Fossil

** the text of this file.  Search for "Begin file sqlite3.h" to find the start
** of the embedded sqlite3.h header file.) Additional code files may be needed
** if you want a wrapper to interface SQLite with your choice of programming
** language. The code for the "sqlite3" command-line shell is also in a
** separate file. This file contains only code for the core SQLite library.
**
** The content in this amalgamation comes from Fossil check-in
** 76fb3a908f45230b956cb659c754e47603e8.
** a49296de0061931badaf3db6b965131a78b1.
*/
#define SQLITE_CORE 1
#define SQLITE_AMALGAMATION 1
#ifndef SQLITE_PRIVATE
# define SQLITE_PRIVATE static
#endif
/************** Begin file sqliteInt.h ***************************************/

**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.46.0"
#define SQLITE_VERSION_NUMBER 3046000
#define SQLITE_SOURCE_ID      "2024-03-18 18:03:17 76fb3a908f45230b956cb659c754e47603e80aa72a2aad50d479437a9c013f61"
#define SQLITE_SOURCE_ID      "2024-03-26 11:14:52 a49296de0061931badaf3db6b965131a78b1c6c21b1eeb62815ea7adf767d0b3"

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

** [sqlite3_int64] parameter which is the default maximum size for an in-memory
** database created using [sqlite3_deserialize()].  This default maximum
** size can be adjusted up or down for individual databases using the
** [SQLITE_FCNTL_SIZE_LIMIT] [sqlite3_file_control|file-control].  If this
** configuration setting is never used, then the default maximum is determined
** by the [SQLITE_MEMDB_DEFAULT_MAXSIZE] compile-time option.  If that
** compile-time option is not set, then the default maximum is 1073741824.
**
** [[SQLITE_CONFIG_ROWID_IN_VIEW]]
** <dt>SQLITE_CONFIG_ROWID_IN_VIEW
** <dd>The SQLITE_CONFIG_ROWID_IN_VIEW option enables or disables the ability
** for VIEWs to have a ROWID.  The capability can only be enabled if SQLite is
** compiled with -DSQLITE_ALLOW_ROWID_IN_VIEW, in which case the capability
** defaults to on.  This configuration option queries the current setting or
** changes the setting to off or on.  The argument is a pointer to an integer.
** If that integer initially holds a value of 1, then the ability for VIEWs to
** have ROWIDs is activated.  If the integer initially holds zero, then the
** ability is deactivated.  Any other initial value for the integer leaves the
** setting unchanged.  After changes, if any, the integer is written with
** a 1 or 0, if the ability for VIEWs to have ROWIDs is on or off.  If SQLite
** is compiled without -DSQLITE_ALLOW_ROWID_IN_VIEW (which is the usual and
** recommended case) then the integer is always filled with zero, regardless
** if its initial value.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD         1  /* nil */
#define SQLITE_CONFIG_MULTITHREAD          2  /* nil */
#define SQLITE_CONFIG_SERIALIZED           3  /* nil */
#define SQLITE_CONFIG_MALLOC               4  /* sqlite3_mem_methods* */
#define SQLITE_CONFIG_GETMALLOC            5  /* sqlite3_mem_methods* */

#define SQLITE_CONFIG_WIN32_HEAPSIZE      23  /* int nByte */
#define SQLITE_CONFIG_PCACHE_HDRSZ        24  /* int *psz */
#define SQLITE_CONFIG_PMASZ               25  /* unsigned int szPma */
#define SQLITE_CONFIG_STMTJRNL_SPILL      26  /* int nByte */
#define SQLITE_CONFIG_SMALL_MALLOC        27  /* boolean */
#define SQLITE_CONFIG_SORTERREF_SIZE      28  /* int nByte */
#define SQLITE_CONFIG_MEMDB_MAXSIZE       29  /* sqlite3_int64 */
#define SQLITE_CONFIG_ROWID_IN_VIEW       30  /* int* */

/*
** CAPI3REF: Database Connection Configuration Options
**
** These constants are the available integer configuration options that
** can be passed as the second argument to the [sqlite3_db_config()] interface.
**

#define SQLITE_DROP_VTABLE          30   /* Table Name      Module Name     */
#define SQLITE_FUNCTION             31   /* NULL            Function Name   */
#define SQLITE_SAVEPOINT            32   /* Operation       Savepoint Name  */
#define SQLITE_COPY                  0   /* No longer used */
#define SQLITE_RECURSIVE            33   /* NULL            NULL            */

/*
** CAPI3REF: Tracing And Profiling Functions
** METHOD: sqlite3
** CAPI3REF: Deprecated Tracing And Profiling Functions
** DEPRECATED
**
** These routines are deprecated. Use the [sqlite3_trace_v2()] interface
** instead of the routines described here.
**
** These routines register callback functions that can be used for
** tracing and profiling the execution of SQL statements.
**

#endif


/* Does the table have a rowid */
#define HasRowid(X)     (((X)->tabFlags & TF_WithoutRowid)==0)
#define VisibleRowid(X) (((X)->tabFlags & TF_NoVisibleRowid)==0)

/* Macro is true if the SQLITE_ALLOW_ROWID_IN_VIEW (mis-)feature is
** available.  By default, this macro is false
*/
#ifndef SQLITE_ALLOW_ROWID_IN_VIEW
# define ViewCanHaveRowid     0
#else
# define ViewCanHaveRowid     (sqlite3Config.mNoVisibleRowid==0)
#endif

/*
** Each foreign key constraint is an instance of the following structure.
**
** A foreign key is associated with two tables.  The "from" table is
** the table that contains the REFERENCES clause that creates the foreign
** key.  The "to" table is the table that is named in the REFERENCES clause.
** Consider this example:

#endif
#ifndef SQLITE_OMIT_DESERIALIZE
  sqlite3_int64 mxMemdbSize;        /* Default max memdb size */
#endif
#ifndef SQLITE_UNTESTABLE
  int (*xTestCallback)(int);        /* Invoked by sqlite3FaultSim() */
#endif
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
  u32 mNoVisibleRowid;              /* TF_NoVisibleRowid if the ROWID_IN_VIEW
                                    ** feature is disabled.  0 if rowids can
                                    ** occur in views. */
#endif
  int bLocaltimeFault;              /* True to fail localtime() calls */
  int (*xAltLocaltime)(const void*,void*); /* Alternative localtime() routine */
  int iOnceResetThreshold;          /* When to reset OP_Once counters */
  u32 szSorterRef;                  /* Min size in bytes to use sorter-refs */
  unsigned int iPrngSeed;           /* Alternative fixed seed for the PRNG */
  /* vvvv--- must be last ---vvv */
#ifdef SQLITE_DEBUG

# define sqlite3MutexWarnOnContention(x)
#endif

#ifndef SQLITE_OMIT_FLOATING_POINT
# define EXP754 (((u64)0x7ff)<<52)
# define MAN754 ((((u64)1)<<52)-1)
# define IsNaN(X) (((X)&EXP754)==EXP754 && ((X)&MAN754)!=0)
# define IsOvfl(X) (((X)&EXP754)==EXP754)
SQLITE_PRIVATE   int sqlite3IsNaN(double);
SQLITE_PRIVATE   int sqlite3IsOverflow(double);
#else
# define IsNaN(X)         0
# define sqlite3IsNaN(X)  0
# define IsNaN(X)             0
# define sqlite3IsNaN(X)      0
# define sqlite3IsOVerflow(X) 0
#endif

/*
** An instance of the following structure holds information about SQL
** functions arguments that are the parameters to the printf() function.
*/
struct PrintfArguments {

#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
  "4_BYTE_ALIGNED_MALLOC",
#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_ROWID_IN_VIEW
  "ALLOW_ROWID_IN_VIEW",
#endif
#ifdef SQLITE_ALLOW_URI_AUTHORITY
  "ALLOW_URI_AUTHORITY",
#endif
#ifdef SQLITE_ATOMIC_INTRINSICS
  "ATOMIC_INTRINSICS=" CTIMEOPT_VAL(SQLITE_ATOMIC_INTRINSICS),
#endif

#endif
#ifndef SQLITE_OMIT_DESERIALIZE
   SQLITE_MEMDB_DEFAULT_MAXSIZE,   /* mxMemdbSize */
#endif
#ifndef SQLITE_UNTESTABLE
   0,                         /* xTestCallback */
#endif
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
   0,                         /* mNoVisibleRowid.  0 == allow rowid-in-view */
#endif
   0,                         /* bLocaltimeFault */
   0,                         /* xAltLocaltime */
   0x7ffffffe,                /* iOnceResetThreshold */
   SQLITE_DEFAULT_SORTERREF_SIZE,   /* szSorterRef */
   0,                         /* iPrngSeed */
#ifdef SQLITE_DEBUG
   {0,0,0,0,0,0},             /* aTune */

  rc = isnan(x);
#endif /* HAVE_ISNAN */
  testcase( rc );
  return rc;
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Return true if the floating point value is NaN or +Inf or -Inf.
*/
SQLITE_PRIVATE int sqlite3IsOverflow(double x){
  int rc;   /* The value return */
  u64 y;
  memcpy(&y,&x,sizeof(y));
  rc = IsOvfl(y);
  return rc;
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

/*
** Compute a string length that is limited to what can be stored in
** lower 30 bits of a 32-bit signed integer.
**
** The value returned will never be negative.  Nor will it ever be greater
** than the actual length of the string.  For very long strings (greater
** than 1GiB) the value returned might be less than the true string length.

    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!=EISDIR && isReadWrite ){
        /* Failed to open the file for read/write access. Try read-only. */
        UnixUnusedFd *pReadonly = 0;
        flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
        openFlags &= ~(O_RDWR|O_CREAT);
        flags |= SQLITE_OPEN_READONLY;
        openFlags |= O_RDONLY;
        isReadonly = 1;
        pReadonly = findReusableFd(zName, flags);
        if( pReadonly ){
          fd = pReadonly->fd;
          sqlite3_free(pReadonly);
        }else{
        fd = robust_open(zName, openFlags, openMode);
          fd = robust_open(zName, openFlags, openMode);
        }
      }
    }
    if( fd<0 ){
      int rc2 = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName);
      if( rc==SQLITE_OK ) rc = rc2;
      goto open_finished;
    }

      *(i64*)pOut = res;
      return 0;
    }
    return 1;
  }
  if( flags & SQLITE_SCANSTAT_COMPLEX ){
    idx = iScan;
    pScan = &p->aScan[idx];
  }else{
    /* If the COMPLEX flag is clear, then this function must ignore any
    ** ScanStatus structures with ScanStatus.addrLoop set to 0. */
    for(idx=0; idx<p->nScan; idx++){
      pScan = &p->aScan[idx];
      if( pScan->zName ){
        iScan--;
        if( iScan<0 ) break;
      }
    }
  }
  if( idx>=p->nScan ) return 1;
  assert( pScan==0 || pScan==&p->aScan[idx] );
  pScan = &p->aScan[idx];

  switch( iScanStatusOp ){
    case SQLITE_SCANSTAT_NLOOP: {
      if( pScan->addrLoop>0 ){
        *(sqlite3_int64*)pOut = aOp[pScan->addrLoop].nExec;
      }else{
        *(sqlite3_int64*)pOut = -1;

  break;
}

/* Opcode: IfSizeBetween P1 P2 P3 P4 *
**
** Let N be the approximate number of rows in the table or index
** with cursor P1 and let X be 10*log2(N) if N is positive or -1
** if N is zero. Thus X will be within the range of -1 to 640, inclusive
** if N is zero.
**
** Jump to P2 if X is in between P3 and P4, inclusive.
*/
case OP_IfSizeBetween: {        /* jump */
  VdbeCursor *pC;
  BtCursor *pCrsr;
  int res;
  i64 sz;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  assert( pOp->p4type==P4_INT32 );
  assert( pOp->p3>=-1 && pOp->p3<=640 );
  assert( pOp->p4.i>=-1 && pOp->p4.i<=640 );
  assert( pOp->p3>=-1 && pOp->p3<=640*2 );
  assert( pOp->p4.i>=-1 && pOp->p4.i<=640*2 );
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  pCrsr = pC->uc.pCursor;
  assert( pCrsr );
  rc = sqlite3BtreeFirst(pCrsr, &res);
  if( rc ) goto abort_due_to_error;
  if( res!=0 ){

            if( pItem->fg.isNestedFrom ){
              sqlite3SrcItemColumnUsed(pItem, j);
            }
            break;
          }
        }
        if( 0==cnt && VisibleRowid(pTab) ){
          /* pTab is a potential ROWID match.  Keep track of it and match
          ** the ROWID later if that seems appropriate.  (Search for "cntTab"
          ** to find related code.)  Only allow a ROWID match if there is
          ** a single ROWID match candidate.
          */
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
          /* In SQLITE_ALLOW_ROWID_IN_VIEW mode, allow a ROWID match
          ** if there is a single VIEW candidate or if there is a single
          ** non-VIEW candidate plus multiple VIEW candidates.  In other
          ** words non-VIEW candidate terms take precedence over VIEWs.
          */
          if( cntTab==0
           || (cntTab==1
               && ALWAYS(pMatch!=0)
               && ALWAYS(pMatch->pTab!=0)
               && (pMatch->pTab->tabFlags & TF_Ephemeral)!=0
               && (pTab->tabFlags & TF_Ephemeral)==0)
          ){
            cntTab = 1;
            pMatch = pItem;
          }else{
          cntTab++;
            cntTab++;
          }
#else
          /* The (much more common) non-SQLITE_ALLOW_ROWID_IN_VIEW case is
          ** simpler since we require exactly one candidate, which will
          ** always be a non-VIEW
          */
          cntTab++;
          pMatch = pItem;
#endif
        }
      }
      if( pMatch ){
        pExpr->iTable = pMatch->iCursor;
        assert( ExprUseYTab(pExpr) );
        pExpr->y.pTab = pMatch->pTab;
        if( (pMatch->fg.jointype & (JT_LEFT|JT_LTORJ))!=0 ){

    }
#endif /* !defined(SQLITE_OMIT_TRIGGER) || !defined(SQLITE_OMIT_UPSERT) */

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

    /*
    ** If the input is of the form Z (not Y.Z or X.Y.Z) then the name Z
    ** might refer to an result-set alias.  This happens, for example, when

    pNewItem->fg = pOldItem->fg;
    pNewItem->iCursor = pOldItem->iCursor;
    pNewItem->addrFillSub = pOldItem->addrFillSub;
    pNewItem->regReturn = pOldItem->regReturn;
    pNewItem->regResult = pOldItem->regResult;
    if( pNewItem->fg.isIndexedBy ){
      pNewItem->u1.zIndexedBy = sqlite3DbStrDup(db, pOldItem->u1.zIndexedBy);
    }else if( pNewItem->fg.isTabFunc ){
      pNewItem->u1.pFuncArg =
          sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags);
    }else{
      pNewItem->u1.nRow = pOldItem->u1.nRow;
    }
    pNewItem->u2 = pOldItem->u2;
    if( pNewItem->fg.isCte ){
      pNewItem->u2.pCteUse->nUse++;
    }
    if( pNewItem->fg.isTabFunc ){
      pNewItem->u1.pFuncArg =
          sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags);
    }
    pTab = pNewItem->pTab = pOldItem->pTab;
    if( pTab ){
      pTab->nTabRef++;
    }
    pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags);
    if( pOldItem->fg.isUsing ){
      assert( pNewItem->fg.isUsing );

      if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){
        return WRC_Continue;
      }
      /* no break */ deliberate_fall_through
    case TK_IF_NULL_ROW:
    case TK_REGISTER:
    case TK_DOT:
    case TK_RAISE:
      testcase( pExpr->op==TK_REGISTER );
      testcase( pExpr->op==TK_IF_NULL_ROW );
      testcase( pExpr->op==TK_DOT );
      testcase( pExpr->op==TK_RAISE );
      pWalker->eCode = 0;
      return WRC_Abort;
    case TK_VARIABLE:
      if( pWalker->eCode==5 ){
        /* Silently convert bound parameters that appear inside of CREATE
        ** statements into a NULL when parsing the CREATE statement text out
        ** of the sqlite_schema table */

    case TK_INTEGER:
    case TK_STRING:
    case TK_FLOAT:
    case TK_BLOB:
      return 0;
    case TK_COLUMN:
      assert( ExprUseYTab(p) );
      return ExprHasProperty(p, EP_CanBeNull) ||
             NEVER(p->y.pTab==0) ||  /* Reference to column of index on expr */
             (p->iColumn>=0
      return ExprHasProperty(p, EP_CanBeNull)
          || NEVER(p->y.pTab==0) /* Reference to column of index on expr */
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
          || (p->iColumn==XN_ROWID && IsView(p->y.pTab))
#endif
          || (p->iColumn>=0
              && p->y.pTab->aCol!=0 /* Possible due to prior error */
              && ALWAYS(p->iColumn<p->y.pTab->nCol)
              && p->y.pTab->aCol[p->iColumn].notNull==0);
    default:
      return 1;
  }
}

          regOut = reg+1+iPos-(iPos>iColPos);
        }else{
          regOut = reg+1+nField;
        }
        if( i==pTab->iPKey ){
          sqlite3VdbeAddOp2(v, OP_Null, 0, regOut);
        }else{
          char aff = pTab->aCol[i].affinity;
          if( aff==SQLITE_AFF_REAL ){
            pTab->aCol[i].affinity = SQLITE_AFF_NUMERIC;
          }
          sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, i, regOut);
          pTab->aCol[i].affinity = aff;
        }
        nField++;
      }
    }
    if( nField==0 ){
      /* dbsqlfuzz 5f09e7bcc78b4954d06bf9f2400d7715f48d1fef */
      pParse->nMem++;

      SelectDest dest;    /* Where the SELECT should store results */
      int regYield;       /* Register holding co-routine entry-point */
      int addrTop;        /* Top of the co-routine */
      int regRec;         /* A record to be insert into the new table */
      int regRowid;       /* Rowid of the next row to insert */
      int addrInsLoop;    /* Top of the loop for inserting rows */
      Table *pSelTab;     /* A table that describes the SELECT results */
      int iCsr;           /* Write cursor on the new table */

      if( IN_SPECIAL_PARSE ){
        pParse->rc = SQLITE_ERROR;
        pParse->nErr++;
        return;
      }
      iCsr = pParse->nTab++;
      regYield = ++pParse->nMem;
      regRec = ++pParse->nMem;
      regRowid = ++pParse->nMem;
      assert(pParse->nTab==1);
      sqlite3MayAbort(pParse);
      sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
      sqlite3VdbeAddOp3(v, OP_OpenWrite, iCsr, pParse->regRoot, iDb);
      sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
      pParse->nTab = 2;
      addrTop = sqlite3VdbeCurrentAddr(v) + 1;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
      if( pParse->nErr ) return;
      pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect, SQLITE_AFF_BLOB);
      if( pSelTab==0 ) return;
      assert( p->aCol==0 );
      p->nCol = p->nNVCol = pSelTab->nCol;
      p->aCol = pSelTab->aCol;
      pSelTab->nCol = 0;
      pSelTab->aCol = 0;
      sqlite3DeleteTable(db, pSelTab);
      sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield);
      sqlite3Select(pParse, pSelect, &dest);
      if( pParse->nErr ) return;
      sqlite3VdbeEndCoroutine(v, regYield);
      sqlite3VdbeJumpHere(v, addrTop - 1);
      addrInsLoop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm);
      VdbeCoverage(v);
      sqlite3VdbeAddOp3(v, OP_MakeRecord, dest.iSdst, dest.nSdst, regRec);
      sqlite3TableAffinity(v, p, 0);
      sqlite3VdbeAddOp2(v, OP_NewRowid, 1, regRowid);
      sqlite3VdbeAddOp3(v, OP_Insert, 1, regRec, regRowid);
      sqlite3VdbeAddOp2(v, OP_NewRowid, iCsr, regRowid);
      sqlite3VdbeAddOp3(v, OP_Insert, iCsr, regRec, regRowid);
      sqlite3VdbeGoto(v, addrInsLoop);
      sqlite3VdbeJumpHere(v, addrInsLoop);
      sqlite3VdbeAddOp1(v, OP_Close, 1);
      sqlite3VdbeAddOp1(v, OP_Close, iCsr);
    }

    /* Compute the complete text of the CREATE statement */
    if( pSelect ){
      zStmt = createTableStmt(db, p);
    }else{
      Token *pEnd2 = tabOpts ? &pParse->sLastToken : pEnd;

  p = pParse->pNewTable;
  if( p==0 || pParse->nErr ) goto create_view_fail;

  /* Legacy versions of SQLite allowed the use of the magic "rowid" column
  ** on a view, even though views do not have rowids.  The following flag
  ** setting fixes this problem.  But the fix can be disabled by compiling
  ** with -DSQLITE_ALLOW_ROWID_IN_VIEW in case there are legacy apps that
  ** depend upon the old buggy behavior. */
#ifndef SQLITE_ALLOW_ROWID_IN_VIEW
  p->tabFlags |= TF_NoVisibleRowid;
  ** depend upon the old buggy behavior.  The ability can also be toggled
  ** using sqlite3_config(SQLITE_CONFIG_ROWID_IN_VIEW,...) */
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
  p->tabFlags |= sqlite3Config.mNoVisibleRowid; /* Optional. Allow by default */
#else
  p->tabFlags |= TF_NoVisibleRowid;             /* Never allow rowid in view */
#endif

  sqlite3TwoPartName(pParse, pName1, pName2, &pName);
  iDb = sqlite3SchemaToIndex(db, p->pSchema);
  sqlite3FixInit(&sFix, pParse, iDb, "view", pName);
  if( sqlite3FixSelect(&sFix, pSelect) ) goto create_view_fail;

static void sumFinalize(sqlite3_context *context){
  SumCtx *p;
  p = sqlite3_aggregate_context(context, 0);
  if( p && p->cnt>0 ){
    if( p->approx ){
      if( p->ovrfl ){
        sqlite3_result_error(context,"integer overflow",-1);
      }else if( !sqlite3IsNaN(p->rErr) ){
      }else if( !sqlite3IsOverflow(p->rErr) ){
        sqlite3_result_double(context, p->rSum+p->rErr);
      }else{
        sqlite3_result_double(context, p->rSum);
      }
    }else{
      sqlite3_result_int64(context, p->iSum);
    }
  }
}
static void avgFinalize(sqlite3_context *context){
  SumCtx *p;
  p = sqlite3_aggregate_context(context, 0);
  if( p && p->cnt>0 ){
    double r;
    if( p->approx ){
      r = p->rSum;
      if( !sqlite3IsNaN(p->rErr) ) r += p->rErr;
      if( !sqlite3IsOverflow(p->rErr) ) r += p->rErr;
    }else{
      r = (double)(p->iSum);
    }
    sqlite3_result_double(context, r/(double)p->cnt);
  }
}
static void totalFinalize(sqlite3_context *context){
  SumCtx *p;
  double r = 0.0;
  p = sqlite3_aggregate_context(context, 0);
  if( p ){
    if( p->approx ){
      r = p->rSum;
      if( !sqlite3IsNaN(p->rErr) ) r += p->rErr;
      if( !sqlite3IsOverflow(p->rErr) ) r += p->rErr;
    }else{
      r = (double)(p->iSum);
    }
  }
  sqlite3_result_double(context, r);
}

** Return true if all expressions in the expression-list passed as the
** only argument are both constant and have no affinity.
*/
static int exprListIsNoAffinity(Parse *pParse, ExprList *pRow){
  int ii;
  if( exprListIsConstant(pParse,pRow)==0 ) return 0;
  for(ii=0; ii<pRow->nExpr; ii++){
    Expr *pExpr = pRow->a[ii].pExpr;
    assert( pExpr->op!=TK_RAISE );
    assert( pRow->a[ii].pExpr->affExpr==0 );
    if( 0!=sqlite3ExprAffinity(pRow->a[ii].pExpr) ) return 0;
    assert( pExpr->affExpr==0 );
    if( 0!=sqlite3ExprAffinity(pExpr) ) return 0;
  }
  return 1;

}

/*
** This function is called by the parser for the second and subsequent

  pIdxInfo->estimatedCost = (double)1;
  if( pTab->nHidden==0 ){ return SQLITE_OK; }
  pConstraint = pIdxInfo->aConstraint;
  seen[0] = 0;
  seen[1] = 0;
  for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){
    if( pConstraint->usable==0 ) continue;
    if( pConstraint->iColumn < pTab->iHidden ) continue;
    if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue;
    if( pConstraint->iColumn < pTab->iHidden ) continue;
    if( pConstraint->usable==0 ) return SQLITE_CONSTRAINT;
    j = pConstraint->iColumn - pTab->iHidden;
    assert( j < 2 );
    seen[j] = i+1;
  }
  if( seen[0]==0 ){
    pIdxInfo->estimatedCost = (double)2147483647;
    pIdxInfo->estimatedRows = 2147483647;
    return SQLITE_OK;
  }
  j = seen[0]-1;
  pIdxInfo->aConstraintUsage[j].argvIndex = 1;
  pIdxInfo->aConstraintUsage[j].omit = 1;
  if( seen[1]==0 ) return SQLITE_OK;
  pIdxInfo->estimatedCost = (double)20;
  pIdxInfo->estimatedRows = 20;
  if( seen[1] ){
  j = seen[1]-1;
  pIdxInfo->aConstraintUsage[j].argvIndex = 2;
  pIdxInfo->aConstraintUsage[j].omit = 1;
    j = seen[1]-1;
    pIdxInfo->aConstraintUsage[j].argvIndex = 2;
    pIdxInfo->aConstraintUsage[j].omit = 1;
  }
  return SQLITE_OK;
}

/* Create a new cursor for the pragma virtual table */
static int pragmaVtabOpen(sqlite3_vtab *pVtab, sqlite3_vtab_cursor **ppCursor){
  PragmaVtabCursor *pCsr;
  pCsr = (PragmaVtabCursor*)sqlite3_malloc(sizeof(*pCsr));

  int bSeq;                       /* True if sorter record includes seq. no. */
  int nRefKey = 0;
  struct ExprList_item *aOutEx = p->pEList->a;
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
  int addrExplain;                /* Address of OP_Explain instruction */
#endif

  nKey = pOrderBy->nExpr - pSort->nOBSat;
  if( pSort->nOBSat==0 || nKey==1 ){
  ExplainQueryPlan2(addrExplain, (pParse, 0,
        "USE TEMP B-TREE FOR %sORDER BY", pSort->nOBSat>0?"RIGHT PART OF ":"")
  );
    ExplainQueryPlan2(addrExplain, (pParse, 0,
      "USE TEMP B-TREE FOR %sORDER BY", pSort->nOBSat?"LAST TERM OF ":""
    ));
  }else{
    ExplainQueryPlan2(addrExplain, (pParse, 0,
      "USE TEMP B-TREE FOR LAST %d TERMS OF ORDER BY", nKey
    ));
  }
  sqlite3VdbeScanStatusRange(v, addrExplain,pSort->addrPush,pSort->addrPushEnd);
  sqlite3VdbeScanStatusCounters(v, addrExplain, addrExplain, pSort->addrPush);


  assert( addrBreak<0 );
  if( pSort->labelBkOut ){
    sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut);

    if( eDest==SRT_EphemTab || eDest==SRT_Table ){
      regRow = sqlite3GetTempReg(pParse);
      nColumn = 0;
    }else{
      regRow = sqlite3GetTempRange(pParse, nColumn);
    }
  }
  nKey = pOrderBy->nExpr - pSort->nOBSat;
  if( pSort->sortFlags & SORTFLAG_UseSorter ){
    int regSortOut = ++pParse->nMem;
    iSortTab = pParse->nTab++;
    if( pSort->labelBkOut ){
      addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
    }
    sqlite3VdbeAddOp3(v, OP_OpenPseudo, iSortTab, regSortOut,

      assert( pTab && ExprUseYTab(pExpr) && pExpr->y.pTab==pTab );
      if( pS ){
        /* The "table" is actually a sub-select or a view in the FROM clause
        ** of the SELECT statement. Return the declaration type and origin
        ** data for the result-set column of the sub-select.
        */
        if( iCol<pS->pEList->nExpr
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
         && iCol>=0
         && (!ViewCanHaveRowid || iCol>=0)
#else
         && ALWAYS(iCol>=0)
#endif
        ){
          /* If iCol is less than zero, then the expression requests the
          ** rowid of the sub-select or view. This expression is legal (see
          ** test case misc2.2.2) - it always evaluates to NULL.
          */
          NameContext sNC;
          Expr *p = pS->pEList->a[iCol].pExpr;

**       the ON/USING filter expression from the left side of a RIGHT JOIN
**       over to the right side, which leads to incorrect answers.  See
**       also restriction (6) in sqlite3ExprIsSingleTableConstraint().
**
**  (10) The inner query is not the right-hand table of a RIGHT JOIN.
**
**  (11) The subquery is not a VALUES clause
**
**  (12) The WHERE clause is not "rowid ISNULL" or the equivalent.  This
**       case only comes up if SQLite is compiled using
**       SQLITE_ALLOW_ROWID_IN_VIEW.
**
** Return 0 if no changes are made and non-zero if one or more WHERE clause
** terms are duplicated into the subquery.
*/
static int pushDownWhereTerms(
  Parse *pParse,        /* Parse context (for malloc() and error reporting) */
  Select *pSubq,        /* The subquery whose WHERE clause is to be augmented */

  ){
    return 0; /* restriction (4) */
  }
  if( ExprHasProperty(pWhere,EP_OuterON)
   && pWhere->w.iJoin!=iCursor
  ){
    return 0; /* restriction (5) */
  }
#endif

#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
  if( ViewCanHaveRowid && (pWhere->op==TK_ISNULL || pWhere->op==TK_NOTNULL) ){
    Expr *pLeft = pWhere->pLeft;
    if( ALWAYS(pLeft)
     && pLeft->op==TK_COLUMN
     && pLeft->iColumn < 0
    ){
      return 0;  /* Restriction (12) */
    }
  }
#endif

  if( sqlite3ExprIsSingleTableConstraint(pWhere, pSrcList, iSrc) ){
    nChng++;
    pSubq->selFlags |= SF_PushDown;
    while( pSubq ){

    pTab->zName = sqlite3DbStrDup(pParse->db, pFrom->zAlias);
  }else{
    pTab->zName = sqlite3MPrintf(pParse->db, "%!S", pFrom);
  }
  while( pSel->pPrior ){ pSel = pSel->pPrior; }
  sqlite3ColumnsFromExprList(pParse, pSel->pEList,&pTab->nCol,&pTab->aCol);
  pTab->iPKey = -1;
  pTab->eTabType = TABTYP_VIEW;
  pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) );
#ifndef SQLITE_ALLOW_ROWID_IN_VIEW
  /* The usual case - do not allow ROWID on a subquery */
  pTab->tabFlags |= TF_Ephemeral | TF_NoVisibleRowid;
#else
  pTab->tabFlags |= TF_Ephemeral;  /* Legacy compatibility mode */
  /* Legacy compatibility mode */
  pTab->tabFlags |= TF_Ephemeral | sqlite3Config.mNoVisibleRowid;
#endif
  return pParse->nErr ? SQLITE_ERROR : SQLITE_OK;
}


/*
** Check the N SrcItem objects to the right of pBase.  (N might be zero!)

          if( db->mallocFailed ) break;
          assert( (int)pFrom->fg.isNestedFrom == IsNestedFrom(pFrom->pSelect) );
          if( pFrom->fg.isNestedFrom ){
            assert( pFrom->pSelect!=0 );
            pNestedFrom = pFrom->pSelect->pEList;
            assert( pNestedFrom!=0 );
            assert( pNestedFrom->nExpr==pTab->nCol );
            assert( VisibleRowid(pTab)==0 );
            assert( VisibleRowid(pTab)==0 || ViewCanHaveRowid );
          }else{
            if( zTName && sqlite3StrICmp(zTName, zTabName)!=0 ){
              continue;
            }
            pNestedFrom = 0;
            iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
            zSchemaName = iDb>=0 ? db->aDb[iDb].zDbSName : "*";

                pX->fg.bUsingTerm = 1;
              }
            }
          }else{
            pUsing = 0;
          }

          nAdd = pTab->nCol + (VisibleRowid(pTab) && (selFlags&SF_NestedFrom));
          nAdd = pTab->nCol;
          if( VisibleRowid(pTab) && (selFlags & SF_NestedFrom)!=0 ) nAdd++;
          for(j=0; j<nAdd; j++){
            const char *zName;
            struct ExprList_item *pX; /* Newly added ExprList term */

            if( j==pTab->nCol ){
              zName = sqlite3RowidAlias(pTab);
              if( zName==0 ) continue;

            pNew = sqlite3ExprListAppend(pParse, pNew, pExpr);
            if( pNew==0 ){
              break;  /* OOM */
            }
            pX = &pNew->a[pNew->nExpr-1];
            assert( pX->zEName==0 );
            if( (selFlags & SF_NestedFrom)!=0 && !IN_RENAME_OBJECT ){
              if( pNestedFrom ){
              if( pNestedFrom && (!ViewCanHaveRowid || j<pNestedFrom->nExpr) ){
                assert( j<pNestedFrom->nExpr );
                pX->zEName = sqlite3DbStrDup(db, pNestedFrom->a[j].zEName);
                testcase( pX->zEName==0 );
              }else{
                pX->zEName = sqlite3MPrintf(db, "%s.%s.%s",
                                           zSchemaName, zTabName, zName);
                testcase( pX->zEName==0 );
              }

*/
SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){
  VtabCtx *pCtx;
  int rc = SQLITE_OK;
  Table *pTab;
  Parse sParse;
  int initBusy;
  int i;
  const unsigned char *z;
  static const u8 aKeyword[] = { TK_CREATE, TK_TABLE, 0 };

#ifdef SQLITE_ENABLE_API_ARMOR
  if( !sqlite3SafetyCheckOk(db) || zCreateTable==0 ){
    return SQLITE_MISUSE_BKPT;
  }
#endif

  /* Verify that the first two keywords in the CREATE TABLE statement
  ** really are "CREATE" and "TABLE".  If this is not the case, then
  ** sqlite3_declare_vtab() is being misused.
  */
  z = (const unsigned char*)zCreateTable;
  for(i=0; aKeyword[i]; i++){
    int tokenType = 0;
    do{ z += sqlite3GetToken(z, &tokenType); }while( tokenType==TK_SPACE );
    if( tokenType!=aKeyword[i] ) return SQLITE_MISUSE_BKPT;
  }

  sqlite3_mutex_enter(db->mutex);
  pCtx = db->pVtabCtx;
  if( !pCtx || pCtx->bDeclared ){
    sqlite3Error(db, SQLITE_MISUSE_BKPT);
    sqlite3_mutex_leave(db->mutex);
    return SQLITE_MISUSE_BKPT;
  }

  pTab = pCtx->pTab;
  assert( IsVirtual(pTab) );

  sqlite3ParseObjectInit(&sParse, db);
  sParse.eParseMode = PARSE_MODE_DECLARE_VTAB;
  sParse.disableTriggers = 1;
  /* We should never be able to reach this point while loading the
  ** schema.  Nevertheless, defend against that (turn off db->init.busy)
  ** in case a bug arises. */
  assert( db->init.busy==0 );
  initBusy = db->init.busy;
  db->init.busy = 0;
  sParse.nQueryLoop = 1;
  if( SQLITE_OK==sqlite3RunParser(&sParse, zCreateTable)
   && ALWAYS(sParse.pNewTable!=0)
   && ALWAYS(!db->mallocFailed)
   && IsOrdinaryTable(sParse.pNewTable)
  if( SQLITE_OK==sqlite3RunParser(&sParse, zCreateTable) ){
    assert( sParse.pNewTable!=0 );
    assert( !db->mallocFailed );
    assert( IsOrdinaryTable(sParse.pNewTable) );
  ){
    assert( sParse.zErrMsg==0 );
    if( !pTab->aCol ){
      Table *pNew = sParse.pNewTable;
      Index *pIdx;
      pTab->aCol = pNew->aCol;
      sqlite3ExprListDelete(db, pNew->u.tab.pDfltList);
      pTab->nNVCol = pTab->nCol = pNew->nCol;

/*
** Two routines for printing the content of an sqlite3_index_info
** structure.  Used for testing and debugging only.  If neither
** SQLITE_TEST or SQLITE_DEBUG are defined, then these routines
** are no-ops.
*/
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(WHERETRACE_ENABLED)
static void whereTraceIndexInfoInputs(sqlite3_index_info *p){
static void whereTraceIndexInfoInputs(
  sqlite3_index_info *p,   /* The IndexInfo object */
  Table *pTab              /* The TABLE that is the virtual table */
){
  int i;
  if( (sqlite3WhereTrace & 0x10)==0 ) return;
  sqlite3DebugPrintf("sqlite3_index_info inputs for %s:\n", pTab->zName);
  for(i=0; i<p->nConstraint; i++){
    sqlite3DebugPrintf(
       "  constraint[%d]: col=%d termid=%d op=%d usabled=%d collseq=%s\n",
       i,
       p->aConstraint[i].iColumn,
       p->aConstraint[i].iTermOffset,
       p->aConstraint[i].op,
       p->aConstraint[i].usable,
       sqlite3_vtab_collation(p,i));
  }
  for(i=0; i<p->nOrderBy; i++){
    sqlite3DebugPrintf("  orderby[%d]: col=%d desc=%d\n",
       i,
       p->aOrderBy[i].iColumn,
       p->aOrderBy[i].desc);
  }
}
static void whereTraceIndexInfoOutputs(sqlite3_index_info *p){
static void whereTraceIndexInfoOutputs(
  sqlite3_index_info *p,   /* The IndexInfo object */
  Table *pTab              /* The TABLE that is the virtual table */
){
  int i;
  if( (sqlite3WhereTrace & 0x10)==0 ) return;
  sqlite3DebugPrintf("sqlite3_index_info outputs for %s:\n", pTab->zName);
  for(i=0; i<p->nConstraint; i++){
    sqlite3DebugPrintf("  usage[%d]: argvIdx=%d omit=%d\n",
       i,
       p->aConstraintUsage[i].argvIndex,
       p->aConstraintUsage[i].omit);
  }
  sqlite3DebugPrintf("  idxNum=%d\n", p->idxNum);
  sqlite3DebugPrintf("  idxStr=%s\n", p->idxStr);
  sqlite3DebugPrintf("  orderByConsumed=%d\n", p->orderByConsumed);
  sqlite3DebugPrintf("  estimatedCost=%g\n", p->estimatedCost);
  sqlite3DebugPrintf("  estimatedRows=%lld\n", p->estimatedRows);
}
#else
#define whereTraceIndexInfoInputs(A)
#define whereTraceIndexInfoOutputs(A)
#define whereTraceIndexInfoInputs(A,B)
#define whereTraceIndexInfoOutputs(A,B)
#endif

/*
** We know that pSrc is an operand of an outer join.  Return true if
** pTerm is a constraint that is compatible with that join.
**
** pTerm must be EP_OuterON if pSrc is the right operand of an

  ** columns that are needed by the query.  With a covering index, the
  ** original table never needs to be accessed.  Automatic indices must
  ** be a covering index because the index will not be updated if the
  ** original table changes and the index and table cannot both be used
  ** if they go out of sync.
  */
  if( IsView(pTable) ){
    extraCols = ALLBITS;
    extraCols = ALLBITS & ~idxCols;
  }else{
    extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1));
  }
  mxBitCol = MIN(BMS-1,pTable->nCol);
  testcase( pTable->nCol==BMS-1 );
  testcase( pTable->nCol==BMS-2 );
  for(i=0; i<mxBitCol; i++){

** caller to eventually free p->idxStr if p->needToFreeIdxStr indicates
** that this is required.
*/
static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){
  sqlite3_vtab *pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab;
  int rc;

  whereTraceIndexInfoInputs(p);
  whereTraceIndexInfoInputs(p, pTab);
  pParse->db->nSchemaLock++;
  rc = pVtab->pModule->xBestIndex(pVtab, p);
  pParse->db->nSchemaLock--;
  whereTraceIndexInfoOutputs(p);
  whereTraceIndexInfoOutputs(p, pTab);

  if( rc!=SQLITE_OK && rc!=SQLITE_CONSTRAINT ){
    if( rc==SQLITE_NOMEM ){
      sqlite3OomFault(pParse->db);
    }else if( !pVtab->zErrMsg ){
      sqlite3ErrorMsg(pParse, "%s", sqlite3ErrStr(rc));
    }else{

#ifndef SQLITE_OMIT_DESERIALIZE
    case SQLITE_CONFIG_MEMDB_MAXSIZE: {
      sqlite3GlobalConfig.mxMemdbSize = va_arg(ap, sqlite3_int64);
      break;
    }
#endif /* SQLITE_OMIT_DESERIALIZE */

    case SQLITE_CONFIG_ROWID_IN_VIEW: {
      int *pVal = va_arg(ap,int*);
#ifdef SQLITE_ALLOW_ROWID_IN_VIEW
      if( 0==*pVal ) sqlite3GlobalConfig.mNoVisibleRowid = TF_NoVisibleRowid;
      if( 1==*pVal ) sqlite3GlobalConfig.mNoVisibleRowid = 0;
      *pVal = (sqlite3GlobalConfig.mNoVisibleRowid==0);
#else
      *pVal = 0;
#endif
      break;
    }

    default: {
      rc = SQLITE_ERROR;
      break;
    }
  }
  va_end(ap);

typedef struct RbuUpdateStmt RbuUpdateStmt;

#if !defined(SQLITE_AMALGAMATION)
typedef unsigned int u32;
typedef unsigned short u16;
typedef unsigned char u8;
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;
#endif

/*
** These values must match the values defined in wal.c for the equivalent
** locks. These are not magic numbers as they are part of the SQLite file
** format.
*/

      if( pIter->bCleanup ){
        rbuObjIterFreeCols(pIter);
        pIter->bCleanup = 0;
        rc = sqlite3_step(pIter->pTblIter);
        if( rc!=SQLITE_ROW ){
          rc = resetAndCollectError(pIter->pTblIter, &p->zErrmsg);
          pIter->zTbl = 0;
          pIter->zDataTbl = 0;
        }else{
          pIter->zTbl = (const char*)sqlite3_column_text(pIter->pTblIter, 0);
          pIter->zDataTbl = (const char*)sqlite3_column_text(pIter->pTblIter,1);
          rc = (pIter->zDataTbl && pIter->zTbl) ? SQLITE_OK : SQLITE_NOMEM;
        }
      }else{
        if( pIter->zIdx==0 ){

static i64 rbuShmChecksum(sqlite3rbu *p){
  i64 iRet = 0;
  if( p->rc==SQLITE_OK ){
    sqlite3_file *pDb = p->pTargetFd->pReal;
    u32 volatile *ptr;
    p->rc = pDb->pMethods->xShmMap(pDb, 0, 32*1024, 0, (void volatile**)&ptr);
    if( p->rc==SQLITE_OK ){
      iRet = ((i64)ptr[10] << 32) + ptr[11];
      iRet = (i64)(((u64)ptr[10] << 32) + ptr[11]);
    }
  }
  return iRet;
}

/*
** This function is called as part of initializing or reinitializing an

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: 2024-03-18 18:03:17 76fb3a908f45230b956cb659c754e47603e80aa72a2aad50d479437a9c013f61", -1, SQLITE_TRANSIENT);
  sqlite3_result_text(pCtx, "fts5: 2024-03-26 11:14:52 a49296de0061931badaf3db6b965131a78b1c6c21b1eeb62815ea7adf767d0b3", -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){