Fossil

** utility for accessing SQLite databases.
*/
#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS)
/* This needs to come before any includes for MSVC compiler */
#define _CRT_SECURE_NO_WARNINGS
#endif

/*
** Optionally #include a user-defined header, whereby compilation options
** may be set prior to where they take effect, but after platform setup. 
** If SQLITE_CUSTOM_INCLUDE=? is defined, its value names the #include
** file. Note that this macro has a like effect on sqlite3.c compilation.
*/
#ifdef SQLITE_CUSTOM_INCLUDE
# define INC_STRINGIFY_(f) #f
# define INC_STRINGIFY(f) INC_STRINGIFY_(f)
# include INC_STRINGIFY(SQLITE_CUSTOM_INCLUDE)
#endif

/*
** Determine if we are dealing with WinRT, which provides only a subset of
** the full Win32 API.
*/
#if !defined(SQLITE_OS_WINRT)
# define SQLITE_OS_WINRT 0
#endif

**
**  (1)  start = $value  -- constraint exists
**  (2)  stop = $value   -- constraint exists
**  (4)  step = $value   -- constraint exists
**  (8)  output in descending order
*/
static int seriesBestIndex(
  sqlite3_vtab *pVTab,
  sqlite3_index_info *pIdxInfo
){
  int i, j;              /* Loop over constraints */
  int idxNum = 0;        /* The query plan bitmask */
  int bStartSeen = 0;    /* EQ constraint seen on the START column */
  int unusableMask = 0;  /* Mask of unusable constraints */
  int nArg = 0;          /* Number of arguments that seriesFilter() expects */
  int aIdx[3];           /* Constraints on start, stop, and step */
  const struct sqlite3_index_constraint *pConstraint;

  /* This implementation assumes that the start, stop, and step columns
  ** are the last three columns in the virtual table. */
  assert( SERIES_COLUMN_STOP == SERIES_COLUMN_START+1 );
  assert( SERIES_COLUMN_STEP == SERIES_COLUMN_START+2 );

  aIdx[0] = aIdx[1] = aIdx[2] = -1;
  pConstraint = pIdxInfo->aConstraint;
  for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){
    int iCol;    /* 0 for start, 1 for stop, 2 for step */
    int iMask;   /* bitmask for those column */
    if( pConstraint->iColumn<SERIES_COLUMN_START ) continue;
    iCol = pConstraint->iColumn - SERIES_COLUMN_START;
    assert( iCol>=0 && iCol<=2 );
    iMask = 1 << iCol;
    if( iCol==0 ) bStartSeen = 1;
    if( pConstraint->usable==0 ){
      unusableMask |=  iMask;
      continue;
    }else if( pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){
      idxNum |= iMask;
      aIdx[iCol] = i;
    }
  }
  for(i=0; i<3; i++){
    if( (j = aIdx[i])>=0 ){
      pIdxInfo->aConstraintUsage[j].argvIndex = ++nArg;
      pIdxInfo->aConstraintUsage[j].omit = !SQLITE_SERIES_CONSTRAINT_VERIFY;
    }
  }
  /* The current generate_column() implementation requires at least one
  ** argument (the START value).  Legacy versions assumed START=0 if the
  ** first argument was omitted.  Compile with -DZERO_ARGUMENT_GENERATE_SERIES
  ** to obtain the legacy behavior */
#ifndef ZERO_ARGUMENT_GENERATE_SERIES
  if( !bStartSeen ){
    sqlite3_free(pVTab->zErrMsg);
    pVTab->zErrMsg = sqlite3_mprintf(
        "first argument to \"generate_series()\" missing or unusable");
    return SQLITE_ERROR;
  }
#endif
  if( (unusableMask & ~idxNum)!=0 ){
    /* The start, stop, and step columns are inputs.  Therefore if there
    ** are unusable constraints on any of start, stop, or step then
    ** this plan is unusable */
    return SQLITE_CONSTRAINT;
  }
  if( (idxNum & 3)==3 ){

  int rc, rc2;
  char *pCsr = 0;
  int nPk = 0;

  rc = idxPrintfPrepareStmt(db, &p1, pzErrmsg, "PRAGMA table_xinfo=%Q", zTab);
  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){
    const char *zCol = (const char*)sqlite3_column_text(p1, 1);
    const char *zColSeq = 0;
    nByte += 1 + STRLEN(zCol);
    rc = sqlite3_table_column_metadata(
        db, "main", zTab, zCol, 0, &zColSeq, 0, 0, 0
    );
    if( zColSeq==0 ) zColSeq = "binary";
    nByte += 1 + STRLEN(zColSeq);
    nCol++;
    nPk += (sqlite3_column_int(p1, 5)>0);
  }
  rc2 = sqlite3_reset(p1);
  if( rc==SQLITE_OK ) rc = rc2;

  nByte += sizeof(IdxColumn) * nCol;
  if( rc==SQLITE_OK ){
    pNew = idxMalloc(&rc, nByte);
  }
  if( rc==SQLITE_OK ){
    pNew->aCol = (IdxColumn*)&pNew[1];
    pNew->nCol = nCol;
    pCsr = (char*)&pNew->aCol[nCol];
  }

  nCol = 0;
  while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){
    const char *zCol = (const char*)sqlite3_column_text(p1, 1);
    const char *zColSeq = 0;
    int nCopy = STRLEN(zCol) + 1;
    pNew->aCol[nCol].zName = pCsr;
    pNew->aCol[nCol].iPk = (sqlite3_column_int(p1, 5)==1 && nPk==1);
    memcpy(pCsr, zCol, nCopy);
    pCsr += nCopy;

    rc = sqlite3_table_column_metadata(
        db, "main", zTab, zCol, 0, &zColSeq, 0, 0, 0
    );
    if( rc==SQLITE_OK ){
      if( zColSeq==0 ) zColSeq = "binary";
      nCopy = STRLEN(zColSeq) + 1;
      pNew->aCol[nCol].zColl = pCsr;
      memcpy(pCsr, zColSeq, nCopy);
      pCsr += nCopy;
    }

    nCol++;
  }
  idxFinalize(&rc, p1);

    open_db(p, 0);
    rc = sqlite3_exec(p->db,
       "SELECT sql FROM"
       "  (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x"
       "     FROM sqlite_schema UNION ALL"
       "   SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_schema) "
       "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' "
       "ORDER BY x",
       callback, &data, 0
    );
    if( rc==SQLITE_OK ){
      sqlite3_stmt *pStmt;
      rc = sqlite3_prepare_v2(p->db,
               "SELECT rowid FROM sqlite_schema"
               " WHERE name GLOB 'sqlite_stat[134]'",
               -1, &pStmt, 0);
      doStats = sqlite3_step(pStmt)==SQLITE_ROW;
      sqlite3_finalize(pStmt);
    }
    if( doStats==0 ){
      raw_printf(p->out, "/* No STAT tables available */\n");
    }else{
      raw_printf(p->out, "ANALYZE sqlite_schema;\n");


      data.cMode = data.mode = MODE_Insert;
      data.zDestTable = "sqlite_stat1";
      shell_exec(&data, "SELECT * FROM sqlite_stat1", 0);
      data.zDestTable = "sqlite_stat4";
      shell_exec(&data, "SELECT * FROM sqlite_stat4", 0);
      raw_printf(p->out, "ANALYZE sqlite_schema;\n");
    }

#endif
      }else if( optionMatch(z, "append") ){
        p->openMode = SHELL_OPEN_APPENDVFS;
      }else if( optionMatch(z, "readonly") ){
        p->openMode = SHELL_OPEN_READONLY;
      }else if( optionMatch(z, "nofollow") ){
        p->openFlags |= SQLITE_OPEN_NOFOLLOW;
      }else if( optionMatch(z, "excl") ){
        p->openFlags |= SQLITE_OPEN_EXCLUSIVE;
#ifndef SQLITE_OMIT_DESERIALIZE
      }else if( optionMatch(z, "deserialize") ){
        p->openMode = SHELL_OPEN_DESERIALIZE;
      }else if( optionMatch(z, "hexdb") ){
        p->openMode = SHELL_OPEN_HEXDB;
      }else if( optionMatch(z, "maxsize") && iName+1<nArg ){
        p->szMax = integerValue(azArg[++iName]);

      sqlite3_free(zErrMsg);
      zErrMsg = 0;
    }else{
      utf8_printf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db));
    }
    return 1;
  }else if( ShellHasFlag(p, SHFLG_CountChanges) ){
    raw_printf(p->out, "changes: %3lld   total_changes: %lld\n",
            sqlite3_changes64(p->db), sqlite3_total_changes64(p->db));
  }
  return 0;
}


/*
** Read input from *in and process it.  If *in==0 then input

/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.37.0.  By combining all the individual C code files into this
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other

** separate file. This file contains only code for the core SQLite library.
*/
#define SQLITE_CORE 1
#define SQLITE_AMALGAMATION 1
#ifndef SQLITE_PRIVATE
# define SQLITE_PRIVATE static
#endif



















































































































































































































































































































































































































































































































































































































































































































































































































/************** Begin file sqliteInt.h ***************************************/
/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**

*/
#if !defined(_USE_32BIT_TIME_T) && !defined(_USE_64BIT_TIME_T) && \
    defined(_WIN32) && !defined(_WIN64) && \
    defined(__MINGW_MAJOR_VERSION) && __MINGW_MAJOR_VERSION >= 4 && \
    defined(__MSVCRT__)
# define _USE_32BIT_TIME_T
#endif

/* Optionally #include a user-defined header, whereby compilation options
** may be set prior to where they take effect, but after platform setup.
** If SQLITE_CUSTOM_INCLUDE=? is defined, its value names the #include
** file.
*/
#ifdef SQLITE_CUSTOM_INCLUDE
# define INC_STRINGIFY_(f) #f
# define INC_STRINGIFY(f) INC_STRINGIFY_(f)
# include INC_STRINGIFY(SQLITE_CUSTOM_INCLUDE)
#endif

/* The public SQLite interface.  The _FILE_OFFSET_BITS macro must appear
** first in QNX.  Also, the _USE_32BIT_TIME_T macro must appear first for
** MinGW.
*/
/************** Include sqlite3.h in the middle of sqliteInt.h ***************/
/************** Begin file sqlite3.h *****************************************/

*/
#if 0
extern "C" {
#endif


/*
** Facilitate override of interface linkage and calling conventions.
** Be aware that these macros may not be used within this particular
** translation of the amalgamation and its associated header file.
**
** The SQLITE_EXTERN and SQLITE_API macros are used to instruct the
** compiler that the target identifier should have external linkage.
**
** The SQLITE_CDECL macro is used to set the calling convention for
** public functions that accept a variable number of arguments.
**
** The SQLITE_APICALL macro is used to set the calling convention for
** public functions that accept a fixed number of arguments.
**
** The SQLITE_STDCALL macro is no longer used and is now deprecated.
**
** The SQLITE_CALLBACK macro is used to set the calling convention for
** function pointers.
**
** The SQLITE_SYSAPI macro is used to set the calling convention for
** functions provided by the operating system.
**
** Currently, the SQLITE_CDECL, SQLITE_APICALL, SQLITE_CALLBACK, and
** SQLITE_SYSAPI macros are used only when building for environments
** that require non-default calling conventions.
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif
#ifndef SQLITE_API
# define SQLITE_API
#endif

** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.37.0"
#define SQLITE_VERSION_NUMBER 3037000
#define SQLITE_SOURCE_ID      "2021-07-21 15:42:05 60695359dc5d3bcba68a68e1842c40f4a01650eb5af408e02fb856fd8245e16d"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros

#define SQLITE_BUSY_TIMEOUT            (SQLITE_BUSY   |  (3<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
#define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
#define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))
#define SQLITE_CANTOPEN_DIRTYWAL       (SQLITE_CANTOPEN | (5<<8)) /* Not Used */
#define SQLITE_CANTOPEN_SYMLINK        (SQLITE_CANTOPEN | (6<<8))
#define SQLITE_CANTOPEN_EXISTS         (SQLITE_CANTOPEN | (7<<8))
#define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
#define SQLITE_CORRUPT_SEQUENCE        (SQLITE_CORRUPT | (2<<8))
#define SQLITE_CORRUPT_INDEX           (SQLITE_CORRUPT | (3<<8))
#define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
#define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
#define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
#define SQLITE_READONLY_DBMOVED        (SQLITE_READONLY | (4<<8))

*/
SQLITE_API void sqlite3_set_last_insert_rowid(sqlite3*,sqlite3_int64);

/*
** CAPI3REF: Count The Number Of Rows Modified
** METHOD: sqlite3
**
** ^These functions return the number of rows modified, inserted or
** deleted by the most recently completed INSERT, UPDATE or DELETE
** statement on the database connection specified by the only parameter.
** The two functions are identical except for the type of the return value
** and that if the number of rows modified by the most recent INSERT, UPDATE
** or DELETE is greater than the maximum value supported by type "int", then
** the return value of sqlite3_changes() is undefined. ^Executing any other
** type of SQL statement does not modify the value returned by these functions.

**
** ^Only changes made directly by the INSERT, UPDATE or DELETE statement are
** considered - auxiliary changes caused by [CREATE TRIGGER | triggers],
** [foreign key actions] or [REPLACE] constraint resolution are not counted.
**
** Changes to a view that are intercepted by
** [INSTEAD OF trigger | INSTEAD OF triggers] are not counted. ^The value

** <li> the [sqlite3_total_changes()] interface
** <li> the [count_changes pragma]
** <li> the [changes() SQL function]
** <li> the [data_version pragma]
** </ul>
*/
SQLITE_API int sqlite3_changes(sqlite3*);
SQLITE_API sqlite3_int64 sqlite3_changes64(sqlite3*);

/*
** CAPI3REF: Total Number Of Rows Modified
** METHOD: sqlite3
**
** ^These functions return the total number of rows inserted, modified or
** deleted by all [INSERT], [UPDATE] or [DELETE] statements completed
** since the database connection was opened, including those executed as
** part of trigger programs. The two functions are identical except for the
** type of the return value and that if the number of rows modified by the
** connection exceeds the maximum value supported by type "int", then
** the return value of sqlite3_total_changes() is undefined. ^Executing
** any other type of SQL statement does not affect the value returned by
** sqlite3_total_changes().
**
** ^Changes made as part of [foreign key actions] are included in the
** count, but those made as part of REPLACE constraint resolution are
** not. ^Changes to a view that are intercepted by INSTEAD OF triggers
** are not counted.
**
** The [sqlite3_total_changes(D)] interface only reports the number

** <li> the [count_changes pragma]
** <li> the [changes() SQL function]
** <li> the [data_version pragma]
** <li> the [SQLITE_FCNTL_DATA_VERSION] [file control]
** </ul>
*/
SQLITE_API int sqlite3_total_changes(sqlite3*);
SQLITE_API sqlite3_int64 sqlite3_total_changes64(sqlite3*);

/*
** CAPI3REF: Interrupt A Long-Running Query
** METHOD: sqlite3
**
** ^This function causes any pending database operation to abort and
** return at its earliest opportunity. This routine is typically

** ^(<dt>[SQLITE_OPEN_PRIVATECACHE]</dt>
** <dd>The database is opened [shared cache] disabled, overriding
** the default shared cache setting provided by
** [sqlite3_enable_shared_cache()].)^
**
** [[OPEN_NOFOLLOW]] ^(<dt>[SQLITE_OPEN_NOFOLLOW]</dt>
** <dd>The database filename is not allowed to be a symbolic link</dd>
**
** [[OPEN_EXCLUSIVE]] ^(<dt>[SQLITE_OPEN_EXCLUSIVE]</dt>
** <dd>This flag causes the open to fail if the database file already
** exists.  The open will only be success if this flag is used in combination
** with the SQLITE_OPEN_CREATE and SQLITE_OPEN_READWRITE flags and if
** the file does not previously exist.</dd>
** </dl>)^
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
** required combinations shown above optionally combined with other
** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**

** bound parameter expansions.  ^The [SQLITE_OMIT_TRACE] compile-time
** option causes sqlite3_expanded_sql() to always return NULL.
**
** ^The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P)
** are managed by SQLite and are automatically freed when the prepared
** statement is finalized.
** ^The string returned by sqlite3_expanded_sql(P), on the other hand,
** is obtained from [sqlite3_malloc()] and must be freed by the application
** by passing it to [sqlite3_free()].
**
** ^The sqlite3_normalized_sql() interface is only available if
** the [SQLITE_ENABLE_NORMALIZE] compile-time option is defined.
*/
SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt);
SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt);
#ifdef SQLITE_ENABLE_NORMALIZE
SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt);
#endif

/*
** CAPI3REF: Determine If An SQL Statement Writes The Database
** METHOD: sqlite3_stmt
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
** and only if the [prepared statement] X makes no direct changes to

** to report an error, though the commit will have still occurred. If the
** callback returns [SQLITE_ROW] or [SQLITE_DONE], or if it returns a value
** that does not correspond to any valid SQLite error code, the results
** are undefined.
**
** A single database handle may have at most a single write-ahead log callback
** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any
** previously registered write-ahead log callback. ^The return value is
** a copy of the third parameter from the previous call, if any, or 0.
** ^Note that the [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will
** overwrite any prior [sqlite3_wal_hook()] settings.
*/
SQLITE_API void *sqlite3_wal_hook(
  sqlite3*,
  int(*)(void *,sqlite3*,const char*,int),
  void*

** connection closes.  If the SQLITE_DESERIALIZE_RESIZEABLE bit is set, then
** SQLite will try to increase the buffer size using sqlite3_realloc64()
** if writes on the database cause it to grow larger than M bytes.
**
** The sqlite3_deserialize() interface will fail with SQLITE_BUSY if the
** database is currently in a read transaction or is involved in a backup
** operation.
**
** It is not possible to deserialized into the TEMP database.  If the
** S argument to sqlite3_deserialize(D,S,P,N,M,F) is "temp" then the
** function returns SQLITE_ERROR.
**
** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the
** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then
** [sqlite3_free()] is invoked on argument P prior to returning.
**
** This interface is omitted if SQLite is compiled with the
** [SQLITE_OMIT_DESERIALIZE] option.

/************** Continuing where we left off in sqliteInt.h ******************/

/*
** Include the configuration header output by 'configure' if we're using the
** autoconf-based build
*/
#if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H)
#include "config.h"
#define SQLITECONFIG_H 1
#endif

/************** Include sqliteLimit.h in the middle of sqliteInt.h ***********/
/************** Begin file sqliteLimit.h *************************************/
/*
** 2007 May 7

/*
** WAL mode depends on atomic aligned 32-bit loads and stores in a few
** places.  The following macros try to make this explicit.
*/
#ifndef __has_extension
# define __has_extension(x) 0     /* compatibility with non-clang compilers */
#endif
#if GCC_VERSION>=4007000 || __has_extension(c_atomic)
# define SQLITE_ATOMIC_INTRINSICS 1
# define AtomicLoad(PTR)       __atomic_load_n((PTR),__ATOMIC_RELAXED)
# define AtomicStore(PTR,VAL)  __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED)
#else
# define SQLITE_ATOMIC_INTRINSICS 0
# define AtomicLoad(PTR)       (*(PTR))
# define AtomicStore(PTR,VAL)  (*(PTR) = (VAL))
#endif

/*
** Include standard header files as necessary
*/

** anywhere - the key is the content.  (BTREE_BLOBKEY is used for SQL
** indices.)
*/
#define BTREE_INTKEY     1    /* Table has only 64-bit signed integer keys */
#define BTREE_BLOBKEY    2    /* Table has keys only - no data */

SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree*, int, int*);
SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, i64*);
SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree*, int, int);

SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue);
SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value);

SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p);

SQLITE_PRIVATE void sqlite3BtreeCursorZero(BtCursor*);
SQLITE_PRIVATE void sqlite3BtreeCursorHintFlags(BtCursor*, unsigned);
#ifdef SQLITE_ENABLE_CURSOR_HINTS
SQLITE_PRIVATE void sqlite3BtreeCursorHint(BtCursor*, int, ...);
#endif

SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreeTableMoveto(
  BtCursor*,

  i64 intKey,
  int bias,
  int *pRes
);
SQLITE_PRIVATE int sqlite3BtreeIndexMoveto(
  BtCursor*,
  UnpackedRecord *pUnKey,
  int *pRes
);
SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor*, int*);
SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags);

/* Allowed flags for sqlite3BtreeDelete() and sqlite3BtreeInsert() */
#define BTREE_SAVEPOSITION 0x02  /* Leave cursor pointing at NEXT or PREV */

  u8 vtabOnConflict;            /* Value to return for s3_vtab_on_conflict() */
  u8 isTransactionSavepoint;    /* True if the outermost savepoint is a TS */
  u8 mTrace;                    /* zero or more SQLITE_TRACE flags */
  u8 noSharedCache;             /* True if no shared-cache backends */
  u8 nSqlExec;                  /* Number of pending OP_SqlExec opcodes */
  int nextPagesize;             /* Pagesize after VACUUM if >0 */
  u32 magic;                    /* Magic number for detect library misuse */
  i64 nChange;                  /* Value returned by sqlite3_changes() */
  i64 nTotalChange;             /* Value returned by sqlite3_total_changes() */
  int aLimit[SQLITE_N_LIMIT];   /* Limits */
  int nMaxSorterMmap;           /* Maximum size of regions mapped by sorter */
  struct sqlite3InitInfo {      /* Information used during initialization */
    Pgno newTnum;               /* Rootpage of table being initialized */
    u8 iDb;                     /* Which db file is being initialized */
    u8 busy;                    /* TRUE if currently initializing */
    unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */

   /* TH3 expects this value  ^^^^^^^^^^ to be 0x0000800. Don't change it */
#define SQLITE_PushDown       0x00001000 /* The push-down optimization */
#define SQLITE_SimplifyJoin   0x00002000 /* Convert LEFT JOIN to JOIN */
#define SQLITE_SkipScan       0x00004000 /* Skip-scans */
#define SQLITE_PropagateConst 0x00008000 /* The constant propagation opt */
#define SQLITE_MinMaxOpt      0x00010000 /* The min/max optimization */
#define SQLITE_SeekScan       0x00020000 /* The OP_SeekScan optimization */
#define SQLITE_OmitOrderBy    0x00040000 /* Omit pointless ORDER BY */
   /* TH3 expects this value  ^^^^^^^^^^ to be 0x40000. Coordinate any change */
#define SQLITE_AllOpts        0xffffffff /* All optimizations */

/*
** Macros for testing whether or not optimizations are enabled or disabled.
*/
#define OptimizationDisabled(db, mask)  (((db)->dbOptFlags&(mask))!=0)
#define OptimizationEnabled(db, mask)   (((db)->dbOptFlags&(mask))==0)

/*
** Possible values for FuncDef.flags.  Note that the _LENGTH and _TYPEOF
** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG.  And
** SQLITE_FUNC_CONSTANT must be the same as SQLITE_DETERMINISTIC.  There
** are assert() statements in the code to verify this.
**
** Value constraints (enforced via assert()):
**     SQLITE_FUNC_MINMAX      ==  NC_MinMaxAgg      == SF_MinMaxAgg
**     SQLITE_FUNC_ANYORDER    ==  NC_OrderAgg       == SF_OrderByReqd
**     SQLITE_FUNC_LENGTH      ==  OPFLAG_LENGTHARG
**     SQLITE_FUNC_TYPEOF      ==  OPFLAG_TYPEOFARG
**     SQLITE_FUNC_CONSTANT    ==  SQLITE_DETERMINISTIC from the API
**     SQLITE_FUNC_DIRECT      ==  SQLITE_DIRECTONLY from the API
**     SQLITE_FUNC_UNSAFE      ==  SQLITE_INNOCUOUS
**     SQLITE_FUNC_ENCMASK   depends on SQLITE_UTF* macros in the API
*/
#define SQLITE_FUNC_ENCMASK  0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */
#define SQLITE_FUNC_LIKE     0x0004 /* Candidate for the LIKE optimization */
#define SQLITE_FUNC_CASE     0x0008 /* Case-sensitive LIKE-type function */
#define SQLITE_FUNC_EPHEM    0x0010 /* Ephemeral.  Delete with VDBE */
#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/

#define SQLITE_FUNC_OFFSET   0x8000 /* Built-in sqlite_offset() function */
#define SQLITE_FUNC_WINDOW   0x00010000 /* Built-in window-only function */
#define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */
#define SQLITE_FUNC_DIRECT   0x00080000 /* Not for use in TRIGGERs or VIEWs */
#define SQLITE_FUNC_SUBTYPE  0x00100000 /* Result likely to have sub-type */
#define SQLITE_FUNC_UNSAFE   0x00200000 /* Function has side effects */
#define SQLITE_FUNC_INLINE   0x00400000 /* Functions implemented in-line */
#define SQLITE_FUNC_ANYORDER 0x08000000 /* count/min/max aggregate */

/* Identifier numbers for each in-line function */
#define INLINEFUNC_coalesce             0
#define INLINEFUNC_implies_nonnull_row  1
#define INLINEFUNC_expr_implies_expr    2
#define INLINEFUNC_expr_compare         3
#define INLINEFUNC_affinity             4

  Select *pWinSelect;  /* SELECT statement for any window functions */
};

/*
** Allowed values for the NameContext, ncFlags field.
**
** Value constraints (all checked via assert()):
**    NC_HasAgg    == SF_HasAgg       == EP_Agg
**    NC_MinMaxAgg == SF_MinMaxAgg    == SQLITE_FUNC_MINMAX
**    NC_OrderAgg  == SF_OrderByReqd  == SQLITE_FUNC_ANYORDER
**    NC_HasWin    == EP_Win
**
*/
#define NC_AllowAgg  0x000001 /* Aggregate functions are allowed here */
#define NC_PartIdx   0x000002 /* True if resolving a partial index WHERE */
#define NC_IsCheck   0x000004 /* True if resolving a CHECK constraint */
#define NC_GenCol    0x000008 /* True for a GENERATED ALWAYS AS clause */
#define NC_HasAgg    0x000010 /* One or more aggregate functions seen */
#define NC_IdxExpr   0x000020 /* True if resolving columns of CREATE INDEX */
#define NC_SelfRef   0x00002e /* Combo: PartIdx, isCheck, GenCol, and IdxExpr */
#define NC_VarSelect 0x000040 /* A correlated subquery has been seen */
#define NC_UEList    0x000080 /* True if uNC.pEList is used */
#define NC_UAggInfo  0x000100 /* True if uNC.pAggInfo is used */
#define NC_UUpsert   0x000200 /* True if uNC.pUpsert is used */
#define NC_UBaseReg  0x000400 /* True if uNC.iBaseReg is used */
#define NC_MinMaxAgg 0x001000 /* min/max aggregates seen.  See note above */
#define NC_Complex   0x002000 /* True if a function or subquery seen */
#define NC_AllowWin  0x004000 /* Window functions are allowed here */
#define NC_HasWin    0x008000 /* One or more window functions seen */
#define NC_IsDDL     0x010000 /* Resolving names in a CREATE statement */
#define NC_InAggFunc 0x020000 /* True if analyzing arguments to an agg func */
#define NC_FromDDL   0x040000 /* SQL text comes from sqlite_schema */
#define NC_NoSelect  0x080000 /* Do not descend into sub-selects */
#define NC_OrderAgg 0x8000000 /* Has an aggregate other than count/min/max */

/*
** An instance of the following object describes a single ON CONFLICT
** clause in an upsert.
**
** The pUpsertTarget field is only set if the ON CONFLICT clause includes
** conflict-target clause.  (In "ON CONFLICT(a,b)" the "(a,b)" is the

};

/*
** Allowed values for Select.selFlags.  The "SF" prefix stands for
** "Select Flag".
**
** Value constraints (all checked via assert())
**     SF_HasAgg      == NC_HasAgg
**     SF_MinMaxAgg   == NC_MinMaxAgg     == SQLITE_FUNC_MINMAX
**     SF_OrderByReqd == NC_OrderAgg      == SQLITE_FUNC_ANYORDER
**     SF_FixedLimit  == WHERE_USE_LIMIT
*/
#define SF_Distinct      0x0000001 /* Output should be DISTINCT */
#define SF_All           0x0000002 /* Includes the ALL keyword */
#define SF_Resolved      0x0000004 /* Identifiers have been resolved */
#define SF_Aggregate     0x0000008 /* Contains agg functions or a GROUP BY */
#define SF_HasAgg        0x0000010 /* Contains aggregate functions */
#define SF_UsesEphemeral 0x0000020 /* Uses the OpenEphemeral opcode */

#define SF_Converted     0x0010000 /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden 0x0020000 /* Include hidden columns in output */
#define SF_ComplexResult 0x0040000 /* Result contains subquery or function */
#define SF_WhereBegin    0x0080000 /* Really a WhereBegin() call.  Debug Only */
#define SF_WinRewrite    0x0100000 /* Window function rewrite accomplished */
#define SF_View          0x0200000 /* SELECT statement is a view */
#define SF_NoopOrderBy   0x0400000 /* ORDER BY is ignored for this query */
#define SF_UFSrcCheck    0x0800000 /* Check pSrc as required by UPDATE...FROM */
#define SF_PushDown      0x1000000 /* SELECT has be modified by push-down opt */
#define SF_MultiPart     0x2000000 /* Has multiple incompatible PARTITIONs */
#define SF_CopyCte       0x4000000 /* SELECT statement is a copy of a CTE */
#define SF_OrderByReqd   0x8000000 /* The ORDER BY clause may not be omitted */

/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
**     SRT_Union       Store results as a key in a temporary index

SQLITE_PRIVATE void sqlite3ExprFunctionUsable(Parse*,Expr*,FuncDef*);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
SQLITE_PRIVATE void sqlite3ExprDeferredDelete(Parse*, Expr*);
SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*);
SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*);
SQLITE_PRIVATE Select *sqlite3ExprListToValues(Parse*, int, ExprList*);
SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int,int);
SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int);
SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,const char*,const char*);
SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);
SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);

SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);
SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr*);
SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *);
SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3*);
SQLITE_PRIVATE int sqlite3CheckObjectName(Parse*, const char*,const char*,const char*);
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *, i64);
SQLITE_PRIVATE int sqlite3AddInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3SubInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3MulInt64(i64*,i64);
SQLITE_PRIVATE int sqlite3AbsInt32(int);
#ifdef SQLITE_ENABLE_8_3_NAMES
SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*);
#else

#if defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST)
SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3*);
#endif

SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr);
SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr);
SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr*, int);
SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(Parse*,Expr*,int,int);
SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse*, Expr*);

#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt);
#endif

#endif /* SQLITEINT_H */

/************** End of sqliteInt.h *******************************************/
/************** Begin file ctime.c *******************************************/
/*
** 2010 February 23
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file implements routines used to report what compile-time options
** SQLite was built with.
*/
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS /* IMP: R-16824-07538 */

/*
** Include the configuration header output by 'configure' if we're using the
** autoconf-based build
*/
#if defined(_HAVE_SQLITE_CONFIG_H) && !defined(SQLITECONFIG_H)
/* #include "config.h" */
#define SQLITECONFIG_H 1
#endif

/* These macros are provided to "stringify" the value of the define
** for those options in which the value is meaningful. */
#define CTIMEOPT_VAL_(opt) #opt
#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt)

/* Like CTIMEOPT_VAL, but especially for SQLITE_DEFAULT_LOOKASIDE. This
** option requires a separate macro because legal values contain a single
** comma. e.g. (-DSQLITE_DEFAULT_LOOKASIDE="100,100") */
#define CTIMEOPT_VAL2_(opt1,opt2) #opt1 "," #opt2
#define CTIMEOPT_VAL2(opt) CTIMEOPT_VAL2_(opt)
/* #include "sqliteInt.h" */

/*
** An array of names of all compile-time options.  This array should
** be sorted A-Z.
**
** This array looks large, but in a typical installation actually uses
** only a handful of compile-time options, so most times this array is usually
** rather short and uses little memory space.
*/
static const char * const sqlite3azCompileOpt[] = {

/*
** BEGIN CODE GENERATED BY tool/mkctime.tcl
*/
#ifdef SQLITE_32BIT_ROWID
  "32BIT_ROWID",
#endif
#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
  "4_BYTE_ALIGNED_MALLOC",
#endif
#ifdef SQLITE_64BIT_STATS
  "64BIT_STATS",
#endif
#ifdef SQLITE_ALLOW_COVERING_INDEX_SCAN
# if SQLITE_ALLOW_COVERING_INDEX_SCAN != 1
  "ALLOW_COVERING_INDEX_SCAN=" CTIMEOPT_VAL(SQLITE_ALLOW_COVERING_INDEX_SCAN),
# endif
#endif
#ifdef SQLITE_ALLOW_URI_AUTHORITY
  "ALLOW_URI_AUTHORITY",
#endif
#ifdef SQLITE_ATOMIC_INTRINSICS
  "ATOMIC_INTRINSICS=" CTIMEOPT_VAL(SQLITE_ATOMIC_INTRINSICS),
#endif
#ifdef SQLITE_BITMASK_TYPE
  "BITMASK_TYPE=" CTIMEOPT_VAL(SQLITE_BITMASK_TYPE),
#endif
#ifdef SQLITE_BUG_COMPATIBLE_20160819
  "BUG_COMPATIBLE_20160819",
#endif
#ifdef SQLITE_CASE_SENSITIVE_LIKE
  "CASE_SENSITIVE_LIKE",
#endif
#ifdef SQLITE_CHECK_PAGES
  "CHECK_PAGES",
#endif
#if defined(__clang__) && defined(__clang_major__)
  "COMPILER=clang-" CTIMEOPT_VAL(__clang_major__) "."
                    CTIMEOPT_VAL(__clang_minor__) "."
                    CTIMEOPT_VAL(__clang_patchlevel__),
#elif defined(_MSC_VER)
  "COMPILER=msvc-" CTIMEOPT_VAL(_MSC_VER),
#elif defined(__GNUC__) && defined(__VERSION__)
  "COMPILER=gcc-" __VERSION__,
#endif
#ifdef SQLITE_COVERAGE_TEST
  "COVERAGE_TEST",
#endif
#ifdef SQLITE_DEBUG
  "DEBUG",
#endif
#ifdef SQLITE_DEFAULT_AUTOMATIC_INDEX
  "DEFAULT_AUTOMATIC_INDEX",
#endif
#ifdef SQLITE_DEFAULT_AUTOVACUUM
  "DEFAULT_AUTOVACUUM",
#endif
#ifdef SQLITE_DEFAULT_CACHE_SIZE
  "DEFAULT_CACHE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_CACHE_SIZE),
#endif
#ifdef SQLITE_DEFAULT_CKPTFULLFSYNC
  "DEFAULT_CKPTFULLFSYNC",
#endif
#ifdef SQLITE_DEFAULT_FILE_FORMAT
  "DEFAULT_FILE_FORMAT=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_FORMAT),
#endif
#ifdef SQLITE_DEFAULT_FILE_PERMISSIONS
  "DEFAULT_FILE_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_FILE_PERMISSIONS),
#endif
#ifdef SQLITE_DEFAULT_FOREIGN_KEYS
  "DEFAULT_FOREIGN_KEYS",
#endif
#ifdef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
  "DEFAULT_JOURNAL_SIZE_LIMIT=" CTIMEOPT_VAL(SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT),
#endif
#ifdef SQLITE_DEFAULT_LOCKING_MODE
  "DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE),
#endif
#ifdef SQLITE_DEFAULT_LOOKASIDE
  "DEFAULT_LOOKASIDE=" CTIMEOPT_VAL2(SQLITE_DEFAULT_LOOKASIDE),
#endif
#ifdef SQLITE_DEFAULT_MEMSTATUS
# if SQLITE_DEFAULT_MEMSTATUS != 1
  "DEFAULT_MEMSTATUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_MEMSTATUS),
# endif
#endif
#ifdef SQLITE_DEFAULT_MMAP_SIZE
  "DEFAULT_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_MMAP_SIZE),
#endif
#ifdef SQLITE_DEFAULT_PAGE_SIZE
  "DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_PAGE_SIZE),
#endif
#ifdef SQLITE_DEFAULT_PCACHE_INITSZ
  "DEFAULT_PCACHE_INITSZ=" CTIMEOPT_VAL(SQLITE_DEFAULT_PCACHE_INITSZ),
#endif
#ifdef SQLITE_DEFAULT_PROXYDIR_PERMISSIONS
  "DEFAULT_PROXYDIR_PERMISSIONS=" CTIMEOPT_VAL(SQLITE_DEFAULT_PROXYDIR_PERMISSIONS),
#endif
#ifdef SQLITE_DEFAULT_RECURSIVE_TRIGGERS
  "DEFAULT_RECURSIVE_TRIGGERS",
#endif
#ifdef SQLITE_DEFAULT_ROWEST
  "DEFAULT_ROWEST=" CTIMEOPT_VAL(SQLITE_DEFAULT_ROWEST),
#endif
#ifdef SQLITE_DEFAULT_SECTOR_SIZE
  "DEFAULT_SECTOR_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_SECTOR_SIZE),
#endif
#ifdef SQLITE_DEFAULT_SYNCHRONOUS
  "DEFAULT_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_SYNCHRONOUS),
#endif
#ifdef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT
  "DEFAULT_WAL_AUTOCHECKPOINT=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_AUTOCHECKPOINT),
#endif
#ifdef SQLITE_DEFAULT_WAL_SYNCHRONOUS
  "DEFAULT_WAL_SYNCHRONOUS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WAL_SYNCHRONOUS),
#endif
#ifdef SQLITE_DEFAULT_WORKER_THREADS
  "DEFAULT_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_DEFAULT_WORKER_THREADS),
#endif
#ifdef SQLITE_DIRECT_OVERFLOW_READ
  "DIRECT_OVERFLOW_READ",
#endif
#ifdef SQLITE_DISABLE_DIRSYNC
  "DISABLE_DIRSYNC",
#endif
#ifdef SQLITE_DISABLE_FTS3_UNICODE
  "DISABLE_FTS3_UNICODE",
#endif
#ifdef SQLITE_DISABLE_FTS4_DEFERRED
  "DISABLE_FTS4_DEFERRED",
#endif
#ifdef SQLITE_DISABLE_INTRINSIC
  "DISABLE_INTRINSIC",
#endif
#ifdef SQLITE_DISABLE_LFS
  "DISABLE_LFS",
#endif
#ifdef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS
  "DISABLE_PAGECACHE_OVERFLOW_STATS",
#endif
#ifdef SQLITE_DISABLE_SKIPAHEAD_DISTINCT
  "DISABLE_SKIPAHEAD_DISTINCT",
#endif
#ifdef SQLITE_ENABLE_8_3_NAMES
  "ENABLE_8_3_NAMES=" CTIMEOPT_VAL(SQLITE_ENABLE_8_3_NAMES),
#endif
#ifdef SQLITE_ENABLE_API_ARMOR
  "ENABLE_API_ARMOR",
#endif
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
  "ENABLE_ATOMIC_WRITE",
#endif
#ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE
  "ENABLE_BATCH_ATOMIC_WRITE",
#endif
#ifdef SQLITE_ENABLE_BYTECODE_VTAB
  "ENABLE_BYTECODE_VTAB",
#endif
#ifdef SQLITE_ENABLE_CEROD
  "ENABLE_CEROD=" CTIMEOPT_VAL(SQLITE_ENABLE_CEROD),
#endif
#ifdef SQLITE_ENABLE_COLUMN_METADATA
  "ENABLE_COLUMN_METADATA",
#endif
#ifdef SQLITE_ENABLE_COLUMN_USED_MASK
  "ENABLE_COLUMN_USED_MASK",
#endif
#ifdef SQLITE_ENABLE_COSTMULT
  "ENABLE_COSTMULT",
#endif
#ifdef SQLITE_ENABLE_CURSOR_HINTS
  "ENABLE_CURSOR_HINTS",
#endif
#ifdef SQLITE_ENABLE_DBPAGE_VTAB
  "ENABLE_DBPAGE_VTAB",
#endif
#ifdef SQLITE_ENABLE_DBSTAT_VTAB
  "ENABLE_DBSTAT_VTAB",
#endif
#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
  "ENABLE_EXPENSIVE_ASSERT",
#endif
#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
  "ENABLE_EXPLAIN_COMMENTS",
#endif
#ifdef SQLITE_ENABLE_FTS3
  "ENABLE_FTS3",
#endif
#ifdef SQLITE_ENABLE_FTS3_PARENTHESIS
  "ENABLE_FTS3_PARENTHESIS",
#endif
#ifdef SQLITE_ENABLE_FTS3_TOKENIZER
  "ENABLE_FTS3_TOKENIZER",
#endif
#ifdef SQLITE_ENABLE_FTS4
  "ENABLE_FTS4",
#endif
#ifdef SQLITE_ENABLE_FTS5
  "ENABLE_FTS5",
#endif
#ifdef SQLITE_ENABLE_GEOPOLY
  "ENABLE_GEOPOLY",
#endif
#ifdef SQLITE_ENABLE_HIDDEN_COLUMNS
  "ENABLE_HIDDEN_COLUMNS",
#endif
#ifdef SQLITE_ENABLE_ICU
  "ENABLE_ICU",
#endif
#ifdef SQLITE_ENABLE_IOTRACE
  "ENABLE_IOTRACE",
#endif
#ifdef SQLITE_ENABLE_JSON1
  "ENABLE_JSON1",
#endif
#ifdef SQLITE_ENABLE_LOAD_EXTENSION
  "ENABLE_LOAD_EXTENSION",
#endif
#ifdef SQLITE_ENABLE_LOCKING_STYLE
  "ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE),
#endif
#ifdef SQLITE_ENABLE_MATH_FUNCTIONS
  "ENABLE_MATH_FUNCTIONS",
#endif
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
  "ENABLE_MEMORY_MANAGEMENT",
#endif
#ifdef SQLITE_ENABLE_MEMSYS3
  "ENABLE_MEMSYS3",
#endif
#ifdef SQLITE_ENABLE_MEMSYS5
  "ENABLE_MEMSYS5",
#endif
#ifdef SQLITE_ENABLE_MULTIPLEX
  "ENABLE_MULTIPLEX",
#endif
#ifdef SQLITE_ENABLE_NORMALIZE
  "ENABLE_NORMALIZE",
#endif
#ifdef SQLITE_ENABLE_NULL_TRIM
  "ENABLE_NULL_TRIM",
#endif
#ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
  "ENABLE_OFFSET_SQL_FUNC",
#endif
#ifdef SQLITE_ENABLE_OVERSIZE_CELL_CHECK
  "ENABLE_OVERSIZE_CELL_CHECK",
#endif
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
  "ENABLE_PREUPDATE_HOOK",
#endif
#ifdef SQLITE_ENABLE_QPSG
  "ENABLE_QPSG",
#endif
#ifdef SQLITE_ENABLE_RBU
  "ENABLE_RBU",
#endif
#ifdef SQLITE_ENABLE_RTREE
  "ENABLE_RTREE",
#endif
#ifdef SQLITE_ENABLE_SELECTTRACE
  "ENABLE_SELECTTRACE",
#endif
#ifdef SQLITE_ENABLE_SESSION
  "ENABLE_SESSION",
#endif
#ifdef SQLITE_ENABLE_SNAPSHOT
  "ENABLE_SNAPSHOT",
#endif
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
  "ENABLE_SORTER_REFERENCES",
#endif
#ifdef SQLITE_ENABLE_SQLLOG
  "ENABLE_SQLLOG",
#endif
#ifdef SQLITE_ENABLE_STAT4
  "ENABLE_STAT4",
#endif
#ifdef SQLITE_ENABLE_STMTVTAB
  "ENABLE_STMTVTAB",
#endif
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
  "ENABLE_STMT_SCANSTATUS",
#endif
#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
  "ENABLE_UNKNOWN_SQL_FUNCTION",
#endif
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
  "ENABLE_UNLOCK_NOTIFY",
#endif
#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
  "ENABLE_UPDATE_DELETE_LIMIT",
#endif
#ifdef SQLITE_ENABLE_URI_00_ERROR
  "ENABLE_URI_00_ERROR",
#endif
#ifdef SQLITE_ENABLE_VFSTRACE
  "ENABLE_VFSTRACE",
#endif
#ifdef SQLITE_ENABLE_WHERETRACE
  "ENABLE_WHERETRACE",
#endif
#ifdef SQLITE_ENABLE_ZIPVFS
  "ENABLE_ZIPVFS",
#endif
#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS
  "EXPLAIN_ESTIMATED_ROWS",
#endif
#ifdef SQLITE_EXTRA_IFNULLROW
  "EXTRA_IFNULLROW",
#endif
#ifdef SQLITE_EXTRA_INIT
  "EXTRA_INIT=" CTIMEOPT_VAL(SQLITE_EXTRA_INIT),
#endif
#ifdef SQLITE_EXTRA_SHUTDOWN
  "EXTRA_SHUTDOWN=" CTIMEOPT_VAL(SQLITE_EXTRA_SHUTDOWN),
#endif
#ifdef SQLITE_FTS3_MAX_EXPR_DEPTH
  "FTS3_MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_FTS3_MAX_EXPR_DEPTH),
#endif
#ifdef SQLITE_FTS5_ENABLE_TEST_MI
  "FTS5_ENABLE_TEST_MI",
#endif
#ifdef SQLITE_FTS5_NO_WITHOUT_ROWID
  "FTS5_NO_WITHOUT_ROWID",
#endif
#if HAVE_ISNAN || SQLITE_HAVE_ISNAN
  "HAVE_ISNAN",
#endif
#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX
# if SQLITE_HOMEGROWN_RECURSIVE_MUTEX != 1
  "HOMEGROWN_RECURSIVE_MUTEX=" CTIMEOPT_VAL(SQLITE_HOMEGROWN_RECURSIVE_MUTEX),
# endif
#endif
#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS
  "IGNORE_AFP_LOCK_ERRORS",
#endif
#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS
  "IGNORE_FLOCK_LOCK_ERRORS",
#endif
#ifdef SQLITE_INLINE_MEMCPY
  "INLINE_MEMCPY",
#endif
#ifdef SQLITE_INT64_TYPE
  "INT64_TYPE",
#endif
#ifdef SQLITE_INTEGRITY_CHECK_ERROR_MAX
  "INTEGRITY_CHECK_ERROR_MAX=" CTIMEOPT_VAL(SQLITE_INTEGRITY_CHECK_ERROR_MAX),
#endif
#ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS
  "LIKE_DOESNT_MATCH_BLOBS",
#endif
#ifdef SQLITE_LOCK_TRACE
  "LOCK_TRACE",
#endif
#ifdef SQLITE_LOG_CACHE_SPILL
  "LOG_CACHE_SPILL",
#endif
#ifdef SQLITE_MALLOC_SOFT_LIMIT
  "MALLOC_SOFT_LIMIT=" CTIMEOPT_VAL(SQLITE_MALLOC_SOFT_LIMIT),
#endif
#ifdef SQLITE_MAX_ATTACHED
  "MAX_ATTACHED=" CTIMEOPT_VAL(SQLITE_MAX_ATTACHED),
#endif
#ifdef SQLITE_MAX_COLUMN
  "MAX_COLUMN=" CTIMEOPT_VAL(SQLITE_MAX_COLUMN),
#endif
#ifdef SQLITE_MAX_COMPOUND_SELECT
  "MAX_COMPOUND_SELECT=" CTIMEOPT_VAL(SQLITE_MAX_COMPOUND_SELECT),
#endif
#ifdef SQLITE_MAX_DEFAULT_PAGE_SIZE
  "MAX_DEFAULT_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_DEFAULT_PAGE_SIZE),
#endif
#ifdef SQLITE_MAX_EXPR_DEPTH
  "MAX_EXPR_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_EXPR_DEPTH),
#endif
#ifdef SQLITE_MAX_FUNCTION_ARG
  "MAX_FUNCTION_ARG=" CTIMEOPT_VAL(SQLITE_MAX_FUNCTION_ARG),
#endif
#ifdef SQLITE_MAX_LENGTH
  "MAX_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LENGTH),
#endif
#ifdef SQLITE_MAX_LIKE_PATTERN_LENGTH
  "MAX_LIKE_PATTERN_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_LIKE_PATTERN_LENGTH),
#endif
#ifdef SQLITE_MAX_MEMORY
  "MAX_MEMORY=" CTIMEOPT_VAL(SQLITE_MAX_MEMORY),
#endif
#ifdef SQLITE_MAX_MMAP_SIZE
  "MAX_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE),
#endif
#ifdef SQLITE_MAX_MMAP_SIZE_
  "MAX_MMAP_SIZE_=" CTIMEOPT_VAL(SQLITE_MAX_MMAP_SIZE_),
#endif
#ifdef SQLITE_MAX_PAGE_COUNT
  "MAX_PAGE_COUNT=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_COUNT),
#endif
#ifdef SQLITE_MAX_PAGE_SIZE
  "MAX_PAGE_SIZE=" CTIMEOPT_VAL(SQLITE_MAX_PAGE_SIZE),
#endif
#ifdef SQLITE_MAX_SCHEMA_RETRY
  "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY),
#endif
#ifdef SQLITE_MAX_SQL_LENGTH
  "MAX_SQL_LENGTH=" CTIMEOPT_VAL(SQLITE_MAX_SQL_LENGTH),
#endif
#ifdef SQLITE_MAX_TRIGGER_DEPTH
  "MAX_TRIGGER_DEPTH=" CTIMEOPT_VAL(SQLITE_MAX_TRIGGER_DEPTH),
#endif
#ifdef SQLITE_MAX_VARIABLE_NUMBER
  "MAX_VARIABLE_NUMBER=" CTIMEOPT_VAL(SQLITE_MAX_VARIABLE_NUMBER),
#endif
#ifdef SQLITE_MAX_VDBE_OP
  "MAX_VDBE_OP=" CTIMEOPT_VAL(SQLITE_MAX_VDBE_OP),
#endif
#ifdef SQLITE_MAX_WORKER_THREADS
  "MAX_WORKER_THREADS=" CTIMEOPT_VAL(SQLITE_MAX_WORKER_THREADS),
#endif
#ifdef SQLITE_MEMDEBUG
  "MEMDEBUG",
#endif
#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
  "MIXED_ENDIAN_64BIT_FLOAT",
#endif
#ifdef SQLITE_MMAP_READWRITE
  "MMAP_READWRITE",
#endif
#ifdef SQLITE_MUTEX_NOOP
  "MUTEX_NOOP",
#endif
#ifdef SQLITE_MUTEX_OMIT
  "MUTEX_OMIT",
#endif
#ifdef SQLITE_MUTEX_PTHREADS
  "MUTEX_PTHREADS",
#endif
#ifdef SQLITE_MUTEX_W32
  "MUTEX_W32",
#endif
#ifdef SQLITE_NEED_ERR_NAME
  "NEED_ERR_NAME",
#endif
#ifdef SQLITE_NO_SYNC
  "NO_SYNC",
#endif
#ifdef SQLITE_OMIT_ALTERTABLE
  "OMIT_ALTERTABLE",
#endif
#ifdef SQLITE_OMIT_ANALYZE
  "OMIT_ANALYZE",
#endif
#ifdef SQLITE_OMIT_ATTACH
  "OMIT_ATTACH",
#endif
#ifdef SQLITE_OMIT_AUTHORIZATION
  "OMIT_AUTHORIZATION",
#endif
#ifdef SQLITE_OMIT_AUTOINCREMENT
  "OMIT_AUTOINCREMENT",
#endif
#ifdef SQLITE_OMIT_AUTOINIT
  "OMIT_AUTOINIT",
#endif
#ifdef SQLITE_OMIT_AUTOMATIC_INDEX
  "OMIT_AUTOMATIC_INDEX",
#endif
#ifdef SQLITE_OMIT_AUTORESET
  "OMIT_AUTORESET",
#endif
#ifdef SQLITE_OMIT_AUTOVACUUM
  "OMIT_AUTOVACUUM",
#endif
#ifdef SQLITE_OMIT_BETWEEN_OPTIMIZATION
  "OMIT_BETWEEN_OPTIMIZATION",
#endif
#ifdef SQLITE_OMIT_BLOB_LITERAL
  "OMIT_BLOB_LITERAL",
#endif
#ifdef SQLITE_OMIT_CAST
  "OMIT_CAST",
#endif
#ifdef SQLITE_OMIT_CHECK
  "OMIT_CHECK",
#endif
#ifdef SQLITE_OMIT_COMPLETE
  "OMIT_COMPLETE",
#endif
#ifdef SQLITE_OMIT_COMPOUND_SELECT
  "OMIT_COMPOUND_SELECT",
#endif
#ifdef SQLITE_OMIT_CONFLICT_CLAUSE
  "OMIT_CONFLICT_CLAUSE",
#endif
#ifdef SQLITE_OMIT_CTE
  "OMIT_CTE",
#endif
#if defined(SQLITE_OMIT_DATETIME_FUNCS) || defined(SQLITE_OMIT_FLOATING_POINT)
  "OMIT_DATETIME_FUNCS",
#endif
#ifdef SQLITE_OMIT_DECLTYPE
  "OMIT_DECLTYPE",
#endif
#ifdef SQLITE_OMIT_DEPRECATED
  "OMIT_DEPRECATED",
#endif
#ifdef SQLITE_OMIT_DESERIALIZE
  "OMIT_DESERIALIZE",
#endif
#ifdef SQLITE_OMIT_DISKIO
  "OMIT_DISKIO",
#endif
#ifdef SQLITE_OMIT_EXPLAIN
  "OMIT_EXPLAIN",
#endif
#ifdef SQLITE_OMIT_FLAG_PRAGMAS
  "OMIT_FLAG_PRAGMAS",
#endif
#ifdef SQLITE_OMIT_FLOATING_POINT
  "OMIT_FLOATING_POINT",
#endif
#ifdef SQLITE_OMIT_FOREIGN_KEY
  "OMIT_FOREIGN_KEY",
#endif
#ifdef SQLITE_OMIT_GET_TABLE
  "OMIT_GET_TABLE",
#endif
#ifdef SQLITE_OMIT_HEX_INTEGER
  "OMIT_HEX_INTEGER",
#endif
#ifdef SQLITE_OMIT_INCRBLOB
  "OMIT_INCRBLOB",
#endif
#ifdef SQLITE_OMIT_INTEGRITY_CHECK
  "OMIT_INTEGRITY_CHECK",
#endif
#ifdef SQLITE_OMIT_INTROSPECTION_PRAGMAS
  "OMIT_INTROSPECTION_PRAGMAS",
#endif
#ifdef SQLITE_OMIT_LIKE_OPTIMIZATION
  "OMIT_LIKE_OPTIMIZATION",
#endif
#ifdef SQLITE_OMIT_LOAD_EXTENSION
  "OMIT_LOAD_EXTENSION",
#endif
#ifdef SQLITE_OMIT_LOCALTIME
  "OMIT_LOCALTIME",
#endif
#ifdef SQLITE_OMIT_LOOKASIDE
  "OMIT_LOOKASIDE",
#endif
#ifdef SQLITE_OMIT_MEMORYDB
  "OMIT_MEMORYDB",
#endif
#ifdef SQLITE_OMIT_OR_OPTIMIZATION
  "OMIT_OR_OPTIMIZATION",
#endif
#ifdef SQLITE_OMIT_PAGER_PRAGMAS
  "OMIT_PAGER_PRAGMAS",
#endif
#ifdef SQLITE_OMIT_PARSER_TRACE
  "OMIT_PARSER_TRACE",
#endif
#ifdef SQLITE_OMIT_POPEN
  "OMIT_POPEN",
#endif
#ifdef SQLITE_OMIT_PRAGMA
  "OMIT_PRAGMA",
#endif
#ifdef SQLITE_OMIT_PROGRESS_CALLBACK
  "OMIT_PROGRESS_CALLBACK",
#endif
#ifdef SQLITE_OMIT_QUICKBALANCE
  "OMIT_QUICKBALANCE",
#endif
#ifdef SQLITE_OMIT_REINDEX
  "OMIT_REINDEX",
#endif
#ifdef SQLITE_OMIT_SCHEMA_PRAGMAS
  "OMIT_SCHEMA_PRAGMAS",
#endif
#ifdef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
  "OMIT_SCHEMA_VERSION_PRAGMAS",
#endif
#ifdef SQLITE_OMIT_SHARED_CACHE
  "OMIT_SHARED_CACHE",
#endif
#ifdef SQLITE_OMIT_SHUTDOWN_DIRECTORIES
  "OMIT_SHUTDOWN_DIRECTORIES",
#endif
#ifdef SQLITE_OMIT_SUBQUERY
  "OMIT_SUBQUERY",
#endif
#ifdef SQLITE_OMIT_TCL_VARIABLE
  "OMIT_TCL_VARIABLE",
#endif
#ifdef SQLITE_OMIT_TEMPDB
  "OMIT_TEMPDB",
#endif
#ifdef SQLITE_OMIT_TEST_CONTROL
  "OMIT_TEST_CONTROL",
#endif
#ifdef SQLITE_OMIT_TRACE
# if SQLITE_OMIT_TRACE != 1
  "OMIT_TRACE=" CTIMEOPT_VAL(SQLITE_OMIT_TRACE),
# endif
#endif
#ifdef SQLITE_OMIT_TRIGGER
  "OMIT_TRIGGER",
#endif
#ifdef SQLITE_OMIT_TRUNCATE_OPTIMIZATION
  "OMIT_TRUNCATE_OPTIMIZATION",
#endif
#ifdef SQLITE_OMIT_UTF16
  "OMIT_UTF16",
#endif
#ifdef SQLITE_OMIT_VACUUM
  "OMIT_VACUUM",
#endif
#ifdef SQLITE_OMIT_VIEW
  "OMIT_VIEW",
#endif
#ifdef SQLITE_OMIT_VIRTUALTABLE
  "OMIT_VIRTUALTABLE",
#endif
#ifdef SQLITE_OMIT_WAL
  "OMIT_WAL",
#endif
#ifdef SQLITE_OMIT_WSD
  "OMIT_WSD",
#endif
#ifdef SQLITE_OMIT_XFER_OPT
  "OMIT_XFER_OPT",
#endif
#ifdef SQLITE_PCACHE_SEPARATE_HEADER
  "PCACHE_SEPARATE_HEADER",
#endif
#ifdef SQLITE_PERFORMANCE_TRACE
  "PERFORMANCE_TRACE",
#endif
#ifdef SQLITE_POWERSAFE_OVERWRITE
# if SQLITE_POWERSAFE_OVERWRITE != 1
  "POWERSAFE_OVERWRITE=" CTIMEOPT_VAL(SQLITE_POWERSAFE_OVERWRITE),
# endif
#endif
#ifdef SQLITE_PREFER_PROXY_LOCKING
  "PREFER_PROXY_LOCKING",
#endif
#ifdef SQLITE_PROXY_DEBUG
  "PROXY_DEBUG",
#endif
#ifdef SQLITE_REVERSE_UNORDERED_SELECTS
  "REVERSE_UNORDERED_SELECTS",
#endif
#ifdef SQLITE_RTREE_INT_ONLY
  "RTREE_INT_ONLY",
#endif
#ifdef SQLITE_SECURE_DELETE
  "SECURE_DELETE",
#endif
#ifdef SQLITE_SMALL_STACK
  "SMALL_STACK",
#endif
#ifdef SQLITE_SORTER_PMASZ
  "SORTER_PMASZ=" CTIMEOPT_VAL(SQLITE_SORTER_PMASZ),
#endif
#ifdef SQLITE_SOUNDEX
  "SOUNDEX",
#endif
#ifdef SQLITE_STAT4_SAMPLES
  "STAT4_SAMPLES=" CTIMEOPT_VAL(SQLITE_STAT4_SAMPLES),
#endif
#ifdef SQLITE_STMTJRNL_SPILL
  "STMTJRNL_SPILL=" CTIMEOPT_VAL(SQLITE_STMTJRNL_SPILL),
#endif
#ifdef SQLITE_SUBSTR_COMPATIBILITY
  "SUBSTR_COMPATIBILITY",
#endif
#if (!defined(SQLITE_WIN32_MALLOC) \
     && !defined(SQLITE_ZERO_MALLOC) \
     && !defined(SQLITE_MEMDEBUG) \
    ) || defined(SQLITE_SYSTEM_MALLOC)
  "SYSTEM_MALLOC",
#endif
#ifdef SQLITE_TCL
  "TCL",
#endif
#ifdef SQLITE_TEMP_STORE
  "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE),
#endif
#ifdef SQLITE_TEST
  "TEST",
#endif
#if defined(SQLITE_THREADSAFE)
  "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE),
#elif defined(THREADSAFE)
  "THREADSAFE=" CTIMEOPT_VAL(THREADSAFE),
#else
  "THREADSAFE=1",
#endif
#ifdef SQLITE_UNLINK_AFTER_CLOSE
  "UNLINK_AFTER_CLOSE",
#endif
#ifdef SQLITE_UNTESTABLE
  "UNTESTABLE",
#endif
#ifdef SQLITE_USER_AUTHENTICATION
  "USER_AUTHENTICATION",
#endif
#ifdef SQLITE_USE_ALLOCA
  "USE_ALLOCA",
#endif
#ifdef SQLITE_USE_FCNTL_TRACE
  "USE_FCNTL_TRACE",
#endif
#ifdef SQLITE_USE_URI
  "USE_URI",
#endif
#ifdef SQLITE_VDBE_COVERAGE
  "VDBE_COVERAGE",
#endif
#ifdef SQLITE_WIN32_MALLOC
  "WIN32_MALLOC",
#endif
#ifdef SQLITE_ZERO_MALLOC
  "ZERO_MALLOC",
#endif
/*
** END CODE GENERATED BY tool/mkctime.tcl
*/
};

SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){
  *pnOpt = sizeof(sqlite3azCompileOpt) / sizeof(sqlite3azCompileOpt[0]);
  return (const char**)sqlite3azCompileOpt;
}

#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */

/************** End of ctime.c ***********************************************/
/************** Begin file global.c ******************************************/
/*
** 2008 June 13
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**

#endif
  int nCursor;            /* Number of entries in apCsr */
  int pc;                 /* Program Counter in parent (calling) frame */
  int nOp;                /* Size of aOp array */
  int nMem;               /* Number of entries in aMem */
  int nChildMem;          /* Number of memory cells for child frame */
  int nChildCsr;          /* Number of cursors for child frame */
  i64 nChange;            /* Statement changes (Vdbe.nChange)     */
  i64 nDbChange;          /* Value of db->nChange */
};

/* Magic number for sanity checking on VdbeFrame objects */
#define SQLITE_FRAME_MAGIC 0x879fb71e

/*
** Return a pointer to the array of registers allocated for use

  ynVar nVar;             /* Number of entries in aVar[] */
  u32 iVdbeMagic;         /* Magic number defining state of the SQL statement */
  int nMem;               /* Number of memory locations currently allocated */
  int nCursor;            /* Number of slots in apCsr[] */
  u32 cacheCtr;           /* VdbeCursor row cache generation counter */
  int pc;                 /* The program counter */
  int rc;                 /* Value to return */
  i64 nChange;            /* Number of db changes made since last reset */
  int iStatement;         /* Statement number (or 0 if has no opened stmt) */
  i64 iCurrentTime;       /* Value of julianday('now') for this statement */
  i64 nFkConstraint;      /* Number of imm. FK constraints this VM */
  i64 nStmtDefCons;       /* Number of def. constraints when stmt started */
  i64 nStmtDefImmCons;    /* Number of def. imm constraints when stmt started */
  Mem *aMem;              /* The memory locations */
  Mem **apArg;            /* Arguments to currently executing user function */

SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem*,int);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3VdbeMemIsRowSet(const Mem*);
#endif
SQLITE_PRIVATE int sqlite3VdbeMemSetRowSet(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, u8, u8);
SQLITE_PRIVATE int sqlite3IntFloatCompare(i64,double);
SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem*);
SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*);
SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem*, int ifNull);
SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*);

    sqlite3_str_appendf(&x, "{%d:*} %!S", pItem->iCursor, pItem);
    if( pItem->pTab ){
      sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p used=%llx",
           pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab, pItem->colUsed);
    }
    if( pItem->fg.jointype & JT_LEFT ){
      sqlite3_str_appendf(&x, " LEFT-JOIN");
    }else if( pItem->fg.jointype & JT_CROSS ){
      sqlite3_str_appendf(&x, " CROSS-JOIN");
    }
    if( pItem->fg.fromDDL ){
      sqlite3_str_appendf(&x, " DDL");
    }
    if( pItem->fg.isCte ){
      sqlite3_str_appendf(&x, " CteUse=0x%p", pItem->u2.pCteUse);
    }

    case TK_VECTOR: {
      char *z = sqlite3_mprintf("VECTOR%s",zFlgs);
      sqlite3TreeViewBareExprList(pView, pExpr->x.pList, z);
      sqlite3_free(z);
      break;
    }
    case TK_SELECT_COLUMN: {
      sqlite3TreeViewLine(pView, "SELECT-COLUMN %d of [0..%d]%s",
              pExpr->iColumn, pExpr->iTable-1,
              pExpr->pRight==pExpr->pLeft ? " (SELECT-owner)" : "");
      sqlite3TreeViewSelect(pView, pExpr->pLeft->x.pSelect, 0);
      break;
    }
    case TK_IF_NULL_ROW: {
      sqlite3TreeViewLine(pView, "IF-NULL-ROW %d", pExpr->iTable);
      sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
      break;
    }
    case TK_ERROR: {
      Expr tmp;
      sqlite3TreeViewLine(pView, "ERROR");
      tmp = *pExpr;
      tmp.op = pExpr->op2;
      sqlite3TreeViewExpr(pView, &tmp, 0);
      break;
    }
    case TK_ROW: {
      if( pExpr->iColumn<=0 ){
        sqlite3TreeViewLine(pView, "First FROM table rowid");
      }else{
        sqlite3TreeViewLine(pView, "First FROM table column %d",
            pExpr->iColumn-1);
      }
      break;
    }
    default: {
      sqlite3TreeViewLine(pView, "op=%d", pExpr->op);
      break;
    }
  }
  if( zBinOp ){

    OSTRACE(("OPENX   %-3d %s 0%o\n", fd, zName, openFlags));
    assert( !isExclusive || (openFlags & O_CREAT)!=0 );
    if( fd<0 ){
      if( isNewJrnl && errno==EACCES && osAccess(zName, F_OK) ){
        /* If unable to create a journal because the directory is not
        ** writable, change the error code to indicate that. */
        rc = SQLITE_READONLY_DIRECTORY;
      }else if( errno==EEXIST ){
        rc = SQLITE_CANTOPEN_EXISTS;
      }else if( errno!=EISDIR && isReadWrite ){
        /* Failed to open the file for read/write access. Try read-only. */
        flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
        openFlags &= ~(O_RDWR|O_CREAT);
        flags |= SQLITE_OPEN_READONLY;
        openFlags |= O_RDONLY;
        isReadonly = 1;

  if( szDb<0 ) return SQLITE_MISUSE_BKPT;
  if( szBuf<0 ) return SQLITE_MISUSE_BKPT;
#endif

  sqlite3_mutex_enter(db->mutex);
  if( zSchema==0 ) zSchema = db->aDb[0].zDbSName;
  iDb = sqlite3FindDbName(db, zSchema);
  testcase( iDb==1 );
  if( iDb<2 && iDb!=0 ){
    rc = SQLITE_ERROR;
    goto end_deserialize;
  }
  zSql = sqlite3_mprintf("ATTACH x AS %Q", zSchema);
  if( zSql==0 ){
    rc = SQLITE_NOMEM;
  }else{

    KeyInfo *pKeyInfo = pCur->pKeyInfo;
    assert( nKey==(i64)(int)nKey );
    pIdxKey = sqlite3VdbeAllocUnpackedRecord(pKeyInfo);
    if( pIdxKey==0 ) return SQLITE_NOMEM_BKPT;
    sqlite3VdbeRecordUnpack(pKeyInfo, (int)nKey, pKey, pIdxKey);
    if( pIdxKey->nField==0 || pIdxKey->nField>pKeyInfo->nAllField ){
      rc = SQLITE_CORRUPT_BKPT;
    }else{
      rc = sqlite3BtreeIndexMoveto(pCur, pIdxKey, pRes);
    }
    sqlite3DbFree(pCur->pKeyInfo->db, pIdxKey);
  }else{
    pIdxKey = 0;

    rc = sqlite3BtreeTableMoveto(pCur, nKey, bias, pRes);



  }
  return rc;
}

/*
** Restore the cursor to the position it was in (or as close to as possible)
** when saveCursorPosition() was called. Note that this call deletes the

  testcase( gap==top );
  if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){
    u8 *pSpace = pageFindSlot(pPage, nByte, &rc);
    if( pSpace ){
      int g2;
      assert( pSpace+nByte<=data+pPage->pBt->usableSize );
      *pIdx = g2 = (int)(pSpace-data);
      if( g2<=gap ){
        return SQLITE_CORRUPT_PAGE(pPage);
      }else{
        return SQLITE_OK;
      }
    }else if( rc ){
      return rc;
    }

    assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
    *pRes = 1;
    rc = SQLITE_OK;
  }
  return rc;
}

/* Move the cursor so that it points to an entry in a table (a.k.a INTKEY)
** table near the key intKey.   Return a success code.




**
** If an exact match is not found, then the cursor is always
** left pointing at a leaf page which would hold the entry if it
** were present.  The cursor might point to an entry that comes
** before or after the key.
**
** An integer is written into *pRes which is the result of
** comparing the key with the entry to which the cursor is
** pointing.  The meaning of the integer written into
** *pRes is as follows:
**
**     *pRes<0      The cursor is left pointing at an entry that
**                  is smaller than intKey or if the table is empty
**                  and the cursor is therefore left point to nothing.
**
**     *pRes==0     The cursor is left pointing at an entry that
**                  exactly matches intKey.
**
**     *pRes>0      The cursor is left pointing at an entry that
**                  is larger than intKey.



*/
SQLITE_PRIVATE int sqlite3BtreeTableMoveto(
  BtCursor *pCur,          /* The cursor to be moved */

  i64 intKey,              /* The table key */
  int biasRight,           /* If true, bias the search to the high end */
  int *pRes                /* Write search results here */
){
  int rc;


  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( pRes );
  assert( pCur->pKeyInfo==0 );
  assert( pCur->eState!=CURSOR_VALID || pCur->curIntKey!=0 );

  /* If the cursor is already positioned at the point we are trying
  ** to move to, then just return without doing any work */

  if( pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0 ){

    if( pCur->info.nKey==intKey ){
      *pRes = 0;
      return SQLITE_OK;
    }
    if( pCur->info.nKey<intKey ){
      if( (pCur->curFlags & BTCF_AtLast)!=0 ){
        *pRes = -1;

    }
  }

#ifdef SQLITE_DEBUG
  pCur->pBtree->nSeek++;   /* Performance measurement during testing */
#endif

  rc = moveToRoot(pCur);
  if( rc ){
    if( rc==SQLITE_EMPTY ){
      assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
      *pRes = -1;
      return SQLITE_OK;
    }
    return rc;
  }
  assert( pCur->pPage );
  assert( pCur->pPage->isInit );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->pPage->nCell > 0 );
  assert( pCur->iPage==0 || pCur->apPage[0]->intKey==pCur->curIntKey );
  assert( pCur->curIntKey );

  for(;;){
    int lwr, upr, idx, c;
    Pgno chldPg;
    MemPage *pPage = pCur->pPage;
    u8 *pCell;                          /* Pointer to current cell in pPage */

    /* pPage->nCell must be greater than zero. If this is the root-page
    ** the cursor would have been INVALID above and this for(;;) loop
    ** not run. If this is not the root-page, then the moveToChild() routine
    ** would have already detected db corruption. Similarly, pPage must
    ** be the right kind (index or table) of b-tree page. Otherwise
    ** a moveToChild() or moveToRoot() call would have detected corruption.  */
    assert( pPage->nCell>0 );
    assert( pPage->intKey );
    lwr = 0;
    upr = pPage->nCell-1;
    assert( biasRight==0 || biasRight==1 );
    idx = upr>>(1-biasRight); /* idx = biasRight ? upr : (lwr+upr)/2; */
    pCur->ix = (u16)idx;
    for(;;){
      i64 nCellKey;
      pCell = findCellPastPtr(pPage, idx);
      if( pPage->intKeyLeaf ){
        while( 0x80 <= *(pCell++) ){
          if( pCell>=pPage->aDataEnd ){
            return SQLITE_CORRUPT_PAGE(pPage);
          }
        }
      }
      getVarint(pCell, (u64*)&nCellKey);
      if( nCellKey<intKey ){
        lwr = idx+1;
        if( lwr>upr ){ c = -1; break; }
      }else if( nCellKey>intKey ){
        upr = idx-1;
        if( lwr>upr ){ c = +1; break; }
      }else{
        assert( nCellKey==intKey );
        pCur->ix = (u16)idx;
        if( !pPage->leaf ){
          lwr = idx;
          goto moveto_table_next_layer;
        }else{
          pCur->curFlags |= BTCF_ValidNKey;
          pCur->info.nKey = nCellKey;
          pCur->info.nSize = 0;
          *pRes = 0;
          return SQLITE_OK;
        }
      }
      assert( lwr+upr>=0 );
      idx = (lwr+upr)>>1;  /* idx = (lwr+upr)/2; */
    }
    assert( lwr==upr+1 || !pPage->leaf );
    assert( pPage->isInit );
    if( pPage->leaf ){
      assert( pCur->ix<pCur->pPage->nCell );
      pCur->ix = (u16)idx;
      *pRes = c;
      rc = SQLITE_OK;
      goto moveto_table_finish;
    }
moveto_table_next_layer:
    if( lwr>=pPage->nCell ){
      chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]);
    }else{
      chldPg = get4byte(findCell(pPage, lwr));
    }
    pCur->ix = (u16)lwr;
    rc = moveToChild(pCur, chldPg);
    if( rc ) break;
  }
moveto_table_finish:
  pCur->info.nSize = 0;
  assert( (pCur->curFlags & BTCF_ValidOvfl)==0 );
  return rc;
}

/* Move the cursor so that it points to an entry in an index table
** near the key pIdxKey.   Return a success code.
**
** If an exact match is not found, then the cursor is always
** left pointing at a leaf page which would hold the entry if it
** were present.  The cursor might point to an entry that comes
** before or after the key.
**
** An integer is written into *pRes which is the result of
** comparing the key with the entry to which the cursor is
** pointing.  The meaning of the integer written into
** *pRes is as follows:
**
**     *pRes<0      The cursor is left pointing at an entry that
**                  is smaller than pIdxKey or if the table is empty
**                  and the cursor is therefore left point to nothing.
**
**     *pRes==0     The cursor is left pointing at an entry that
**                  exactly matches pIdxKey.
**
**     *pRes>0      The cursor is left pointing at an entry that
**                  is larger than pIdxKey.
**
** The pIdxKey->eqSeen field is set to 1 if there
** exists an entry in the table that exactly matches pIdxKey.
*/
SQLITE_PRIVATE int sqlite3BtreeIndexMoveto(
  BtCursor *pCur,          /* The cursor to be moved */
  UnpackedRecord *pIdxKey, /* Unpacked index key */
  int *pRes                /* Write search results here */
){
  int rc;
  RecordCompare xRecordCompare;

  assert( cursorOwnsBtShared(pCur) );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( pRes );
  assert( pCur->pKeyInfo!=0 );

#ifdef SQLITE_DEBUG
  pCur->pBtree->nSeek++;   /* Performance measurement during testing */
#endif

  xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
  pIdxKey->errCode = 0;
  assert( pIdxKey->default_rc==1
       || pIdxKey->default_rc==0
       || pIdxKey->default_rc==-1
  );




  rc = moveToRoot(pCur);
  if( rc ){
    if( rc==SQLITE_EMPTY ){
      assert( pCur->pgnoRoot==0 || pCur->pPage->nCell==0 );
      *pRes = -1;
      return SQLITE_OK;

    ** would have already detected db corruption. Similarly, pPage must
    ** be the right kind (index or table) of b-tree page. Otherwise
    ** a moveToChild() or moveToRoot() call would have detected corruption.  */
    assert( pPage->nCell>0 );
    assert( pPage->intKey==(pIdxKey==0) );
    lwr = 0;
    upr = pPage->nCell-1;

    idx = upr>>1; /* idx = (lwr+upr)/2; */
    pCur->ix = (u16)idx;




































    for(;;){
      int nCell;  /* Size of the pCell cell in bytes */
      pCell = findCellPastPtr(pPage, idx);

      /* The maximum supported page-size is 65536 bytes. This means that
      ** the maximum number of record bytes stored on an index B-Tree
      ** page is less than 16384 bytes and may be stored as a 2-byte
      ** varint. This information is used to attempt to avoid parsing
      ** the entire cell by checking for the cases where the record is
      ** stored entirely within the b-tree page by inspecting the first
      ** 2 bytes of the cell.
      */
      nCell = pCell[0];
      if( nCell<=pPage->max1bytePayload ){
        /* This branch runs if the record-size field of the cell is a
        ** single byte varint and the record fits entirely on the main
        ** b-tree page.  */
        testcase( pCell+nCell+1==pPage->aDataEnd );
        c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
      }else if( !(pCell[1] & 0x80)
        && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal
      ){
        /* The record-size field is a 2 byte varint and the record
        ** fits entirely on the main b-tree page.  */
        testcase( pCell+nCell+2==pPage->aDataEnd );
        c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
      }else{
        /* The record flows over onto one or more overflow pages. In
        ** this case the whole cell needs to be parsed, a buffer allocated
        ** and accessPayload() used to retrieve the record into the
        ** buffer before VdbeRecordCompare() can be called.
        **
        ** If the record is corrupt, the xRecordCompare routine may read
        ** up to two varints past the end of the buffer. An extra 18
        ** bytes of padding is allocated at the end of the buffer in
        ** case this happens.  */
        void *pCellKey;
        u8 * const pCellBody = pCell - pPage->childPtrSize;
        const int nOverrun = 18;  /* Size of the overrun padding */
        pPage->xParseCell(pPage, pCellBody, &pCur->info);
        nCell = (int)pCur->info.nKey;
        testcase( nCell<0 );   /* True if key size is 2^32 or more */
        testcase( nCell==0 );  /* Invalid key size:  0x80 0x80 0x00 */
        testcase( nCell==1 );  /* Invalid key size:  0x80 0x80 0x01 */
        testcase( nCell==2 );  /* Minimum legal index key size */
        if( nCell<2 || nCell/pCur->pBt->usableSize>pCur->pBt->nPage ){
          rc = SQLITE_CORRUPT_PAGE(pPage);
          goto moveto_index_finish;
        }
        pCellKey = sqlite3Malloc( nCell+nOverrun );
        if( pCellKey==0 ){
          rc = SQLITE_NOMEM_BKPT;
          goto moveto_index_finish;
        }
        pCur->ix = (u16)idx;
        rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0);
        memset(((u8*)pCellKey)+nCell,0,nOverrun); /* Fix uninit warnings */
        pCur->curFlags &= ~BTCF_ValidOvfl;
        if( rc ){
          sqlite3_free(pCellKey);
          goto moveto_index_finish;
        }
        c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey);
        sqlite3_free(pCellKey);
      }
      assert(
          (pIdxKey->errCode!=SQLITE_CORRUPT || c==0)
       && (pIdxKey->errCode!=SQLITE_NOMEM || pCur->pBtree->db->mallocFailed)
      );
      if( c<0 ){
        lwr = idx+1;
      }else if( c>0 ){
        upr = idx-1;
      }else{
        assert( c==0 );
        *pRes = 0;
        rc = SQLITE_OK;
        pCur->ix = (u16)idx;
        if( pIdxKey->errCode ) rc = SQLITE_CORRUPT_BKPT;
        goto moveto_index_finish;
      }
      if( lwr>upr ) break;
      assert( lwr+upr>=0 );
      idx = (lwr+upr)>>1;  /* idx = (lwr+upr)/2 */

    }
    assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) );
    assert( pPage->isInit );
    if( pPage->leaf ){
      assert( pCur->ix<pCur->pPage->nCell );
      pCur->ix = (u16)idx;
      *pRes = c;
      rc = SQLITE_OK;
      goto moveto_index_finish;
    }

    if( lwr>=pPage->nCell ){
      chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]);
    }else{
      chldPg = get4byte(findCell(pPage, lwr));
    }
    pCur->ix = (u16)lwr;
    rc = moveToChild(pCur, chldPg);
    if( rc ) break;
  }
moveto_index_finish:
  pCur->info.nSize = 0;
  assert( (pCur->curFlags & BTCF_ValidOvfl)==0 );
  return rc;
}


/*

    if( apOld[i]->nFree<0 ){
      rc = btreeComputeFreeSpace(apOld[i]);
      if( rc ){
        memset(apOld, 0, (i)*sizeof(MemPage*));
        goto balance_cleanup;
      }
    }
    nMaxCells += apOld[i]->nCell + ArraySize(pParent->apOvfl);
    if( (i--)==0 ) break;

    if( pParent->nOverflow && i+nxDiv==pParent->aiOvfl[0] ){
      apDiv[i] = pParent->apOvfl[0];
      pgno = get4byte(apDiv[i]);
      szNew[i] = pParent->xCellSize(pParent, apDiv[i]);
      pParent->nOverflow = 0;

      }
      dropCell(pParent, i+nxDiv-pParent->nOverflow, szNew[i], &rc);
    }
  }

  /* Make nMaxCells a multiple of 4 in order to preserve 8-byte
  ** alignment */

  nMaxCells = (nMaxCells + 3)&~3;

  /*
  ** Allocate space for memory structures
  */
  szScratch =
       nMaxCells*sizeof(u8*)                       /* b.apCell */

  for(i=0; i<k; i++){
    MemPage *pNew;
    if( i<nOld ){
      pNew = apNew[i] = apOld[i];
      apOld[i] = 0;
      rc = sqlite3PagerWrite(pNew->pDbPage);
      nNew++;
      if( sqlite3PagerPageRefcount(pNew->pDbPage)!=1+(i==(iParentIdx-nxDiv))
       && rc==SQLITE_OK
      ){
        rc = SQLITE_CORRUPT_BKPT;
      }
      if( rc ) goto balance_cleanup;
    }else{
      assert( i>0 );
      rc = allocateBtreePage(pBt, &pNew, &pgno, (bBulk ? 1 : pgno), 0);
      if( rc ) goto balance_cleanup;

      }
      assert( loc==0 );
    }else if( loc==0 ){
      /* The cursor is *not* pointing to the cell to be overwritten, nor
      ** to an adjacent cell.  Move the cursor so that it is pointing either
      ** to the cell to be overwritten or an adjacent cell.
      */
      rc = sqlite3BtreeTableMoveto(pCur, pX->nKey,
               (flags & BTREE_APPEND)!=0, &loc);
      if( rc ) return rc;
    }
  }else{
    /* This is an index or a WITHOUT ROWID table */

    /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing
    ** to a row with the same key as the new entry being inserted.

    if( loc==0 && (flags & BTREE_SAVEPOSITION)==0 ){
      if( pX->nMem ){
        UnpackedRecord r;
        r.pKeyInfo = pCur->pKeyInfo;
        r.aMem = pX->aMem;
        r.nField = pX->nMem;
        r.default_rc = 0;



        r.eqSeen = 0;
        rc = sqlite3BtreeIndexMoveto(pCur, &r, &loc);
      }else{
        rc = btreeMoveto(pCur, pX->pKey, pX->nKey,
                    (flags & BTREE_APPEND)!=0, &loc);
      }
      if( rc ) return rc;
    }

    /* If the cursor is currently pointing to an entry to be overwritten
    ** and the new content is the same as as the old, then use the
    ** overwrite optimization.

** Erase the given database page and all its children.  Return
** the page to the freelist.
*/
static int clearDatabasePage(
  BtShared *pBt,           /* The BTree that contains the table */
  Pgno pgno,               /* Page number to clear */
  int freePageFlag,        /* Deallocate page if true */
  i64 *pnChange            /* Add number of Cells freed to this counter */
){
  MemPage *pPage;
  int rc;
  unsigned char *pCell;
  int i;
  int hdr;
  CellInfo info;

    }
    BTREE_CLEAR_CELL(rc, pPage, pCell, info);
    if( rc ) goto cleardatabasepage_out;
  }
  if( !pPage->leaf ){
    rc = clearDatabasePage(pBt, get4byte(&pPage->aData[hdr+8]), 1, pnChange);
    if( rc ) goto cleardatabasepage_out;
    if( pPage->intKey ) pnChange = 0;
  }
  if( pnChange ){
    testcase( !pPage->intKey );
    *pnChange += pPage->nCell;
  }
  if( freePageFlag ){
    freePage(pPage, &rc);

** This routine will fail with SQLITE_LOCKED if there are any open
** read cursors on the table.  Open write cursors are moved to the
** root of the table.
**
** If pnChange is not NULL, then the integer value pointed to by pnChange
** is incremented by the number of entries in the table.
*/
SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree *p, int iTable, i64 *pnChange){
  int rc;
  BtShared *pBt = p->pBt;
  sqlite3BtreeEnter(p);
  assert( p->inTrans==TRANS_WRITE );

  rc = saveAllCursors(pBt, (Pgno)iTable, 0);

  int res, rc;
#ifdef SQLITE_TEST
  extern int sqlite3_search_count;
#endif
  assert( p->deferredMoveto );
  assert( p->isTable );
  assert( p->eCurType==CURTYPE_BTREE );
  rc = sqlite3BtreeTableMoveto(p->uc.pCursor, p->movetoTarget, 0, &res);
  if( rc ) return rc;
  if( res!=0 ) return SQLITE_CORRUPT_BKPT;
#ifdef SQLITE_TEST
  sqlite3_search_count++;
#endif
  p->deferredMoveto = 0;
  p->cacheStatus = CACHE_STALE;

}

/*
** Do a comparison between a 64-bit signed integer and a 64-bit floating-point
** number.  Return negative, zero, or positive if the first (i64) is less than,
** equal to, or greater than the second (double).
*/
SQLITE_PRIVATE int sqlite3IntFloatCompare(i64 i, double r){
  if( sizeof(LONGDOUBLE_TYPE)>8 ){
    LONGDOUBLE_TYPE x = (LONGDOUBLE_TYPE)i;
    testcase( x<r );
    testcase( x>r );
    testcase( x==r );
    if( x<r ) return -1;
    if( x>r ) return +1;  /*NO_TEST*/ /* work around bugs in gcov */

  return SQLITE_OK;
}

/*
** This routine sets the value to be returned by subsequent calls to
** sqlite3_changes() on the database handle 'db'.
*/
SQLITE_PRIVATE void sqlite3VdbeSetChanges(sqlite3 *db, i64 nChange){
  assert( sqlite3_mutex_held(db->mutex) );
  db->nChange = nChange;
  db->nTotalChange += nChange;
}

/*
** Set a flag in the vdbe to update the change counter when it is finalised

  Db *pDb;

  assert( pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ );
  assert( pOp->p4type==P4_KEYINFO );
  pCur = p->apCsr[pOp->p1];
  if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){
    assert( pCur->iDb==pOp->p3 );      /* Guaranteed by the code generator */
    assert( pCur->eCurType==CURTYPE_BTREE );
    sqlite3BtreeClearCursor(pCur->uc.pCursor);
    goto open_cursor_set_hints;
  }
  /* If the cursor is not currently open or is open on a different
  ** index, then fall through into OP_OpenRead to force a reopen */
case OP_OpenRead:
case OP_OpenWrite:

    iKey = sqlite3VdbeIntValue(pIn3); /* Get the integer key value */
    newType = pIn3->flags; /* Record the type after applying numeric affinity */
    pIn3->flags = flags3;  /* But convert the type back to its original */

    /* If the P3 value could not be converted into an integer without
    ** loss of information, then special processing is required... */
    if( (newType & (MEM_Int|MEM_IntReal))==0 ){
      int c;
      if( (newType & MEM_Real)==0 ){
        if( (newType & MEM_Null) || oc>=OP_SeekGE ){
          VdbeBranchTaken(1,2);
          goto jump_to_p2;
        }else{
          rc = sqlite3BtreeLast(pC->uc.pCursor, &res);
          if( rc!=SQLITE_OK ) goto abort_due_to_error;
          goto seek_not_found;
        }

      }
      c = sqlite3IntFloatCompare(iKey, pIn3->u.r);

      /* If the approximation iKey is larger than the actual real search
      ** term, substitute >= for > and < for <=. e.g. if the search term
      ** is 4.9 and the integer approximation 5:
      **
      **        (x >  4.9)    ->     (x >= 5)
      **        (x <= 4.9)    ->     (x <  5)
      */
      if( c>0 ){
        assert( OP_SeekGE==(OP_SeekGT-1) );
        assert( OP_SeekLT==(OP_SeekLE-1) );
        assert( (OP_SeekLE & 0x0001)==(OP_SeekGT & 0x0001) );
        if( (oc & 0x0001)==(OP_SeekGT & 0x0001) ) oc--;
      }

      /* If the approximation iKey is smaller than the actual real search
      ** term, substitute <= for < and > for >=.  */
      else if( c<0 ){
        assert( OP_SeekLE==(OP_SeekLT+1) );
        assert( OP_SeekGT==(OP_SeekGE+1) );
        assert( (OP_SeekLT & 0x0001)==(OP_SeekGE & 0x0001) );
        if( (oc & 0x0001)==(OP_SeekLT & 0x0001) ) oc++;
      }
    }
    rc = sqlite3BtreeTableMoveto(pC->uc.pCursor, (u64)iKey, 0, &res);
    pC->movetoTarget = iKey;  /* Used by OP_Delete */
    if( rc!=SQLITE_OK ){
      goto abort_due_to_error;
    }
  }else{
    /* For a cursor with the OPFLAG_SEEKEQ/BTREE_SEEK_EQ hint, only the
    ** OP_SeekGE and OP_SeekLE opcodes are allowed, and these must be

    assert( oc!=OP_SeekLT || r.default_rc==+1 );

    r.aMem = &aMem[pOp->p3];
#ifdef SQLITE_DEBUG
    { int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
#endif
    r.eqSeen = 0;
    rc = sqlite3BtreeIndexMoveto(pC->uc.pCursor, &r, &res);
    if( rc!=SQLITE_OK ){
      goto abort_due_to_error;
    }
    if( eqOnly && r.eqSeen==0 ){
      assert( res!=0 );
      goto seek_not_found;
    }

    for(ii=0; ii<pIdxKey->nField; ii++){
      if( pIdxKey->aMem[ii].flags & MEM_Null ){
        takeJump = 1;
        break;
      }
    }
  }
  rc = sqlite3BtreeIndexMoveto(pC->uc.pCursor, pIdxKey, &res);
  if( pFree ) sqlite3DbFreeNN(db, pFree);
  if( rc!=SQLITE_OK ){
    goto abort_due_to_error;
  }
  pC->seekResult = res;
  alreadyExists = (res==0);
  pC->nullRow = 1-alreadyExists;

  if( pOp->opcode==OP_SeekRowid ) pC->seekOp = OP_SeekRowid;
#endif
  assert( pC->isTable );
  assert( pC->eCurType==CURTYPE_BTREE );
  pCrsr = pC->uc.pCursor;
  assert( pCrsr!=0 );
  res = 0;
  rc = sqlite3BtreeTableMoveto(pCrsr, iKey, 0, &res);
  assert( rc==SQLITE_OK || res==0 );
  pC->movetoTarget = iKey;  /* Used by OP_Delete */
  pC->nullRow = 0;
  pC->cacheStatus = CACHE_STALE;
  pC->deferredMoveto = 0;
  VdbeBranchTaken(res!=0,2);
  pC->seekResult = res;

      ** it finds one that is not previously used. */
      assert( pOp->p3==0 );  /* We cannot be in random rowid mode if this is
                             ** an AUTOINCREMENT table. */
      cnt = 0;
      do{
        sqlite3_randomness(sizeof(v), &v);
        v &= (MAX_ROWID>>1); v++;  /* Ensure that v is greater than zero */
      }while(  ((rc = sqlite3BtreeTableMoveto(pC->uc.pCursor, (u64)v,
                                                 0, &res))==SQLITE_OK)
            && (res==0)
            && (++cnt<100));
      if( rc ) goto abort_due_to_error;
      if( res==0 ){
        rc = SQLITE_FULL;   /* IMP: R-38219-53002 */
        goto abort_due_to_error;

  sqlite3VdbeIncrWriteCounter(p, pC);
  pCrsr = pC->uc.pCursor;
  assert( pCrsr!=0 );
  r.pKeyInfo = pC->pKeyInfo;
  r.nField = (u16)pOp->p3;
  r.default_rc = 0;
  r.aMem = &aMem[pOp->p2];
  rc = sqlite3BtreeIndexMoveto(pCrsr, &r, &res);
  if( rc ) goto abort_due_to_error;
  if( res==0 ){
    rc = sqlite3BtreeDelete(pCrsr, BTREE_AUXDELETE);
    if( rc ) goto abort_due_to_error;
  }else if( pOp->p5 ){
    rc = sqlite3ReportError(SQLITE_CORRUPT_INDEX, __LINE__, "index corruption");
    goto abort_due_to_error;

** by the number of rows in the table being cleared. If P3 is greater
** than zero, then the value stored in register P3 is also incremented
** by the number of rows in the table being cleared.
**
** See also: Destroy
*/
case OP_Clear: {
  i64 nChange;

  sqlite3VdbeIncrWriteCounter(p, 0);
  nChange = 0;
  assert( p->readOnly==0 );
  assert( DbMaskTest(p->btreeMask, pOp->p2) );
  rc = sqlite3BtreeClearTable(db->aDb[pOp->p2].pBt, (u32)pOp->p1, &nChange);
  if( pOp->p3 ){

    SrcList *pSrcList = pNC->pSrcList;

    if( pSrcList ){
      for(i=0, pItem=pSrcList->a; i<pSrcList->nSrc; i++, pItem++){
        u8 hCol;
        pTab = pItem->pTab;
        assert( pTab!=0 && pTab->zName!=0 );
        assert( pTab->nCol>0 || pParse->nErr );
        if( pItem->pSelect && (pItem->pSelect->selFlags & SF_NestedFrom)!=0 ){
          int hit = 0;
          pEList = pItem->pSelect->pEList;
          for(j=0; j<pEList->nExpr; j++){
            if( sqlite3MatchEName(&pEList->a[j], zCol, zTab, zDb) ){
              cnt++;
              cntTab = 2;

          if( sqlite3StrICmp(zTabName, zTab)!=0 ){
            continue;
          }
          if( IN_RENAME_OBJECT && pItem->zAlias ){
            sqlite3RenameTokenRemap(pParse, 0, (void*)&pExpr->y.pTab);
          }
        }



        hCol = sqlite3StrIHash(zCol);
        for(j=0, pCol=pTab->aCol; j<pTab->nCol; j++, pCol++){
          if( pCol->hName==hCol && sqlite3StrICmp(pCol->zName, zCol)==0 ){
            /* If there has been exactly one prior match and this match
            ** is for the right-hand table of a NATURAL JOIN or is in a
            ** USING clause, then skip this match.
            */
            if( cnt==1 ){
              if( pItem->fg.jointype & JT_NATURAL ) continue;
              if( nameInUsingClause(pItem->pUsing, zCol) ) continue;
            }
            cnt++;
            pMatch = pItem;
            /* Substitute the rowid (column -1) for the INTEGER PRIMARY KEY */
            pExpr->iColumn = j==pTab->iPKey ? -1 : (i16)j;
            break;
          }
        }
        if( 0==cnt && VisibleRowid(pTab) ){
          cntTab++;
          pMatch = pItem;
        }
      }
      if( pMatch ){
        pExpr->iTable = pMatch->iCursor;
        pExpr->y.pTab = pMatch->pTab;
        /* RIGHT JOIN not (yet) supported */
        assert( (pMatch->fg.jointype & JT_RIGHT)==0 );

    ** Perhaps the name is a reference to the ROWID
    */
    if( cnt==0
     && cntTab==1
     && pMatch
     && (pNC->ncFlags & (NC_IdxExpr|NC_GenCol))==0
     && sqlite3IsRowid(zCol)
     && ALWAYS(VisibleRowid(pMatch->pTab))
    ){
      cnt = 1;
      pExpr->iColumn = -1;
      pExpr->affExpr = SQLITE_AFF_INTEGER;
    }

    /*

          while( pNC2 && !sqlite3FunctionUsesThisSrc(pExpr, pNC2->pSrcList) ){
            pExpr->op2++;
            pNC2 = pNC2->pNext;
          }
          assert( pDef!=0 || IN_RENAME_OBJECT );
          if( pNC2 && pDef ){
            assert( SQLITE_FUNC_MINMAX==NC_MinMaxAgg );
            assert( SQLITE_FUNC_ANYORDER==NC_OrderAgg );
            testcase( (pDef->funcFlags & SQLITE_FUNC_MINMAX)!=0 );
            testcase( (pDef->funcFlags & SQLITE_FUNC_ANYORDER)!=0 );
            pNC2->ncFlags |= NC_HasAgg
              | ((pDef->funcFlags^SQLITE_FUNC_ANYORDER)
                  & (SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER));
          }
        }
        pNC->ncFlags |= savedAllowFlags;
      }
      /* FIX ME:  Compute pExpr->affinity based on the expected return
      ** type of the function
      */

      Select *pSub = p->pSrc->a[0].pSelect;
      assert( p->pSrc->nSrc==1 && p->pOrderBy );
      assert( pSub->pPrior && pSub->pOrderBy==0 );
      pSub->pOrderBy = p->pOrderBy;
      p->pOrderBy = 0;
    }

    /* Recursively resolve names in all subqueries in the FROM clause
    */
    for(i=0; i<p->pSrc->nSrc; i++){
      SrcItem *pItem = &p->pSrc->a[i];
      if( pItem->pSelect && (pItem->pSelect->selFlags & SF_Resolved)==0 ){
        int nRef = pOuterNC ? pOuterNC->nRef : 0;
        const char *zSavedContext = pParse->zAuthContext;

    /* If there are no aggregate functions in the result-set, and no GROUP BY
    ** expression, do not allow aggregates in any of the other expressions.
    */
    assert( (p->selFlags & SF_Aggregate)==0 );
    pGroupBy = p->pGroupBy;
    if( pGroupBy || (sNC.ncFlags & NC_HasAgg)!=0 ){
      assert( NC_MinMaxAgg==SF_MinMaxAgg );
      assert( NC_OrderAgg==SF_OrderByReqd );
      p->selFlags |= SF_Aggregate | (sNC.ncFlags&(NC_MinMaxAgg|NC_OrderAgg));
    }else{
      sNC.ncFlags &= ~NC_AllowAgg;
    }

    /* Add the output column list to the name-context before parsing the
    ** other expressions in the SELECT statement. This is so that
    ** expressions in the WHERE clause (etc.) can refer to expressions by

  NameContext *pNC,       /* Namespace to resolve expressions in. */
  Expr *pExpr             /* The expression to be analyzed. */
){
  int savedHasAgg;
  Walker w;

  if( pExpr==0 ) return SQLITE_OK;
  savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
  pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
  w.pParse = pNC->pParse;
  w.xExprCallback = resolveExprStep;
  w.xSelectCallback = (pNC->ncFlags & NC_NoSelect) ? 0 : resolveSelectStep;
  w.xSelectCallback2 = 0;
  w.u.pNC = pNC;
#if SQLITE_MAX_EXPR_DEPTH>0
  w.pParse->nHeight += pExpr->nHeight;

  Walker w;
  if( pList==0 ) return WRC_Continue;
  w.pParse = pNC->pParse;
  w.xExprCallback = resolveExprStep;
  w.xSelectCallback = resolveSelectStep;
  w.xSelectCallback2 = 0;
  w.u.pNC = pNC;
  savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
  pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
  for(i=0; i<pList->nExpr; i++){
    Expr *pExpr = pList->a[i].pExpr;
    if( pExpr==0 ) continue;
#if SQLITE_MAX_EXPR_DEPTH>0
    w.pParse->nHeight += pExpr->nHeight;
    if( sqlite3ExprCheckHeight(w.pParse, w.pParse->nHeight) ){
      return WRC_Abort;
    }
#endif
    sqlite3WalkExpr(&w, pExpr);
#if SQLITE_MAX_EXPR_DEPTH>0
    w.pParse->nHeight -= pExpr->nHeight;
#endif
    assert( EP_Agg==NC_HasAgg );
    assert( EP_Win==NC_HasWin );
    testcase( pNC->ncFlags & NC_HasAgg );
    testcase( pNC->ncFlags & NC_HasWin );
    if( pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg) ){
      ExprSetProperty(pExpr, pNC->ncFlags & (NC_HasAgg|NC_HasWin) );
      savedHasAgg |= pNC->ncFlags &
                          (NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
      pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin|NC_OrderAgg);
    }
    if( w.pParse->nErr>0 ) return WRC_Abort;
  }
  pNC->ncFlags |= savedHasAgg;
  return WRC_Continue;
}

  if( op==TK_CAST ){
    assert( !ExprHasProperty(pExpr, EP_IntValue) );
    return sqlite3AffinityType(pExpr->u.zToken, 0);
  }
#endif
  if( op==TK_SELECT_COLUMN ){
    assert( pExpr->pLeft->flags&EP_xIsSelect );
    assert( pExpr->iColumn < pExpr->iTable );
    assert( pExpr->iTable==pExpr->pLeft->x.pSelect->pEList->nExpr );
    return sqlite3ExprAffinity(
        pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr
    );
  }
  if( op==TK_VECTOR ){
    return sqlite3ExprAffinity(pExpr->x.pList->a[0].pExpr);
  }

** A trick to cause a TK_SELECT pVector to be deleted together with
** the returned Expr object is to attach the pVector to the pRight field
** of the returned TK_SELECT_COLUMN Expr object.
*/
SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(
  Parse *pParse,       /* Parsing context */
  Expr *pVector,       /* The vector.  List of expressions or a sub-SELECT */
  int iField,          /* Which column of the vector to return */
  int nField           /* Total number of columns in the vector */
){
  Expr *pRet;
  if( pVector->op==TK_SELECT ){
    assert( pVector->flags & EP_xIsSelect );
    /* The TK_SELECT_COLUMN Expr node:
    **
    ** pLeft:           pVector containing TK_SELECT.  Not deleted.

    ** can be attached to pRight to cause this node to take ownership of
    ** pVector.  Typically there will be multiple TK_SELECT_COLUMN nodes
    ** with the same pLeft pointer to the pVector, but only one of them
    ** will own the pVector.
    */
    pRet = sqlite3PExpr(pParse, TK_SELECT_COLUMN, 0, 0);
    if( pRet ){
      pRet->iTable = nField;
      pRet->iColumn = iField;
      pRet->pLeft = pVector;
    }

  }else{
    if( pVector->op==TK_VECTOR ) pVector = pVector->x.pList->a[iField].pExpr;
    pRet = sqlite3ExprDup(pParse->db, pVector, 0);
    sqlite3RenameTokenRemap(pParse, pRet, pVector);
  }
  return pRet;
}

    sqlite3ExprSetHeightAndFlags(pParse, pExpr);
  }else{
    assert( pParse->db->mallocFailed );
    sqlite3SelectDelete(pParse->db, pSelect);
  }
}

/*
** Expression list pEList is a list of vector values. This function
** converts the contents of pEList to a VALUES(...) Select statement
** returning 1 row for each element of the list. For example, the
** expression list:
**
**   ( (1,2), (3,4) (5,6) )
**
** is translated to the equivalent of:
**
**   VALUES(1,2), (3,4), (5,6)
**
** Each of the vector values in pEList must contain exactly nElem terms.
** If a list element that is not a vector or does not contain nElem terms,
** an error message is left in pParse.
**
** This is used as part of processing IN(...) expressions with a list
** of vectors on the RHS. e.g. "... IN ((1,2), (3,4), (5,6))".
*/
SQLITE_PRIVATE Select *sqlite3ExprListToValues(Parse *pParse, int nElem, ExprList *pEList){
  int ii;
  Select *pRet = 0;
  assert( nElem>1 );
  for(ii=0; ii<pEList->nExpr; ii++){
    Select *pSel;
    Expr *pExpr = pEList->a[ii].pExpr;
    int nExprElem = (pExpr->op==TK_VECTOR ? pExpr->x.pList->nExpr : 1);
    if( nExprElem!=nElem ){
      sqlite3ErrorMsg(pParse, "IN(...) element has %d term%s - expected %d",
          nExprElem, nExprElem>1?"s":"", nElem
      );
      break;
    }
    pSel = sqlite3SelectNew(pParse, pExpr->x.pList, 0, 0, 0, 0, 0, SF_Values,0);
    pExpr->x.pList = 0;
    if( pSel ){
      if( pRet ){
        pSel->op = TK_ALL;
        pSel->pPrior = pRet;
      }
      pRet = pSel;
    }
  }

  if( pRet && pRet->pPrior ){
    pRet->selFlags |= SF_MultiValue;
  }
  sqlite3ExprListDelete(pParse->db, pEList);
  return pRet;
}

/*
** Join two expressions using an AND operator.  If either expression is
** NULL, then just return the other expression.
**
** If one side or the other of the AND is known to be false, then instead
** of returning an AND expression, just return a constant expression with

  sqlite3 *db = pParse->db;
  assert( pToken );
  pNew = sqlite3ExprAlloc(db, TK_FUNCTION, pToken, 1);
  if( pNew==0 ){
    sqlite3ExprListDelete(db, pList); /* Avoid memory leak when malloc fails */
    return 0;
  }
  if( pList
   && pList->nExpr > pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG]
   && !pParse->nested
  ){
    sqlite3ErrorMsg(pParse, "too many arguments on function %T", pToken);
  }
  pNew->x.pList = pList;
  ExprSetProperty(pNew, EP_HasFunc);
  assert( !ExprHasProperty(pNew, EP_xIsSelect) );
  sqlite3ExprSetHeightAndFlags(pParse, pNew);
  if( eDistinct==SF_Distinct ) ExprSetProperty(pNew, EP_Distinct);

      if( pzBuffer ){
        *pzBuffer = zAlloc;
      }
    }else{
      if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){
        if( pNew->op==TK_SELECT_COLUMN ){
          pNew->pLeft = p->pLeft;

          assert( p->pRight==0  || p->pRight==p->pLeft
                                || ExprHasProperty(p->pLeft, EP_Subquery) );
        }else{
          pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0);
        }
        pNew->pRight = sqlite3ExprDup(db, p->pRight, 0);
      }

  assert( flags==0 || flags==EXPRDUP_REDUCE );
  return p ? exprDup(db, p, flags, 0) : 0;
}
SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){
  ExprList *pNew;
  struct ExprList_item *pItem, *pOldItem;
  int i;
  Expr *pPriorSelectColOld = 0;
  Expr *pPriorSelectColNew = 0;
  assert( db!=0 );
  if( p==0 ) return 0;
  pNew = sqlite3DbMallocRawNN(db, sqlite3DbMallocSize(db, p));
  if( pNew==0 ) return 0;
  pNew->nExpr = p->nExpr;
  pNew->nAlloc = p->nAlloc;
  pItem = pNew->a;
  pOldItem = p->a;
  for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){
    Expr *pOldExpr = pOldItem->pExpr;
    Expr *pNewExpr;
    pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags);
    if( pOldExpr
     && pOldExpr->op==TK_SELECT_COLUMN
     && (pNewExpr = pItem->pExpr)!=0
    ){

      if( pNewExpr->pRight ){
        pPriorSelectColOld = pOldExpr->pRight;
        pPriorSelectColNew = pNewExpr->pRight;
        pNewExpr->pLeft = pNewExpr->pRight;
      }else{

        if( pOldExpr->pLeft!=pPriorSelectColOld ){
          pPriorSelectColOld = pOldExpr->pLeft;
          pPriorSelectColNew = sqlite3ExprDup(db, pPriorSelectColOld, flags);
          pNewExpr->pRight = pPriorSelectColNew;
        }
        pNewExpr->pLeft = pPriorSelectColNew;
      }
    }
    pItem->zEName = sqlite3DbStrDup(db, pOldItem->zEName);
    pItem->sortFlags = pOldItem->sortFlags;
    pItem->eEName = pOldItem->eEName;
    pItem->done = 0;
    pItem->bNulls = pOldItem->bNulls;

  if( pExpr->op!=TK_SELECT && pColumns->nId!=(n=sqlite3ExprVectorSize(pExpr)) ){
    sqlite3ErrorMsg(pParse, "%d columns assigned %d values",
                    pColumns->nId, n);
    goto vector_append_error;
  }

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

    if( pSubExpr==0 ) continue;

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

      break;
    }
    case TK_SELECT_COLUMN: {
      int n;
      if( pExpr->pLeft->iTable==0 ){
        pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft);
      }
      assert( pExpr->pLeft->op==TK_SELECT || pExpr->pLeft->op==TK_ERROR );
      n = sqlite3ExprVectorSize(pExpr->pLeft);
      if( pExpr->iTable!=n ){


        sqlite3ErrorMsg(pParse, "%d columns assigned %d values",
                                pExpr->iTable, n);
      }
      return pExpr->pLeft->iTable + pExpr->iColumn;
    }
    case TK_IN: {
      int destIfFalse = sqlite3VdbeMakeLabel(pParse);

      zDb, pNew->addColOffset, zCol, pNew->addColOffset,
      zTab
    );
    sqlite3DbFree(db, zCol);
    db->mDbFlags = savedDbFlags;
  }

  v = sqlite3GetVdbe(pParse);
  if( v ){
    /* Make sure the schema version is at least 3.  But do not upgrade
    ** from less than 3 to 4, as that will corrupt any preexisting DESC
    ** index.
    */


    r1 = sqlite3GetTempReg(pParse);
    sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT);
    sqlite3VdbeUsesBtree(v, iDb);
    sqlite3VdbeAddOp2(v, OP_AddImm, r1, -2);
    sqlite3VdbeAddOp2(v, OP_IfPos, r1, sqlite3VdbeCurrentAddr(v)+2);
    VdbeCoverage(v);
    sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, 3);
    sqlite3ReleaseTempReg(pParse, r1);


    /* Reload the table definition */
    renameReloadSchema(pParse, iDb, INITFLAG_AlterRename);

    /* Verify that constraints are still satisfied */
    if( pNew->pCheck!=0
     || (pCol->notNull && (pCol->colFlags & COLFLAG_GENERATED)!=0)
    ){
      sqlite3NestedParse(pParse,
        "SELECT CASE WHEN quick_check GLOB 'CHECK*'"
        " THEN raise(ABORT,'CHECK constraint failed')"
        " ELSE raise(ABORT,'NOT NULL constraint failed')"
        " END"
        "  FROM pragma_quick_check(\"%w\",\"%w\")"
        " WHERE quick_check GLOB 'CHECK*' OR quick_check GLOB 'NULL*'",
        zTab, zDb
      );
    }
  }
}

/*
** This function is called by the parser after the table-name in
** an "ALTER TABLE <table-name> ADD" statement is parsed. Argument
** pSrc is the full-name of the table being altered.
**

    ** can be an eponymous virtual table. */
    if( pParse->disableVtab==0 && db->init.busy==0 ){
      Module *pMod = (Module*)sqlite3HashFind(&db->aModule, zName);
      if( pMod==0 && sqlite3_strnicmp(zName, "pragma_", 7)==0 ){
        pMod = sqlite3PragmaVtabRegister(db, zName);
      }
      if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){
        testcase( pMod->pEpoTab==0 );
        return pMod->pEpoTab;
      }
    }
#endif
    if( flags & LOCATE_NOERR ) return 0;
    pParse->checkSchema = 1;
  }else if( IsVirtual(p) && pParse->disableVtab ){

** context.
*/
SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db){
#ifndef SQLITE_OMIT_VIRTUALTABLE
  if( (db->flags & SQLITE_Defensive)!=0
   && db->pVtabCtx==0
   && db->nVdbeExec==0
   && !sqlite3VtabInSync(db)
  ){
    return 1;
  }
#endif
  return 0;
}

  sqlite3_result_int64(context, sqlite3_last_insert_rowid(db));
}

/*
** Implementation of the changes() SQL function.
**
** IMP: R-62073-11209 The changes() SQL function is a wrapper
** around the sqlite3_changes64() C/C++ function and hence follows the same
** rules for counting changes.
*/
static void changes(
  sqlite3_context *context,
  int NotUsed,
  sqlite3_value **NotUsed2
){
  sqlite3 *db = sqlite3_context_db_handle(context);
  UNUSED_PARAMETER2(NotUsed, NotUsed2);
  sqlite3_result_int64(context, sqlite3_changes64(db));
}

/*
** Implementation of the total_changes() SQL function.  The return value is
** the same as the sqlite3_total_changes64() API function.
*/
static void total_changes(
  sqlite3_context *context,
  int NotUsed,
  sqlite3_value **NotUsed2
){
  sqlite3 *db = sqlite3_context_db_handle(context);
  UNUSED_PARAMETER2(NotUsed, NotUsed2);
  /* IMP: R-52756-41993 This function was a wrapper around the
  ** sqlite3_total_changes() C/C++ interface. */
  sqlite3_result_int64(context, sqlite3_total_changes64(db));
}

/*
** A structure defining how to do GLOB-style comparisons.
*/
struct compareInfo {
  u8 matchAll;          /* "*" or "%" */

    FUNCTION(rtrim,              1, 2, 0, trimFunc         ),
    FUNCTION(rtrim,              2, 2, 0, trimFunc         ),
    FUNCTION(trim,               1, 3, 0, trimFunc         ),
    FUNCTION(trim,               2, 3, 0, trimFunc         ),
    FUNCTION(min,               -1, 0, 1, minmaxFunc       ),
    FUNCTION(min,                0, 0, 1, 0                ),
    WAGGREGATE(min, 1, 0, 1, minmaxStep, minMaxFinalize, minMaxValue, 0,
                                 SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ),
    FUNCTION(max,               -1, 1, 1, minmaxFunc       ),
    FUNCTION(max,                0, 1, 1, 0                ),
    WAGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize, minMaxValue, 0,
                                 SQLITE_FUNC_MINMAX|SQLITE_FUNC_ANYORDER ),
    FUNCTION2(typeof,            1, 0, 0, typeofFunc,  SQLITE_FUNC_TYPEOF),
    FUNCTION2(length,            1, 0, 0, lengthFunc,  SQLITE_FUNC_LENGTH),
    FUNCTION(instr,              2, 0, 0, instrFunc        ),
    FUNCTION(printf,            -1, 0, 0, printfFunc       ),
    FUNCTION(unicode,            1, 0, 0, unicodeFunc      ),
    FUNCTION(char,              -1, 0, 0, charFunc         ),
    FUNCTION(abs,                1, 0, 0, absFunc          ),

    FUNCTION(substr,             3, 0, 0, substrFunc       ),
    FUNCTION(substring,          2, 0, 0, substrFunc       ),
    FUNCTION(substring,          3, 0, 0, substrFunc       ),
    WAGGREGATE(sum,   1,0,0, sumStep, sumFinalize, sumFinalize, sumInverse, 0),
    WAGGREGATE(total, 1,0,0, sumStep,totalFinalize,totalFinalize,sumInverse, 0),
    WAGGREGATE(avg,   1,0,0, sumStep, avgFinalize, avgFinalize, sumInverse, 0),
    WAGGREGATE(count, 0,0,0, countStep,
        countFinalize, countFinalize, countInverse,
        SQLITE_FUNC_COUNT|SQLITE_FUNC_ANYORDER  ),
    WAGGREGATE(count, 1,0,0, countStep,
        countFinalize, countFinalize, countInverse, SQLITE_FUNC_ANYORDER ),
    WAGGREGATE(group_concat, 1, 0, 0, groupConcatStep,
        groupConcatFinalize, groupConcatValue, groupConcatInverse, 0),
    WAGGREGATE(group_concat, 2, 0, 0, groupConcatStep,
        groupConcatFinalize, groupConcatValue, groupConcatInverse, 0),

    LIKEFUNC(glob, 2, &globInfo, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE),
#ifdef SQLITE_CASE_SENSITIVE_LIKE

  return pIdx->zColAff;
}

/*
** Compute the affinity string for table pTab, if it has not already been
** computed.  As an optimization, omit trailing SQLITE_AFF_BLOB affinities.
**
** If the affinity exists (if it is not entirely SQLITE_AFF_BLOB values) and
** if iReg>0 then code an OP_Affinity opcode that will set the affinities
** for register iReg and following.  Or if affinities exists and iReg==0,
** then just set the P4 operand of the previous opcode (which should  be
** an OP_MakeRecord) to the affinity string.
**
** A column affinity string has one character per column:
**

  /* Version 3.32.0 and later */
  char *(*create_filename)(const char*,const char*,const char*,
                           int,const char**);
  void (*free_filename)(char*);
  sqlite3_file *(*database_file_object)(const char*);
  /* Version 3.34.0 and later */
  int (*txn_state)(sqlite3*,const char*);
  /* Version 3.36.1 and later */
  sqlite3_int64 (*changes64)(sqlite3*);
  sqlite3_int64 (*total_changes64)(sqlite3*);
};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(

  sqlite3_filename_wal,
  /* Version 3.32.0 and later */
  sqlite3_create_filename,
  sqlite3_free_filename,
  sqlite3_database_file_object,
  /* Version 3.34.0 and later */
  sqlite3_txn_state,
  /* Version 3.36.1 and later */
  sqlite3_changes64,
  sqlite3_total_changes64,
};

/* True if x is the directory separator character
*/
#if SQLITE_OS_WIN
# define DirSep(X)  ((X)=='/'||(X)=='\\')
#else

  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt,
  /* ColNames:  */ 15, 6,
  /* iArg:      */ 1 },
#endif
#if !defined(SQLITE_OMIT_INTEGRITY_CHECK)
 {/* zName:     */ "integrity_check",
  /* ePragTyp:  */ PragTyp_INTEGRITY_CHECK,
  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
 {/* zName:     */ "journal_mode",
  /* ePragTyp:  */ PragTyp_JOURNAL_MODE,
  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq,

  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ SQLITE_QueryOnly },
#endif
#if !defined(SQLITE_OMIT_INTEGRITY_CHECK)
 {/* zName:     */ "quick_check",
  /* ePragTyp:  */ PragTyp_INTEGRITY_CHECK,
  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
 {/* zName:     */ "read_uncommitted",
  /* ePragTyp:  */ PragTyp_FLAG,
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,

        }
        addrOk = sqlite3VdbeMakeLabel(pParse);

        /* Generate code to read the child key values into registers
        ** regRow..regRow+n. If any of the child key values are NULL, this
        ** row cannot cause an FK violation. Jump directly to addrOk in
        ** this case. */
        if( regRow+pFK->nCol>pParse->nMem ) pParse->nMem = regRow+pFK->nCol;
        for(j=0; j<pFK->nCol; j++){
          int iCol = aiCols ? aiCols[j] : pFK->aCol[j].iFrom;
          sqlite3ExprCodeGetColumnOfTable(v, pTab, 0, iCol, regRow+j);
          sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v);
        }

        /* Generate code to query the parent index for a matching parent

#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
/*
** Assign new cursor numbers to each of the items in pSrc. For each
** new cursor number assigned, set an entry in the aCsrMap[] array
** to map the old cursor number to the new:
**
**     aCsrMap[iOld+1] = iNew;
**
** The array is guaranteed by the caller to be large enough for all
** existing cursor numbers in pSrc.  aCsrMap[0] is the array size.
**
** If pSrc contains any sub-selects, call this routine recursively
** on the FROM clause of each such sub-select, with iExcept set to -1.
*/
static void srclistRenumberCursors(
  Parse *pParse,                  /* Parse context */
  int *aCsrMap,                   /* Array to store cursor mappings in */
  SrcList *pSrc,                  /* FROM clause to renumber */
  int iExcept                     /* FROM clause item to skip */
){
  int i;
  SrcItem *pItem;
  for(i=0, pItem=pSrc->a; i<pSrc->nSrc; i++, pItem++){
    if( i!=iExcept ){
      Select *p;
      assert( pItem->iCursor < aCsrMap[0] );
      if( !pItem->fg.isRecursive || aCsrMap[pItem->iCursor+1]==0 ){
        aCsrMap[pItem->iCursor+1] = pParse->nTab++;
      }
      pItem->iCursor = aCsrMap[pItem->iCursor+1];
      for(p=pItem->pSelect; p; p=p->pPrior){
        srclistRenumberCursors(pParse, aCsrMap, p->pSrc, -1);
      }
    }
  }
}

/*
** *piCursor is a cursor number.  Change it if it needs to be mapped.
*/
static void renumberCursorDoMapping(Walker *pWalker, int *piCursor){
  int *aCsrMap = pWalker->u.aiCol;
  int iCsr = *piCursor;
  if( iCsr < aCsrMap[0] && aCsrMap[iCsr+1]>0 ){
    *piCursor = aCsrMap[iCsr+1];
  }
}

/*
** Expression walker callback used by renumberCursors() to update
** Expr objects to match newly assigned cursor numbers.
*/
static int renumberCursorsCb(Walker *pWalker, Expr *pExpr){

  int op = pExpr->op;
  if( op==TK_COLUMN || op==TK_IF_NULL_ROW ){
    renumberCursorDoMapping(pWalker, &pExpr->iTable);
  }
  if( ExprHasProperty(pExpr, EP_FromJoin) ){
    renumberCursorDoMapping(pWalker, &pExpr->iRightJoinTable);
  }
  return WRC_Continue;
}

/*
** Assign a new cursor number to each cursor in the FROM clause (Select.pSrc)
** of the SELECT statement passed as the second argument, and to each

    }

    /* Restriction (23) */
    if( (p->selFlags & SF_Recursive) ) return 0;

    if( pSrc->nSrc>1 ){
      if( pParse->nSelect>500 ) return 0;
      aCsrMap = sqlite3DbMallocZero(db, (pParse->nTab+1)*sizeof(int));
      if( aCsrMap ) aCsrMap[0] = pParse->nTab;
    }
  }

  /***** If we reach this point, flattening is permitted. *****/
  SELECTTRACE(1,pParse,p,("flatten %u.%p from term %d\n",
                   pSub->selId, pSub, iFrom));

** sub-expression matches the criteria for being moved to the WHERE
** clause. If so, add it to the WHERE clause and replace the sub-expression
** within the HAVING expression with a constant "1".
*/
static int havingToWhereExprCb(Walker *pWalker, Expr *pExpr){
  if( pExpr->op!=TK_AND ){
    Select *pS = pWalker->u.pSelect;
    /* This routine is called before the HAVING clause of the current
    ** SELECT is analyzed for aggregates. So if pExpr->pAggInfo is set
    ** here, it indicates that the expression is a correlated reference to a
    ** column from an outer aggregate query, or an aggregate function that
    ** belongs to an outer query. Do not move the expression to the WHERE
    ** clause in this obscure case, as doing so may corrupt the outer Select
    ** statements AggInfo structure.  */
    if( sqlite3ExprIsConstantOrGroupBy(pWalker->pParse, pExpr, pS->pGroupBy)
     && ExprAlwaysFalse(pExpr)==0
     && pExpr->pAggInfo==0
    ){
      sqlite3 *db = pWalker->pParse->db;
      Expr *pNew = sqlite3Expr(db, TK_INTEGER, "1");
      if( pNew ){
        Expr *pWhere = pS->pWhere;
        SWAP(Expr, *pNew, *pExpr);
        pNew = sqlite3ExprAnd(pWalker->pParse, pWhere, pNew);

#if SELECTTRACE_ENABLED
  if( sqlite3SelectTrace & 0x104 ){
    SELECTTRACE(0x104,pParse,p, ("after name resolution:\n"));
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif

  /* If the SF_UFSrcCheck flag is set, then this function is being called
  ** as part of populating the temp table for an UPDATE...FROM statement.
  ** In this case, it is an error if the target object (pSrc->a[0]) name
  ** or alias is duplicated within FROM clause (pSrc->a[1..n]).
  **
  ** Postgres disallows this case too. The reason is that some other
  ** systems handle this case differently, and not all the same way,
  ** which is just confusing. To avoid this, we follow PG's lead and
  ** disallow it altogether.  */
  if( p->selFlags & SF_UFSrcCheck ){
    SrcItem *p0 = &p->pSrc->a[0];
    for(i=1; i<p->pSrc->nSrc; i++){
      SrcItem *p1 = &p->pSrc->a[i];
      if( p0->pTab==p1->pTab && 0==sqlite3_stricmp(p0->zAlias, p1->zAlias) ){
        sqlite3ErrorMsg(pParse,
            "target object/alias may not appear in FROM clause: %s",
            p0->zAlias ? p0->zAlias : p0->pTab->zName
        );
        goto select_end;
      }
    }

    /* Clear the SF_UFSrcCheck flag. The check has already been performed,
    ** and leaving this flag set can cause errors if a compound sub-query
    ** in p->pSrc is flattened into this query and this function called
    ** again as part of compound SELECT processing.  */
    p->selFlags &= ~SF_UFSrcCheck;
  }

  if( pDest->eDest==SRT_Output ){
    sqlite3GenerateColumnNames(pParse, p);
  }

#ifndef SQLITE_OMIT_WINDOWFUNC

    ** Flattening an aggregate subquery is only possible if the outer query
    ** is not a join.  But if the outer query is not a join, then the subquery
    ** will be implemented as a co-routine and there is no advantage to
    ** flattening in that case.
    */
    if( (pSub->selFlags & SF_Aggregate)!=0 ) continue;
    assert( pSub->pGroupBy==0 );

    /* If a FROM-clause subquery has an ORDER BY clause that is not
    ** really doing anything, then delete it now so that it does not
    ** interfere with query flattening.  See the discussion at
    ** https://sqlite.org/forum/forumpost/2d76f2bcf65d256a
    **
    ** Beware of these cases where the ORDER BY clause may not be safely
    ** omitted:
    **
    **    (1)   There is also a LIMIT clause
    **    (2)   The subquery was added to help with window-function
    **          processing
    **    (3)   The subquery is in the FROM clause of an UPDATE
    **    (4)   The outer query uses an aggregate function other than
    **          the built-in count(), min(), or max().
    **    (5)   The ORDER BY isn't going to accomplish anything because
    **          one of:
    **            (a)  The outer query has a different ORDER BY clause
    **            (b)  The subquery is part of a join
    **          See forum post 062d576715d277c8
    */
    if( pSub->pOrderBy!=0
     && (p->pOrderBy!=0 || pTabList->nSrc>1)      /* Condition (5) */
     && pSub->pLimit==0                           /* Condition (1) */
     && (pSub->selFlags & SF_OrderByReqd)==0      /* Condition (2) */
     && (p->selFlags & SF_OrderByReqd)==0         /* Condition (3) and (4) */
     && OptimizationEnabled(db, SQLITE_OmitOrderBy)
    ){
      SELECTTRACE(0x100,pParse,p,
                ("omit superfluous ORDER BY on %r FROM-clause subquery\n",i+1));
      sqlite3ExprListDelete(db, pSub->pOrderBy);
      pSub->pOrderBy = 0;
    }

    /* If the outer query contains a "complex" result set (that is,
    ** if the result set of the outer query uses functions or subqueries)
    ** and if the subquery contains an ORDER BY clause and if
    ** it will be implemented as a co-routine, then do not flatten.  This
    ** restriction allows SQL constructs like this:
    **

  assert( pTrigger == &(pReturning->retTrig) );
  memset(&sSelect, 0, sizeof(sSelect));
  memset(&sFrom, 0, sizeof(sFrom));
  sSelect.pEList = sqlite3ExprListDup(db, pReturning->pReturnEL, 0);
  sSelect.pSrc = &sFrom;
  sFrom.nSrc = 1;
  sFrom.a[0].pTab = pTab;
  sFrom.a[0].iCursor = -1;
  sqlite3SelectPrep(pParse, &sSelect, 0);
  if( db->mallocFailed==0 && pParse->nErr==0 ){
    sqlite3GenerateColumnNames(pParse, &sSelect);
  }
  sqlite3ExprListDelete(db, sSelect.pEList);
  pNew = sqlite3ExpandReturning(pParse, pReturning->pReturnEL, pTab);
  if( pNew ){

    for(i=0; i<pChanges->nExpr; i++){
      pList = sqlite3ExprListAppend(pParse, pList,
          sqlite3ExprDup(db, pChanges->a[i].pExpr, 0)
      );
    }
  }
  pSelect = sqlite3SelectNew(pParse, pList,
      pSrc, pWhere2, pGrp, 0, pOrderBy2, SF_UFSrcCheck|SF_IncludeHidden, pLimit2
  );
  if( pSelect ) pSelect->selFlags |= SF_OrderByReqd;
  sqlite3SelectDestInit(&dest, eDest, iEph);
  dest.iSDParm2 = (pPk ? pPk->nKeyCol : -1);
  sqlite3Select(pParse, pSelect, &dest);
  sqlite3SelectDelete(db, pSelect);
}

/*

  sqlite3_value *pOut     /* Write results here, if not NULL. VACUUM INTO */
){
  int rc = SQLITE_OK;     /* Return code from service routines */
  Btree *pMain;           /* The database being vacuumed */
  Btree *pTemp;           /* The temporary database we vacuum into */
  u32 saved_mDbFlags;     /* Saved value of db->mDbFlags */
  u64 saved_flags;        /* Saved value of db->flags */
  i64 saved_nChange;      /* Saved value of db->nChange */
  i64 saved_nTotalChange; /* Saved value of db->nTotalChange */
  u32 saved_openFlags;    /* Saved value of db->openFlags */
  u8 saved_mTrace;        /* Saved trace settings */
  Db *pDb = 0;            /* Database to detach at end of vacuum */
  int isMemDb;            /* True if vacuuming a :memory: database */
  int nRes;               /* Bytes of reserved space at the end of each page */
  int nDb;                /* Number of attached databases */
  const char *zDbMain;    /* Schema name of database to vacuum */

    sqlite3OomFault(pToplevel->db);
  }
}

/*
** Check to see if virtual table module pMod can be have an eponymous
** virtual table instance.  If it can, create one if one does not already
** exist. Return non-zero if either the eponymous virtual table instance
** exists when this routine returns or if an attempt to create it failed
** and an error message was left in pParse.
**
** An eponymous virtual table instance is one that is named after its
** module, and more importantly, does not require a CREATE VIRTUAL TABLE
** statement in order to come into existance.  Eponymous virtual table
** instances always exist.  They cannot be DROP-ed.
**
** Any virtual table module for which xConnect and xCreate are the same

  addModuleArgument(pParse, pTab, 0);
  addModuleArgument(pParse, pTab, sqlite3DbStrDup(db, pTab->zName));
  rc = vtabCallConstructor(db, pTab, pMod, pModule->xConnect, &zErr);
  if( rc ){
    sqlite3ErrorMsg(pParse, "%s", zErr);
    sqlite3DbFree(db, zErr);
    sqlite3VtabEponymousTableClear(db, pMod);

  }
  return 1;
}

/*
** Erase the eponymous virtual table instance associated with
** virtual table module pMod, if it exists.

     || (pExpr->pRight->flags & EP_xIsSelect)==0)
   && pWC->op==TK_AND
  ){
    int i;
    for(i=0; i<nLeft; i++){
      int idxNew;
      Expr *pNew;
      Expr *pLeft = sqlite3ExprForVectorField(pParse, pExpr->pLeft, i, nLeft);
      Expr *pRight = sqlite3ExprForVectorField(pParse, pExpr->pRight, i, nLeft);

      pNew = sqlite3PExpr(pParse, pExpr->op, pLeft, pRight);
      transferJoinMarkings(pNew, pExpr);
      idxNew = whereClauseInsert(pWC, pNew, TERM_DYNAMIC);
      exprAnalyze(pSrc, pWC, idxNew);
    }
    pTerm = &pWC->a[idxTerm];

      if( (ws & WHERE_IDX_ONLY)==0 ){
        assert( pLevel->iTabCur==pTabList->a[pLevel->iFrom].iCursor );
        sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iTabCur);
      }
      if( (ws & WHERE_INDEXED)
       || ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx)
      ){
        if( ws & WHERE_MULTI_OR ){
          Index *pIx = pLevel->u.pCovidx;
          int iDb = sqlite3SchemaToIndex(db, pIx->pSchema);
          sqlite3VdbeAddOp3(v, OP_ReopenIdx, pLevel->iIdxCur, pIx->tnum, iDb);
          sqlite3VdbeSetP4KeyInfo(pParse, pIx);
        }
        sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur);
      }
      if( pLevel->op==OP_Return ){
        sqlite3VdbeAddOp2(v, OP_Gosub, pLevel->p1, pLevel->addrFirst);
      }else{
        sqlite3VdbeGoto(v, pLevel->addrFirst);
      }

      if( db->mallocFailed ){
        sqlite3ExprDelete(db, pDup);
        break;
      }
      if( bIntToNull ){
        int iDummy;
        Expr *pSub;

        pSub = sqlite3ExprSkipCollateAndLikely(pDup);

        if( sqlite3ExprIsInteger(pSub, &iDummy) ){
          pSub->op = TK_NULL;
          pSub->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse);
          pSub->u.zToken = 0;
        }
      }
      pList = sqlite3ExprListAppend(pParse, pList, pDup);

       ("New window-function subquery in FROM clause of (%u/%p)\n",
       p->selId, p));
    p->pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0);
    if( p->pSrc ){
      Table *pTab2;
      p->pSrc->a[0].pSelect = pSub;
      sqlite3SrcListAssignCursors(pParse, p->pSrc);
      pSub->selFlags |= SF_Expanded|SF_OrderByReqd;
      pTab2 = sqlite3ResultSetOfSelect(pParse, pSub, SQLITE_AFF_NONE);
      pSub->selFlags |= (selFlags & SF_Aggregate);
      if( pTab2==0 ){
        /* Might actually be some other kind of error, but in that case
        ** pParse->nErr will be set, so if SQLITE_NOMEM is set, we will get
        ** the correct error message regardless. */
        rc = SQLITE_NOMEM;

      **      expr1 NOT IN ()
      **
      ** simplify to constants 0 (false) and 1 (true), respectively,
      ** regardless of the value of expr1.
      */
      sqlite3ExprUnmapAndDelete(pParse, yymsp[-4].minor.yy404);
      yymsp[-4].minor.yy404 = sqlite3Expr(pParse->db, TK_INTEGER, yymsp[-3].minor.yy376 ? "1" : "0");
    }else{
      Expr *pRHS = yymsp[-1].minor.yy70->a[0].pExpr;
      if( yymsp[-1].minor.yy70->nExpr==1 && sqlite3ExprIsConstant(pRHS) && yymsp[-4].minor.yy404->op!=TK_VECTOR ){
        yymsp[-1].minor.yy70->a[0].pExpr = 0;
        sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy70);
        pRHS = sqlite3PExpr(pParse, TK_UPLUS, pRHS, 0);
        yymsp[-4].minor.yy404 = sqlite3PExpr(pParse, TK_EQ, yymsp[-4].minor.yy404, pRHS);

      }else{
        yymsp[-4].minor.yy404 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy404, 0);
        if( yymsp[-4].minor.yy404==0 ){
          sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy70);
        }else if( yymsp[-4].minor.yy404->pLeft->op==TK_VECTOR ){
          int nExpr = yymsp[-4].minor.yy404->pLeft->x.pList->nExpr;
          Select *pSelectRHS = sqlite3ExprListToValues(pParse, nExpr, yymsp[-1].minor.yy70);
          if( pSelectRHS ){
            parserDoubleLinkSelect(pParse, pSelectRHS);
            sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy404, pSelectRHS);
          }
        }else{
          yymsp[-4].minor.yy404->x.pList = yymsp[-1].minor.yy70;
          sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy404);
        }
      }
      if( yymsp[-3].minor.yy376 ) yymsp[-4].minor.yy404 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy404, 0);
    }
  }
        break;
      case 216: /* expr ::= LP select RP */
{

  db->lastRowid = iRowid;
  sqlite3_mutex_leave(db->mutex);
}

/*
** Return the number of changes in the most recent call to sqlite3_exec().
*/
SQLITE_API sqlite3_int64 sqlite3_changes64(sqlite3 *db){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(db) ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
  return db->nChange;
}
SQLITE_API int sqlite3_changes(sqlite3 *db){
  return (int)sqlite3_changes64(db);
}

/*
** Return the number of changes since the database handle was opened.
*/
SQLITE_API sqlite3_int64 sqlite3_total_changes64(sqlite3 *db){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(db) ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
  return db->nTotalChange;
}
SQLITE_API int sqlite3_total_changes(sqlite3 *db){
  return (int)sqlite3_total_changes64(db);
}

/*
** Close all open savepoints. This function only manipulates fields of the
** database handle object, it does not close any savepoints that may be open
** at the b-tree/pager level.
*/

  /* If SQLITE_UTF16 is specified as the encoding type, transform this
  ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the
  ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally.
  **
  ** If SQLITE_ANY is specified, add three versions of the function
  ** to the hash table.
  */
  switch( enc ){
    case SQLITE_UTF16:
      enc = SQLITE_UTF16NATIVE;
      break;
    case SQLITE_ANY: {
      int rc;
      rc = sqlite3CreateFunc(db, zFunctionName, nArg,
           (SQLITE_UTF8|extraFlags)^SQLITE_FUNC_UNSAFE,
           pUserData, xSFunc, xStep, xFinal, xValue, xInverse, pDestructor);
      if( rc==SQLITE_OK ){
        rc = sqlite3CreateFunc(db, zFunctionName, nArg,
             (SQLITE_UTF16LE|extraFlags)^SQLITE_FUNC_UNSAFE,
             pUserData, xSFunc, xStep, xFinal, xValue, xInverse, pDestructor);
      }
      if( rc!=SQLITE_OK ){
        return rc;
      }
      enc = SQLITE_UTF16BE;
      break;
    }
    case SQLITE_UTF8:
    case SQLITE_UTF16LE:
    case SQLITE_UTF16BE:
      break;
    default:
      enc = SQLITE_UTF8;
      break;
  }
#else
  enc = SQLITE_UTF8;
#endif

  /* Check if an existing function is being overridden or deleted. If so,
  ** and there are active VMs, then return SQLITE_BUSY. If a function

    pArg->xDestroy = xDestroy;
    pArg->pUserData = p;
  }
  rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p,
      xSFunc, xStep, xFinal, xValue, xInverse, pArg
  );
  if( pArg && pArg->nRef==0 ){
    assert( rc!=SQLITE_OK || (xStep==0 && xFinal==0) );
    xDestroy(p);
    sqlite3_free(pArg);
  }

 out:
  rc = sqlite3ApiExit(db, rc);
  sqlite3_mutex_leave(db->mutex);

  ** dealt with in the previous code block.  Besides these, the only
  ** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY,
  ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE,
  ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits.  Silently mask
  ** off all other flags.
  */
  flags &=  ~( SQLITE_OPEN_DELETEONCLOSE |

               SQLITE_OPEN_MAIN_DB |
               SQLITE_OPEN_TEMP_DB |
               SQLITE_OPEN_TRANSIENT_DB |
               SQLITE_OPEN_MAIN_JOURNAL |
               SQLITE_OPEN_TEMP_JOURNAL |
               SQLITE_OPEN_SUBJOURNAL |
               SQLITE_OPEN_SUPER_JOURNAL |

static void sqlite3Fts5IndexCloseReader(Fts5Index*);

/*
** This interface is used by the fts5vocab module.
*/
static const char *sqlite3Fts5IterTerm(Fts5IndexIter*, int*);
static int sqlite3Fts5IterNextScan(Fts5IndexIter*);
static void *sqlite3Fts5StructureRef(Fts5Index*);
static void sqlite3Fts5StructureRelease(void*);
static int sqlite3Fts5StructureTest(Fts5Index*, void*);


/*
** Insert or remove data to or from the index. Each time a document is
** added to or removed from the index, this function is called one or more
** times.
**

  int i = *pi;
  if( i>=n ){
    /* EOF */
    *piOff = -1;
    return 1;
  }else{
    i64 iOff = *piOff;
    u32 iVal;
    fts5FastGetVarint32(a, i, iVal);
    assert( iVal>=0 );
    if( iVal<=1 ){
      if( iVal==0 ){
        *pi = i;
        return 0;
      }
      fts5FastGetVarint32(a, i, iVal);
      iOff = ((i64)iVal) << 32;
      assert( iOff>=0 );
      fts5FastGetVarint32(a, i, iVal);
      if( iVal<2 ){
        /* This is a corrupt record. So stop parsing it here. */
        *piOff = -1;
        return 1;
      }
      *piOff = iOff + ((iVal-2) & 0x7FFFFFFF);
    }else{
      *piOff = (iOff & (i64)0x7FFFFFFF<<32)+((iOff + (iVal-2)) & 0x7FFFFFFF);
    }
    *pi = i;
    assert_nc( *piOff>=iOff );
    return 0;
  }
}


/*
** Advance the iterator object passed as the only argument. Return true

  int bPhraseToAnd;               /* Convert "a+b" to "a AND b" */
};

static void sqlite3Fts5ParseError(Fts5Parse *pParse, const char *zFmt, ...){
  va_list ap;
  va_start(ap, zFmt);
  if( pParse->rc==SQLITE_OK ){
    assert( pParse->zErr==0 );
    pParse->zErr = sqlite3_vmprintf(zFmt, ap);
    pParse->rc = SQLITE_ERROR;
  }
  va_end(ap);
}

static int fts5ExprIsspace(char t){

static void sqlite3Fts5ParseSetColset(
  Fts5Parse *pParse,
  Fts5ExprNode *pExpr,
  Fts5Colset *pColset
){
  Fts5Colset *pFree = pColset;
  if( pParse->pConfig->eDetail==FTS5_DETAIL_NONE ){

    sqlite3Fts5ParseError(pParse,
        "fts5: column queries are not supported (detail=none)"
    );
  }else{
    fts5ParseSetColset(pParse, pExpr, pColset, &pFree);
  }
  sqlite3_free(pFree);
}

          if( pParse->pConfig->eDetail!=FTS5_DETAIL_FULL ){
            Fts5ExprPhrase *pPhrase = pNear->apPhrase[0];
            if( pNear->nPhrase!=1
                || pPhrase->nTerm>1
                || (pPhrase->nTerm>0 && pPhrase->aTerm[0].bFirst)
              ){



              sqlite3Fts5ParseError(pParse,
                  "fts5: %s queries are not supported (detail!=full)",
                  pNear->nPhrase==1 ? "phrase": "NEAR"
              );
              sqlite3_free(pRet);
              pRet = 0;
            }
          }
        }else{
          fts5ExprAddChildren(pRet, pLeft);
          fts5ExprAddChildren(pRet, pRight);

    sqlite3_free(pStruct);
  }
}

static void fts5StructureRef(Fts5Structure *pStruct){
  pStruct->nRef++;
}

static void *sqlite3Fts5StructureRef(Fts5Index *p){
  fts5StructureRef(p->pStruct);
  return (void*)p->pStruct;
}
static void sqlite3Fts5StructureRelease(void *p){
  if( p ){
    fts5StructureRelease((Fts5Structure*)p);
  }
}
static int sqlite3Fts5StructureTest(Fts5Index *p, void *pStruct){
  if( p->pStruct!=(Fts5Structure*)pStruct ){
    return SQLITE_ABORT;
  }
  return SQLITE_OK;
}

/*
** Deserialize and return the structure record currently stored in serialized
** form within buffer pData/nData.
**
** The Fts5Structure.aLevel[] and each Fts5StructureLevel.aSeg[] array
** are over-allocated by one slot. This allows the structure contents

static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "fts5: 2021-07-20 14:57:49 1e35cc6d5c2f563c6bb163bb150d7bc6ede4c993efa828af1face3261bf65a2c", -1, SQLITE_TRANSIENT);
}

/*
** Return true if zName is the extension on one of the shadow tables used
** by this module.
*/
static int fts5ShadowName(const char *zName){

struct Fts5VocabCursor {
  sqlite3_vtab_cursor base;
  sqlite3_stmt *pStmt;            /* Statement holding lock on pIndex */
  Fts5Table *pFts5;               /* Associated FTS5 table */

  int bEof;                       /* True if this cursor is at EOF */
  Fts5IndexIter *pIter;           /* Term/rowid iterator object */
  void *pStruct;                  /* From sqlite3Fts5StructureRef() */

  int nLeTerm;                    /* Size of zLeTerm in bytes */
  char *zLeTerm;                  /* (term <= $zLeTerm) paramater, or NULL */

  /* These are used by 'col' tables only */
  int iCol;
  i64 *aCnt;

  *ppCsr = (sqlite3_vtab_cursor*)pCsr;
  return rc;
}

static void fts5VocabResetCursor(Fts5VocabCursor *pCsr){
  pCsr->rowid = 0;
  sqlite3Fts5IterClose(pCsr->pIter);
  sqlite3Fts5StructureRelease(pCsr->pStruct);
  pCsr->pStruct = 0;
  pCsr->pIter = 0;
  sqlite3_free(pCsr->zLeTerm);
  pCsr->nLeTerm = -1;
  pCsr->zLeTerm = 0;
  pCsr->bEof = 0;
}

/*
** Advance the cursor to the next row in the table.
*/
static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){
  Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor;
  Fts5VocabTable *pTab = (Fts5VocabTable*)pCursor->pVtab;

  int nCol = pCsr->pFts5->pConfig->nCol;
  int rc;

  rc = sqlite3Fts5StructureTest(pCsr->pFts5->pIndex, pCsr->pStruct);
  if( rc!=SQLITE_OK ) return rc;
  pCsr->rowid++;

  if( pTab->eType==FTS5_VOCAB_INSTANCE ){
    return fts5VocabInstanceNext(pCsr);
  }

  if( pTab->eType==FTS5_VOCAB_COL ){

      }
    }
  }

  if( rc==SQLITE_OK ){
    Fts5Index *pIndex = pCsr->pFts5->pIndex;
    rc = sqlite3Fts5IndexQuery(pIndex, zTerm, nTerm, f, 0, &pCsr->pIter);
    if( rc==SQLITE_OK ){
      pCsr->pStruct = sqlite3Fts5StructureRef(pIndex);
    }
  }
  if( rc==SQLITE_OK && eType==FTS5_VOCAB_INSTANCE ){
    rc = fts5VocabInstanceNewTerm(pCsr);
  }
  if( rc==SQLITE_OK && !pCsr->bEof
   && (eType!=FTS5_VOCAB_INSTANCE
    || pCsr->pFts5->pConfig->eDetail!=FTS5_DETAIL_NONE)

#endif
  return rc;
}
#endif /* SQLITE_CORE */
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */

/************** End of stmt.c ************************************************/




/* Return the source-id for this library */
SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/************************** End of sqlite3.c ******************************/

*/
#ifdef __cplusplus
extern "C" {
#endif


/*
** Facilitate override of interface linkage and calling conventions.
** Be aware that these macros may not be used within this particular
** translation of the amalgamation and its associated header file.
**
** The SQLITE_EXTERN and SQLITE_API macros are used to instruct the
** compiler that the target identifier should have external linkage.
**
** The SQLITE_CDECL macro is used to set the calling convention for
** public functions that accept a variable number of arguments.
**
** The SQLITE_APICALL macro is used to set the calling convention for
** public functions that accept a fixed number of arguments.
**
** The SQLITE_STDCALL macro is no longer used and is now deprecated.
**
** The SQLITE_CALLBACK macro is used to set the calling convention for
** function pointers.
**
** The SQLITE_SYSAPI macro is used to set the calling convention for
** functions provided by the operating system.
**
** Currently, the SQLITE_CDECL, SQLITE_APICALL, SQLITE_CALLBACK, and
** SQLITE_SYSAPI macros are used only when building for environments
** that require non-default calling conventions.
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif
#ifndef SQLITE_API
# define SQLITE_API
#endif

** been edited in any way since it was last checked in, then the last
** four hexadecimal digits of the hash may be modified.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.37.0"
#define SQLITE_VERSION_NUMBER 3037000
#define SQLITE_SOURCE_ID      "2021-07-21 15:42:05 60695359dc5d3bcba68a68e1842c40f4a01650eb5af408e02fb856fd8245e16d"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros

#define SQLITE_BUSY_TIMEOUT            (SQLITE_BUSY   |  (3<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
#define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
#define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))
#define SQLITE_CANTOPEN_DIRTYWAL       (SQLITE_CANTOPEN | (5<<8)) /* Not Used */
#define SQLITE_CANTOPEN_SYMLINK        (SQLITE_CANTOPEN | (6<<8))
#define SQLITE_CANTOPEN_EXISTS         (SQLITE_CANTOPEN | (7<<8))
#define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
#define SQLITE_CORRUPT_SEQUENCE        (SQLITE_CORRUPT | (2<<8))
#define SQLITE_CORRUPT_INDEX           (SQLITE_CORRUPT | (3<<8))
#define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
#define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
#define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
#define SQLITE_READONLY_DBMOVED        (SQLITE_READONLY | (4<<8))

*/
SQLITE_API void sqlite3_set_last_insert_rowid(sqlite3*,sqlite3_int64);

/*
** CAPI3REF: Count The Number Of Rows Modified
** METHOD: sqlite3
**
** ^These functions return the number of rows modified, inserted or
** deleted by the most recently completed INSERT, UPDATE or DELETE
** statement on the database connection specified by the only parameter.
** The two functions are identical except for the type of the return value
** and that if the number of rows modified by the most recent INSERT, UPDATE
** or DELETE is greater than the maximum value supported by type "int", then
** the return value of sqlite3_changes() is undefined. ^Executing any other
** type of SQL statement does not modify the value returned by these functions.

**
** ^Only changes made directly by the INSERT, UPDATE or DELETE statement are
** considered - auxiliary changes caused by [CREATE TRIGGER | triggers],
** [foreign key actions] or [REPLACE] constraint resolution are not counted.
**
** Changes to a view that are intercepted by
** [INSTEAD OF trigger | INSTEAD OF triggers] are not counted. ^The value

** <li> the [sqlite3_total_changes()] interface
** <li> the [count_changes pragma]
** <li> the [changes() SQL function]
** <li> the [data_version pragma]
** </ul>
*/
SQLITE_API int sqlite3_changes(sqlite3*);
SQLITE_API sqlite3_int64 sqlite3_changes64(sqlite3*);

/*
** CAPI3REF: Total Number Of Rows Modified
** METHOD: sqlite3
**
** ^These functions return the total number of rows inserted, modified or
** deleted by all [INSERT], [UPDATE] or [DELETE] statements completed
** since the database connection was opened, including those executed as
** part of trigger programs. The two functions are identical except for the
** type of the return value and that if the number of rows modified by the
** connection exceeds the maximum value supported by type "int", then
** the return value of sqlite3_total_changes() is undefined. ^Executing
** any other type of SQL statement does not affect the value returned by
** sqlite3_total_changes().
**
** ^Changes made as part of [foreign key actions] are included in the
** count, but those made as part of REPLACE constraint resolution are
** not. ^Changes to a view that are intercepted by INSTEAD OF triggers
** are not counted.
**
** The [sqlite3_total_changes(D)] interface only reports the number

** <li> the [count_changes pragma]
** <li> the [changes() SQL function]
** <li> the [data_version pragma]
** <li> the [SQLITE_FCNTL_DATA_VERSION] [file control]
** </ul>
*/
SQLITE_API int sqlite3_total_changes(sqlite3*);
SQLITE_API sqlite3_int64 sqlite3_total_changes64(sqlite3*);

/*
** CAPI3REF: Interrupt A Long-Running Query
** METHOD: sqlite3
**
** ^This function causes any pending database operation to abort and
** return at its earliest opportunity. This routine is typically

** ^(<dt>[SQLITE_OPEN_PRIVATECACHE]</dt>
** <dd>The database is opened [shared cache] disabled, overriding
** the default shared cache setting provided by
** [sqlite3_enable_shared_cache()].)^
**
** [[OPEN_NOFOLLOW]] ^(<dt>[SQLITE_OPEN_NOFOLLOW]</dt>
** <dd>The database filename is not allowed to be a symbolic link</dd>
**
** [[OPEN_EXCLUSIVE]] ^(<dt>[SQLITE_OPEN_EXCLUSIVE]</dt>
** <dd>This flag causes the open to fail if the database file already
** exists.  The open will only be success if this flag is used in combination
** with the SQLITE_OPEN_CREATE and SQLITE_OPEN_READWRITE flags and if
** the file does not previously exist.</dd>
** </dl>)^
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
** required combinations shown above optionally combined with other
** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
** then the behavior is undefined.
**

** bound parameter expansions.  ^The [SQLITE_OMIT_TRACE] compile-time
** option causes sqlite3_expanded_sql() to always return NULL.
**
** ^The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P)
** are managed by SQLite and are automatically freed when the prepared
** statement is finalized.
** ^The string returned by sqlite3_expanded_sql(P), on the other hand,
** is obtained from [sqlite3_malloc()] and must be freed by the application
** by passing it to [sqlite3_free()].
**
** ^The sqlite3_normalized_sql() interface is only available if
** the [SQLITE_ENABLE_NORMALIZE] compile-time option is defined.
*/
SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt);
SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt);
#ifdef SQLITE_ENABLE_NORMALIZE
SQLITE_API const char *sqlite3_normalized_sql(sqlite3_stmt *pStmt);
#endif

/*
** CAPI3REF: Determine If An SQL Statement Writes The Database
** METHOD: sqlite3_stmt
**
** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
** and only if the [prepared statement] X makes no direct changes to

** to report an error, though the commit will have still occurred. If the
** callback returns [SQLITE_ROW] or [SQLITE_DONE], or if it returns a value
** that does not correspond to any valid SQLite error code, the results
** are undefined.
**
** A single database handle may have at most a single write-ahead log callback
** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any
** previously registered write-ahead log callback. ^The return value is
** a copy of the third parameter from the previous call, if any, or 0.
** ^Note that the [sqlite3_wal_autocheckpoint()] interface and the
** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will
** overwrite any prior [sqlite3_wal_hook()] settings.
*/
SQLITE_API void *sqlite3_wal_hook(
  sqlite3*,
  int(*)(void *,sqlite3*,const char*,int),
  void*

** connection closes.  If the SQLITE_DESERIALIZE_RESIZEABLE bit is set, then
** SQLite will try to increase the buffer size using sqlite3_realloc64()
** if writes on the database cause it to grow larger than M bytes.
**
** The sqlite3_deserialize() interface will fail with SQLITE_BUSY if the
** database is currently in a read transaction or is involved in a backup
** operation.
**
** It is not possible to deserialized into the TEMP database.  If the
** S argument to sqlite3_deserialize(D,S,P,N,M,F) is "temp" then the
** function returns SQLITE_ERROR.
**
** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the
** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then
** [sqlite3_free()] is invoked on argument P prior to returning.
**
** This interface is omitted if SQLite is compiled with the
** [SQLITE_OMIT_DESERIALIZE] option.