut++ = (u8)(((c>>10)&0x003F) + (((c-0x10000)>>10)&0x00C0));  \
    *zOut++ = (u8)(0x00DC + ((c>>8)&0x03));                         \
    *zOut++ = (u8)(c&0x00FF);                                       \
  }                                                                 \
}

#define READ_UTF16LE(zIn, c){                                         \
  c = (*zIn++);                                                       \
  c += ((*zIn++)<<8);                                                 \
  if( c>=0xD800 && c<0xE000 ){                                        \
    int c2 = (*zIn++);                                                \
    c2 += ((*zIn++)<<8);                                              \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

#define READ_UTF16BE(zIn, c){                                         \
  c = ((*zIn++)<<8);                                                  \
  c += (*zIn++);                                                      \
  if( c>=0xD800 && c<0xE000 ){                                        \
    int c2 = ((*zIn++)<<8);                                           \
    c2 += (*zIn++);                                                   \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

/*







|


|






|


|







17992
17993
17994
17995
17996
17997
17998
17999
18000
18001
18002
18003
18004
18005
18006
18007
18008
18009
18010
18011
18012
18013
18014
18015
18016
18017
18018
18019
    *zOut++ = (u8)(0x00D8 + (((c-0x10000)>>18)&0x03));              \
    *zOut++ = (u8)(((c>>10)&0x003F) + (((c-0x10000)>>10)&0x00C0));  \
    *zOut++ = (u8)(0x00DC + ((c>>8)&0x03));                         \
    *zOut++ = (u8)(c&0x00FF);                                       \
  }                                                                 \
}

#define READ_UTF16LE(zIn, TERM, c){                                   \
  c = (*zIn++);                                                       \
  c += ((*zIn++)<<8);                                                 \
  if( c>=0xD800 && c<0xE000 && TERM ){                                \
    int c2 = (*zIn++);                                                \
    c2 += ((*zIn++)<<8);                                              \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

#define READ_UTF16BE(zIn, TERM, c){                                   \
  c = ((*zIn++)<<8);                                                  \
  c += (*zIn++);                                                      \
  if( c>=0xD800 && c<0xE000 && TERM ){                                \
    int c2 = ((*zIn++)<<8);                                           \
    c2 += (*zIn++);                                                   \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

/*
18184
18185
18186
18187
18188
18189
18190
18191
18192
18193
18194
18195
18196
18197
18198
18199
18200
18201
18202
18203
18204
    pMem->n = (int)(z - zOut);
    *z++ = 0;
  }else{
    assert( desiredEnc==SQLITE_UTF8 );
    if( pMem->enc==SQLITE_UTF16LE ){
      /* UTF-16 Little-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16LE(zIn, c); 
        WRITE_UTF8(z, c);
      }
    }else{
      /* UTF-16 Big-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16BE(zIn, c); 
        WRITE_UTF8(z, c);
      }
    }
    pMem->n = (int)(z - zOut);
  }
  *z = 0;
  assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len );







|





|







18190
18191
18192
18193
18194
18195
18196
18197
18198
18199
18200
18201
18202
18203
18204
18205
18206
18207
18208
18209
18210
    pMem->n = (int)(z - zOut);
    *z++ = 0;
  }else{
    assert( desiredEnc==SQLITE_UTF8 );
    if( pMem->enc==SQLITE_UTF16LE ){
      /* UTF-16 Little-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16LE(zIn, zIn<zTerm, c); 
        WRITE_UTF8(z, c);
      }
    }else{
      /* UTF-16 Big-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16BE(zIn, zIn<zTerm, c); 
        WRITE_UTF8(z, c);
      }
    }
    pMem->n = (int)(z - zOut);
  }
  *z = 0;
  assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len );
18360
18361
18362
18363
18364
18365
18366
18367
18368
18369
18370
18371
18372
18373
18374

18375
18376
18377
18378
18379
18380
18381
18382
18383
18384
18385
18386
18387
18388
18389
18390
18391
18392
18393
18394
18395
18396
18397
18398
  assert( m.z==m.zMalloc );
  *pnOut = m.n;
  return m.z;
}
#endif

/*
** pZ is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters
** in pZ.  nChar must be non-negative.
*/
SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *zIn, int nChar){
  int c;
  unsigned char const *z = zIn;
  int n = 0;

  if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
    /* Using an "if (SQLITE_UTF16NATIVE==SQLITE_UTF16BE)" construct here
    ** and in other parts of this file means that at one branch will
    ** not be covered by coverage testing on any single host. But coverage
    ** will be complete if the tests are run on both a little-endian and 
    ** big-endian host. Because both the UTF16NATIVE and SQLITE_UTF16BE
    ** macros are constant at compile time the compiler can determine
    ** which branch will be followed. It is therefore assumed that no runtime
    ** penalty is paid for this "if" statement.
    */
    while( n<nChar ){
      READ_UTF16BE(z, c);
      n++;
    }
  }else{
    while( n<nChar ){
      READ_UTF16LE(z, c);
      n++;
    }
  }
  return (int)(z-(unsigned char const *)zIn);
}

#if defined(SQLITE_TEST)







|







>

<
<
<
<
<
<
<
<
<

|




|







18366
18367
18368
18369
18370
18371
18372
18373
18374
18375
18376
18377
18378
18379
18380
18381
18382









18383
18384
18385
18386
18387
18388
18389
18390
18391
18392
18393
18394
18395
18396
  assert( m.z==m.zMalloc );
  *pnOut = m.n;
  return m.z;
}
#endif

/*
** zIn is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters
** in pZ.  nChar must be non-negative.
*/
SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *zIn, int nChar){
  int c;
  unsigned char const *z = zIn;
  int n = 0;
  
  if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){









    while( n<nChar ){
      READ_UTF16BE(z, 1, c);
      n++;
    }
  }else{
    while( n<nChar ){
      READ_UTF16LE(z, 1, c);
      n++;
    }
  }
  return (int)(z-(unsigned char const *)zIn);
}

#if defined(SQLITE_TEST)
18426
18427
18428
18429
18430
18431
18432
18433
18434
18435
18436
18437
18438
18439
18440
18441
18442
18443
18444
18445
18446
18447
18448
18449
18450
18451
18452
    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16LE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16LE(z, c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
  for(i=0; i<0x00110000; i++){
    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16BE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16BE(z, c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
}
#endif /* SQLITE_TEST */
#endif /* SQLITE_OMIT_UTF16 */








|











|







18424
18425
18426
18427
18428
18429
18430
18431
18432
18433
18434
18435
18436
18437
18438
18439
18440
18441
18442
18443
18444
18445
18446
18447
18448
18449
18450
    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16LE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16LE(z, 1, c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
  for(i=0; i<0x00110000; i++){
    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16BE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16BE(z, 1, c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
}
#endif /* SQLITE_TEST */
#endif /* SQLITE_OMIT_UTF16 */

19924
19925
19926
19927
19928
19929
19930
19931
19932
19933
19934
19935
19936
19937
19938
19939
19940
19941
19942
19943
19944
19945
19946
19947
19948
19949
19950
19951
19952
19953
19954
19955
19956
19957
19958
19959
19960
19961
19962
19963
19964
19965
19966
19967
19968
19969
19970
19971
19972
19973
19974
19975
     /*  90 */ "Remainder",
     /*  91 */ "Concat",
     /*  92 */ "Delete",
     /*  93 */ "BitNot",
     /*  94 */ "String8",
     /*  95 */ "AggFinal",
     /*  96 */ "Compare",
     /*  97 */ "Goto",
     /*  98 */ "TableLock",
     /*  99 */ "Clear",
     /* 100 */ "VerifyCookie",
     /* 101 */ "AggStep",
     /* 102 */ "Transaction",
     /* 103 */ "VFilter",
     /* 104 */ "VDestroy",
     /* 105 */ "Next",
     /* 106 */ "Count",
     /* 107 */ "IdxInsert",
     /* 108 */ "FkIfZero",
     /* 109 */ "SeekGe",
     /* 110 */ "Insert",
     /* 111 */ "Destroy",
     /* 112 */ "ReadCookie",
     /* 113 */ "RowSetTest",
     /* 114 */ "LoadAnalysis",
     /* 115 */ "Explain",
     /* 116 */ "HaltIfNull",
     /* 117 */ "OpenPseudo",
     /* 118 */ "OpenEphemeral",
     /* 119 */ "Null",
     /* 120 */ "Move",
     /* 121 */ "Blob",
     /* 122 */ "Rewind",
     /* 123 */ "SeekGt",
     /* 124 */ "VBegin",
     /* 125 */ "VUpdate",
     /* 126 */ "IfZero",
     /* 127 */ "VCreate",
     /* 128 */ "Found",
     /* 129 */ "IfPos",
     /* 130 */ "Real",
     /* 131 */ "NullRow",
     /* 132 */ "Jump",
     /* 133 */ "Permutation",
     /* 134 */ "NotUsed_134",
     /* 135 */ "NotUsed_135",
     /* 136 */ "NotUsed_136",
     /* 137 */ "NotUsed_137",
     /* 138 */ "NotUsed_138",
     /* 139 */ "ToText",
     /* 140 */ "ToBlob",
     /* 141 */ "ToNumeric",







|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|

|
|
|
|







19922
19923
19924
19925
19926
19927
19928
19929
19930
19931
19932
19933
19934
19935
19936
19937
19938
19939
19940
19941
19942
19943
19944
19945
19946
19947
19948
19949
19950
19951
19952
19953
19954
19955
19956
19957
19958
19959
19960
19961
19962
19963
19964
19965
19966
19967
19968
19969
19970
19971
19972
19973
     /*  90 */ "Remainder",
     /*  91 */ "Concat",
     /*  92 */ "Delete",
     /*  93 */ "BitNot",
     /*  94 */ "String8",
     /*  95 */ "AggFinal",
     /*  96 */ "Compare",
     /*  97 */ "InsertInt",
     /*  98 */ "Goto",
     /*  99 */ "TableLock",
     /* 100 */ "Clear",
     /* 101 */ "VerifyCookie",
     /* 102 */ "AggStep",
     /* 103 */ "Transaction",
     /* 104 */ "VFilter",
     /* 105 */ "VDestroy",
     /* 106 */ "Next",
     /* 107 */ "Count",
     /* 108 */ "IdxInsert",
     /* 109 */ "FkIfZero",
     /* 110 */ "SeekGe",
     /* 111 */ "Insert",
     /* 112 */ "Destroy",
     /* 113 */ "ReadCookie",
     /* 114 */ "RowSetTest",
     /* 115 */ "LoadAnalysis",
     /* 116 */ "Explain",
     /* 117 */ "HaltIfNull",
     /* 118 */ "OpenPseudo",
     /* 119 */ "OpenEphemeral",
     /* 120 */ "Null",
     /* 121 */ "Move",
     /* 122 */ "Blob",
     /* 123 */ "Rewind",
     /* 124 */ "SeekGt",
     /* 125 */ "VBegin",
     /* 126 */ "VUpdate",
     /* 127 */ "IfZero",
     /* 128 */ "VCreate",
     /* 129 */ "Found",
     /* 130 */ "Real",
     /* 131 */ "IfPos",
     /* 132 */ "NullRow",
     /* 133 */ "Jump",
     /* 134 */ "Permutation",
     /* 135 */ "NotUsed_135",
     /* 136 */ "NotUsed_136",
     /* 137 */ "NotUsed_137",
     /* 138 */ "NotUsed_138",
     /* 139 */ "ToText",
     /* 140 */ "ToBlob",
     /* 141 */ "ToNumeric",
24094
24095
24096
24097
24098
24099
24100
24101

24102
24103
24104
24105
24106
24107
24108
    }
  }
  
  /* If control gets to this point, then actually go ahead and make
  ** operating system calls for the specified lock.
  */
  if( locktype==SHARED_LOCK ){
    int lk, lrc1, lrc2, lrc1Errno;

    
    /* Now get the read-lock SHARED_LOCK */
    /* note that the quality of the randomness doesn't matter that much */
    lk = random(); 
    context->sharedByte = (lk & 0x7fffffff)%(SHARED_SIZE - 1);
    lrc1 = afpSetLock(context->dbPath, pFile, 
          SHARED_FIRST+context->sharedByte, 1, 1);







|
>







24092
24093
24094
24095
24096
24097
24098
24099
24100
24101
24102
24103
24104
24105
24106
24107
    }
  }
  
  /* If control gets to this point, then actually go ahead and make
  ** operating system calls for the specified lock.
  */
  if( locktype==SHARED_LOCK ){
    int lk, lrc1, lrc2;
    int lrc1Errno = 0;
    
    /* Now get the read-lock SHARED_LOCK */
    /* note that the quality of the randomness doesn't matter that much */
    lk = random(); 
    context->sharedByte = (lk & 0x7fffffff)%(SHARED_SIZE - 1);
    lrc1 = afpSetLock(context->dbPath, pFile, 
          SHARED_FIRST+context->sharedByte, 1, 1);
27239
27240
27241
27242
27243
27244
27245
27246
27247
27248
27249
27250
27251
27252
27253

/*
** Determine if we are dealing with WindowsCE - which has a much
** reduced API.
*/
#if SQLITE_OS_WINCE
# define AreFileApisANSI() 1
# define GetDiskFreeSpaceW() 0
#endif

/*
** WinCE lacks native support for file locking so we have to fake it
** with some code of our own.
*/
#if SQLITE_OS_WINCE







|







27238
27239
27240
27241
27242
27243
27244
27245
27246
27247
27248
27249
27250
27251
27252

/*
** Determine if we are dealing with WindowsCE - which has a much
** reduced API.
*/
#if SQLITE_OS_WINCE
# define AreFileApisANSI() 1
# define FormatMessageW(a,b,c,d,e,f,g) 0
#endif

/*
** WinCE lacks native support for file locking so we have to fake it
** with some code of our own.
*/
#if SQLITE_OS_WINCE
28413
28414
28415
28416
28417
28418
28419
28420
28421
28422
28423
28424
28425
28426
28427
28428


























28429
28430
28431
28432
28433
28434

28435
28436


28437


28438
28439
28440








28441
28442
28443
28444
28445
28446
28447

/*
** The return value of getLastErrorMsg
** is zero if the error message fits in the buffer, or non-zero
** otherwise (if the message was truncated).
*/
static int getLastErrorMsg(int nBuf, char *zBuf){
  DWORD error = GetLastError();

#if SQLITE_OS_WINCE
  sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error);
#else
  /* FormatMessage returns 0 on failure.  Otherwise it
  ** returns the number of TCHARs written to the output
  ** buffer, excluding the terminating null char.
  */


























  if (!FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM,
                      NULL,
                      error,
                      0,
                      zBuf,
                      nBuf-1,

                      0))
  {


    sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error);


  }
#endif









  return 0;
}

/*
** Open a file.
*/
static int winOpen(







<
<
<
<
<




>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
|
|
|
|
<
>
|
<
>
>
|
>
>
|

|
>
>
>
>
>
>
>
>







28412
28413
28414
28415
28416
28417
28418





28419
28420
28421
28422
28423
28424
28425
28426
28427
28428
28429
28430
28431
28432
28433
28434
28435
28436
28437
28438
28439
28440
28441
28442
28443
28444
28445
28446
28447
28448
28449
28450
28451
28452
28453

28454
28455

28456
28457
28458
28459
28460
28461
28462
28463
28464
28465
28466
28467
28468
28469
28470
28471
28472
28473
28474
28475
28476
28477
28478

/*
** The return value of getLastErrorMsg
** is zero if the error message fits in the buffer, or non-zero
** otherwise (if the message was truncated).
*/
static int getLastErrorMsg(int nBuf, char *zBuf){





  /* FormatMessage returns 0 on failure.  Otherwise it
  ** returns the number of TCHARs written to the output
  ** buffer, excluding the terminating null char.
  */
  DWORD error = GetLastError();
  DWORD dwLen = 0;
  char *zOut;

  if( isNT() ){
    WCHAR *zTempWide = NULL;
    dwLen = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
                           NULL,
                           error,
                           0,
                           (LPWSTR) &zTempWide,
                           0,
                           0);
    if( dwLen > 0 ){
      /* allocate a buffer and convert to UTF8 */
      zOut = unicodeToUtf8(zTempWide);
      /* free the system buffer allocated by FormatMessage */
      LocalFree(zTempWide);
    }
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. 
** Since the ASCII version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
#if SQLITE_OS_WINCE==0
  }else{
    char *zTemp = NULL;
    dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
                           NULL,
                           error,
                           0,
                           (LPSTR) &zTemp,

                           0,
                           0);

    if( dwLen > 0 ){
      /* allocate a buffer and convert to UTF8 */
      zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
      /* free the system buffer allocated by FormatMessage */
      LocalFree(zTemp);
    }
#endif
  }
  if( 0 == dwLen ){
    sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error);
  }else{
    /* copy a maximum of nBuf chars to output buffer */
    sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
    /* free the UTF8 buffer */
    free(zOut);
  }
  return 0;
}

/*
** Open a file.
*/
static int winOpen(
28801
28802
28803
28804
28805
28806
28807
28808
28809
28810
28811
28812
28813
28814
28815
28816
28817
28818
28819
28820
28821
28822
        dwRet = GetDiskFreeSpaceW((WCHAR*)zConverted,
                                  &dwDummy,
                                  &bytesPerSector,
                                  &dwDummy,
                                  &dwDummy);
      }else{
        /* trim path to just drive reference */
        CHAR *p = (CHAR *)zConverted;
        for(;*p;p++){
          if( *p == '\\' ){
            *p = '\0';
            break;
          }
        }
        dwRet = GetDiskFreeSpaceA((CHAR*)zConverted,
                                  &dwDummy,
                                  &bytesPerSector,
                                  &dwDummy,
                                  &dwDummy);
      }
      free(zConverted);
    }







|






|







28832
28833
28834
28835
28836
28837
28838
28839
28840
28841
28842
28843
28844
28845
28846
28847
28848
28849
28850
28851
28852
28853
        dwRet = GetDiskFreeSpaceW((WCHAR*)zConverted,
                                  &dwDummy,
                                  &bytesPerSector,
                                  &dwDummy,
                                  &dwDummy);
      }else{
        /* trim path to just drive reference */
        char *p = (char *)zConverted;
        for(;*p;p++){
          if( *p == '\\' ){
            *p = '\0';
            break;
          }
        }
        dwRet = GetDiskFreeSpaceA((char*)zConverted,
                                  &dwDummy,
                                  &bytesPerSector,
                                  &dwDummy,
                                  &dwDummy);
      }
      free(zConverted);
    }
33087
33088
33089
33090
33091
33092
33093
33094
33095
33096
33097
33098
33099
33100
33101
33102
33103
33104
33105
33106
33107
33108
33109
33110
33111
33112
33113
33114
33115
**       number of page records from the journal size.
**  (3)  4 byte big-endian integer which is the initial value for the 
**       sanity checksum.
**  (4)  4 byte integer which is the number of pages to truncate the
**       database to during a rollback.
**  (5)  4 byte big-endian integer which is the sector size.  The header
**       is this many bytes in size.
**  (6)  4 byte big-endian integer which is the page case.
**  (7)  4 byte integer which is the number of bytes in the master journal
**       name.  The value may be zero (indicate that there is no master
**       journal.)
**  (8)  N bytes of the master journal name.  The name will be nul-terminated
**       and might be shorter than the value read from (5).  If the first byte
**       of the name is \000 then there is no master journal.  The master
**       journal name is stored in UTF-8.
**  (9)  Zero or more pages instances, each as follows:
**        +  4 byte page number.
**        +  pPager->pageSize bytes of data.
**        +  4 byte checksum
**
** When we speak of the journal header, we mean the first 8 items above.
** Each entry in the journal is an instance of the 9th item.
**
** Call the value from the second bullet "nRec".  nRec is the number of
** valid page entries in the journal.  In most cases, you can compute the
** value of nRec from the size of the journal file.  But if a power
** failure occurred while the journal was being written, it could be the
** case that the size of the journal file had already been increased but
** the extra entries had not yet made it safely to disk.  In such a case,







|
|
<
<
<
<
<
<
|




|
|







33118
33119
33120
33121
33122
33123
33124
33125
33126






33127
33128
33129
33130
33131
33132
33133
33134
33135
33136
33137
33138
33139
33140
**       number of page records from the journal size.
**  (3)  4 byte big-endian integer which is the initial value for the 
**       sanity checksum.
**  (4)  4 byte integer which is the number of pages to truncate the
**       database to during a rollback.
**  (5)  4 byte big-endian integer which is the sector size.  The header
**       is this many bytes in size.
**  (6)  4 byte big-endian integer which is the page size.
**  (7)  zero padding out to the next sector size.






**  (8)  Zero or more pages instances, each as follows:
**        +  4 byte page number.
**        +  pPager->pageSize bytes of data.
**        +  4 byte checksum
**
** When we speak of the journal header, we mean the first 7 items above.
** Each entry in the journal is an instance of the 8th item.
**
** Call the value from the second bullet "nRec".  nRec is the number of
** valid page entries in the journal.  In most cases, you can compute the
** value of nRec from the size of the journal file.  But if a power
** failure occurred while the journal was being written, it could be the
** case that the size of the journal file had already been increased but
** the extra entries had not yet made it safely to disk.  In such a case,
36667
36668
36669
36670
36671
36672
36673
36674
36675
36676
36677
36678
36679
36680
36681
36682
36683
** page has a small header which contains the Ptr(N) pointer and other
** information such as the size of key and data.
**
** FORMAT DETAILS
**
** The file is divided into pages.  The first page is called page 1,
** the second is page 2, and so forth.  A page number of zero indicates
** "no such page".  The page size can be anything between 512 and 65536.
** Each page can be either a btree page, a freelist page or an overflow
** page.
**
** The first page is always a btree page.  The first 100 bytes of the first
** page contain a special header (the "file header") that describes the file.
** The format of the file header is as follows:
**
**   OFFSET   SIZE    DESCRIPTION
**      0      16     Header string: "SQLite format 3\000"







|
|
|







36692
36693
36694
36695
36696
36697
36698
36699
36700
36701
36702
36703
36704
36705
36706
36707
36708
** page has a small header which contains the Ptr(N) pointer and other
** information such as the size of key and data.
**
** FORMAT DETAILS
**
** The file is divided into pages.  The first page is called page 1,
** the second is page 2, and so forth.  A page number of zero indicates
** "no such page".  The page size can be any power of 2 between 512 and 32768.
** Each page can be either a btree page, a freelist page, an overflow
** page, or a pointer-map page.
**
** The first page is always a btree page.  The first 100 bytes of the first
** page contain a special header (the "file header") that describes the file.
** The format of the file header is as follows:
**
**   OFFSET   SIZE    DESCRIPTION
**      0      16     Header string: "SQLite format 3\000"
36947
36948
36949
36950
36951
36952
36953
36954
36955
36956
36957
36958
36959
36960
36961
36962
** A database connection contains a pointer to an instance of
** this object for every database file that it has open.  This structure
** is opaque to the database connection.  The database connection cannot
** see the internals of this structure and only deals with pointers to
** this structure.
**
** For some database files, the same underlying database cache might be 
** shared between multiple connections.  In that case, each contection
** has it own pointer to this object.  But each instance of this object
** points to the same BtShared object.  The database cache and the
** schema associated with the database file are all contained within
** the BtShared object.
**
** All fields in this structure are accessed under sqlite3.mutex.
** The pBt pointer itself may not be changed while there exists cursors 
** in the referenced BtShared that point back to this Btree since those







|
|







36972
36973
36974
36975
36976
36977
36978
36979
36980
36981
36982
36983
36984
36985
36986
36987
** A database connection contains a pointer to an instance of
** this object for every database file that it has open.  This structure
** is opaque to the database connection.  The database connection cannot
** see the internals of this structure and only deals with pointers to
** this structure.
**
** For some database files, the same underlying database cache might be 
** shared between multiple connections.  In that case, each connection
** has it own instance of this object.  But each instance of this object
** points to the same BtShared object.  The database cache and the
** schema associated with the database file are all contained within
** the BtShared object.
**
** All fields in this structure are accessed under sqlite3.mutex.
** The pBt pointer itself may not be changed while there exists cursors 
** in the referenced BtShared that point back to this Btree since those
37089
37090
37091
37092
37093
37094
37095
37096
37097
37098
37099
37100
37101
37102
37103
/*
** A cursor is a pointer to a particular entry within a particular
** b-tree within a database file.
**
** The entry is identified by its MemPage and the index in
** MemPage.aCell[] of the entry.
**
** When a single database file can shared by two more database connections,
** but cursors cannot be shared.  Each cursor is associated with a
** particular database connection identified BtCursor.pBtree.db.
**
** Fields in this structure are accessed under the BtShared.mutex
** found at self->pBt->mutex. 
*/
struct BtCursor {







|







37114
37115
37116
37117
37118
37119
37120
37121
37122
37123
37124
37125
37126
37127
37128
/*
** A cursor is a pointer to a particular entry within a particular
** b-tree within a database file.
**
** The entry is identified by its MemPage and the index in
** MemPage.aCell[] of the entry.
**
** A single database file can shared by two more database connections,
** but cursors cannot be shared.  Each cursor is associated with a
** particular database connection identified BtCursor.pBtree.db.
**
** Fields in this structure are accessed under the BtShared.mutex
** found at self->pBt->mutex. 
*/
struct BtCursor {
37693
37694
37695
37696
37697
37698
37699
37700

37701
37702

37703
37704
37705
37706
37707
37708
37709
37710
37711
37712
37713
37714
37715
37716
37717
37718
37719
37720
37721
37722
37723
37724
37725
37726
37727
37728
37729
37730
37731
37732
37733
37734
37735
37736
37737
37738
37739
37740
37741









37742
37743
37744
37745
37746
37747
37748
  #define hasReadConflicts(a, b) 0
#endif

#ifndef SQLITE_OMIT_SHARED_CACHE

#ifdef SQLITE_DEBUG
/*
** This function is only used as part of an assert() statement. It checks

** that connection p holds the required locks to read or write to the 
** b-tree with root page iRoot. If so, true is returned. Otherwise, false. 

** For example, when writing to a table b-tree with root-page iRoot via 
** Btree connection pBtree:
**
**    assert( hasSharedCacheTableLock(pBtree, iRoot, 0, WRITE_LOCK) );
**
** When writing to an index b-tree that resides in a sharable database, the 
** caller should have first obtained a lock specifying the root page of
** the corresponding table b-tree. This makes things a bit more complicated,
** as this module treats each b-tree as a separate structure. To determine
** the table b-tree corresponding to the index b-tree being written, this
** function has to search through the database schema.
**
** Instead of a lock on the b-tree rooted at page iRoot, the caller may
** hold a write-lock on the schema table (root page 1). This is also
** acceptable.
*/
static int hasSharedCacheTableLock(
  Btree *pBtree,         /* Handle that must hold lock */
  Pgno iRoot,            /* Root page of b-tree */
  int isIndex,           /* True if iRoot is the root of an index b-tree */
  int eLockType          /* Required lock type (READ_LOCK or WRITE_LOCK) */
){
  Schema *pSchema = (Schema *)pBtree->pBt->pSchema;
  Pgno iTab = 0;
  BtLock *pLock;

  /* If this b-tree database is not shareable, or if the client is reading
  ** and has the read-uncommitted flag set, then no lock is required. 
  ** In these cases return true immediately.  If the client is reading 
  ** or writing an index b-tree, but the schema is not loaded, then return
  ** true also. In this case the lock is required, but it is too difficult
  ** to check if the client actually holds it. This doesn't happen very
  ** often.  */
  if( (pBtree->sharable==0)
   || (eLockType==READ_LOCK && (pBtree->db->flags & SQLITE_ReadUncommitted))
   || (isIndex && (!pSchema || (pSchema->flags&DB_SchemaLoaded)==0 ))
  ){
    return 1;
  }










  /* Figure out the root-page that the lock should be held on. For table
  ** b-trees, this is just the root page of the b-tree being read or
  ** written. For index b-trees, it is the root page of the associated
  ** table.  */
  if( isIndex ){
    HashElem *p;







|
>
|
|
>
|




|

|
|
|


|













|

|
<
<
<
|


<



>
>
>
>
>
>
>
>
>







37718
37719
37720
37721
37722
37723
37724
37725
37726
37727
37728
37729
37730
37731
37732
37733
37734
37735
37736
37737
37738
37739
37740
37741
37742
37743
37744
37745
37746
37747
37748
37749
37750
37751
37752
37753
37754
37755
37756
37757
37758



37759
37760
37761

37762
37763
37764
37765
37766
37767
37768
37769
37770
37771
37772
37773
37774
37775
37776
37777
37778
37779
37780
  #define hasReadConflicts(a, b) 0
#endif

#ifndef SQLITE_OMIT_SHARED_CACHE

#ifdef SQLITE_DEBUG
/*
**** This function is only used as part of an assert() statement. ***
**
** Check to see if pBtree holds the required locks to read or write to the 
** table with root page iRoot.   Return 1 if it does and 0 if not.
**
** For example, when writing to a table with root-page iRoot via 
** Btree connection pBtree:
**
**    assert( hasSharedCacheTableLock(pBtree, iRoot, 0, WRITE_LOCK) );
**
** When writing to an index that resides in a sharable database, the 
** caller should have first obtained a lock specifying the root page of
** the corresponding table. This makes things a bit more complicated,
** as this module treats each table as a separate structure. To determine
** the table corresponding to the index being written, this
** function has to search through the database schema.
**
** Instead of a lock on the table/index rooted at page iRoot, the caller may
** hold a write-lock on the schema table (root page 1). This is also
** acceptable.
*/
static int hasSharedCacheTableLock(
  Btree *pBtree,         /* Handle that must hold lock */
  Pgno iRoot,            /* Root page of b-tree */
  int isIndex,           /* True if iRoot is the root of an index b-tree */
  int eLockType          /* Required lock type (READ_LOCK or WRITE_LOCK) */
){
  Schema *pSchema = (Schema *)pBtree->pBt->pSchema;
  Pgno iTab = 0;
  BtLock *pLock;

  /* If this database is not shareable, or if the client is reading
  ** and has the read-uncommitted flag set, then no lock is required. 
  ** Return true immediately.



  */
  if( (pBtree->sharable==0)
   || (eLockType==READ_LOCK && (pBtree->db->flags & SQLITE_ReadUncommitted))

  ){
    return 1;
  }

  /* If the client is reading  or writing an index and the schema is
  ** not loaded, then it is too difficult to actually check to see if
  ** the correct locks are held.  So do not bother - just return true.
  ** This case does not come up very often anyhow.
  */
  if( isIndex && (!pSchema || (pSchema->flags&DB_SchemaLoaded)==0) ){
    return 1;
  }

  /* Figure out the root-page that the lock should be held on. For table
  ** b-trees, this is just the root page of the b-tree being read or
  ** written. For index b-trees, it is the root page of the associated
  ** table.  */
  if( isIndex ){
    HashElem *p;
37767
37768
37769
37770
37771
37772
37773

37774

37775
37776
37777







37778
37779

37780
37781

37782
37783
37784
37785
37786
37787
37788
37789
37790
37791
37792
37793
37794
37795
37796
37797
37798
37799
37800
37801
37802
37803
37804
37805
37806
37807
37808
37809
37810
37811
37812
37813
37814
37815
37816
37817
37818
37819
37820
37821
37822
37823
37824
37825
37826
37827
37828
      return 1;
    }
  }

  /* Failed to find the required lock. */
  return 0;
}



/*
** This function is also used as part of assert() statements only. It 
** returns true if there exist one or more cursors open on the table 







** with root page iRoot that do not belong to either connection pBtree 
** or some other connection that has the read-uncommitted flag set.

**
** For example, before writing to page iRoot:

**
**    assert( !hasReadConflicts(pBtree, iRoot) );
*/
static int hasReadConflicts(Btree *pBtree, Pgno iRoot){
  BtCursor *p;
  for(p=pBtree->pBt->pCursor; p; p=p->pNext){
    if( p->pgnoRoot==iRoot 
     && p->pBtree!=pBtree
     && 0==(p->pBtree->db->flags & SQLITE_ReadUncommitted)
    ){
      return 1;
    }
  }
  return 0;
}
#endif    /* #ifdef SQLITE_DEBUG */

/*
** Query to see if btree handle p may obtain a lock of type eLock 
** (READ_LOCK or WRITE_LOCK) on the table with root-page iTab. Return
** SQLITE_OK if the lock may be obtained (by calling
** setSharedCacheTableLock()), or SQLITE_LOCKED if not.
*/
static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
  BtShared *pBt = p->pBt;
  BtLock *pIter;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( eLock==READ_LOCK || eLock==WRITE_LOCK );
  assert( p->db!=0 );
  assert( !(p->db->flags&SQLITE_ReadUncommitted)||eLock==WRITE_LOCK||iTab==1 );
  
  /* If requesting a write-lock, then the Btree must have an open write
  ** transaction on this file. And, obviously, for this to be so there 
  ** must be an open write transaction on the file itself.
  */
  assert( eLock==READ_LOCK || (p==pBt->pWriter && p->inTrans==TRANS_WRITE) );
  assert( eLock==READ_LOCK || pBt->inTransaction==TRANS_WRITE );
  
  /* This is a no-op if the shared-cache is not enabled */
  if( !p->sharable ){
    return SQLITE_OK;
  }

  /* If some other connection is holding an exclusive lock, the
  ** requested lock may not be obtained.
  */







>

>

|
<
>
>
>
>
>
>
>
|
|
>

|
>


















|




















|







37799
37800
37801
37802
37803
37804
37805
37806
37807
37808
37809
37810

37811
37812
37813
37814
37815
37816
37817
37818
37819
37820
37821
37822
37823
37824
37825
37826
37827
37828
37829
37830
37831
37832
37833
37834
37835
37836
37837
37838
37839
37840
37841
37842
37843
37844
37845
37846
37847
37848
37849
37850
37851
37852
37853
37854
37855
37856
37857
37858
37859
37860
37861
37862
37863
37864
37865
37866
37867
37868
37869
37870
      return 1;
    }
  }

  /* Failed to find the required lock. */
  return 0;
}
#endif /* SQLITE_DEBUG */

#ifdef SQLITE_DEBUG
/*
**** This function may be used as part of assert() statements only. ****

**
** Return true if it would be illegal for pBtree to write into the
** table or index rooted at iRoot because other shared connections are
** simultaneously reading that same table or index.
**
** It is illegal for pBtree to write if some other Btree object that
** shares the same BtShared object is currently reading or writing
** the iRoot table.  Except, if the other Btree object has the
** read-uncommitted flag set, then it is OK for the other object to
** have a read cursor.
**
** For example, before writing to any part of the table or index
** rooted at page iRoot, one should call:
**
**    assert( !hasReadConflicts(pBtree, iRoot) );
*/
static int hasReadConflicts(Btree *pBtree, Pgno iRoot){
  BtCursor *p;
  for(p=pBtree->pBt->pCursor; p; p=p->pNext){
    if( p->pgnoRoot==iRoot 
     && p->pBtree!=pBtree
     && 0==(p->pBtree->db->flags & SQLITE_ReadUncommitted)
    ){
      return 1;
    }
  }
  return 0;
}
#endif    /* #ifdef SQLITE_DEBUG */

/*
** Query to see if Btree handle p may obtain a lock of type eLock 
** (READ_LOCK or WRITE_LOCK) on the table with root-page iTab. Return
** SQLITE_OK if the lock may be obtained (by calling
** setSharedCacheTableLock()), or SQLITE_LOCKED if not.
*/
static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){
  BtShared *pBt = p->pBt;
  BtLock *pIter;

  assert( sqlite3BtreeHoldsMutex(p) );
  assert( eLock==READ_LOCK || eLock==WRITE_LOCK );
  assert( p->db!=0 );
  assert( !(p->db->flags&SQLITE_ReadUncommitted)||eLock==WRITE_LOCK||iTab==1 );
  
  /* If requesting a write-lock, then the Btree must have an open write
  ** transaction on this file. And, obviously, for this to be so there 
  ** must be an open write transaction on the file itself.
  */
  assert( eLock==READ_LOCK || (p==pBt->pWriter && p->inTrans==TRANS_WRITE) );
  assert( eLock==READ_LOCK || pBt->inTransaction==TRANS_WRITE );
  
  /* This routine is a no-op if the shared-cache is not enabled */
  if( !p->sharable ){
    return SQLITE_OK;
  }

  /* If some other connection is holding an exclusive lock, the
  ** requested lock may not be obtained.
  */
37860
37861
37862
37863
37864
37865
37866
37867
37868
37869
37870
37871
37872
37873
37874
37875
37876
37877
/*
** Add a lock on the table with root-page iTable to the shared-btree used
** by Btree handle p. Parameter eLock must be either READ_LOCK or 
** WRITE_LOCK.
**
** This function assumes the following:
**
**   (a) The specified b-tree connection handle is connected to a sharable
**       b-tree database (one with the BtShared.sharable) flag set, and
**
**   (b) No other b-tree connection handle holds a lock that conflicts
**       with the requested lock (i.e. querySharedCacheTableLock() has
**       already been called and returned SQLITE_OK).
**
** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM 
** is returned if a malloc attempt fails.
*/
static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){







|
|

|







37902
37903
37904
37905
37906
37907
37908
37909
37910
37911
37912
37913
37914
37915
37916
37917
37918
37919
/*
** Add a lock on the table with root-page iTable to the shared-btree used
** by Btree handle p. Parameter eLock must be either READ_LOCK or 
** WRITE_LOCK.
**
** This function assumes the following:
**
**   (a) The specified Btree object p is connected to a sharable
**       database (one with the BtShared.sharable flag set), and
**
**   (b) No other Btree objects hold a lock that conflicts
**       with the requested lock (i.e. querySharedCacheTableLock() has
**       already been called and returned SQLITE_OK).
**
** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM 
** is returned if a malloc attempt fails.
*/
static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
37928
37929
37930
37931
37932
37933
37934
37935
37936
37937
37938
37939
37940
37941
37942
37943
37944
  return SQLITE_OK;
}
#endif /* !SQLITE_OMIT_SHARED_CACHE */

#ifndef SQLITE_OMIT_SHARED_CACHE
/*
** Release all the table locks (locks obtained via calls to
** the setSharedCacheTableLock() procedure) held by Btree handle p.
**
** This function assumes that handle p has an open read or write 
** transaction. If it does not, then the BtShared.isPending variable
** may be incorrectly cleared.
*/
static void clearAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  BtLock **ppIter = &pBt->pLock;








|

|







37970
37971
37972
37973
37974
37975
37976
37977
37978
37979
37980
37981
37982
37983
37984
37985
37986
  return SQLITE_OK;
}
#endif /* !SQLITE_OMIT_SHARED_CACHE */

#ifndef SQLITE_OMIT_SHARED_CACHE
/*
** Release all the table locks (locks obtained via calls to
** the setSharedCacheTableLock() procedure) held by Btree object p.
**
** This function assumes that Btree p has an open read or write 
** transaction. If it does not, then the BtShared.isPending variable
** may be incorrectly cleared.
*/
static void clearAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  BtLock **ppIter = &pBt->pLock;

37963
37964
37965
37966
37967
37968
37969
37970
37971
37972
37973
37974
37975
37976
37977
37978
37979
37980
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37982
37983
37984
37985
37986
37987
37988
37989
37990
37991
37992
37993
37994
37995
37996
37997
37998
37999
38000
38001
38002
38003
38004


38005
38006
38007
38008
38009
38010
38011
38012
38013
38014

  assert( pBt->isPending==0 || pBt->pWriter );
  if( pBt->pWriter==p ){
    pBt->pWriter = 0;
    pBt->isExclusive = 0;
    pBt->isPending = 0;
  }else if( pBt->nTransaction==2 ){
    /* This function is called when connection p is concluding its 
    ** transaction. If there currently exists a writer, and p is not
    ** that writer, then the number of locks held by connections other
    ** than the writer must be about to drop to zero. In this case
    ** set the isPending flag to 0.
    **
    ** If there is not currently a writer, then BtShared.isPending must
    ** be zero already. So this next line is harmless in that case.
    */
    pBt->isPending = 0;
  }
}

/*
** This function changes all write-locks held by connection p to read-locks.
*/
static void downgradeAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  if( pBt->pWriter==p ){
    BtLock *pLock;
    pBt->pWriter = 0;
    pBt->isExclusive = 0;
    pBt->isPending = 0;
    for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){
      assert( pLock->eLock==READ_LOCK || pLock->pBtree==p );
      pLock->eLock = READ_LOCK;
    }
  }
}

#endif /* SQLITE_OMIT_SHARED_CACHE */

static void releasePage(MemPage *pPage);  /* Forward reference */

/*


** Verify that the cursor holds a mutex on the BtShared
*/
#ifndef NDEBUG
static int cursorHoldsMutex(BtCursor *p){
  return sqlite3_mutex_held(p->pBt->mutex);
}
#endif


#ifndef SQLITE_OMIT_INCRBLOB







|













|




















>
>
|

|







38005
38006
38007
38008
38009
38010
38011
38012
38013
38014
38015
38016
38017
38018
38019
38020
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38022
38023
38024
38025
38026
38027
38028
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38033
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38050
38051
38052
38053
38054
38055
38056
38057
38058

  assert( pBt->isPending==0 || pBt->pWriter );
  if( pBt->pWriter==p ){
    pBt->pWriter = 0;
    pBt->isExclusive = 0;
    pBt->isPending = 0;
  }else if( pBt->nTransaction==2 ){
    /* This function is called when Btree p is concluding its 
    ** transaction. If there currently exists a writer, and p is not
    ** that writer, then the number of locks held by connections other
    ** than the writer must be about to drop to zero. In this case
    ** set the isPending flag to 0.
    **
    ** If there is not currently a writer, then BtShared.isPending must
    ** be zero already. So this next line is harmless in that case.
    */
    pBt->isPending = 0;
  }
}

/*
** This function changes all write-locks held by Btree p into read-locks.
*/
static void downgradeAllSharedCacheTableLocks(Btree *p){
  BtShared *pBt = p->pBt;
  if( pBt->pWriter==p ){
    BtLock *pLock;
    pBt->pWriter = 0;
    pBt->isExclusive = 0;
    pBt->isPending = 0;
    for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){
      assert( pLock->eLock==READ_LOCK || pLock->pBtree==p );
      pLock->eLock = READ_LOCK;
    }
  }
}

#endif /* SQLITE_OMIT_SHARED_CACHE */

static void releasePage(MemPage *pPage);  /* Forward reference */

/*
***** This routine is used inside of assert() only ****
**
** Verify that the cursor holds the mutex on its BtShared
*/
#ifdef SQLITE_DEBUG
static int cursorHoldsMutex(BtCursor *p){
  return sqlite3_mutex_held(p->pBt->mutex);
}
#endif


#ifndef SQLITE_OMIT_INCRBLOB
38031
38032
38033
38034
38035
38036
38037
38038
38039
38040
38041
38042
38043
38044
38045
38046
38047
38048
38049
38050
38051
38052
38053
38054
38055
38056
38057
38058
38059
38060
38061
38062
38063
38064

38065
38066
38067
38068
38069
38070
38071
38072
38073
38074
38075
  for(p=pBt->pCursor; p; p=p->pNext){
    invalidateOverflowCache(p);
  }
}

/*
** This function is called before modifying the contents of a table
** b-tree to invalidate any incrblob cursors that are open on the
** row or one of the rows being modified.
**
** If argument isClearTable is true, then the entire contents of the
** table is about to be deleted. In this case invalidate all incrblob
** cursors open on any row within the table with root-page pgnoRoot.
**
** Otherwise, if argument isClearTable is false, then the row with
** rowid iRow is being replaced or deleted. In this case invalidate
** only those incrblob cursors open on this specific row.
*/
static void invalidateIncrblobCursors(
  Btree *pBtree,          /* The database file to check */
  i64 iRow,               /* The rowid that might be changing */
  int isClearTable        /* True if all rows are being deleted */
){
  BtCursor *p;
  BtShared *pBt = pBtree->pBt;
  assert( sqlite3BtreeHoldsMutex(pBtree) );
  for(p=pBt->pCursor; p; p=p->pNext){
    if( p->isIncrblobHandle && (isClearTable || p->info.nKey==iRow) ){
      p->eState = CURSOR_INVALID;
    }
  }
}

#else

  #define invalidateOverflowCache(x)
  #define invalidateAllOverflowCache(x)
  #define invalidateIncrblobCursors(x,y,z)
#endif

/*
** Set bit pgno of the BtShared.pHasContent bitvec. This is called 
** when a page that previously contained data becomes a free-list leaf 
** page.
**
** The BtShared.pHasContent bitvec exists to work around an obscure







|








|

















>



|







38075
38076
38077
38078
38079
38080
38081
38082
38083
38084
38085
38086
38087
38088
38089
38090
38091
38092
38093
38094
38095
38096
38097
38098
38099
38100
38101
38102
38103
38104
38105
38106
38107
38108
38109
38110
38111
38112
38113
38114
38115
38116
38117
38118
38119
38120
  for(p=pBt->pCursor; p; p=p->pNext){
    invalidateOverflowCache(p);
  }
}

/*
** This function is called before modifying the contents of a table
** to invalidate any incrblob cursors that are open on the
** row or one of the rows being modified.
**
** If argument isClearTable is true, then the entire contents of the
** table is about to be deleted. In this case invalidate all incrblob
** cursors open on any row within the table with root-page pgnoRoot.
**
** Otherwise, if argument isClearTable is false, then the row with
** rowid iRow is being replaced or deleted. In this case invalidate
** only those incrblob cursors open on that specific row.
*/
static void invalidateIncrblobCursors(
  Btree *pBtree,          /* The database file to check */
  i64 iRow,               /* The rowid that might be changing */
  int isClearTable        /* True if all rows are being deleted */
){
  BtCursor *p;
  BtShared *pBt = pBtree->pBt;
  assert( sqlite3BtreeHoldsMutex(pBtree) );
  for(p=pBt->pCursor; p; p=p->pNext){
    if( p->isIncrblobHandle && (isClearTable || p->info.nKey==iRow) ){
      p->eState = CURSOR_INVALID;
    }
  }
}

#else
  /* Stub functions when INCRBLOB is omitted */
  #define invalidateOverflowCache(x)
  #define invalidateAllOverflowCache(x)
  #define invalidateIncrblobCursors(x,y,z)
#endif /* SQLITE_OMIT_INCRBLOB */

/*
** Set bit pgno of the BtShared.pHasContent bitvec. This is called 
** when a page that previously contained data becomes a free-list leaf 
** page.
**
** The BtShared.pHasContent bitvec exists to work around an obscure
38094
38095
38096
38097
38098
38099
38100
38101
38102
38103
38104
38105
38106
38107
38108
** is extracted from the free-list and reused, then the original data
** may be lost. In the event of a rollback, it may not be possible
** to restore the database to its original configuration.
**
** The solution is the BtShared.pHasContent bitvec. Whenever a page is 
** moved to become a free-list leaf page, the corresponding bit is
** set in the bitvec. Whenever a leaf page is extracted from the free-list,
** optimization 2 above is ommitted if the corresponding bit is already
** set in BtShared.pHasContent. The contents of the bitvec are cleared
** at the end of every transaction.
*/
static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
  int rc = SQLITE_OK;
  if( !pBt->pHasContent ){
    int nPage = 100;







|







38139
38140
38141
38142
38143
38144
38145
38146
38147
38148
38149
38150
38151
38152
38153
** is extracted from the free-list and reused, then the original data
** may be lost. In the event of a rollback, it may not be possible
** to restore the database to its original configuration.
**
** The solution is the BtShared.pHasContent bitvec. Whenever a page is 
** moved to become a free-list leaf page, the corresponding bit is
** set in the bitvec. Whenever a leaf page is extracted from the free-list,
** optimization 2 above is omitted if the corresponding bit is already
** set in BtShared.pHasContent. The contents of the bitvec are cleared
** at the end of every transaction.
*/
static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
  int rc = SQLITE_OK;
  if( !pBt->pHasContent ){
    int nPage = 100;
38190
38191
38192
38193
38194
38195
38196
38197
38198
38199
38200
38201
38202
38203
38204
38205
  }

  invalidateOverflowCache(pCur);
  return rc;
}

/*
** Save the positions of all cursors except pExcept open on the table 
** with root-page iRoot. Usually, this is called just before cursor
** pExcept is used to modify the table (BtreeDelete() or BtreeInsert()).
*/
static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){
  BtCursor *p;
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pExcept==0 || pExcept->pBt==pBt );
  for(p=pBt->pCursor; p; p=p->pNext){







|
|







38235
38236
38237
38238
38239
38240
38241
38242
38243
38244
38245
38246
38247
38248
38249
38250
  }

  invalidateOverflowCache(pCur);
  return rc;
}

/*
** Save the positions of all cursors (except pExcept) that are open on
** the table  with root-page iRoot. Usually, this is called just before cursor
** pExcept is used to modify the table (BtreeDelete() or BtreeInsert()).
*/
static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){
  BtCursor *p;
  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( pExcept==0 || pExcept->pBt==pBt );
  for(p=pBt->pCursor; p; p=p->pNext){
38596
38597
38598
38599
38600
38601
38602
38603



38604
38605
38606
38607
38608
38609
38610
  if( nSize<4 ){
    nSize = 4;
  }

  assert( nSize==debuginfo.nSize );
  return (u16)nSize;
}
#ifndef NDEBUG



static u16 cellSize(MemPage *pPage, int iCell){
  return cellSizePtr(pPage, findCell(pPage, iCell));
}
#endif

#ifndef SQLITE_OMIT_AUTOVACUUM
/*







|
>
>
>







38641
38642
38643
38644
38645
38646
38647
38648
38649
38650
38651
38652
38653
38654
38655
38656
38657
38658
  if( nSize<4 ){
    nSize = 4;
  }

  assert( nSize==debuginfo.nSize );
  return (u16)nSize;
}

#ifdef SQLITE_DEBUG
/* This variation on cellSizePtr() is used inside of assert() statements
** only. */
static u16 cellSize(MemPage *pPage, int iCell){
  return cellSizePtr(pPage, findCell(pPage, iCell));
}
#endif

#ifndef SQLITE_OMIT_AUTOVACUUM
/*
40568
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40570
40571
40572
40573
40574
40575
40576
40577
40578
40579
40580
40581
40582
40583
40584
40585
40586



40587
40588
40589
40590
40591
40592
40593

/*
** This function is called from both BtreeCommitPhaseTwo() and BtreeRollback()
** at the conclusion of a transaction.
*/
static void btreeEndTransaction(Btree *p){
  BtShared *pBt = p->pBt;
  BtCursor *pCsr;
  assert( sqlite3BtreeHoldsMutex(p) );

  /* Search for a cursor held open by this b-tree connection. If one exists,
  ** then the transaction will be downgraded to a read-only transaction
  ** instead of actually concluded. A subsequent call to CommitPhaseTwo() 
  ** or Rollback() will finish the transaction and unlock the database.  */
  for(pCsr=pBt->pCursor; pCsr && pCsr->pBtree!=p; pCsr=pCsr->pNext);
  assert( pCsr==0 || p->inTrans>TRANS_NONE );

  btreeClearHasContent(pBt);
  if( pCsr ){



    downgradeAllSharedCacheTableLocks(p);
    p->inTrans = TRANS_READ;
  }else{
    /* If the handle had any kind of transaction open, decrement the 
    ** transaction count of the shared btree. If the transaction count 
    ** reaches 0, set the shared state to TRANS_NONE. The unlockBtreeIfUnused()
    ** call below will unlock the pager.  */







<


<
<
<
<
<
<
<

|
>
>
>







40616
40617
40618
40619
40620
40621
40622

40623
40624







40625
40626
40627
40628
40629
40630
40631
40632
40633
40634
40635
40636

/*
** This function is called from both BtreeCommitPhaseTwo() and BtreeRollback()
** at the conclusion of a transaction.
*/
static void btreeEndTransaction(Btree *p){
  BtShared *pBt = p->pBt;

  assert( sqlite3BtreeHoldsMutex(p) );








  btreeClearHasContent(pBt);
  if( p->inTrans>TRANS_NONE && p->db->activeVdbeCnt>1 ){
    /* If there are other active statements that belong to this database
    ** handle, downgrade to a read-only transaction. The other statements
    ** may still be reading from the database.  */
    downgradeAllSharedCacheTableLocks(p);
    p->inTrans = TRANS_READ;
  }else{
    /* If the handle had any kind of transaction open, decrement the 
    ** transaction count of the shared btree. If the transaction count 
    ** reaches 0, set the shared state to TRANS_NONE. The unlockBtreeIfUnused()
    ** call below will unlock the pager.  */
44039
44040
44041
44042
44043
44044
44045
44046
44047
44048
44049
44050
44051
44052
44053
  const void *pData, int nData,  /* The data of the new record */
  int nZero,                     /* Number of extra 0 bytes to append to data */
  int appendBias,                /* True if this is likely an append */
  int seekResult                 /* Result of prior MovetoUnpacked() call */
){
  int rc;
  int loc = seekResult;          /* -1: before desired location  +1: after */
  int szNew;
  int idx;
  MemPage *pPage;
  Btree *p = pCur->pBtree;
  BtShared *pBt = p->pBt;
  unsigned char *oldCell;
  unsigned char *newCell = 0;








|







44082
44083
44084
44085
44086
44087
44088
44089
44090
44091
44092
44093
44094
44095
44096
  const void *pData, int nData,  /* The data of the new record */
  int nZero,                     /* Number of extra 0 bytes to append to data */
  int appendBias,                /* True if this is likely an append */
  int seekResult                 /* Result of prior MovetoUnpacked() call */
){
  int rc;
  int loc = seekResult;          /* -1: before desired location  +1: after */
  int szNew = 0;
  int idx;
  MemPage *pPage;
  Btree *p = pCur->pBtree;
  BtShared *pBt = p->pBt;
  unsigned char *oldCell;
  unsigned char *newCell = 0;

47095
47096
47097
47098
47099
47100
47101



47102
47103
47104
47105
47106
47107
47108
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif




  *ppVal = pVal;
  return SQLITE_OK;

no_mem:
  db->mallocFailed = 1;
  sqlite3DbFree(db, zVal);
  sqlite3ValueFree(pVal);







>
>
>







47138
47139
47140
47141
47142
47143
47144
47145
47146
47147
47148
47149
47150
47151
47152
47153
47154
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif

  if( pVal ){
    sqlite3VdbeMemStoreType(pVal);
  }
  *ppVal = pVal;
  return SQLITE_OK;

no_mem:
  db->mallocFailed = 1;
  sqlite3DbFree(db, zVal);
  sqlite3ValueFree(pVal);
47199
47200
47201
47202
47203
47204
47205

47206
47207
47208
47209
47210
47211
47212
47213
47214
47215
47216
47217
47218
47219
  return p;
}

/*
** Remember the SQL string for a prepared statement.
*/
SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe *p, const char *z, int n, int isPrepareV2){

  if( p==0 ) return;
#ifdef SQLITE_OMIT_TRACE
  if( !isPrepareV2 ) return;
#endif
  assert( p->zSql==0 );
  p->zSql = sqlite3DbStrNDup(p->db, z, n);
  p->isPrepareV2 = isPrepareV2 ? 1 : 0;
}

/*
** Return the SQL associated with a prepared statement
*/
SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt){
  Vdbe *p = (Vdbe *)pStmt;







>






|







47245
47246
47247
47248
47249
47250
47251
47252
47253
47254
47255
47256
47257
47258
47259
47260
47261
47262
47263
47264
47265
47266
  return p;
}

/*
** Remember the SQL string for a prepared statement.
*/
SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe *p, const char *z, int n, int isPrepareV2){
  assert( isPrepareV2==1 || isPrepareV2==0 );
  if( p==0 ) return;
#ifdef SQLITE_OMIT_TRACE
  if( !isPrepareV2 ) return;
#endif
  assert( p->zSql==0 );
  p->zSql = sqlite3DbStrNDup(p->db, z, n);
  p->isPrepareV2 = isPrepareV2;
}

/*
** Return the SQL associated with a prepared statement
*/
SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt){
  Vdbe *p = (Vdbe *)pStmt;
48159
48160
48161
48162
48163
48164
48165
48166
48167
48168
48169
48170
48171
48172
48173
48174
48175
48176
48177
48178
48179
48180
48181
48182
48183
48184
48185
48186
48187
48188
48189
48190
48191
48192
48193
  for(i=0; i<p->nChildCsr; i++){
    sqlite3VdbeFreeCursor(p->v, apCsr[i]);
  }
  releaseMemArray(aMem, p->nChildMem);
  sqlite3DbFree(p->v->db, p);
}


#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
SQLITE_PRIVATE int sqlite3VdbeReleaseBuffers(Vdbe *p){
  int ii;
  int nFree = 0;
  assert( sqlite3_mutex_held(p->db->mutex) );
  for(ii=1; ii<=p->nMem; ii++){
    Mem *pMem = &p->aMem[ii];
    if( pMem->flags & MEM_RowSet ){
      sqlite3RowSetClear(pMem->u.pRowSet);
    }
    if( pMem->z && pMem->flags&MEM_Dyn ){
      assert( !pMem->xDel );
      nFree += sqlite3DbMallocSize(pMem->db, pMem->z);
      sqlite3VdbeMemRelease(pMem);
    }
  }
  return nFree;
}
#endif

#ifndef SQLITE_OMIT_EXPLAIN
/*
** Give a listing of the program in the virtual machine.
**
** The interface is the same as sqlite3VdbeExec().  But instead of
** running the code, it invokes the callback once for each instruction.
** This feature is used to implement "EXPLAIN".







<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<







48206
48207
48208
48209
48210
48211
48212





















48213
48214
48215
48216
48217
48218
48219
  for(i=0; i<p->nChildCsr; i++){
    sqlite3VdbeFreeCursor(p->v, apCsr[i]);
  }
  releaseMemArray(aMem, p->nChildMem);
  sqlite3DbFree(p->v->db, p);
}






















#ifndef SQLITE_OMIT_EXPLAIN
/*
** Give a listing of the program in the virtual machine.
**
** The interface is the same as sqlite3VdbeExec().  But instead of
** running the code, it invokes the callback once for each instruction.
** This feature is used to implement "EXPLAIN".
50168
50169
50170
50171
50172
50173
50174







































50175
50176
50177
50178
50179
50180
50181

/*
** Return the database associated with the Vdbe.
*/
SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe *v){
  return v->db;
}








































/************** End of vdbeaux.c *********************************************/
/************** Begin file vdbeapi.c *****************************************/
/*
** 2004 May 26
**
** The author disclaims copyright to this source code.  In place of







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







50194
50195
50196
50197
50198
50199
50200
50201
50202
50203
50204
50205
50206
50207
50208
50209
50210
50211
50212
50213
50214
50215
50216
50217
50218
50219
50220
50221
50222
50223
50224
50225
50226
50227
50228
50229
50230
50231
50232
50233
50234
50235
50236
50237
50238
50239
50240
50241
50242
50243
50244
50245
50246

/*
** Return the database associated with the Vdbe.
*/
SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe *v){
  return v->db;
}

/*
** Return a pointer to an sqlite3_value structure containing the value bound
** parameter iVar of VM v. Except, if the value is an SQL NULL, return 
** 0 instead. Unless it is NULL, apply affinity aff (one of the SQLITE_AFF_*
** constants) to the value before returning it.
**
** The returned value must be freed by the caller using sqlite3ValueFree().
*/
SQLITE_PRIVATE sqlite3_value *sqlite3VdbeGetValue(Vdbe *v, int iVar, u8 aff){
  assert( iVar>0 );
  if( v ){
    Mem *pMem = &v->aVar[iVar-1];
    if( 0==(pMem->flags & MEM_Null) ){
      sqlite3_value *pRet = sqlite3ValueNew(v->db);
      if( pRet ){
        sqlite3VdbeMemCopy((Mem *)pRet, pMem);
        sqlite3ValueApplyAffinity(pRet, aff, SQLITE_UTF8);
        sqlite3VdbeMemStoreType((Mem *)pRet);
      }
      return pRet;
    }
  }
  return 0;
}

/*
** Configure SQL variable iVar so that binding a new value to it signals
** to sqlite3_reoptimize() that re-preparing the statement may result
** in a better query plan.
*/
SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe *v, int iVar){
  assert( iVar>0 );
  if( iVar>32 ){
    v->expmask = 0xffffffff;
  }else{
    v->expmask |= ((u32)1 << (iVar-1));
  }
}

/************** End of vdbeaux.c *********************************************/
/************** Begin file vdbeapi.c *****************************************/
/*
** 2004 May 26
**
** The author disclaims copyright to this source code.  In place of
50269
50270
50271
50272
50273
50274
50275



50276
50277
50278
50279
50280
50281
50282
#if SQLITE_THREADSAFE
  sqlite3_mutex *mutex = ((Vdbe*)pStmt)->db->mutex;
#endif
  sqlite3_mutex_enter(mutex);
  for(i=0; i<p->nVar; i++){
    sqlite3VdbeMemRelease(&p->aVar[i]);
    p->aVar[i].flags = MEM_Null;



  }
  sqlite3_mutex_leave(mutex);
  return rc;
}


/**************************** sqlite3_value_  *******************************







>
>
>







50334
50335
50336
50337
50338
50339
50340
50341
50342
50343
50344
50345
50346
50347
50348
50349
50350
#if SQLITE_THREADSAFE
  sqlite3_mutex *mutex = ((Vdbe*)pStmt)->db->mutex;
#endif
  sqlite3_mutex_enter(mutex);
  for(i=0; i<p->nVar; i++){
    sqlite3VdbeMemRelease(&p->aVar[i]);
    p->aVar[i].flags = MEM_Null;
  }
  if( p->isPrepareV2 && p->expmask ){
    p->expired = 1;
  }
  sqlite3_mutex_leave(mutex);
  return rc;
}


/**************************** sqlite3_value_  *******************************
50475
50476
50477
50478
50479
50480
50481
50482
50483
50484
50485
50486
50487
50488
50489
  /* Assert that malloc() has not failed */
  db = p->db;
  if( db->mallocFailed ){
    return SQLITE_NOMEM;
  }

  if( p->pc<=0 && p->expired ){
    if( ALWAYS(p->rc==SQLITE_OK) ){
      p->rc = SQLITE_SCHEMA;
    }
    rc = SQLITE_ERROR;
    goto end_of_step;
  }
  if( sqlite3SafetyOn(db) ){
    p->rc = SQLITE_MISUSE;







|







50543
50544
50545
50546
50547
50548
50549
50550
50551
50552
50553
50554
50555
50556
50557
  /* Assert that malloc() has not failed */
  db = p->db;
  if( db->mallocFailed ){
    return SQLITE_NOMEM;
  }

  if( p->pc<=0 && p->expired ){
    if( ALWAYS(p->rc==SQLITE_OK || p->rc==SQLITE_SCHEMA) ){
      p->rc = SQLITE_SCHEMA;
    }
    rc = SQLITE_ERROR;
    goto end_of_step;
  }
  if( sqlite3SafetyOn(db) ){
    p->rc = SQLITE_MISUSE;
51085
51086
51087
51088
51089
51090
51091









51092
51093
51094
51095
51096
51097
51098
    return SQLITE_RANGE;
  }
  i--;
  pVar = &p->aVar[i];
  sqlite3VdbeMemRelease(pVar);
  pVar->flags = MEM_Null;
  sqlite3Error(p->db, SQLITE_OK, 0);









  return SQLITE_OK;
}

/*
** Bind a text or BLOB value.
*/
static int bindText(







>
>
>
>
>
>
>
>
>







51153
51154
51155
51156
51157
51158
51159
51160
51161
51162
51163
51164
51165
51166
51167
51168
51169
51170
51171
51172
51173
51174
51175
    return SQLITE_RANGE;
  }
  i--;
  pVar = &p->aVar[i];
  sqlite3VdbeMemRelease(pVar);
  pVar->flags = MEM_Null;
  sqlite3Error(p->db, SQLITE_OK, 0);

  /* If the bit corresponding to this variable in Vdbe.expmask is set, then 
  ** binding a new value to this variable invalidates the current query plan.
  */
  if( p->isPrepareV2 &&
     ((i<32 && p->expmask & ((u32)1 << i)) || p->expmask==0xffffffff)
  ){
    p->expired = 1;
  }
  return SQLITE_OK;
}

/*
** Bind a text or BLOB value.
*/
static int bindText(
51334
51335
51336
51337
51338
51339
51340






51341
51342
51343
51344
51345
51346
51347
** SQLITE_OK is returned.
*/
SQLITE_API int sqlite3_transfer_bindings(sqlite3_stmt *pFromStmt, sqlite3_stmt *pToStmt){
  Vdbe *pFrom = (Vdbe*)pFromStmt;
  Vdbe *pTo = (Vdbe*)pToStmt;
  if( pFrom->nVar!=pTo->nVar ){
    return SQLITE_ERROR;






  }
  return sqlite3TransferBindings(pFromStmt, pToStmt);
}
#endif

/*
** Return the sqlite3* database handle to which the prepared statement given







>
>
>
>
>
>







51411
51412
51413
51414
51415
51416
51417
51418
51419
51420
51421
51422
51423
51424
51425
51426
51427
51428
51429
51430
** SQLITE_OK is returned.
*/
SQLITE_API int sqlite3_transfer_bindings(sqlite3_stmt *pFromStmt, sqlite3_stmt *pToStmt){
  Vdbe *pFrom = (Vdbe*)pFromStmt;
  Vdbe *pTo = (Vdbe*)pToStmt;
  if( pFrom->nVar!=pTo->nVar ){
    return SQLITE_ERROR;
  }
  if( pTo->isPrepareV2 && pTo->expmask ){
    pTo->expired = 1;
  }
  if( pFrom->isPrepareV2 && pFrom->expmask ){
    pFrom->expired = 1;
  }
  return sqlite3TransferBindings(pFromStmt, pToStmt);
}
#endif

/*
** Return the sqlite3* database handle to which the prepared statement given
51530
51531
51532
51533
51534
51535
51536
51537
51538
51539
51540
51541
51542
51543
51544
51545
51546
51547
51548
51549
** P if required.
*/
#define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)

/*
** Argument pMem points at a register that will be passed to a
** user-defined function or returned to the user as the result of a query.
** The second argument, 'db_enc' is the text encoding used by the vdbe for
** register variables.  This routine sets the pMem->enc and pMem->type
** variables used by the sqlite3_value_*() routines.
*/
#define storeTypeInfo(A,B) _storeTypeInfo(A)
static void _storeTypeInfo(Mem *pMem){
  int flags = pMem->flags;
  if( flags & MEM_Null ){
    pMem->type = SQLITE_NULL;
  }
  else if( flags & MEM_Int ){
    pMem->type = SQLITE_INTEGER;
  }







<
|
|

<
|







51613
51614
51615
51616
51617
51618
51619

51620
51621
51622

51623
51624
51625
51626
51627
51628
51629
51630
** P if required.
*/
#define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0)

/*
** Argument pMem points at a register that will be passed to a
** user-defined function or returned to the user as the result of a query.

** This routine sets the pMem->type variable used by the sqlite3_value_*() 
** routines.
*/

SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem){
  int flags = pMem->flags;
  if( flags & MEM_Null ){
    pMem->type = SQLITE_NULL;
  }
  else if( flags & MEM_Int ){
    pMem->type = SQLITE_INTEGER;
  }
51706
51707
51708
51709
51710
51711
51712
51713
51714
51715
51716
51717
51718
51719
51720
** loss of information and return the revised type of the argument.
**
** This is an EXPERIMENTAL api and is subject to change or removal.
*/
SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){
  Mem *pMem = (Mem*)pVal;
  applyNumericAffinity(pMem);
  storeTypeInfo(pMem, 0);
  return pMem->type;
}

/*
** Exported version of applyAffinity(). This one works on sqlite3_value*, 
** not the internal Mem* type.
*/







|







51787
51788
51789
51790
51791
51792
51793
51794
51795
51796
51797
51798
51799
51800
51801
** loss of information and return the revised type of the argument.
**
** This is an EXPERIMENTAL api and is subject to change or removal.
*/
SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){
  Mem *pMem = (Mem*)pVal;
  applyNumericAffinity(pMem);
  sqlite3VdbeMemStoreType(pMem);
  return pMem->type;
}

/*
** Exported version of applyAffinity(). This one works on sqlite3_value*, 
** not the internal Mem* type.
*/
52255
52256
52257
52258
52259
52260
52261
52262
52263
52264
52265
52266
52267
52268
52269
      i64 v;                 /* The new rowid */
      VdbeCursor *pC;        /* Cursor of table to get the new rowid */
      int res;               /* Result of an sqlite3BtreeLast() */
      int cnt;               /* Counter to limit the number of searches */
      Mem *pMem;             /* Register holding largest rowid for AUTOINCREMENT */
      VdbeFrame *pFrame;     /* Root frame of VDBE */
    } be;
    struct OP_Insert_stack_vars {
      Mem *pData;       /* MEM cell holding data for the record to be inserted */
      Mem *pKey;        /* MEM cell holding key  for the record */
      i64 iKey;         /* The integer ROWID or key for the record to be inserted */
      VdbeCursor *pC;   /* Cursor to table into which insert is written */
      int nZero;        /* Number of zero-bytes to append */
      int seekResult;   /* Result of prior seek or 0 if no USESEEKRESULT flag */
      const char *zDb;  /* database name - used by the update hook */







|







52336
52337
52338
52339
52340
52341
52342
52343
52344
52345
52346
52347
52348
52349
52350
      i64 v;                 /* The new rowid */
      VdbeCursor *pC;        /* Cursor of table to get the new rowid */
      int res;               /* Result of an sqlite3BtreeLast() */
      int cnt;               /* Counter to limit the number of searches */
      Mem *pMem;             /* Register holding largest rowid for AUTOINCREMENT */
      VdbeFrame *pFrame;     /* Root frame of VDBE */
    } be;
    struct OP_InsertInt_stack_vars {
      Mem *pData;       /* MEM cell holding data for the record to be inserted */
      Mem *pKey;        /* MEM cell holding key  for the record */
      i64 iKey;         /* The integer ROWID or key for the record to be inserted */
      VdbeCursor *pC;   /* Cursor to table into which insert is written */
      int nZero;        /* Number of zero-bytes to append */
      int seekResult;   /* Result of prior seek or 0 if no USESEEKRESULT flag */
      const char *zDb;  /* database name - used by the update hook */
52899
52900
52901
52902
52903
52904
52905
52906
52907
52908
52909
52910
52911
52912
52913
#endif /* local variables moved into u.ab */

  u.ab.p1 = pOp->p1 - 1;
  u.ab.p2 = pOp->p2;
  u.ab.n = pOp->p3;
  assert( u.ab.p1>=0 && u.ab.p1+u.ab.n<=p->nVar );
  assert( u.ab.p2>=1 && u.ab.p2+u.ab.n-1<=p->nMem );
  assert( pOp->p4.z==0 || pOp->p3==1 );

  while( u.ab.n-- > 0 ){
    u.ab.pVar = &p->aVar[u.ab.p1++];
    if( sqlite3VdbeMemTooBig(u.ab.pVar) ){
      goto too_big;
    }
    pOut = &p->aMem[u.ab.p2++];







|







52980
52981
52982
52983
52984
52985
52986
52987
52988
52989
52990
52991
52992
52993
52994
#endif /* local variables moved into u.ab */

  u.ab.p1 = pOp->p1 - 1;
  u.ab.p2 = pOp->p2;
  u.ab.n = pOp->p3;
  assert( u.ab.p1>=0 && u.ab.p1+u.ab.n<=p->nVar );
  assert( u.ab.p2>=1 && u.ab.p2+u.ab.n-1<=p->nMem );
  assert( pOp->p4.z==0 || pOp->p3==1 || pOp->p3==0 );

  while( u.ab.n-- > 0 ){
    u.ab.pVar = &p->aVar[u.ab.p1++];
    if( sqlite3VdbeMemTooBig(u.ab.pVar) ){
      goto too_big;
    }
    pOut = &p->aMem[u.ab.p2++];
53050
53051
53052
53053
53054
53055
53056
53057
53058
53059
53060
53061
53062
53063
53064
  /* Make sure the results of the current row are \000 terminated
  ** and have an assigned type.  The results are de-ephemeralized as
  ** as side effect.
  */
  u.ad.pMem = p->pResultSet = &p->aMem[pOp->p1];
  for(u.ad.i=0; u.ad.i<pOp->p2; u.ad.i++){
    sqlite3VdbeMemNulTerminate(&u.ad.pMem[u.ad.i]);
    storeTypeInfo(&u.ad.pMem[u.ad.i], encoding);
    REGISTER_TRACE(pOp->p1+u.ad.i, &u.ad.pMem[u.ad.i]);
  }
  if( db->mallocFailed ) goto no_mem;

  /* Return SQLITE_ROW
  */
  p->pc = pc + 1;







|







53131
53132
53133
53134
53135
53136
53137
53138
53139
53140
53141
53142
53143
53144
53145
  /* Make sure the results of the current row are \000 terminated
  ** and have an assigned type.  The results are de-ephemeralized as
  ** as side effect.
  */
  u.ad.pMem = p->pResultSet = &p->aMem[pOp->p1];
  for(u.ad.i=0; u.ad.i<pOp->p2; u.ad.i++){
    sqlite3VdbeMemNulTerminate(&u.ad.pMem[u.ad.i]);
    sqlite3VdbeMemStoreType(&u.ad.pMem[u.ad.i]);
    REGISTER_TRACE(pOp->p1+u.ad.i, &u.ad.pMem[u.ad.i]);
  }
  if( db->mallocFailed ) goto no_mem;

  /* Return SQLITE_ROW
  */
  p->pc = pc + 1;
53275
53276
53277
53278
53279
53280
53281
53282
53283
53284
53285
53286
53287
53288
53289
  assert( u.ag.apVal || u.ag.n==0 );

  assert( u.ag.n==0 || (pOp->p2>0 && pOp->p2+u.ag.n<=p->nMem+1) );
  assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ag.n );
  u.ag.pArg = &p->aMem[pOp->p2];
  for(u.ag.i=0; u.ag.i<u.ag.n; u.ag.i++, u.ag.pArg++){
    u.ag.apVal[u.ag.i] = u.ag.pArg;
    storeTypeInfo(u.ag.pArg, encoding);
    REGISTER_TRACE(pOp->p2, u.ag.pArg);
  }

  assert( pOp->p4type==P4_FUNCDEF || pOp->p4type==P4_VDBEFUNC );
  if( pOp->p4type==P4_FUNCDEF ){
    u.ag.ctx.pFunc = pOp->p4.pFunc;
    u.ag.ctx.pVdbeFunc = 0;







|







53356
53357
53358
53359
53360
53361
53362
53363
53364
53365
53366
53367
53368
53369
53370
  assert( u.ag.apVal || u.ag.n==0 );

  assert( u.ag.n==0 || (pOp->p2>0 && pOp->p2+u.ag.n<=p->nMem+1) );
  assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+u.ag.n );
  u.ag.pArg = &p->aMem[pOp->p2];
  for(u.ag.i=0; u.ag.i<u.ag.n; u.ag.i++, u.ag.pArg++){
    u.ag.apVal[u.ag.i] = u.ag.pArg;
    sqlite3VdbeMemStoreType(u.ag.pArg);
    REGISTER_TRACE(pOp->p2, u.ag.pArg);
  }

  assert( pOp->p4type==P4_FUNCDEF || pOp->p4type==P4_VDBEFUNC );
  if( pOp->p4type==P4_FUNCDEF ){
    u.ag.ctx.pFunc = pOp->p4.pFunc;
    u.ag.ctx.pVdbeFunc = 0;
54771
54772
54773
54774
54775
54776
54777

54778
54779
54780
54781
54782
54783
54784
    /* Record changes in the file format */
    u.au.pDb->pSchema->file_format = (u8)pIn3->u.i;
  }
  if( pOp->p1==1 ){
    /* Invalidate all prepared statements whenever the TEMP database
    ** schema is changed.  Ticket #1644 */
    sqlite3ExpirePreparedStatements(db);

  }
  break;
}

/* Opcode: VerifyCookie P1 P2 *
**
** Check the value of global database parameter number 0 (the







>







54852
54853
54854
54855
54856
54857
54858
54859
54860
54861
54862
54863
54864
54865
54866
    /* Record changes in the file format */
    u.au.pDb->pSchema->file_format = (u8)pIn3->u.i;
  }
  if( pOp->p1==1 ){
    /* Invalidate all prepared statements whenever the TEMP database
    ** schema is changed.  Ticket #1644 */
    sqlite3ExpirePreparedStatements(db);
    p->expired = 0;
  }
  break;
}

/* Opcode: VerifyCookie P1 P2 *
**
** Check the value of global database parameter number 0 (the
54891
54892
54893
54894
54895
54896
54897





54898
54899
54900
54901
54902
54903
54904
  int p2;
  int iDb;
  int wrFlag;
  Btree *pX;
  VdbeCursor *pCur;
  Db *pDb;
#endif /* local variables moved into u.aw */






  u.aw.nField = 0;
  u.aw.pKeyInfo = 0;
  u.aw.p2 = pOp->p2;
  u.aw.iDb = pOp->p3;
  assert( u.aw.iDb>=0 && u.aw.iDb<db->nDb );
  assert( (p->btreeMask & (1<<u.aw.iDb))!=0 );







>
>
>
>
>







54973
54974
54975
54976
54977
54978
54979
54980
54981
54982
54983
54984
54985
54986
54987
54988
54989
54990
54991
  int p2;
  int iDb;
  int wrFlag;
  Btree *pX;
  VdbeCursor *pCur;
  Db *pDb;
#endif /* local variables moved into u.aw */

  if( p->expired ){
    rc = SQLITE_ABORT;
    break;
  }

  u.aw.nField = 0;
  u.aw.pKeyInfo = 0;
  u.aw.p2 = pOp->p2;
  u.aw.iDb = pOp->p3;
  assert( u.aw.iDb>=0 && u.aw.iDb<db->nDb );
  assert( (p->btreeMask & (1<<u.aw.iDb))!=0 );
55690
55691
55692
55693
55694
55695
55696






55697
55698
55699
55700
55701
55702
55703
55704
55705
55706
55707
55708
55709
55710
55711
55712
55713
55714
55715
55716
55717
55718
55719




55720




55721
55722
55723
55724
55725
55726
55727
55728
55729
55730
55731
** and register P2 becomes ephemeral.  If the cursor is changed, the
** value of register P2 will then change.  Make sure this does not
** cause any problems.)
**
** This instruction only works on tables.  The equivalent instruction
** for indices is OP_IdxInsert.
*/






case OP_Insert: {
#if 0  /* local variables moved into u.bf */
  Mem *pData;       /* MEM cell holding data for the record to be inserted */
  Mem *pKey;        /* MEM cell holding key  for the record */
  i64 iKey;         /* The integer ROWID or key for the record to be inserted */
  VdbeCursor *pC;   /* Cursor to table into which insert is written */
  int nZero;        /* Number of zero-bytes to append */
  int seekResult;   /* Result of prior seek or 0 if no USESEEKRESULT flag */
  const char *zDb;  /* database name - used by the update hook */
  const char *zTbl; /* Table name - used by the opdate hook */
  int op;           /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
#endif /* local variables moved into u.bf */

  u.bf.pData = &p->aMem[pOp->p2];
  u.bf.pKey = &p->aMem[pOp->p3];
  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  u.bf.pC = p->apCsr[pOp->p1];
  assert( u.bf.pC!=0 );
  assert( u.bf.pC->pCursor!=0 );
  assert( u.bf.pC->pseudoTableReg==0 );
  assert( u.bf.pKey->flags & MEM_Int );
  assert( u.bf.pC->isTable );
  REGISTER_TRACE(pOp->p2, u.bf.pData);




  REGISTER_TRACE(pOp->p3, u.bf.pKey);





  u.bf.iKey = u.bf.pKey->u.i;
  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = u.bf.pKey->u.i;
  if( u.bf.pData->flags & MEM_Null ){
    u.bf.pData->z = 0;
    u.bf.pData->n = 0;
  }else{
    assert( u.bf.pData->flags & (MEM_Blob|MEM_Str) );
  }
  u.bf.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bf.pC->seekResult : 0);







>
>
>
>
>
>
|













<





<


>
>
>
>
|
>
>
>
>
|
|

|







55777
55778
55779
55780
55781
55782
55783
55784
55785
55786
55787
55788
55789
55790
55791
55792
55793
55794
55795
55796
55797
55798
55799
55800
55801
55802
55803

55804
55805
55806
55807
55808

55809
55810
55811
55812
55813
55814
55815
55816
55817
55818
55819
55820
55821
55822
55823
55824
55825
55826
55827
55828
55829
55830
** and register P2 becomes ephemeral.  If the cursor is changed, the
** value of register P2 will then change.  Make sure this does not
** cause any problems.)
**
** This instruction only works on tables.  The equivalent instruction
** for indices is OP_IdxInsert.
*/
/* Opcode: InsertInt P1 P2 P3 P4 P5
**
** This works exactly like OP_Insert except that the key is the
** integer value P3, not the value of the integer stored in register P3.
*/
case OP_Insert: 
case OP_InsertInt: {
#if 0  /* local variables moved into u.bf */
  Mem *pData;       /* MEM cell holding data for the record to be inserted */
  Mem *pKey;        /* MEM cell holding key  for the record */
  i64 iKey;         /* The integer ROWID or key for the record to be inserted */
  VdbeCursor *pC;   /* Cursor to table into which insert is written */
  int nZero;        /* Number of zero-bytes to append */
  int seekResult;   /* Result of prior seek or 0 if no USESEEKRESULT flag */
  const char *zDb;  /* database name - used by the update hook */
  const char *zTbl; /* Table name - used by the opdate hook */
  int op;           /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */
#endif /* local variables moved into u.bf */

  u.bf.pData = &p->aMem[pOp->p2];

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  u.bf.pC = p->apCsr[pOp->p1];
  assert( u.bf.pC!=0 );
  assert( u.bf.pC->pCursor!=0 );
  assert( u.bf.pC->pseudoTableReg==0 );

  assert( u.bf.pC->isTable );
  REGISTER_TRACE(pOp->p2, u.bf.pData);

  if( pOp->opcode==OP_Insert ){
    u.bf.pKey = &p->aMem[pOp->p3];
    assert( u.bf.pKey->flags & MEM_Int );
    REGISTER_TRACE(pOp->p3, u.bf.pKey);
    u.bf.iKey = u.bf.pKey->u.i;
  }else{
    assert( pOp->opcode==OP_InsertInt );
    u.bf.iKey = pOp->p3;
  }

  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = u.bf.iKey;
  if( u.bf.pData->flags & MEM_Null ){
    u.bf.pData->z = 0;
    u.bf.pData->n = 0;
  }else{
    assert( u.bf.pData->flags & (MEM_Blob|MEM_Str) );
  }
  u.bf.seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? u.bf.pC->seekResult : 0);
57035
57036
57037
57038
57039
57040
57041
57042
57043
57044
57045
57046
57047
57048
57049
  u.cc.n = pOp->p5;
  assert( u.cc.n>=0 );
  u.cc.pRec = &p->aMem[pOp->p2];
  u.cc.apVal = p->apArg;
  assert( u.cc.apVal || u.cc.n==0 );
  for(u.cc.i=0; u.cc.i<u.cc.n; u.cc.i++, u.cc.pRec++){
    u.cc.apVal[u.cc.i] = u.cc.pRec;
    storeTypeInfo(u.cc.pRec, encoding);
  }
  u.cc.ctx.pFunc = pOp->p4.pFunc;
  assert( pOp->p3>0 && pOp->p3<=p->nMem );
  u.cc.ctx.pMem = u.cc.pMem = &p->aMem[pOp->p3];
  u.cc.pMem->n++;
  u.cc.ctx.s.flags = MEM_Null;
  u.cc.ctx.s.z = 0;







|







57134
57135
57136
57137
57138
57139
57140
57141
57142
57143
57144
57145
57146
57147
57148
  u.cc.n = pOp->p5;
  assert( u.cc.n>=0 );
  u.cc.pRec = &p->aMem[pOp->p2];
  u.cc.apVal = p->apArg;
  assert( u.cc.apVal || u.cc.n==0 );
  for(u.cc.i=0; u.cc.i<u.cc.n; u.cc.i++, u.cc.pRec++){
    u.cc.apVal[u.cc.i] = u.cc.pRec;
    sqlite3VdbeMemStoreType(u.cc.pRec);
  }
  u.cc.ctx.pFunc = pOp->p4.pFunc;
  assert( pOp->p3>0 && pOp->p3<=p->nMem );
  u.cc.ctx.pMem = u.cc.pMem = &p->aMem[pOp->p3];
  u.cc.pMem->n++;
  u.cc.ctx.s.flags = MEM_Null;
  u.cc.ctx.s.z = 0;
57333
57334
57335
57336
57337
57338
57339
57340
57341
57342
57343
57344
57345
57346
57347

  /* Invoke the xFilter method */
  {
    u.ch.res = 0;
    u.ch.apArg = p->apArg;
    for(u.ch.i = 0; u.ch.i<u.ch.nArg; u.ch.i++){
      u.ch.apArg[u.ch.i] = &u.ch.pArgc[u.ch.i+1];
      storeTypeInfo(u.ch.apArg[u.ch.i], 0);
    }

    if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse;
    p->inVtabMethod = 1;
    rc = u.ch.pModule->xFilter(u.ch.pVtabCursor, u.ch.iQuery, pOp->p4.z, u.ch.nArg, u.ch.apArg);
    p->inVtabMethod = 0;
    sqlite3DbFree(db, p->zErrMsg);







|







57432
57433
57434
57435
57436
57437
57438
57439
57440
57441
57442
57443
57444
57445
57446

  /* Invoke the xFilter method */
  {
    u.ch.res = 0;
    u.ch.apArg = p->apArg;
    for(u.ch.i = 0; u.ch.i<u.ch.nArg; u.ch.i++){
      u.ch.apArg[u.ch.i] = &u.ch.pArgc[u.ch.i+1];
      sqlite3VdbeMemStoreType(u.ch.apArg[u.ch.i]);
    }

    if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse;
    p->inVtabMethod = 1;
    rc = u.ch.pModule->xFilter(u.ch.pVtabCursor, u.ch.iQuery, pOp->p4.z, u.ch.nArg, u.ch.apArg);
    p->inVtabMethod = 0;
    sqlite3DbFree(db, p->zErrMsg);
57545
57546
57547
57548
57549
57550
57551
57552
57553
57554
57555
57556
57557
57558
57559
  u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
  u.cl.nArg = pOp->p2;
  assert( pOp->p4type==P4_VTAB );
  if( ALWAYS(u.cl.pModule->xUpdate) ){
    u.cl.apArg = p->apArg;
    u.cl.pX = &p->aMem[pOp->p3];
    for(u.cl.i=0; u.cl.i<u.cl.nArg; u.cl.i++){
      storeTypeInfo(u.cl.pX, 0);
      u.cl.apArg[u.cl.i] = u.cl.pX;
      u.cl.pX++;
    }
    if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse;
    rc = u.cl.pModule->xUpdate(u.cl.pVtab, u.cl.nArg, u.cl.apArg, &u.cl.rowid);
    sqlite3DbFree(db, p->zErrMsg);
    p->zErrMsg = u.cl.pVtab->zErrMsg;







|







57644
57645
57646
57647
57648
57649
57650
57651
57652
57653
57654
57655
57656
57657
57658
  u.cl.pModule = (sqlite3_module *)u.cl.pVtab->pModule;
  u.cl.nArg = pOp->p2;
  assert( pOp->p4type==P4_VTAB );
  if( ALWAYS(u.cl.pModule->xUpdate) ){
    u.cl.apArg = p->apArg;
    u.cl.pX = &p->aMem[pOp->p3];
    for(u.cl.i=0; u.cl.i<u.cl.nArg; u.cl.i++){
      sqlite3VdbeMemStoreType(u.cl.pX);
      u.cl.apArg[u.cl.i] = u.cl.pX;
      u.cl.pX++;
    }
    if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse;
    rc = u.cl.pModule->xUpdate(u.cl.pVtab, u.cl.nArg, u.cl.apArg, &u.cl.rowid);
    sqlite3DbFree(db, p->zErrMsg);
    p->zErrMsg = u.cl.pVtab->zErrMsg;
59166
59167
59168
59169
59170
59171
59172





















59173
59174
59175
59176
59177
59178
59179
      pTopNC = pTopNC->pNext;
    }
    return WRC_Prune;
  } else {
    return WRC_Abort;
  }
}






















/*
** This routine is callback for sqlite3WalkExpr().
**
** Resolve symbolic names into TK_COLUMN operators for the current
** node in the expression tree.  Return 0 to continue the search down
** the tree or 2 to abort the tree walk.







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







59265
59266
59267
59268
59269
59270
59271
59272
59273
59274
59275
59276
59277
59278
59279
59280
59281
59282
59283
59284
59285
59286
59287
59288
59289
59290
59291
59292
59293
59294
59295
59296
59297
59298
59299
      pTopNC = pTopNC->pNext;
    }
    return WRC_Prune;
  } else {
    return WRC_Abort;
  }
}

/*
** Allocate and return a pointer to an expression to load the column iCol
** from datasource iSrc datasource in SrcList pSrc.
*/
SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSrc, int iCol){
  Expr *p = sqlite3ExprAlloc(db, TK_COLUMN, 0, 0);
  if( p ){
    struct SrcList_item *pItem = &pSrc->a[iSrc];
    p->pTab = pItem->pTab;
    p->iTable = pItem->iCursor;
    if( p->pTab->iPKey==iCol ){
      p->iColumn = -1;
    }else{
      p->iColumn = iCol;
      pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
    }
    ExprSetProperty(p, EP_Resolved);
  }
  return p;
}

/*
** This routine is callback for sqlite3WalkExpr().
**
** Resolve symbolic names into TK_COLUMN operators for the current
** node in the expression tree.  Return 0 to continue the search down
** the tree or 2 to abort the tree walk.
60514
60515
60516
60517
60518
60519
60520
60521
60522
60523
60524
60525
60526
60527
60528
60529
60530
60531
60532
60533
  assert( !ExprHasAnyProperty(pExpr, EP_IntValue|EP_Reduced|EP_TokenOnly) );
  z = pExpr->u.zToken;
  assert( z!=0 );
  assert( z[0]!=0 );
  if( z[1]==0 ){
    /* Wildcard of the form "?".  Assign the next variable number */
    assert( z[0]=='?' );
    pExpr->iTable = ++pParse->nVar;
  }else if( z[0]=='?' ){
    /* Wildcard of the form "?nnn".  Convert "nnn" to an integer and
    ** use it as the variable number */
    int i;
    pExpr->iTable = i = atoi((char*)&z[1]);
    testcase( i==0 );
    testcase( i==1 );
    testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
    testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
    if( i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
      sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
          db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);







|




|







60634
60635
60636
60637
60638
60639
60640
60641
60642
60643
60644
60645
60646
60647
60648
60649
60650
60651
60652
60653
  assert( !ExprHasAnyProperty(pExpr, EP_IntValue|EP_Reduced|EP_TokenOnly) );
  z = pExpr->u.zToken;
  assert( z!=0 );
  assert( z[0]!=0 );
  if( z[1]==0 ){
    /* Wildcard of the form "?".  Assign the next variable number */
    assert( z[0]=='?' );
    pExpr->iColumn = ++pParse->nVar;
  }else if( z[0]=='?' ){
    /* Wildcard of the form "?nnn".  Convert "nnn" to an integer and
    ** use it as the variable number */
    int i;
    pExpr->iColumn = i = atoi((char*)&z[1]);
    testcase( i==0 );
    testcase( i==1 );
    testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 );
    testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] );
    if( i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){
      sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d",
          db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]);
60543
60544
60545
60546
60547
60548
60549
60550
60551
60552
60553
60554
60555
60556
60557
60558
60559
60560
60561
60562
    int i;
    u32 n;
    n = sqlite3Strlen30(z);
    for(i=0; i<pParse->nVarExpr; i++){
      Expr *pE = pParse->apVarExpr[i];
      assert( pE!=0 );
      if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
        pExpr->iTable = pE->iTable;
        break;
      }
    }
    if( i>=pParse->nVarExpr ){
      pExpr->iTable = ++pParse->nVar;
      if( pParse->nVarExpr>=pParse->nVarExprAlloc-1 ){
        pParse->nVarExprAlloc += pParse->nVarExprAlloc + 10;
        pParse->apVarExpr =
            sqlite3DbReallocOrFree(
              db,
              pParse->apVarExpr,
              pParse->nVarExprAlloc*sizeof(pParse->apVarExpr[0])







|




|







60663
60664
60665
60666
60667
60668
60669
60670
60671
60672
60673
60674
60675
60676
60677
60678
60679
60680
60681
60682
    int i;
    u32 n;
    n = sqlite3Strlen30(z);
    for(i=0; i<pParse->nVarExpr; i++){
      Expr *pE = pParse->apVarExpr[i];
      assert( pE!=0 );
      if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
        pExpr->iColumn = pE->iColumn;
        break;
      }
    }
    if( i>=pParse->nVarExpr ){
      pExpr->iColumn = ++pParse->nVar;
      if( pParse->nVarExpr>=pParse->nVarExprAlloc-1 ){
        pParse->nVarExprAlloc += pParse->nVarExprAlloc + 10;
        pParse->apVarExpr =
            sqlite3DbReallocOrFree(
              db,
              pParse->apVarExpr,
              pParse->nVarExprAlloc*sizeof(pParse->apVarExpr[0])
61314
61315
61316
61317
61318
61319
61320


61321
61322
61323
61324
61325
61326
61327
*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){
  Select *p;                            /* SELECT to the right of IN operator */
  int eType = 0;                        /* Type of RHS table. IN_INDEX_* */
  int iTab = pParse->nTab++;            /* Cursor of the RHS table */
  int mustBeUnique = (prNotFound==0);   /* True if RHS must be unique */



  /* Check to see if an existing table or index can be used to
  ** satisfy the query.  This is preferable to generating a new 
  ** ephemeral table.
  */
  p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0);
  if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){







>
>







61434
61435
61436
61437
61438
61439
61440
61441
61442
61443
61444
61445
61446
61447
61448
61449
*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){
  Select *p;                            /* SELECT to the right of IN operator */
  int eType = 0;                        /* Type of RHS table. IN_INDEX_* */
  int iTab = pParse->nTab++;            /* Cursor of the RHS table */
  int mustBeUnique = (prNotFound==0);   /* True if RHS must be unique */

  assert( pX->op==TK_IN );

  /* Check to see if an existing table or index can be used to
  ** satisfy the query.  This is preferable to generating a new 
  ** ephemeral table.
  */
  p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0);
  if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){
61392
61393
61394
61395
61396
61397
61398
61399
61400
61401
61402
61403
61404
61405
61406
          }
        }
      }
    }
  }

  if( eType==0 ){
    /* Could not found an existing able or index to use as the RHS b-tree.
    ** We will have to generate an ephemeral table to do the job.
    */
    int rMayHaveNull = 0;
    eType = IN_INDEX_EPH;
    if( prNotFound ){
      *prNotFound = rMayHaveNull = ++pParse->nMem;
    }else if( pX->pLeft->iColumn<0 && !ExprHasAnyProperty(pX, EP_xIsSelect) ){







|







61514
61515
61516
61517
61518
61519
61520
61521
61522
61523
61524
61525
61526
61527
61528
          }
        }
      }
    }
  }

  if( eType==0 ){
    /* Could not found an existing table or index to use as the RHS b-tree.
    ** We will have to generate an ephemeral table to do the job.
    */
    int rMayHaveNull = 0;
    eType = IN_INDEX_EPH;
    if( prNotFound ){
      *prNotFound = rMayHaveNull = ++pParse->nMem;
    }else if( pX->pLeft->iColumn<0 && !ExprHasAnyProperty(pX, EP_xIsSelect) ){
61439
61440
61441
61442
61443
61444
61445



61446
61447
61448
61449
61450
61451
61452
61453
61454

61455
61456
61457
61458
61459
61460
61461
61462
61463
** all corresponding LHS elements.  All this routine does is initialize
** the register given by rMayHaveNull to NULL.  Calling routines will take
** care of changing this register value to non-NULL if the RHS is NULL-free.
**
** If rMayHaveNull is zero, that means that the subquery is being used
** for membership testing only.  There is no need to initialize any
** registers to indicate the presense or absence of NULLs on the RHS.



*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE void sqlite3CodeSubselect(
  Parse *pParse,          /* Parsing context */
  Expr *pExpr,            /* The IN, SELECT, or EXISTS operator */
  int rMayHaveNull,       /* Register that records whether NULLs exist in RHS */
  int isRowid             /* If true, LHS of IN operator is a rowid */
){
  int testAddr = 0;                       /* One-time test address */

  Vdbe *v = sqlite3GetVdbe(pParse);
  if( NEVER(v==0) ) return;
  sqlite3ExprCachePush(pParse);

  /* This code must be run in its entirety every time it is encountered
  ** if any of the following is true:
  **
  **    *  The right-hand side is a correlated subquery
  **    *  The right-hand side is an expression list containing variables







>
>
>


|






>

|







61561
61562
61563
61564
61565
61566
61567
61568
61569
61570
61571
61572
61573
61574
61575
61576
61577
61578
61579
61580
61581
61582
61583
61584
61585
61586
61587
61588
61589
** all corresponding LHS elements.  All this routine does is initialize
** the register given by rMayHaveNull to NULL.  Calling routines will take
** care of changing this register value to non-NULL if the RHS is NULL-free.
**
** If rMayHaveNull is zero, that means that the subquery is being used
** for membership testing only.  There is no need to initialize any
** registers to indicate the presense or absence of NULLs on the RHS.
**
** For a SELECT or EXISTS operator, return the register that holds the
** result.  For IN operators or if an error occurs, the return value is 0.
*/
#ifndef SQLITE_OMIT_SUBQUERY
SQLITE_PRIVATE int sqlite3CodeSubselect(
  Parse *pParse,          /* Parsing context */
  Expr *pExpr,            /* The IN, SELECT, or EXISTS operator */
  int rMayHaveNull,       /* Register that records whether NULLs exist in RHS */
  int isRowid             /* If true, LHS of IN operator is a rowid */
){
  int testAddr = 0;                       /* One-time test address */
  int rReg = 0;                           /* Register storing resulting */
  Vdbe *v = sqlite3GetVdbe(pParse);
  if( NEVER(v==0) ) return 0;
  sqlite3ExprCachePush(pParse);

  /* This code must be run in its entirety every time it is encountered
  ** if any of the following is true:
  **
  **    *  The right-hand side is a correlated subquery
  **    *  The right-hand side is an expression list containing variables
61514
61515
61516
61517
61518
61519
61520
61521
61522
61523
61524
61525
61526
61527
61528
        ExprList *pEList;

        assert( !isRowid );
        sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable);
        dest.affinity = (u8)affinity;
        assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable );
        if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){
          return;
        }
        pEList = pExpr->x.pSelect->pEList;
        if( ALWAYS(pEList!=0 && pEList->nExpr>0) ){ 
          keyInfo.aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft,
              pEList->a[0].pExpr);
        }
      }else if( pExpr->x.pList!=0 ){







|







61640
61641
61642
61643
61644
61645
61646
61647
61648
61649
61650
61651
61652
61653
61654
        ExprList *pEList;

        assert( !isRowid );
        sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable);
        dest.affinity = (u8)affinity;
        assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable );
        if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){
          return 0;
        }
        pEList = pExpr->x.pSelect->pEList;
        if( ALWAYS(pEList!=0 && pEList->nExpr>0) ){ 
          keyInfo.aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft,
              pEList->a[0].pExpr);
        }
      }else if( pExpr->x.pList!=0 ){
61545
61546
61547
61548
61549
61550
61551

61552
61553
61554
61555
61556
61557
61558
61559
61560
61561
61562
61563



61564
61565
61566

61567
61568
61569
61570
61571

61572
61573
61574
61575
61576
61577
61578

        /* Loop through each expression in <exprlist>. */
        r1 = sqlite3GetTempReg(pParse);
        r2 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp2(v, OP_Null, 0, r2);
        for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){
          Expr *pE2 = pItem->pExpr;


          /* If the expression is not constant then we will need to
          ** disable the test that was generated above that makes sure
          ** this code only executes once.  Because for a non-constant
          ** expression we need to rerun this code each time.
          */
          if( testAddr && !sqlite3ExprIsConstant(pE2) ){
            sqlite3VdbeChangeToNoop(v, testAddr-1, 2);
            testAddr = 0;
          }

          /* Evaluate the expression and insert it into the temp table */



          r3 = sqlite3ExprCodeTarget(pParse, pE2, r1);
          if( isRowid ){
            sqlite3VdbeAddOp2(v, OP_MustBeInt, r3, sqlite3VdbeCurrentAddr(v)+2);

            sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3);
          }else{
            sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1);
            sqlite3ExprCacheAffinityChange(pParse, r3, 1);
            sqlite3VdbeAddOp2(v, OP_IdxInsert, pExpr->iTable, r2);

          }
        }
        sqlite3ReleaseTempReg(pParse, r1);
        sqlite3ReleaseTempReg(pParse, r2);
      }
      if( !isRowid ){
        sqlite3VdbeChangeP4(v, addr, (void *)&keyInfo, P4_KEYINFO);







>












>
>
>
|
|
|
>
|
|
|
|
|
>







61671
61672
61673
61674
61675
61676
61677
61678
61679
61680
61681
61682
61683
61684
61685
61686
61687
61688
61689
61690
61691
61692
61693
61694
61695
61696
61697
61698
61699
61700
61701
61702
61703
61704
61705
61706
61707
61708
61709
61710

        /* Loop through each expression in <exprlist>. */
        r1 = sqlite3GetTempReg(pParse);
        r2 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp2(v, OP_Null, 0, r2);
        for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){
          Expr *pE2 = pItem->pExpr;
          int iValToIns;

          /* If the expression is not constant then we will need to
          ** disable the test that was generated above that makes sure
          ** this code only executes once.  Because for a non-constant
          ** expression we need to rerun this code each time.
          */
          if( testAddr && !sqlite3ExprIsConstant(pE2) ){
            sqlite3VdbeChangeToNoop(v, testAddr-1, 2);
            testAddr = 0;
          }

          /* Evaluate the expression and insert it into the temp table */
          if( isRowid && sqlite3ExprIsInteger(pE2, &iValToIns) ){
            sqlite3VdbeAddOp3(v, OP_InsertInt, pExpr->iTable, r2, iValToIns);
          }else{
            r3 = sqlite3ExprCodeTarget(pParse, pE2, r1);
            if( isRowid ){
              sqlite3VdbeAddOp2(v, OP_MustBeInt, r3,
                                sqlite3VdbeCurrentAddr(v)+2);
              sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3);
            }else{
              sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1);
              sqlite3ExprCacheAffinityChange(pParse, r3, 1);
              sqlite3VdbeAddOp2(v, OP_IdxInsert, pExpr->iTable, r2);
            }
          }
        }
        sqlite3ReleaseTempReg(pParse, r1);
        sqlite3ReleaseTempReg(pParse, r2);
      }
      if( !isRowid ){
        sqlite3VdbeChangeP4(v, addr, (void *)&keyInfo, P4_KEYINFO);
61608
61609
61610
61611
61612
61613
61614
61615
61616
61617
61618
61619
61620
61621
61622
61623
61624
61625
61626
61627
61628
61629
61630
61631
61632
61633
61634
61635
        dest.eDest = SRT_Exists;
        sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iParm);
        VdbeComment((v, "Init EXISTS result"));
      }
      sqlite3ExprDelete(pParse->db, pSel->pLimit);
      pSel->pLimit = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, &one);
      if( sqlite3Select(pParse, pSel, &dest) ){
        return;
      }
      pExpr->iColumn = (i16)dest.iParm;
      ExprSetIrreducible(pExpr);
      break;
    }
  }

  if( testAddr ){
    sqlite3VdbeJumpHere(v, testAddr-1);
  }
  sqlite3ExprCachePop(pParse, 1);

  return;
}
#endif /* SQLITE_OMIT_SUBQUERY */

/*
** Duplicate an 8-byte value
*/
static char *dup8bytes(Vdbe *v, const char *in){







|

|










|







61740
61741
61742
61743
61744
61745
61746
61747
61748
61749
61750
61751
61752
61753
61754
61755
61756
61757
61758
61759
61760
61761
61762
61763
61764
61765
61766
61767
        dest.eDest = SRT_Exists;
        sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iParm);
        VdbeComment((v, "Init EXISTS result"));
      }
      sqlite3ExprDelete(pParse->db, pSel->pLimit);
      pSel->pLimit = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, &one);
      if( sqlite3Select(pParse, pSel, &dest) ){
        return 0;
      }
      rReg = dest.iParm;
      ExprSetIrreducible(pExpr);
      break;
    }
  }

  if( testAddr ){
    sqlite3VdbeJumpHere(v, testAddr-1);
  }
  sqlite3ExprCachePop(pParse, 1);

  return rReg;
}
#endif /* SQLITE_OMIT_SUBQUERY */

/*
** Duplicate an 8-byte value
*/
static char *dup8bytes(Vdbe *v, const char *in){
62107
62108
62109
62110
62111
62112
62113
62114
62115
62116
62117
62118
62119
62120
62121
62122
62123
62124
62125
62126
62127
62128
62129
62130
62131
62132
    case TK_VARIABLE: {
      VdbeOp *pOp;
      assert( !ExprHasProperty(pExpr, EP_IntValue) );
      assert( pExpr->u.zToken!=0 );
      assert( pExpr->u.zToken[0]!=0 );
      if( pExpr->u.zToken[1]==0
         && (pOp = sqlite3VdbeGetOp(v, -1))->opcode==OP_Variable
         && pOp->p1+pOp->p3==pExpr->iTable
         && pOp->p2+pOp->p3==target
         && pOp->p4.z==0
      ){
        /* If the previous instruction was a copy of the previous unnamed
        ** parameter into the previous register, then simply increment the
        ** repeat count on the prior instruction rather than making a new
        ** instruction.
        */
        pOp->p3++;
      }else{
        sqlite3VdbeAddOp3(v, OP_Variable, pExpr->iTable, target, 1);
        if( pExpr->u.zToken[1]!=0 ){
          sqlite3VdbeChangeP4(v, -1, pExpr->u.zToken, 0);
        }
      }
      break;
    }
    case TK_REGISTER: {







|










|







62239
62240
62241
62242
62243
62244
62245
62246
62247
62248
62249
62250
62251
62252
62253
62254
62255
62256
62257
62258
62259
62260
62261
62262
62263
62264
    case TK_VARIABLE: {
      VdbeOp *pOp;
      assert( !ExprHasProperty(pExpr, EP_IntValue) );
      assert( pExpr->u.zToken!=0 );
      assert( pExpr->u.zToken[0]!=0 );
      if( pExpr->u.zToken[1]==0
         && (pOp = sqlite3VdbeGetOp(v, -1))->opcode==OP_Variable
         && pOp->p1+pOp->p3==pExpr->iColumn
         && pOp->p2+pOp->p3==target
         && pOp->p4.z==0
      ){
        /* If the previous instruction was a copy of the previous unnamed
        ** parameter into the previous register, then simply increment the
        ** repeat count on the prior instruction rather than making a new
        ** instruction.
        */
        pOp->p3++;
      }else{
        sqlite3VdbeAddOp3(v, OP_Variable, pExpr->iColumn, target, 1);
        if( pExpr->u.zToken[1]!=0 ){
          sqlite3VdbeChangeP4(v, -1, pExpr->u.zToken, 0);
        }
      }
      break;
    }
    case TK_REGISTER: {
62378
62379
62380
62381
62382
62383
62384
62385
62386
62387
62388
62389
62390
62391
62392
62393
      break;
    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
    case TK_SELECT: {
      testcase( op==TK_EXISTS );
      testcase( op==TK_SELECT );
      sqlite3CodeSubselect(pParse, pExpr, 0, 0);
      inReg = pExpr->iColumn;
      break;
    }
    case TK_IN: {
      int rNotFound = 0;
      int rMayHaveNull = 0;
      int j2, j3, j4, j5;
      char affinity;







|
<







62510
62511
62512
62513
62514
62515
62516
62517

62518
62519
62520
62521
62522
62523
62524
      break;
    }
#ifndef SQLITE_OMIT_SUBQUERY
    case TK_EXISTS:
    case TK_SELECT: {
      testcase( op==TK_EXISTS );
      testcase( op==TK_SELECT );
      inReg = sqlite3CodeSubselect(pParse, pExpr, 0, 0);

      break;
    }
    case TK_IN: {
      int rNotFound = 0;
      int rMayHaveNull = 0;
      int j2, j3, j4, j5;
      char affinity;
62744
62745
62746
62747
62748
62749
62750

62751
62752
62753
62754
62755
62756
62757
  ** keep the ALWAYS() in case the conditions above change with future
  ** modifications or enhancements. */
  if( ALWAYS(pExpr->op!=TK_REGISTER) ){  
    int iMem;
    iMem = ++pParse->nMem;
    sqlite3VdbeAddOp2(v, OP_Copy, inReg, iMem);
    pExpr->iTable = iMem;

    pExpr->op = TK_REGISTER;
  }
  return inReg;
}

/*
** Return TRUE if pExpr is an constant expression that is appropriate







>







62875
62876
62877
62878
62879
62880
62881
62882
62883
62884
62885
62886
62887
62888
62889
  ** keep the ALWAYS() in case the conditions above change with future
  ** modifications or enhancements. */
  if( ALWAYS(pExpr->op!=TK_REGISTER) ){  
    int iMem;
    iMem = ++pParse->nMem;
    sqlite3VdbeAddOp2(v, OP_Copy, inReg, iMem);
    pExpr->iTable = iMem;
    pExpr->op2 = pExpr->op;
    pExpr->op = TK_REGISTER;
  }
  return inReg;
}

/*
** Return TRUE if pExpr is an constant expression that is appropriate
62817
62818
62819
62820
62821
62822
62823

62824
62825
62826
62827
62828
62829
62830
** factoring out of a loop, then evaluate the expression
** into a register and convert the expression into a TK_REGISTER
** expression.
*/
static int evalConstExpr(Walker *pWalker, Expr *pExpr){
  Parse *pParse = pWalker->pParse;
  switch( pExpr->op ){

    case TK_REGISTER: {
      return WRC_Prune;
    }
    case TK_FUNCTION:
    case TK_AGG_FUNCTION:
    case TK_CONST_FUNC: {
      /* The arguments to a function have a fixed destination.







>







62949
62950
62951
62952
62953
62954
62955
62956
62957
62958
62959
62960
62961
62962
62963
** factoring out of a loop, then evaluate the expression
** into a register and convert the expression into a TK_REGISTER
** expression.
*/
static int evalConstExpr(Walker *pWalker, Expr *pExpr){
  Parse *pParse = pWalker->pParse;
  switch( pExpr->op ){
    case TK_IN:
    case TK_REGISTER: {
      return WRC_Prune;
    }
    case TK_FUNCTION:
    case TK_AGG_FUNCTION:
    case TK_CONST_FUNC: {
      /* The arguments to a function have a fixed destination.
78177
78178
78179
78180
78181
78182
78183

78184
78185
78186
78187
78188
78189
78190
78191
78192
78193
78194
78195
78196
78197

78198
78199
78200
78201
78202
78203
78204
** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
*/
static int sqlite3Prepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  int saveSqlFlag,          /* True to copy SQL text into the sqlite3_stmt */

  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  Parse *pParse;            /* Parsing context */
  char *zErrMsg = 0;        /* Error message */
  int rc = SQLITE_OK;       /* Result code */
  int i;                    /* Loop counter */

  /* Allocate the parsing context */
  pParse = sqlite3StackAllocZero(db, sizeof(*pParse));
  if( pParse==0 ){
    rc = SQLITE_NOMEM;
    goto end_prepare;
  }


  if( sqlite3SafetyOn(db) ){
    rc = SQLITE_MISUSE;
    goto end_prepare;
  }
  assert( ppStmt && *ppStmt==0 );
  assert( !db->mallocFailed );







>














>







78310
78311
78312
78313
78314
78315
78316
78317
78318
78319
78320
78321
78322
78323
78324
78325
78326
78327
78328
78329
78330
78331
78332
78333
78334
78335
78336
78337
78338
78339
** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
*/
static int sqlite3Prepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  int saveSqlFlag,          /* True to copy SQL text into the sqlite3_stmt */
  Vdbe *pReprepare,         /* VM being reprepared */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  Parse *pParse;            /* Parsing context */
  char *zErrMsg = 0;        /* Error message */
  int rc = SQLITE_OK;       /* Result code */
  int i;                    /* Loop counter */

  /* Allocate the parsing context */
  pParse = sqlite3StackAllocZero(db, sizeof(*pParse));
  if( pParse==0 ){
    rc = SQLITE_NOMEM;
    goto end_prepare;
  }
  pParse->pReprepare = pReprepare;

  if( sqlite3SafetyOn(db) ){
    rc = SQLITE_MISUSE;
    goto end_prepare;
  }
  assert( ppStmt && *ppStmt==0 );
  assert( !db->mallocFailed );
78348
78349
78350
78351
78352
78353
78354

78355
78356
78357
78358
78359
78360
78361
78362
78363
78364
78365
78366
78367
78368
78369
78370
78371
78372
78373
78374
78375
78376
  return rc;
}
static int sqlite3LockAndPrepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  int saveSqlFlag,          /* True to copy SQL text into the sqlite3_stmt */

  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  assert( ppStmt!=0 );
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db) ){
    return SQLITE_MISUSE;
  }
  sqlite3_mutex_enter(db->mutex);
  sqlite3BtreeEnterAll(db);
  rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, ppStmt, pzTail);
  if( rc==SQLITE_SCHEMA ){
    sqlite3_finalize(*ppStmt);
    rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, ppStmt, pzTail);
  }
  sqlite3BtreeLeaveAll(db);
  sqlite3_mutex_leave(db->mutex);
  return rc;
}

/*







>











|


|







78483
78484
78485
78486
78487
78488
78489
78490
78491
78492
78493
78494
78495
78496
78497
78498
78499
78500
78501
78502
78503
78504
78505
78506
78507
78508
78509
78510
78511
78512
  return rc;
}
static int sqlite3LockAndPrepare(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  int saveSqlFlag,          /* True to copy SQL text into the sqlite3_stmt */
  Vdbe *pOld,               /* VM being reprepared */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  assert( ppStmt!=0 );
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db) ){
    return SQLITE_MISUSE;
  }
  sqlite3_mutex_enter(db->mutex);
  sqlite3BtreeEnterAll(db);
  rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, pOld, ppStmt, pzTail);
  if( rc==SQLITE_SCHEMA ){
    sqlite3_finalize(*ppStmt);
    rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, pOld, ppStmt, pzTail);
  }
  sqlite3BtreeLeaveAll(db);
  sqlite3_mutex_leave(db->mutex);
  return rc;
}

/*
78388
78389
78390
78391
78392
78393
78394
78395
78396
78397
78398
78399
78400
78401
78402
  sqlite3 *db;

  assert( sqlite3_mutex_held(sqlite3VdbeDb(p)->mutex) );
  zSql = sqlite3_sql((sqlite3_stmt *)p);
  assert( zSql!=0 );  /* Reprepare only called for prepare_v2() statements */
  db = sqlite3VdbeDb(p);
  assert( sqlite3_mutex_held(db->mutex) );
  rc = sqlite3LockAndPrepare(db, zSql, -1, 0, &pNew, 0);
  if( rc ){
    if( rc==SQLITE_NOMEM ){
      db->mallocFailed = 1;
    }
    assert( pNew==0 );
    return (rc==SQLITE_LOCKED) ? SQLITE_LOCKED : SQLITE_SCHEMA;
  }else{







|







78524
78525
78526
78527
78528
78529
78530
78531
78532
78533
78534
78535
78536
78537
78538
  sqlite3 *db;

  assert( sqlite3_mutex_held(sqlite3VdbeDb(p)->mutex) );
  zSql = sqlite3_sql((sqlite3_stmt *)p);
  assert( zSql!=0 );  /* Reprepare only called for prepare_v2() statements */
  db = sqlite3VdbeDb(p);
  assert( sqlite3_mutex_held(db->mutex) );
  rc = sqlite3LockAndPrepare(db, zSql, -1, 0, p, &pNew, 0);
  if( rc ){
    if( rc==SQLITE_NOMEM ){
      db->mallocFailed = 1;
    }
    assert( pNew==0 );
    return (rc==SQLITE_LOCKED) ? SQLITE_LOCKED : SQLITE_SCHEMA;
  }else{
78422
78423
78424
78425
78426
78427
78428
78429
78430
78431
78432
78433
78434
78435
78436
78437
78438
78439
78440
78441
78442
78443
78444
78445
78446
78447
78448
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  rc = sqlite3LockAndPrepare(db,zSql,nBytes,0,ppStmt,pzTail);
  assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 );  /* VERIFY: F13021 */
  return rc;
}
SQLITE_API int sqlite3_prepare_v2(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  rc = sqlite3LockAndPrepare(db,zSql,nBytes,1,ppStmt,pzTail);
  assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 );  /* VERIFY: F13021 */
  return rc;
}


#ifndef SQLITE_OMIT_UTF16
/*







|











|







78558
78559
78560
78561
78562
78563
78564
78565
78566
78567
78568
78569
78570
78571
78572
78573
78574
78575
78576
78577
78578
78579
78580
78581
78582
78583
78584
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  rc = sqlite3LockAndPrepare(db,zSql,nBytes,0,0,ppStmt,pzTail);
  assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 );  /* VERIFY: F13021 */
  return rc;
}
SQLITE_API int sqlite3_prepare_v2(
  sqlite3 *db,              /* Database handle. */
  const char *zSql,         /* UTF-8 encoded SQL statement. */
  int nBytes,               /* Length of zSql in bytes. */
  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
  const char **pzTail       /* OUT: End of parsed string */
){
  int rc;
  rc = sqlite3LockAndPrepare(db,zSql,nBytes,1,0,ppStmt,pzTail);
  assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 );  /* VERIFY: F13021 */
  return rc;
}


#ifndef SQLITE_OMIT_UTF16
/*
78468
78469
78470
78471
78472
78473
78474
78475
78476
78477
78478
78479
78480
78481
78482
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db) ){
    return SQLITE_MISUSE;
  }
  sqlite3_mutex_enter(db->mutex);
  zSql8 = sqlite3Utf16to8(db, zSql, nBytes);
  if( zSql8 ){
    rc = sqlite3LockAndPrepare(db, zSql8, -1, saveSqlFlag, ppStmt, &zTail8);
  }

  if( zTail8 && pzTail ){
    /* If sqlite3_prepare returns a tail pointer, we calculate the
    ** equivalent pointer into the UTF-16 string by counting the unicode
    ** characters between zSql8 and zTail8, and then returning a pointer
    ** the same number of characters into the UTF-16 string.







|







78604
78605
78606
78607
78608
78609
78610
78611
78612
78613
78614
78615
78616
78617
78618
  *ppStmt = 0;
  if( !sqlite3SafetyCheckOk(db) ){
    return SQLITE_MISUSE;
  }
  sqlite3_mutex_enter(db->mutex);
  zSql8 = sqlite3Utf16to8(db, zSql, nBytes);
  if( zSql8 ){
    rc = sqlite3LockAndPrepare(db, zSql8, -1, saveSqlFlag, 0, ppStmt, &zTail8);
  }

  if( zTail8 && pzTail ){
    /* If sqlite3_prepare returns a tail pointer, we calculate the
    ** equivalent pointer into the UTF-16 string by counting the unicode
    ** characters between zSql8 and zTail8, and then returning a pointer
    ** the same number of characters into the UTF-16 string.
78716
78717
78718
78719
78720
78721
78722

78723

78724
78725
78726
78727
78728
78729

78730
78731
78732
78733
78734
78735
78736
78737
78738
78739
78740
78741
78742

78743

78744
78745
78746
78747
78748
78749
78750
78751
78752
78753
78754
78755
78756
78757
78758
78759
78760
78761
78762
78763
78764
78765
78766
78767
78768
78769
78770
78771
78772
78773
78774
  for(i=0; i<pTab->nCol; i++){
    if( sqlite3StrICmp(pTab->aCol[i].zName, zCol)==0 ) return i;
  }
  return -1;
}

/*

** Create an expression node for an identifier with the name of zName

*/
SQLITE_PRIVATE Expr *sqlite3CreateIdExpr(Parse *pParse, const char *zName){
  return sqlite3Expr(pParse->db, TK_ID, zName);
}

/*

** Add a term to the WHERE expression in *ppExpr that requires the
** zCol column to be equal in the two tables pTab1 and pTab2.
*/
static void addWhereTerm(
  Parse *pParse,           /* Parsing context */
  const char *zCol,        /* Name of the column */
  const Table *pTab1,      /* First table */
  const char *zAlias1,     /* Alias for first table.  May be NULL */
  const Table *pTab2,      /* Second table */
  const char *zAlias2,     /* Alias for second table.  May be NULL */
  int iRightJoinTable,     /* VDBE cursor for the right table */
  Expr **ppExpr,           /* Add the equality term to this expression */
  int isOuterJoin          /* True if dealing with an OUTER join */

){

  Expr *pE1a, *pE1b, *pE1c;
  Expr *pE2a, *pE2b, *pE2c;
  Expr *pE;

  pE1a = sqlite3CreateIdExpr(pParse, zCol);
  pE2a = sqlite3CreateIdExpr(pParse, zCol);
  if( zAlias1==0 ){
    zAlias1 = pTab1->zName;
  }
  pE1b = sqlite3CreateIdExpr(pParse, zAlias1);
  if( zAlias2==0 ){
    zAlias2 = pTab2->zName;
  }
  pE2b = sqlite3CreateIdExpr(pParse, zAlias2);
  pE1c = sqlite3PExpr(pParse, TK_DOT, pE1b, pE1a, 0);
  pE2c = sqlite3PExpr(pParse, TK_DOT, pE2b, pE2a, 0);
  pE = sqlite3PExpr(pParse, TK_EQ, pE1c, pE2c, 0);
  if( pE && isOuterJoin ){
    ExprSetProperty(pE, EP_FromJoin);
    assert( !ExprHasAnyProperty(pE, EP_TokenOnly|EP_Reduced) );
    ExprSetIrreducible(pE);
    pE->iRightJoinTable = (i16)iRightJoinTable;
  }
  *ppExpr = sqlite3ExprAnd(pParse->db,*ppExpr, pE);
}

/*
** Set the EP_FromJoin property on all terms of the given expression.
** And set the Expr.iRightJoinTable to iTable for every term in the
** expression.
**







>
|
>
|
<
<
<
|
|
>
|
|


|
|
|
|
<
|
<
<
|
>

>
|
|
|

<
|
|
|
|
|
<
|
|
<
<
<
|
|
|
|
|
|

|







78852
78853
78854
78855
78856
78857
78858
78859
78860
78861
78862



78863
78864
78865
78866
78867
78868
78869
78870
78871
78872
78873

78874


78875
78876
78877
78878
78879
78880
78881
78882

78883
78884
78885
78886
78887

78888
78889



78890
78891
78892
78893
78894
78895
78896
78897
78898
78899
78900
78901
78902
78903
78904
  for(i=0; i<pTab->nCol; i++){
    if( sqlite3StrICmp(pTab->aCol[i].zName, zCol)==0 ) return i;
  }
  return -1;
}

/*
** This function is used to add terms implied by JOIN syntax to the
** WHERE clause expression of a SELECT statement. The new term, which
** is ANDed with the existing WHERE clause, is of the form:
**



**    (tab1.col1 = tab2.col2)
**
** where tab1 is the iSrc'th table in SrcList pSrc and tab2 is the 
** (iSrc+1)'th. Column col1 is column iColLeft of tab1, and col2 is
** column iColRight of tab2.
*/
static void addWhereTerm(
  Parse *pParse,                  /* Parsing context */
  SrcList *pSrc,                  /* List of tables in FROM clause */
  int iSrc,                       /* Index of first table to join in pSrc */
  int iColLeft,                   /* Index of column in first table */

  int iColRight,                  /* Index of column in second table */


  int isOuterJoin,                /* True if this is an OUTER join */
  Expr **ppWhere                  /* IN/OUT: The WHERE clause to add to */
){
  sqlite3 *db = pParse->db;
  Expr *pE1;
  Expr *pE2;
  Expr *pEq;


  assert( pSrc->nSrc>(iSrc+1) );
  assert( pSrc->a[iSrc].pTab );
  assert( pSrc->a[iSrc+1].pTab );

  pE1 = sqlite3CreateColumnExpr(db, pSrc, iSrc, iColLeft);

  pE2 = sqlite3CreateColumnExpr(db, pSrc, iSrc+1, iColRight);




  pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2, 0);
  if( pEq && isOuterJoin ){
    ExprSetProperty(pEq, EP_FromJoin);
    assert( !ExprHasAnyProperty(pEq, EP_TokenOnly|EP_Reduced) );
    ExprSetIrreducible(pEq);
    pEq->iRightJoinTable = (i16)pE2->iTable;
  }
  *ppWhere = sqlite3ExprAnd(db, *ppWhere, pEq);
}

/*
** Set the EP_FromJoin property on all terms of the given expression.
** And set the Expr.iRightJoinTable to iTable for every term in the
** expression.
**
78842
78843
78844
78845
78846
78847
78848
78849
78850
78851
78852
78853
78854
78855
78856
78857
78858
78859
78860
      if( pRight->pOn || pRight->pUsing ){
        sqlite3ErrorMsg(pParse, "a NATURAL join may not have "
           "an ON or USING clause", 0);
        return 1;
      }
      for(j=0; j<pLeftTab->nCol; j++){
        char *zName = pLeftTab->aCol[j].zName;
        if( columnIndex(pRightTab, zName)>=0 ){
          addWhereTerm(pParse, zName, pLeftTab, pLeft->zAlias, 
                              pRightTab, pRight->zAlias,
                              pRight->iCursor, &p->pWhere, isOuter);
          
        }
      }
    }

    /* Disallow both ON and USING clauses in the same join
    */
    if( pRight->pOn && pRight->pUsing ){







|
<
|
<
|







78972
78973
78974
78975
78976
78977
78978
78979

78980

78981
78982
78983
78984
78985
78986
78987
78988
      if( pRight->pOn || pRight->pUsing ){
        sqlite3ErrorMsg(pParse, "a NATURAL join may not have "
           "an ON or USING clause", 0);
        return 1;
      }
      for(j=0; j<pLeftTab->nCol; j++){
        char *zName = pLeftTab->aCol[j].zName;
        int iRightCol = columnIndex(pRightTab, zName);

        if( iRightCol>=0 ){

          addWhereTerm(pParse, pSrc, i, j, iRightCol, isOuter, &p->pWhere);
        }
      }
    }

    /* Disallow both ON and USING clauses in the same join
    */
    if( pRight->pOn && pRight->pUsing ){
78879
78880
78881
78882
78883
78884
78885
78886


78887
78888
78889
78890
78891
78892
78893
78894
78895
78896
78897
78898
78899
78900
    ** Report an error if any column mentioned in the USING clause is
    ** not contained in both tables to be joined.
    */
    if( pRight->pUsing ){
      IdList *pList = pRight->pUsing;
      for(j=0; j<pList->nId; j++){
        char *zName = pList->a[j].zName;
        if( columnIndex(pLeftTab, zName)<0 || columnIndex(pRightTab, zName)<0 ){


          sqlite3ErrorMsg(pParse, "cannot join using column %s - column "
            "not present in both tables", zName);
          return 1;
        }
        addWhereTerm(pParse, zName, pLeftTab, pLeft->zAlias, 
                            pRightTab, pRight->zAlias,
                            pRight->iCursor, &p->pWhere, isOuter);
      }
    }
  }
  return 0;
}

/*







|
>
>




|
<
<







79007
79008
79009
79010
79011
79012
79013
79014
79015
79016
79017
79018
79019
79020
79021


79022
79023
79024
79025
79026
79027
79028
    ** Report an error if any column mentioned in the USING clause is
    ** not contained in both tables to be joined.
    */
    if( pRight->pUsing ){
      IdList *pList = pRight->pUsing;
      for(j=0; j<pList->nId; j++){
        char *zName = pList->a[j].zName;
        int iLeftCol = columnIndex(pLeftTab, zName);
        int iRightCol = columnIndex(pRightTab, zName);
        if( iLeftCol<0 || iRightCol<0 ){
          sqlite3ErrorMsg(pParse, "cannot join using column %s - column "
            "not present in both tables", zName);
          return 1;
        }
        addWhereTerm(pParse, pSrc, i, iLeftCol, iRightCol, isOuter, &p->pWhere);


      }
    }
  }
  return 0;
}

/*
84627
84628
84629
84630
84631
84632
84633
84634
84635
84636
84637
84638
84639
84640
84641
84642
84643
84644
84645
84646
84647
84648
84649
84650
84651
84652
  sqlite3 *db = pParse->db; /* Database connection */
  const char *pVTab = (const char*)sqlite3GetVTable(db, pTab);
  SelectDest dest;

  /* Construct the SELECT statement that will find the new values for
  ** all updated rows. 
  */
  pEList = sqlite3ExprListAppend(pParse, 0, 
                                 sqlite3CreateIdExpr(pParse, "_rowid_"));
  if( pRowid ){
    pEList = sqlite3ExprListAppend(pParse, pEList,
                                   sqlite3ExprDup(db, pRowid, 0));
  }
  assert( pTab->iPKey<0 );
  for(i=0; i<pTab->nCol; i++){
    if( aXRef[i]>=0 ){
      pExpr = sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0);
    }else{
      pExpr = sqlite3CreateIdExpr(pParse, pTab->aCol[i].zName);
    }
    pEList = sqlite3ExprListAppend(pParse, pEList, pExpr);
  }
  pSelect = sqlite3SelectNew(pParse, pEList, pSrc, pWhere, 0, 0, 0, 0, 0, 0);
  
  /* Create the ephemeral table into which the update results will
  ** be stored.







|
<









|







84755
84756
84757
84758
84759
84760
84761
84762

84763
84764
84765
84766
84767
84768
84769
84770
84771
84772
84773
84774
84775
84776
84777
84778
84779
  sqlite3 *db = pParse->db; /* Database connection */
  const char *pVTab = (const char*)sqlite3GetVTable(db, pTab);
  SelectDest dest;

  /* Construct the SELECT statement that will find the new values for
  ** all updated rows. 
  */
  pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ID, "_rowid_"));

  if( pRowid ){
    pEList = sqlite3ExprListAppend(pParse, pEList,
                                   sqlite3ExprDup(db, pRowid, 0));
  }
  assert( pTab->iPKey<0 );
  for(i=0; i<pTab->nCol; i++){
    if( aXRef[i]>=0 ){
      pExpr = sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0);
    }else{
      pExpr = sqlite3Expr(db, TK_ID, pTab->aCol[i].zName);
    }
    pEList = sqlite3ExprListAppend(pParse, pEList, pExpr);
  }
  pSelect = sqlite3SelectNew(pParse, pEList, pSrc, pWhere, 0, 0, 0, 0, 0, 0);
  
  /* Create the ephemeral table into which the update results will
  ** be stored.
84808
84809
84810
84811
84812
84813
84814






84815
84816
84817
84818
84819
84820
84821
  */
  zSql = "ATTACH '' AS vacuum_db;";
  rc = execSql(db, zSql);
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  pDb = &db->aDb[db->nDb-1];
  assert( strcmp(db->aDb[db->nDb-1].zName,"vacuum_db")==0 );
  pTemp = db->aDb[db->nDb-1].pBt;







  nRes = sqlite3BtreeGetReserve(pMain);

  /* A VACUUM cannot change the pagesize of an encrypted database. */
#ifdef SQLITE_HAS_CODEC
  if( db->nextPagesize ){
    extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*);







>
>
>
>
>
>







84935
84936
84937
84938
84939
84940
84941
84942
84943
84944
84945
84946
84947
84948
84949
84950
84951
84952
84953
84954
  */
  zSql = "ATTACH '' AS vacuum_db;";
  rc = execSql(db, zSql);
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  pDb = &db->aDb[db->nDb-1];
  assert( strcmp(db->aDb[db->nDb-1].zName,"vacuum_db")==0 );
  pTemp = db->aDb[db->nDb-1].pBt;

  /* The call to execSql() to attach the temp database has left the file
  ** locked (as there was more than one active statement when the transaction
  ** to read the schema was concluded. Unlock it here so that this doesn't
  ** cause problems for the call to BtreeSetPageSize() below.  */
  sqlite3BtreeCommit(pTemp);

  nRes = sqlite3BtreeGetReserve(pMain);

  /* A VACUUM cannot change the pagesize of an encrypted database. */
#ifdef SQLITE_HAS_CODEC
  if( db->nextPagesize ){
    extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*);
84862
84863
84864
84865
84866
84867
84868
84869
84870
84871
84872
84873
84874
84875
84876
84877
84878
84879
84880
84881
84882
84883
84884
84885
84886
84887
84888
84889
84890
84891
84892
84893
84894
84895
84896
84897
84898
84899
84900
84901
84902
84903
84904
84905
84906
84907
84908
84909
84910
84911
84912
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execExecSql(db, 
      "SELECT 'CREATE UNIQUE INDEX vacuum_db.' || substr(sql,21) "
      "  FROM sqlite_master WHERE sql LIKE 'CREATE UNIQUE INDEX %'");
  if( rc!=SQLITE_OK ) goto end_of_vacuum;

  /* Loop through the tables in the main database. For each, do
  ** an "INSERT INTO vacuum_db.xxx SELECT * FROM xxx;" to copy
  ** the contents to the temporary database.
  */
  rc = execExecSql(db, 
      "SELECT 'INSERT INTO vacuum_db.' || quote(name) "
      "|| ' SELECT * FROM ' || quote(name) || ';'"
      "FROM sqlite_master "
      "WHERE type = 'table' AND name!='sqlite_sequence' "
      "  AND rootpage>0"

  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;

  /* Copy over the sequence table
  */
  rc = execExecSql(db, 
      "SELECT 'DELETE FROM vacuum_db.' || quote(name) || ';' "
      "FROM vacuum_db.sqlite_master WHERE name='sqlite_sequence' "
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execExecSql(db, 
      "SELECT 'INSERT INTO vacuum_db.' || quote(name) "
      "|| ' SELECT * FROM ' || quote(name) || ';' "
      "FROM vacuum_db.sqlite_master WHERE name=='sqlite_sequence';"
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;


  /* Copy the triggers, views, and virtual tables from the main database
  ** over to the temporary database.  None of these objects has any
  ** associated storage, so all we have to do is copy their entries
  ** from the SQLITE_MASTER table.
  */
  rc = execSql(db,
      "INSERT INTO vacuum_db.sqlite_master "
      "  SELECT type, name, tbl_name, rootpage, sql"
      "    FROM sqlite_master"
      "   WHERE type='view' OR type='trigger'"
      "      OR (type='table' AND rootpage=0)"
  );
  if( rc ) goto end_of_vacuum;

  /* At this point, unless the main db was completely empty, there is now a
  ** transaction open on the vacuum database, but not on the main database.







|




|
|















|













|







84995
84996
84997
84998
84999
85000
85001
85002
85003
85004
85005
85006
85007
85008
85009
85010
85011
85012
85013
85014
85015
85016
85017
85018
85019
85020
85021
85022
85023
85024
85025
85026
85027
85028
85029
85030
85031
85032
85033
85034
85035
85036
85037
85038
85039
85040
85041
85042
85043
85044
85045
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execExecSql(db, 
      "SELECT 'CREATE UNIQUE INDEX vacuum_db.' || substr(sql,21) "
      "  FROM sqlite_master WHERE sql LIKE 'CREATE UNIQUE INDEX %'");
  if( rc!=SQLITE_OK ) goto end_of_vacuum;

  /* Loop through the tables in the main database. For each, do
  ** an "INSERT INTO vacuum_db.xxx SELECT * FROM main.xxx;" to copy
  ** the contents to the temporary database.
  */
  rc = execExecSql(db, 
      "SELECT 'INSERT INTO vacuum_db.' || quote(name) "
      "|| ' SELECT * FROM main.' || quote(name) || ';'"
      "FROM main.sqlite_master "
      "WHERE type = 'table' AND name!='sqlite_sequence' "
      "  AND rootpage>0"

  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;

  /* Copy over the sequence table
  */
  rc = execExecSql(db, 
      "SELECT 'DELETE FROM vacuum_db.' || quote(name) || ';' "
      "FROM vacuum_db.sqlite_master WHERE name='sqlite_sequence' "
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execExecSql(db, 
      "SELECT 'INSERT INTO vacuum_db.' || quote(name) "
      "|| ' SELECT * FROM main.' || quote(name) || ';' "
      "FROM vacuum_db.sqlite_master WHERE name=='sqlite_sequence';"
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;


  /* Copy the triggers, views, and virtual tables from the main database
  ** over to the temporary database.  None of these objects has any
  ** associated storage, so all we have to do is copy their entries
  ** from the SQLITE_MASTER table.
  */
  rc = execSql(db,
      "INSERT INTO vacuum_db.sqlite_master "
      "  SELECT type, name, tbl_name, rootpage, sql"
      "    FROM main.sqlite_master"
      "   WHERE type='view' OR type='trigger'"
      "      OR (type='table' AND rootpage=0)"
  );
  if( rc ) goto end_of_vacuum;

  /* At this point, unless the main db was completely empty, there is now a
  ** transaction open on the vacuum database, but not on the main database.
86572
86573
86574
86575
86576
86577
86578
86579
86580
86581
86582
86583
86584
86585
86586
86587
86588
86589
86590


86591
86592
86593
86594
86595
86596
86597
86598
86599
86600
86601
86602
86603
86604


86605
86606

86607
86608
86609
86610
86611







86612
86613
86614














86615

86616
86617
86618
86619
86620
86621

86622


86623
















86624

86625
86626


86627
86628
86629
86630
86631
86632
86633
86634
**
** In order for the operator to be optimizible, the RHS must be a string
** literal that does not begin with a wildcard.  
*/
static int isLikeOrGlob(
  Parse *pParse,    /* Parsing and code generating context */
  Expr *pExpr,      /* Test this expression */
  int *pnPattern,   /* Number of non-wildcard prefix characters */
  int *pisComplete, /* True if the only wildcard is % in the last character */
  int *pnoCase      /* True if uppercase is equivalent to lowercase */
){
  const char *z;             /* String on RHS of LIKE operator */
  Expr *pRight, *pLeft;      /* Right and left size of LIKE operator */
  ExprList *pList;           /* List of operands to the LIKE operator */
  int c;                     /* One character in z[] */
  int cnt;                   /* Number of non-wildcard prefix characters */
  char wc[3];                /* Wildcard characters */
  CollSeq *pColl;            /* Collating sequence for LHS */
  sqlite3 *db = pParse->db;  /* Database connection */



  if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){
    return 0;
  }
#ifdef SQLITE_EBCDIC
  if( *pnoCase ) return 0;
#endif
  pList = pExpr->x.pList;
  pRight = pList->a[0].pExpr;
  if( pRight->op!=TK_STRING ){
    return 0;
  }
  pLeft = pList->a[1].pExpr;
  if( pLeft->op!=TK_COLUMN ){


    return 0;
  }

  pColl = sqlite3ExprCollSeq(pParse, pLeft);
  assert( pColl!=0 || pLeft->iColumn==-1 );
  if( pColl==0 ) return 0;
  if( (pColl->type!=SQLITE_COLL_BINARY || *pnoCase) &&
      (pColl->type!=SQLITE_COLL_NOCASE || !*pnoCase) ){







    return 0;
  }
  if( sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT ) return 0;














  z = pRight->u.zToken;

  if( ALWAYS(z) ){
    cnt = 0;
    while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){
      cnt++;
    }
    if( cnt!=0 && c!=0 && 255!=(u8)z[cnt-1] ){

      *pisComplete = z[cnt]==wc[0] && z[cnt+1]==0;


      *pnPattern = cnt;
















      return 1;

    }
  }


  return 0;
}
#endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */


#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Check to see if the given expression is of the form







|



|







>
>








<
<
<
<

|
>
>


>

|
<


>
>
>
>
>
>
>


|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
>
|





>

>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
>


>
>
|







86705
86706
86707
86708
86709
86710
86711
86712
86713
86714
86715
86716
86717
86718
86719
86720
86721
86722
86723
86724
86725
86726
86727
86728
86729
86730
86731
86732
86733




86734
86735
86736
86737
86738
86739
86740
86741
86742

86743
86744
86745
86746
86747
86748
86749
86750
86751
86752
86753
86754
86755
86756
86757
86758
86759
86760
86761
86762
86763
86764
86765
86766
86767
86768
86769
86770
86771
86772
86773
86774
86775
86776
86777
86778
86779
86780
86781
86782
86783
86784
86785
86786
86787
86788
86789
86790
86791
86792
86793
86794
86795
86796
86797
86798
86799
86800
86801
86802
86803
86804
86805
86806
86807
86808
86809
86810
86811
**
** In order for the operator to be optimizible, the RHS must be a string
** literal that does not begin with a wildcard.  
*/
static int isLikeOrGlob(
  Parse *pParse,    /* Parsing and code generating context */
  Expr *pExpr,      /* Test this expression */
  Expr **ppPrefix,  /* Pointer to TK_STRING expression with pattern prefix */
  int *pisComplete, /* True if the only wildcard is % in the last character */
  int *pnoCase      /* True if uppercase is equivalent to lowercase */
){
  const char *z = 0;         /* String on RHS of LIKE operator */
  Expr *pRight, *pLeft;      /* Right and left size of LIKE operator */
  ExprList *pList;           /* List of operands to the LIKE operator */
  int c;                     /* One character in z[] */
  int cnt;                   /* Number of non-wildcard prefix characters */
  char wc[3];                /* Wildcard characters */
  CollSeq *pColl;            /* Collating sequence for LHS */
  sqlite3 *db = pParse->db;  /* Database connection */
  sqlite3_value *pVal = 0;
  int op;                    /* Opcode of pRight */

  if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){
    return 0;
  }
#ifdef SQLITE_EBCDIC
  if( *pnoCase ) return 0;
#endif
  pList = pExpr->x.pList;




  pLeft = pList->a[1].pExpr;
  if( pLeft->op!=TK_COLUMN || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT ){
    /* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
    ** be the name of an indexed column with TEXT affinity. */
    return 0;
  }
  assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */
  pColl = sqlite3ExprCollSeq(pParse, pLeft);
  assert( pColl!=0 );  /* Every non-IPK column has a collating sequence */

  if( (pColl->type!=SQLITE_COLL_BINARY || *pnoCase) &&
      (pColl->type!=SQLITE_COLL_NOCASE || !*pnoCase) ){
    /* IMP: R-09003-32046 For the GLOB operator, the column must use the
    ** default BINARY collating sequence.
    ** IMP: R-41408-28306 For the LIKE operator, if case_sensitive_like mode
    ** is enabled then the column must use the default BINARY collating
    ** sequence, or if case_sensitive_like mode is disabled then the column
    ** must use the built-in NOCASE collating sequence.
    */
    return 0;
  }

  pRight = pList->a[0].pExpr;
  op = pRight->op;
  if( op==TK_REGISTER ){
    op = pRight->op2;
  }
  if( op==TK_VARIABLE ){
    Vdbe *pReprepare = pParse->pReprepare;
    pVal = sqlite3VdbeGetValue(pReprepare, pRight->iColumn, SQLITE_AFF_NONE);
    if( pVal && sqlite3_value_type(pVal)==SQLITE_TEXT ){
      z = (char *)sqlite3_value_text(pVal);
    }
    sqlite3VdbeSetVarmask(pParse->pVdbe, pRight->iColumn);
    assert( pRight->op==TK_VARIABLE || pRight->op==TK_REGISTER );
  }else if( op==TK_STRING ){
    z = pRight->u.zToken;
  }
  if( z ){
    cnt = 0;
    while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){
      cnt++;
    }
    if( cnt!=0 && c!=0 && 255!=(u8)z[cnt-1] ){
      Expr *pPrefix;
      *pisComplete = z[cnt]==wc[0] && z[cnt+1]==0;
      pPrefix = sqlite3Expr(db, TK_STRING, z);
      if( pPrefix ) pPrefix->u.zToken[cnt] = 0;
      *ppPrefix = pPrefix;
      if( op==TK_VARIABLE ){
        Vdbe *v = pParse->pVdbe;
        sqlite3VdbeSetVarmask(v, pRight->iColumn);
        if( *pisComplete && pRight->u.zToken[1] ){
          /* If the rhs of the LIKE expression is a variable, and the current
          ** value of the variable means there is no need to invoke the LIKE
          ** function, then no OP_Variable will be added to the program.
          ** This causes problems for the sqlite3_bind_parameter_name()
          ** API. To workaround them, add a dummy OP_Variable here.
          */ 
          int r1 = sqlite3GetTempReg(pParse);
          sqlite3ExprCodeTarget(pParse, pRight, r1);
          sqlite3VdbeChangeP3(v, sqlite3VdbeCurrentAddr(v)-1, 0);
          sqlite3ReleaseTempReg(pParse, r1);
        }
      }
    }else{
      z = 0;
    }
  }

  sqlite3ValueFree(pVal);
  return (z!=0);
}
#endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */


#ifndef SQLITE_OMIT_VIRTUALTABLE
/*
** Check to see if the given expression is of the form
87001
87002
87003
87004
87005
87006
87007
87008
87009
87010
87011
87012
87013
87014
87015
87016
87017
87018
  int idxTerm               /* Index of the term to be analyzed */
){
  WhereTerm *pTerm;                /* The term to be analyzed */
  WhereMaskSet *pMaskSet;          /* Set of table index masks */
  Expr *pExpr;                     /* The expression to be analyzed */
  Bitmask prereqLeft;              /* Prerequesites of the pExpr->pLeft */
  Bitmask prereqAll;               /* Prerequesites of pExpr */
  Bitmask extraRight = 0;
  int nPattern;
  int isComplete;
  int noCase;
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWC->pParse;     /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */

  if( db->mallocFailed ){
    return;
  }







|
|
|
|







87178
87179
87180
87181
87182
87183
87184
87185
87186
87187
87188
87189
87190
87191
87192
87193
87194
87195
  int idxTerm               /* Index of the term to be analyzed */
){
  WhereTerm *pTerm;                /* The term to be analyzed */
  WhereMaskSet *pMaskSet;          /* Set of table index masks */
  Expr *pExpr;                     /* The expression to be analyzed */
  Bitmask prereqLeft;              /* Prerequesites of the pExpr->pLeft */
  Bitmask prereqAll;               /* Prerequesites of pExpr */
  Bitmask extraRight = 0;          /* */
  Expr *pStr1 = 0;                 /* RHS of LIKE/GLOB operator */
  int isComplete = 0;              /* RHS of LIKE/GLOB ends with wildcard */
  int noCase = 0;                  /* LIKE/GLOB distinguishes case */
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWC->pParse;     /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */

  if( db->mallocFailed ){
    return;
  }
87139
87140
87141
87142
87143
87144
87145
87146
87147


87148

87149
87150
87151

87152
87153
87154
87155
87156
87157
87158
87159
87160
87161
87162
87163
87164
87165
87166
87167
  ** A like pattern of the form "x LIKE 'abc%'" is changed into constraints
  **
  **          x>='abc' AND x<'abd' AND x LIKE 'abc%'
  **
  ** The last character of the prefix "abc" is incremented to form the
  ** termination condition "abd".
  */
  if( isLikeOrGlob(pParse, pExpr, &nPattern, &isComplete, &noCase)
         && pWC->op==TK_AND ){


    Expr *pLeft, *pRight;

    Expr *pStr1, *pStr2;
    Expr *pNewExpr1, *pNewExpr2;
    int idxNew1, idxNew2;


    pLeft = pExpr->x.pList->a[1].pExpr;
    pRight = pExpr->x.pList->a[0].pExpr;
    pStr1 = sqlite3Expr(db, TK_STRING, pRight->u.zToken);
    if( pStr1 ) pStr1->u.zToken[nPattern] = 0;
    pStr2 = sqlite3ExprDup(db, pStr1, 0);
    if( !db->mallocFailed ){
      u8 c, *pC;       /* Last character before the first wildcard */
      pC = (u8*)&pStr2->u.zToken[nPattern-1];
      c = *pC;
      if( noCase ){
        /* The point is to increment the last character before the first
        ** wildcard.  But if we increment '@', that will push it into the
        ** alphabetic range where case conversions will mess up the 
        ** inequality.  To avoid this, make sure to also run the full
        ** LIKE on all candidate expressions by clearing the isComplete flag







<
|
>
>
|
>
|
|
|
>


<
<
<



|







87316
87317
87318
87319
87320
87321
87322

87323
87324
87325
87326
87327
87328
87329
87330
87331
87332
87333



87334
87335
87336
87337
87338
87339
87340
87341
87342
87343
87344
  ** A like pattern of the form "x LIKE 'abc%'" is changed into constraints
  **
  **          x>='abc' AND x<'abd' AND x LIKE 'abc%'
  **
  ** The last character of the prefix "abc" is incremented to form the
  ** termination condition "abd".
  */

  if( pWC->op==TK_AND 
   && isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase)
  ){
    Expr *pLeft;       /* LHS of LIKE/GLOB operator */
    Expr *pStr2;       /* Copy of pStr1 - RHS of LIKE/GLOB operator */
    Expr *pNewExpr1;
    Expr *pNewExpr2;
    int idxNew1;
    int idxNew2;

    pLeft = pExpr->x.pList->a[1].pExpr;



    pStr2 = sqlite3ExprDup(db, pStr1, 0);
    if( !db->mallocFailed ){
      u8 c, *pC;       /* Last character before the first wildcard */
      pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1];
      c = *pC;
      if( noCase ){
        /* The point is to increment the last character before the first
        ** wildcard.  But if we increment '@', that will push it into the
        ** alphabetic range where case conversions will mess up the 
        ** inequality.  To avoid this, make sure to also run the full
        ** LIKE on all candidate expressions by clearing the isComplete flag
87931
87932
87933
87934
87935
87936
87937




































87938
87939
87940
87941
87942
87943
87944
    assert( i>=0 && i<=SQLITE_INDEX_SAMPLES );
    *piRegion = i;
  }
  return SQLITE_OK;
}
#endif   /* #ifdef SQLITE_ENABLE_STAT2 */





































/*
** 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):
**







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







88108
88109
88110
88111
88112
88113
88114
88115
88116
88117
88118
88119
88120
88121
88122
88123
88124
88125
88126
88127
88128
88129
88130
88131
88132
88133
88134
88135
88136
88137
88138
88139
88140
88141
88142
88143
88144
88145
88146
88147
88148
88149
88150
88151
88152
88153
88154
88155
88156
88157
    assert( i>=0 && i<=SQLITE_INDEX_SAMPLES );
    *piRegion = i;
  }
  return SQLITE_OK;
}
#endif   /* #ifdef SQLITE_ENABLE_STAT2 */

/*
** If expression pExpr represents a literal value, set *pp to point to
** an sqlite3_value structure containing the same value, with affinity
** aff applied to it, before returning. It is the responsibility of the 
** caller to eventually release this structure by passing it to 
** sqlite3ValueFree().
**
** If the current parse is a recompile (sqlite3Reprepare()) and pExpr
** is an SQL variable that currently has a non-NULL value bound to it,
** create an sqlite3_value structure containing this value, again with
** affinity aff applied to it, instead.
**
** If neither of the above apply, set *pp to NULL.
**
** If an error occurs, return an error code. Otherwise, SQLITE_OK.
*/
#ifdef SQLITE_ENABLE_STAT2
static int valueFromExpr(
  Parse *pParse, 
  Expr *pExpr, 
  u8 aff, 
  sqlite3_value **pp
){
  /* The evalConstExpr() function will have already converted any TK_VARIABLE
  ** expression involved in an comparison into a TK_REGISTER. */
  assert( pExpr->op!=TK_VARIABLE );
  if( pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE ){
    int iVar = pExpr->iColumn;
    sqlite3VdbeSetVarmask(pParse->pVdbe, iVar);
    *pp = sqlite3VdbeGetValue(pParse->pReprepare, iVar, aff);
    return SQLITE_OK;
  }
  return sqlite3ValueFromExpr(pParse->db, pExpr, SQLITE_UTF8, aff, pp);
}
#endif

/*
** 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):
**
87983
87984
87985
87986
87987
87988
87989
87990

87991
87992
87993
87994
87995
87996
87997
87998
87999
88000
88001
88002
88003
88004
88005
88006
88007
88008
88009
88010
88011
88012
88013
  WhereTerm *pLower,   /* Lower bound on the range. ex: "x>123" Might be NULL */
  WhereTerm *pUpper,   /* Upper bound on the range. ex: "x<455" Might be NULL */
  int *piEst           /* OUT: Return value */
){
  int rc = SQLITE_OK;

#ifdef SQLITE_ENABLE_STAT2
  sqlite3 *db = pParse->db;

  sqlite3_value *pLowerVal = 0;
  sqlite3_value *pUpperVal = 0;

  if( nEq==0 && p->aSample ){
    int iEst;
    int iLower = 0;
    int iUpper = SQLITE_INDEX_SAMPLES;
    u8 aff = p->pTable->aCol[0].affinity;

    if( pLower ){
      Expr *pExpr = pLower->pExpr->pRight;
      rc = sqlite3ValueFromExpr(db, pExpr, SQLITE_UTF8, aff, &pLowerVal);
    }
    if( rc==SQLITE_OK && pUpper ){
      Expr *pExpr = pUpper->pExpr->pRight;
      rc = sqlite3ValueFromExpr(db, pExpr, SQLITE_UTF8, aff, &pUpperVal);
    }

    if( rc!=SQLITE_OK || (pLowerVal==0 && pUpperVal==0) ){
      sqlite3ValueFree(pLowerVal);
      sqlite3ValueFree(pUpperVal);
      goto range_est_fallback;
    }else if( pLowerVal==0 ){







|
>
|
|
<
<



|



|



|







88196
88197
88198
88199
88200
88201
88202
88203
88204
88205
88206


88207
88208
88209
88210
88211
88212
88213
88214
88215
88216
88217
88218
88219
88220
88221
88222
88223
88224
88225
  WhereTerm *pLower,   /* Lower bound on the range. ex: "x>123" Might be NULL */
  WhereTerm *pUpper,   /* Upper bound on the range. ex: "x<455" Might be NULL */
  int *piEst           /* OUT: Return value */
){
  int rc = SQLITE_OK;

#ifdef SQLITE_ENABLE_STAT2

  if( nEq==0 && p->aSample ){
    sqlite3_value *pLowerVal = 0;
    sqlite3_value *pUpperVal = 0;


    int iEst;
    int iLower = 0;
    int iUpper = SQLITE_INDEX_SAMPLES;
    u8 aff = p->pTable->aCol[p->aiColumn[0]].affinity;

    if( pLower ){
      Expr *pExpr = pLower->pExpr->pRight;
      rc = valueFromExpr(pParse, pExpr, aff, &pLowerVal);
    }
    if( rc==SQLITE_OK && pUpper ){
      Expr *pExpr = pUpper->pExpr->pRight;
      rc = valueFromExpr(pParse, pExpr, aff, &pUpperVal);
    }

    if( rc!=SQLITE_OK || (pLowerVal==0 && pUpperVal==0) ){
      sqlite3ValueFree(pLowerVal);
      sqlite3ValueFree(pUpperVal);
      goto range_est_fallback;
    }else if( pLowerVal==0 ){
92004
92005
92006
92007
92008
92009
92010
92011
92012
92013
92014
92015
92016
92017
92018
92019
92020
92021
92022
92023
92024
92025
92026
92027
92028
92029
92030
92031
92032
92033
92034
92035
92036
92037
92038
92039
92040
92041
92042
92043
92044
92045
      case 68: /* ccons ::= defer_subclause */
{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy412);}
        break;
      case 69: /* ccons ::= COLLATE ids */
{sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);}
        break;
      case 72: /* refargs ::= */
{ yygotominor.yy412 = OE_None * 0x000101; }
        break;
      case 73: /* refargs ::= refargs refarg */
{ yygotominor.yy412 = (yymsp[-1].minor.yy412 & ~yymsp[0].minor.yy47.mask) | yymsp[0].minor.yy47.value; }
        break;
      case 74: /* refarg ::= MATCH nm */
{ yygotominor.yy47.value = 0;     yygotominor.yy47.mask = 0x000000; }
        break;
      case 75: /* refarg ::= ON DELETE refact */
{ yygotominor.yy47.value = yymsp[0].minor.yy412;     yygotominor.yy47.mask = 0x0000ff; }
        break;
      case 76: /* refarg ::= ON UPDATE refact */
{ yygotominor.yy47.value = yymsp[0].minor.yy412<<8;  yygotominor.yy47.mask = 0x00ff00; }
        break;
      case 77: /* refact ::= SET NULL */
{ yygotominor.yy412 = OE_SetNull; }
        break;
      case 78: /* refact ::= SET DEFAULT */
{ yygotominor.yy412 = OE_SetDflt; }
        break;
      case 79: /* refact ::= CASCADE */
{ yygotominor.yy412 = OE_Cascade; }
        break;
      case 80: /* refact ::= RESTRICT */
{ yygotominor.yy412 = OE_Restrict; }
        break;
      case 81: /* refact ::= NO ACTION */
{ yygotominor.yy412 = OE_None; }
        break;
      case 83: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
      case 98: /* defer_subclause_opt ::= defer_subclause */ yytestcase(yyruleno==98);
      case 100: /* onconf ::= ON CONFLICT resolvetype */ yytestcase(yyruleno==100);
      case 103: /* resolvetype ::= raisetype */ yytestcase(yyruleno==103);
{yygotominor.yy412 = yymsp[0].minor.yy412;}
        break;







|














|


|


|


|


|







92216
92217
92218
92219
92220
92221
92222
92223
92224
92225
92226
92227
92228
92229
92230
92231
92232
92233
92234
92235
92236
92237
92238
92239
92240
92241
92242
92243
92244
92245
92246
92247
92248
92249
92250
92251
92252
92253
92254
92255
92256
92257
      case 68: /* ccons ::= defer_subclause */
{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy412);}
        break;
      case 69: /* ccons ::= COLLATE ids */
{sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);}
        break;
      case 72: /* refargs ::= */
{ yygotominor.yy412 = OE_None*0x0101; /* EV: R-19803-45884 */}
        break;
      case 73: /* refargs ::= refargs refarg */
{ yygotominor.yy412 = (yymsp[-1].minor.yy412 & ~yymsp[0].minor.yy47.mask) | yymsp[0].minor.yy47.value; }
        break;
      case 74: /* refarg ::= MATCH nm */
{ yygotominor.yy47.value = 0;     yygotominor.yy47.mask = 0x000000; }
        break;
      case 75: /* refarg ::= ON DELETE refact */
{ yygotominor.yy47.value = yymsp[0].minor.yy412;     yygotominor.yy47.mask = 0x0000ff; }
        break;
      case 76: /* refarg ::= ON UPDATE refact */
{ yygotominor.yy47.value = yymsp[0].minor.yy412<<8;  yygotominor.yy47.mask = 0x00ff00; }
        break;
      case 77: /* refact ::= SET NULL */
{ yygotominor.yy412 = OE_SetNull;  /* EV: R-33326-45252 */}
        break;
      case 78: /* refact ::= SET DEFAULT */
{ yygotominor.yy412 = OE_SetDflt;  /* EV: R-33326-45252 */}
        break;
      case 79: /* refact ::= CASCADE */
{ yygotominor.yy412 = OE_Cascade;  /* EV: R-33326-45252 */}
        break;
      case 80: /* refact ::= RESTRICT */
{ yygotominor.yy412 = OE_Restrict; /* EV: R-33326-45252 */}
        break;
      case 81: /* refact ::= NO ACTION */
{ yygotominor.yy412 = OE_None;     /* EV: R-33326-45252 */}
        break;
      case 83: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
      case 98: /* defer_subclause_opt ::= defer_subclause */ yytestcase(yyruleno==98);
      case 100: /* onconf ::= ON CONFLICT resolvetype */ yytestcase(yyruleno==100);
      case 103: /* resolvetype ::= raisetype */ yytestcase(yyruleno==103);
{yygotominor.yy412 = yymsp[0].minor.yy412;}
        break;
95694
95695
95696
95697
95698
95699
95700
95701
95702
95703
95704
95705
95706
95707
95708
95709
#endif
#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>30
# error SQLITE_MAX_ATTACHED must be between 0 and 30
#endif
#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1
# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1
#endif
#if SQLITE_MAX_VARIABLE_NUMBER<1
# error SQLITE_MAX_VARIABLE_NUMBER must be at least 1
#endif
#if SQLITE_MAX_COLUMN>32767
# error SQLITE_MAX_COLUMN must not exceed 32767
#endif
#if SQLITE_MAX_TRIGGER_DEPTH<1
# error SQLITE_MAX_TRIGGER_DEPTH must be at least 1
#endif







|
|







95906
95907
95908
95909
95910
95911
95912
95913
95914
95915
95916
95917
95918
95919
95920
95921
#endif
#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>30
# error SQLITE_MAX_ATTACHED must be between 0 and 30
#endif
#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1
# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1
#endif
#if SQLITE_MAX_VARIABLE_NUMBER<1 || SQLITE_MAX_VARIABLE_NUMBER>32767
# error SQLITE_MAX_VARIABLE_NUMBER must be between 1 and 32767
#endif
#if SQLITE_MAX_COLUMN>32767
# error SQLITE_MAX_COLUMN must not exceed 32767
#endif
#if SQLITE_MAX_TRIGGER_DEPTH<1
# error SQLITE_MAX_TRIGGER_DEPTH must be at least 1
#endif
Changes to src/sqlite3.h.
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
**
** Requirements: [H10011] [H10014]
*/
#define SQLITE_VERSION        "3.6.19"
#define SQLITE_VERSION_NUMBER 3006019
#define SQLITE_SOURCE_ID      "2009-10-13 22:47:14 ac19dbc6a208be2313e47cbcc0b2a0d8d04bae4c"

/*
** CAPI3REF: Run-Time Library Version Numbers {H10020} <S60100>
** KEYWORDS: sqlite3_version
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] #defines in the header,







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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
**
** Requirements: [H10011] [H10014]
*/
#define SQLITE_VERSION        "3.6.20"
#define SQLITE_VERSION_NUMBER 3006020
#define SQLITE_SOURCE_ID      "2009-11-02 17:40:08 f19cb105d929f0a56f9597b6eb33ad96d0f7eddc"

/*
** CAPI3REF: Run-Time Library Version Numbers {H10020} <S60100>
** KEYWORDS: sqlite3_version
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] #defines in the header,
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#endif

/*
** CAPI3REF: Closing A Database Connection {H12010} <S30100><S40200>
**
** This routine is the destructor for the [sqlite3] object.
**
** Applications should [sqlite3_finalize | finalize] all [prepared statements]
** and [sqlite3_blob_close | close] all [BLOB handles] associated with
** the [sqlite3] object prior to attempting to close the object.
** The [sqlite3_next_stmt()] interface can be used to locate all
** [prepared statements] associated with a [database connection] if desired.
** Typical code might look like this:
**
** <blockquote><pre>
** sqlite3_stmt *pStmt;
** while( (pStmt = sqlite3_next_stmt(db, 0))!=0 ){
** &nbsp;   sqlite3_finalize(pStmt);
** }
** </pre></blockquote>
**
** If [sqlite3_close()] is invoked while a transaction is open,
** the transaction is automatically rolled back.
**
** The C parameter to [sqlite3_close(C)] must be either a NULL
** pointer or an [sqlite3] object pointer obtained
** from [sqlite3_open()], [sqlite3_open16()], or







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#endif

/*
** CAPI3REF: Closing A Database Connection {H12010} <S30100><S40200>
**
** This routine is the destructor for the [sqlite3] object.
**
** Applications must [sqlite3_finalize | finalize] all [prepared statements]
** and [sqlite3_blob_close | close] all [BLOB handles] associated with
** the [sqlite3] object prior to attempting to close the object.










**
** If [sqlite3_close()] is invoked while a transaction is open,
** the transaction is automatically rolled back.
**
** The C parameter to [sqlite3_close(C)] must be either a NULL
** pointer or an [sqlite3] object pointer obtained
** from [sqlite3_open()], [sqlite3_open16()], or
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/*
** CAPI3REF: Initialize The SQLite Library {H10130} <S20000><S30100>
**
** The sqlite3_initialize() routine initializes the
** SQLite library.  The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().



**
** A call to sqlite3_initialize() is an "effective" call if it is
** the first time sqlite3_initialize() is invoked during the lifetime of
** the process, or if it is the first time sqlite3_initialize() is invoked
** following a call to sqlite3_shutdown().  Only an effective call
** of sqlite3_initialize() does any initialization.  All other calls
** are harmless no-ops.
**
** A call to sqlite3_shutdown() is an "effective" call if it is the first
** call to sqlite3_shutdown() since the last sqlite3_initialize().  Only
** an effective call to sqlite3_shutdown() does any deinitialization.
** All other calls to sqlite3_shutdown() are harmless no-ops.
**






** Among other things, sqlite3_initialize() shall invoke
** sqlite3_os_init().  Similarly, sqlite3_shutdown()
** shall invoke sqlite3_os_end().
**
** The sqlite3_initialize() routine returns [SQLITE_OK] on success.
** If for some reason, sqlite3_initialize() is unable to initialize
** the library (perhaps it is unable to allocate a needed resource such
** as a mutex) it returns an [error code] other than [SQLITE_OK].
**
** The sqlite3_initialize() routine is called internally by many other







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/*
** CAPI3REF: Initialize The SQLite Library {H10130} <S20000><S30100>
**
** The sqlite3_initialize() routine initializes the
** SQLite library.  The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().
** This routines are designed to aid in process initialization and
** shutdown on embedded systems.  Workstation applications using
** SQLite normally do not need to invoke either of these routines.
**
** A call to sqlite3_initialize() is an "effective" call if it is
** the first time sqlite3_initialize() is invoked during the lifetime of
** the process, or if it is the first time sqlite3_initialize() is invoked
** following a call to sqlite3_shutdown().  Only an effective call
** of sqlite3_initialize() does any initialization.  All other calls
** are harmless no-ops.
**
** A call to sqlite3_shutdown() is an "effective" call if it is the first
** call to sqlite3_shutdown() since the last sqlite3_initialize().  Only
** an effective call to sqlite3_shutdown() does any deinitialization.
** All other valid calls to sqlite3_shutdown() are harmless no-ops.
**
** The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown()
** is not.  The sqlite3_shutdown() interface must only be called from a
** single thread.  All open [database connections] must be closed and all
** other SQLite resources must be deallocated prior to invoking
** sqlite3_shutdown().
**
** Among other things, sqlite3_initialize() will invoke
** sqlite3_os_init().  Similarly, sqlite3_shutdown()
** will invoke sqlite3_os_end().
**
** The sqlite3_initialize() routine returns [SQLITE_OK] on success.
** If for some reason, sqlite3_initialize() is unable to initialize
** the library (perhaps it is unable to allocate a needed resource such
** as a mutex) it returns an [error code] other than [SQLITE_OK].
**
** The sqlite3_initialize() routine is called internally by many other
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** Requirements:
** [H12762] [H12766] [H12769]
*/
SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);

/*
** CAPI3REF: Run-Time Limit Categories {H12790} <H12760>
** KEYWORDS: {limit category} {limit categories}
**
** These constants define various performance limits
** that can be lowered at run-time using [sqlite3_limit()].
** The synopsis of the meanings of the various limits is shown below.
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>







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** Requirements:
** [H12762] [H12766] [H12769]
*/
SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);

/*
** CAPI3REF: Run-Time Limit Categories {H12790} <H12760>
** KEYWORDS: {limit category} {*limit categories}
**
** These constants define various performance limits
** that can be lowered at run-time using [sqlite3_limit()].
** The synopsis of the meanings of the various limits is shown below.
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
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**
** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
** recommended for all new programs. The two older interfaces are retained
** for backwards compatibility, but their use is discouraged.
** In the "v2" interfaces, the prepared statement
** that is returned (the [sqlite3_stmt] object) contains a copy of the
** original SQL text. This causes the [sqlite3_step()] interface to
** behave a differently in two ways:
**
** <ol>
** <li>
** If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
** always used to do, [sqlite3_step()] will automatically recompile the SQL
** statement and try to run it again.  If the schema has changed in
** a way that makes the statement no longer valid, [sqlite3_step()] will still







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**
** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
** recommended for all new programs. The two older interfaces are retained
** for backwards compatibility, but their use is discouraged.
** In the "v2" interfaces, the prepared statement
** that is returned (the [sqlite3_stmt] object) contains a copy of the
** original SQL text. This causes the [sqlite3_step()] interface to
** behave a differently in three ways:
**
** <ol>
** <li>
** If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
** always used to do, [sqlite3_step()] will automatically recompile the SQL
** statement and try to run it again.  If the schema has changed in
** a way that makes the statement no longer valid, [sqlite3_step()] will still
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** When an error occurs, [sqlite3_step()] will return one of the detailed
** [error codes] or [extended error codes].  The legacy behavior was that
** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
** and you would have to make a second call to [sqlite3_reset()] in order
** to find the underlying cause of the problem. With the "v2" prepare
** interfaces, the underlying reason for the error is returned immediately.
** </li>








** </ol>
**
** Requirements:
** [H13011] [H13012] [H13013] [H13014] [H13015] [H13016] [H13019] [H13021]
**
*/
SQLITE_API int sqlite3_prepare(







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** When an error occurs, [sqlite3_step()] will return one of the detailed
** [error codes] or [extended error codes].  The legacy behavior was that
** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
** and you would have to make a second call to [sqlite3_reset()] in order
** to find the underlying cause of the problem. With the "v2" prepare
** interfaces, the underlying reason for the error is returned immediately.
** </li>
**
** <li>
** ^If the value of a [parameter | host parameter] in the WHERE clause might
** change the query plan for a statement, then the statement may 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 the [parameter]. 
** </li>
** </ol>
**
** Requirements:
** [H13011] [H13012] [H13013] [H13014] [H13015] [H13016] [H13019] [H13021]
**
*/
SQLITE_API int sqlite3_prepare(
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**
** These routines return information about a single column of the current
** result row of a query.  In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned.  The leftmost column of the result set has the index 0.


**
** If the SQL statement does not currently point to a valid row, or if the
** column index is out of range, the result is undefined.
** These routines may only be called when the most recent call to
** [sqlite3_step()] has returned [SQLITE_ROW] and neither
** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
** If any of these routines are called after [sqlite3_reset()] or







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**
** These routines return information about a single column of the current
** result row of a query.  In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned.  The leftmost column of the result set has the index 0.
** The number of columns in the result can be determined using
** [sqlite3_column_count()].
**
** If the SQL statement does not currently point to a valid row, or if the
** column index is out of range, the result is undefined.
** These routines may only be called when the most recent call to
** [sqlite3_step()] has returned [SQLITE_ROW] and neither
** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
** If any of these routines are called after [sqlite3_reset()] or