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Overview
Comment:Merge all recent trunk changes.
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SHA1:3a2a1bd47875e114d8e6f31c1768908f401d2861
User & Date: drh 2013-11-27 21:53:51
Context
2013-12-02
21:58
Merge all recent 3.8.2 beta changes from trunk. check-in: 67c34ccf user: drh tags: sessions
2013-11-27
21:53
Merge all recent trunk changes. check-in: 3a2a1bd4 user: drh tags: sessions
21:07
Remove unnecessary local variables from sqlite3VdbeExec() in order to reduce stack-space requirements of that routine. check-in: 81891288 user: drh tags: trunk
2013-11-26
18:00
Merge in performance enhancements from trunk. check-in: fc9ae839 user: drh tags: sessions
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/os_win.c.

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** Make sure at least one set of Win32 APIs is available.
*/
#if !defined(SQLITE_WIN32_HAS_ANSI) && !defined(SQLITE_WIN32_HAS_WIDE)
#  error "At least one of SQLITE_WIN32_HAS_ANSI and SQLITE_WIN32_HAS_WIDE\
 must be defined."
#endif





























/*
** This constant should already be defined (in the "WinDef.h" SDK file).
*/
#ifndef MAX_PATH
#  define MAX_PATH                      (260)
#endif

................................................................................
  { "GetTickCount",            (SYSCALL)GetTickCount,            0 },
#else
  { "GetTickCount",            (SYSCALL)0,                       0 },
#endif

#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)

#if defined(SQLITE_WIN32_HAS_ANSI)

  { "GetVersionExA",           (SYSCALL)GetVersionExA,           0 },
#else
  { "GetVersionExA",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExA ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOA))aSyscall[34].pCurrent)

#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)

  { "GetVersionExW",           (SYSCALL)GetVersionExW,           0 },
#else
  { "GetVersionExW",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExW ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOW))aSyscall[35].pCurrent)
................................................................................
** Here is an interesting observation:  Win95, Win98, and WinME lack
** the LockFileEx() API.  But we can still statically link against that
** API as long as we don't call it when running Win95/98/ME.  A call to
** this routine is used to determine if the host is Win95/98/ME or
** WinNT/2K/XP so that we will know whether or not we can safely call
** the LockFileEx() API.
*/
#ifndef NTDDI_WIN8
#  define NTDDI_WIN8                        0x06020000
#endif



#if SQLITE_OS_WINCE || SQLITE_OS_WINRT || !defined(SQLITE_WIN32_HAS_ANSI)
# define osIsNT()  (1)
#elif !defined(SQLITE_WIN32_HAS_WIDE)
# define osIsNT()  (0)
#else
  static int osIsNT(void){
    if( sqlite3_os_type==0 ){
#if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WIN8







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** Make sure at least one set of Win32 APIs is available.
*/
#if !defined(SQLITE_WIN32_HAS_ANSI) && !defined(SQLITE_WIN32_HAS_WIDE)
#  error "At least one of SQLITE_WIN32_HAS_ANSI and SQLITE_WIN32_HAS_WIDE\
 must be defined."
#endif

/*
** Define the required Windows SDK version constants if they are not
** already available.
*/
#ifndef NTDDI_WIN8
#  define NTDDI_WIN8                        0x06020000
#endif

#ifndef NTDDI_WINBLUE
#  define NTDDI_WINBLUE                     0x06030000
#endif

/*
** Check if the GetVersionEx[AW] functions should be considered deprecated
** and avoid using them in that case.  It should be noted here that if the
** value of the SQLITE_WIN32_GETVERSIONEX pre-processor macro is zero
** (whether via this block or via being manually specified), that implies
** the underlying operating system will always be based on the Windows NT
** Kernel.
*/
#ifndef SQLITE_WIN32_GETVERSIONEX
#  if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINBLUE
#    define SQLITE_WIN32_GETVERSIONEX   0
#  else
#    define SQLITE_WIN32_GETVERSIONEX   1
#  endif
#endif

/*
** This constant should already be defined (in the "WinDef.h" SDK file).
*/
#ifndef MAX_PATH
#  define MAX_PATH                      (260)
#endif

................................................................................
  { "GetTickCount",            (SYSCALL)GetTickCount,            0 },
#else
  { "GetTickCount",            (SYSCALL)0,                       0 },
#endif

#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)

#if defined(SQLITE_WIN32_HAS_ANSI) && defined(SQLITE_WIN32_GETVERSIONEX) && \
        SQLITE_WIN32_GETVERSIONEX
  { "GetVersionExA",           (SYSCALL)GetVersionExA,           0 },
#else
  { "GetVersionExA",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExA ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOA))aSyscall[34].pCurrent)

#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
        defined(SQLITE_WIN32_GETVERSIONEX) && SQLITE_WIN32_GETVERSIONEX
  { "GetVersionExW",           (SYSCALL)GetVersionExW,           0 },
#else
  { "GetVersionExW",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExW ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOW))aSyscall[35].pCurrent)
................................................................................
** Here is an interesting observation:  Win95, Win98, and WinME lack
** the LockFileEx() API.  But we can still statically link against that
** API as long as we don't call it when running Win95/98/ME.  A call to
** this routine is used to determine if the host is Win95/98/ME or
** WinNT/2K/XP so that we will know whether or not we can safely call
** the LockFileEx() API.
*/




#if !defined(SQLITE_WIN32_GETVERSIONEX) || !SQLITE_WIN32_GETVERSIONEX
# define osIsNT()  (1)
#elif SQLITE_OS_WINCE || SQLITE_OS_WINRT || !defined(SQLITE_WIN32_HAS_ANSI)
# define osIsNT()  (1)
#elif !defined(SQLITE_WIN32_HAS_WIDE)
# define osIsNT()  (0)
#else
  static int osIsNT(void){
    if( sqlite3_os_type==0 ){
#if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WIN8

Changes to src/resolve.c.

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            if( iCol==pTab->iPKey ){
              iCol = -1;
            }
            break;
          }
        }
        if( iCol>=pTab->nCol && sqlite3IsRowid(zCol) && HasRowid(pTab) ){

          iCol = -1;        /* IMP: R-44911-55124 */

        }
        if( iCol<pTab->nCol ){
          cnt++;
          if( iCol<0 ){
            pExpr->affinity = SQLITE_AFF_INTEGER;
          }else if( pExpr->iTable==0 ){
            testcase( iCol==31 );







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            if( iCol==pTab->iPKey ){
              iCol = -1;
            }
            break;
          }
        }
        if( iCol>=pTab->nCol && sqlite3IsRowid(zCol) && HasRowid(pTab) ){
          /* IMP: R-24309-18625 */
          /* IMP: R-44911-55124 */
          iCol = -1;
        }
        if( iCol<pTab->nCol ){
          cnt++;
          if( iCol<0 ){
            pExpr->affinity = SQLITE_AFF_INTEGER;
          }else if( pExpr->iTable==0 ){
            testcase( iCol==31 );

Changes to src/shell.c.

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      ** explain mode. However, always executing it allows us an easy
      ** was to reset to explain mode in case the user previously
      ** did an .explain followed by a .width, .mode or .header
      ** command.
      */
      p->mode = MODE_Explain;
      p->showHeader = 1;
      memset(p->colWidth,0,ArraySize(p->colWidth));
      p->colWidth[0] = 4;                  /* addr */
      p->colWidth[1] = 13;                 /* opcode */
      p->colWidth[2] = 4;                  /* P1 */
      p->colWidth[3] = 4;                  /* P2 */
      p->colWidth[4] = 4;                  /* P3 */
      p->colWidth[5] = 13;                 /* P4 */
      p->colWidth[6] = 2;                  /* P5 */







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      ** explain mode. However, always executing it allows us an easy
      ** was to reset to explain mode in case the user previously
      ** did an .explain followed by a .width, .mode or .header
      ** command.
      */
      p->mode = MODE_Explain;
      p->showHeader = 1;
      memset(p->colWidth,0,sizeof(p->colWidth));
      p->colWidth[0] = 4;                  /* addr */
      p->colWidth[1] = 13;                 /* opcode */
      p->colWidth[2] = 4;                  /* P1 */
      p->colWidth[3] = 4;                  /* P2 */
      p->colWidth[4] = 4;                  /* P3 */
      p->colWidth[5] = 13;                 /* P4 */
      p->colWidth[6] = 2;                  /* P5 */

Changes to src/sqlite.h.in.

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**
** <blockquote>
** <table border="1">
** <tr><th> Internal<br>Type <th> Requested<br>Type <th>  Conversion
**
** <tr><td>  NULL    <td> INTEGER   <td> Result is 0
** <tr><td>  NULL    <td>  FLOAT    <td> Result is 0.0
** <tr><td>  NULL    <td>   TEXT    <td> Result is NULL pointer
** <tr><td>  NULL    <td>   BLOB    <td> Result is NULL pointer
** <tr><td> INTEGER  <td>  FLOAT    <td> Convert from integer to float
** <tr><td> INTEGER  <td>   TEXT    <td> ASCII rendering of the integer
** <tr><td> INTEGER  <td>   BLOB    <td> Same as INTEGER->TEXT
** <tr><td>  FLOAT   <td> INTEGER   <td> Convert from float to integer
** <tr><td>  FLOAT   <td>   TEXT    <td> ASCII rendering of the float
** <tr><td>  FLOAT   <td>   BLOB    <td> Same as FLOAT->TEXT
** <tr><td>  TEXT    <td> INTEGER   <td> Use atoi()
** <tr><td>  TEXT    <td>  FLOAT    <td> Use atof()
** <tr><td>  TEXT    <td>   BLOB    <td> No change
** <tr><td>  BLOB    <td> INTEGER   <td> Convert to TEXT then use atoi()
** <tr><td>  BLOB    <td>  FLOAT    <td> Convert to TEXT then use atof()
** <tr><td>  BLOB    <td>   TEXT    <td> Add a zero terminator if needed
** </table>
** </blockquote>)^
**
** The table above makes reference to standard C library functions atoi()
** and atof().  SQLite does not really use these functions.  It has its
** own equivalent internal routines.  The atoi() and atof() names are







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**
** <blockquote>
** <table border="1">
** <tr><th> Internal<br>Type <th> Requested<br>Type <th>  Conversion
**
** <tr><td>  NULL    <td> INTEGER   <td> Result is 0
** <tr><td>  NULL    <td>  FLOAT    <td> Result is 0.0
** <tr><td>  NULL    <td>   TEXT    <td> Result is a NULL pointer
** <tr><td>  NULL    <td>   BLOB    <td> Result is a NULL pointer
** <tr><td> INTEGER  <td>  FLOAT    <td> Convert from integer to float
** <tr><td> INTEGER  <td>   TEXT    <td> ASCII rendering of the integer
** <tr><td> INTEGER  <td>   BLOB    <td> Same as INTEGER->TEXT
** <tr><td>  FLOAT   <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  FLOAT   <td>   TEXT    <td> ASCII rendering of the float
** <tr><td>  FLOAT   <td>   BLOB    <td> [CAST] to BLOB
** <tr><td>  TEXT    <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  TEXT    <td>  FLOAT    <td> [CAST] to REAL
** <tr><td>  TEXT    <td>   BLOB    <td> No change
** <tr><td>  BLOB    <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  BLOB    <td>  FLOAT    <td> [CAST] to REAL
** <tr><td>  BLOB    <td>   TEXT    <td> Add a zero terminator if needed
** </table>
** </blockquote>)^
**
** The table above makes reference to standard C library functions atoi()
** and atof().  SQLite does not really use these functions.  It has its
** own equivalent internal routines.  The atoi() and atof() names are

Changes to src/vdbe.c.

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    if( (pIn3->flags & MEM_Int)==0 ){
      if( (pIn3->flags & MEM_Real)==0 ){
        /* If the P3 value cannot be converted into any kind of a number,
        ** then the seek is not possible, so jump to P2 */
        pc = pOp->p2 - 1;
        break;
      }
      /* If we reach this point, then the P3 value must be a floating
      ** point number. */
      assert( (pIn3->flags & MEM_Real)!=0 );

      if( (iKey==SMALLEST_INT64 && pIn3->r<(double)iKey)
       || (iKey==LARGEST_INT64 && pIn3->r>(double)iKey)
      ){
        /* The P3 value is too large in magnitude to be expressed as an
        ** integer. */
        res = 1;
        if( pIn3->r<0 ){
          if( oc>=OP_SeekGe ){  assert( oc==OP_SeekGe || oc==OP_SeekGt );
            rc = sqlite3BtreeFirst(pC->pCursor, &res);
            if( rc!=SQLITE_OK ) goto abort_due_to_error;
          }
        }else{
          if( oc<=OP_SeekLe ){  assert( oc==OP_SeekLt || oc==OP_SeekLe );
            rc = sqlite3BtreeLast(pC->pCursor, &res);
            if( rc!=SQLITE_OK ) goto abort_due_to_error;
          }
        }
        if( res ){
          pc = pOp->p2 - 1;
        }
        break;
      }else if( oc==OP_SeekLt || oc==OP_SeekGe ){
        /* Use the ceiling() function to convert real->int */
        if( pIn3->r > (double)iKey ) iKey++;
      }else{
        /* Use the floor() function to convert real->int */
        assert( oc==OP_SeekLe || oc==OP_SeekGt );
        if( pIn3->r < (double)iKey ) iKey--;
      }
    } 
    rc = sqlite3BtreeMovetoUnpacked(pC->pCursor, 0, (u64)iKey, 0, &res);
    if( rc!=SQLITE_OK ){
      goto abort_due_to_error;
    }
    if( res==0 ){
................................................................................
  }

#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
  /* Invoke the pre-update hook, if any */
  if( db->xPreUpdateCallback 
   && pOp->p4type==P4_TABLE
   && (!(pOp->p5 & OPFLAG_ISUPDATE) || pC->rowidIsValid==0)

  ){
    sqlite3VdbePreUpdateHook(p, pC, SQLITE_INSERT, zDb, pTab, iKey, pOp->p2);
  }
#endif

  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = lastRowid = iKey;
................................................................................
                          (pOp->p5 & OPFLAG_APPEND)!=0, seekResult
  );
  pC->rowidIsValid = 0;
  pC->deferredMoveto = 0;
  pC->cacheStatus = CACHE_STALE;

  /* Invoke the update-hook if required. */
  if( rc==SQLITE_OK && db->xUpdateCallback && op ){
    db->xUpdateCallback(db->pUpdateArg, op, zDb, pTab->zName, iKey);
  }
  break;
}

/* Opcode: Delete P1 P2 P3 P4 *
**
................................................................................
  i64 iKey;
  VdbeCursor *pC;
  const char *zDb;
  Table *pTab;
  int opflags;

  opflags = pOp->p2;
  iKey = 0;
  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  assert( pC->pCursor!=0 );  /* Only valid for real tables, no pseudotables */
  assert( pOp->p4type==P4_TABLE || pOp->p4type==P4_NOTUSED );

  /* The OP_Delete opcode always follows an OP_NotExists or OP_Last or
  ** OP_Column on the same table without any intervening operations that
  ** might move or invalidate the cursor.  Hence cursor pC is always pointing
  ** to the row to be deleted and the sqlite3VdbeCursorMoveto() operation
  ** below is always a no-op and cannot fail.  We will run it anyhow, though,
  ** to guard against future changes to the code generator.
................................................................................
  if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;

  /* If the update-hook or pre-update-hook will be invoked, set iKey to 
  ** the rowid of the row being deleted. Set zDb and zTab as well.
  */
  if( pOp->p4.z && HAS_UPDATE_HOOK(db) ){
    assert( pC->iDb>=0 );
    assert( pC->isTable );
    assert( pC->rowidIsValid );  /* lastRowid set by previous OP_NotFound */
    iKey = pC->lastRowid;
    zDb = db->aDb[pC->iDb].zName;
    pTab = pOp->p4.pTab;
  }

#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
  /* Invoke the pre-update-hook if required. */
  if( db->xPreUpdateCallback && pOp->p4.z ){
    assert( !(opflags & OPFLAG_ISUPDATE) || (aMem[pOp->p3].flags & MEM_Int) );
    sqlite3VdbePreUpdateHook(p, pC,
        (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE, 
        zDb, pTab, iKey,
        pOp->p3
    );
  }
................................................................................
  rc = sqlite3BtreeDelete(pC->pCursor);
  pC->cacheStatus = CACHE_STALE;

  /* Update the change-counter and invoke the update-hook if required. */
  if( opflags & OPFLAG_NCHANGE ){
    p->nChange++;
    assert( pOp->p4.z );
    if( rc==SQLITE_OK && db->xUpdateCallback ){
      db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, pTab->zName,iKey);
    }
  }
  break;
}
/* Opcode: ResetCount * * * * *
**







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4204
    if( (pIn3->flags & MEM_Int)==0 ){
      if( (pIn3->flags & MEM_Real)==0 ){
        /* If the P3 value cannot be converted into any kind of a number,
        ** then the seek is not possible, so jump to P2 */
        pc = pOp->p2 - 1;
        break;
      }

      /* 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( pIn3->r<(double)iKey ){
        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( pIn3->r>(double)iKey ){
        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 = sqlite3BtreeMovetoUnpacked(pC->pCursor, 0, (u64)iKey, 0, &res);
    if( rc!=SQLITE_OK ){
      goto abort_due_to_error;
    }
    if( res==0 ){
................................................................................
  }

#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
  /* Invoke the pre-update hook, if any */
  if( db->xPreUpdateCallback 
   && pOp->p4type==P4_TABLE
   && (!(pOp->p5 & OPFLAG_ISUPDATE) || pC->rowidIsValid==0)
   && HasRowid(pTab)
  ){
    sqlite3VdbePreUpdateHook(p, pC, SQLITE_INSERT, zDb, pTab, iKey, pOp->p2);
  }
#endif

  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
  if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = lastRowid = iKey;
................................................................................
                          (pOp->p5 & OPFLAG_APPEND)!=0, seekResult
  );
  pC->rowidIsValid = 0;
  pC->deferredMoveto = 0;
  pC->cacheStatus = CACHE_STALE;

  /* Invoke the update-hook if required. */
  if( rc==SQLITE_OK && db->xUpdateCallback && op && HasRowid(pTab) ){
    db->xUpdateCallback(db->pUpdateArg, op, zDb, pTab->zName, iKey);
  }
  break;
}

/* Opcode: Delete P1 P2 P3 P4 *
**
................................................................................
  i64 iKey;
  VdbeCursor *pC;
  const char *zDb;
  Table *pTab;
  int opflags;

  opflags = pOp->p2;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  pC = p->apCsr[pOp->p1];
  assert( pC!=0 );
  assert( pC->pCursor!=0 );  /* Only valid for real tables, no pseudotables */
  iKey = pC->lastRowid;      /* Only used for the update hook */

  /* The OP_Delete opcode always follows an OP_NotExists or OP_Last or
  ** OP_Column on the same table without any intervening operations that
  ** might move or invalidate the cursor.  Hence cursor pC is always pointing
  ** to the row to be deleted and the sqlite3VdbeCursorMoveto() operation
  ** below is always a no-op and cannot fail.  We will run it anyhow, though,
  ** to guard against future changes to the code generator.
................................................................................
  if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error;

  /* If the update-hook or pre-update-hook will be invoked, set iKey to 
  ** the rowid of the row being deleted. Set zDb and zTab as well.
  */
  if( pOp->p4.z && HAS_UPDATE_HOOK(db) ){
    assert( pC->iDb>=0 );

    assert( pC->rowidIsValid || !HasRowid(pOp->p4.pTab) );
    iKey = pC->lastRowid;
    zDb = db->aDb[pC->iDb].zName;
    pTab = pOp->p4.pTab;
 }

#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
  /* Invoke the pre-update-hook if required. */
  if( db->xPreUpdateCallback && pOp->p4.z && HasRowid(pTab) ){
    assert( !(opflags & OPFLAG_ISUPDATE) || (aMem[pOp->p3].flags & MEM_Int) );
    sqlite3VdbePreUpdateHook(p, pC,
        (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE, 
        zDb, pTab, iKey,
        pOp->p3
    );
  }
................................................................................
  rc = sqlite3BtreeDelete(pC->pCursor);
  pC->cacheStatus = CACHE_STALE;

  /* Update the change-counter and invoke the update-hook if required. */
  if( opflags & OPFLAG_NCHANGE ){
    p->nChange++;
    assert( pOp->p4.z );
    if( rc==SQLITE_OK && db->xUpdateCallback && HasRowid(pTab) ){
      db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, pTab->zName,iKey);
    }
  }
  break;
}
/* Opcode: ResetCount * * * * *
**

Changes to src/vdbeapi.c.

724
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735
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747
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757
758
  Mem *pOut;

  pVm = (Vdbe *)pStmt;
  if( pVm && pVm->pResultSet!=0 && i<pVm->nResColumn && i>=0 ){
    sqlite3_mutex_enter(pVm->db->mutex);
    pOut = &pVm->pResultSet[i];
  }else{
    /* If the value passed as the second argument is out of range, return
    ** a pointer to the following static Mem object which contains the
    ** value SQL NULL. Even though the Mem structure contains an element
    ** of type i64, on certain architectures (x86) with certain compiler
    ** switches (-Os), gcc may align this Mem object on a 4-byte boundary
    ** instead of an 8-byte one. This all works fine, except that when
    ** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s
    ** that a Mem structure is located on an 8-byte boundary. To prevent
    ** these assert()s from failing, when building with SQLITE_DEBUG defined
    ** using gcc, we force nullMem to be 8-byte aligned using the magical
    ** __attribute__((aligned(8))) macro.  */
    static const Mem nullMem 
#if defined(SQLITE_DEBUG) && defined(__GNUC__)
      __attribute__((aligned(8))) 
#endif
      = {0, "", (double)0, {0}, 0, MEM_Null, SQLITE_NULL, 0,
#ifdef SQLITE_DEBUG
         0, 0,  /* pScopyFrom, pFiller */
#endif
         0, 0 };

    if( pVm && ALWAYS(pVm->db) ){
      sqlite3_mutex_enter(pVm->db->mutex);
      sqlite3Error(pVm->db, SQLITE_RANGE, 0);
    }
    pOut = (Mem*)columnNullValue();
  }
  return pOut;







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







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731
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  Mem *pOut;

  pVm = (Vdbe *)pStmt;
  if( pVm && pVm->pResultSet!=0 && i<pVm->nResColumn && i>=0 ){
    sqlite3_mutex_enter(pVm->db->mutex);
    pOut = &pVm->pResultSet[i];
  }else{





















    if( pVm && ALWAYS(pVm->db) ){
      sqlite3_mutex_enter(pVm->db->mutex);
      sqlite3Error(pVm->db, SQLITE_RANGE, 0);
    }
    pOut = (Mem*)columnNullValue();
  }
  return pOut;

Changes to src/where.c.

3917
3918
3919
3920
3921
3922
3923
3924


3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
  saved_prereq = pNew->prereq;
  saved_nOut = pNew->nOut;
  pNew->rSetup = 0;
  rLogSize = estLog(sqlite3LogEst(pProbe->aiRowEst[0]));

  /* Consider using a skip-scan if there are no WHERE clause constraints
  ** available for the left-most terms of the index, and if the average
  ** number of repeats in the left-most terms is at least 50.


  */
  if( pTerm==0
   && saved_nEq==saved_nSkip
   && saved_nEq+1<pProbe->nKeyCol
   && pProbe->aiRowEst[saved_nEq+1]>50  /* TUNING: Minimum for skip-scan */
  ){
    LogEst nIter;
    pNew->u.btree.nEq++;
    pNew->u.btree.nSkip++;
    pNew->aLTerm[pNew->nLTerm++] = 0;
    pNew->wsFlags |= WHERE_SKIPSCAN;
    nIter = sqlite3LogEst(pProbe->aiRowEst[0]/pProbe->aiRowEst[saved_nEq+1]);







|
>
>




|







3917
3918
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3938
  saved_prereq = pNew->prereq;
  saved_nOut = pNew->nOut;
  pNew->rSetup = 0;
  rLogSize = estLog(sqlite3LogEst(pProbe->aiRowEst[0]));

  /* Consider using a skip-scan if there are no WHERE clause constraints
  ** available for the left-most terms of the index, and if the average
  ** number of repeats in the left-most terms is at least 18.  The magic
  ** number 18 was found by experimentation to be the payoff point where
  ** skip-scan become faster than a full-scan.
  */
  if( pTerm==0
   && saved_nEq==saved_nSkip
   && saved_nEq+1<pProbe->nKeyCol
   && pProbe->aiRowEst[saved_nEq+1]>=18  /* TUNING: Minimum for skip-scan */
  ){
    LogEst nIter;
    pNew->u.btree.nEq++;
    pNew->u.btree.nSkip++;
    pNew->aLTerm[pNew->nLTerm++] = 0;
    pNew->wsFlags |= WHERE_SKIPSCAN;
    nIter = sqlite3LogEst(pProbe->aiRowEst[0]/pProbe->aiRowEst[saved_nEq+1]);

Changes to test/e_createtable.test.

1099
1100
1101
1102
1103
1104
1105
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1107
1108
1109
1110
1111
1112
1113
....
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1657
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....
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# Tests for statements regarding constraints (PRIMARY KEY, UNIQUE, NOT 
# NULL and CHECK constraints).
#

# EVIDENCE-OF: R-52382-54248 Each table in SQLite may have at most one
# PRIMARY KEY.
# 
# EVIDENCE-OF: R-62315-57691 An error is rasied if more than one PRIMARY
# KEY clause appears in a CREATE TABLE statement.
#
#     To test the two above, show that zero primary keys is Ok, one primary
#     key is Ok, and two or more primary keys is an error.
#
drop_all_tables
do_createtable_tests 4.1.1 {
................................................................................
# Tests for INTEGER PRIMARY KEY and rowid related statements.
#

# EVIDENCE-OF: R-52584-04009 The rowid value can be accessed using one
# of the special case-independent names "rowid", "oid", or "_rowid_" in
# place of a column name.
#




drop_all_tables
do_execsql_test 5.1.0 {
  CREATE TABLE t1(x, y);
  INSERT INTO t1 VALUES('one', 'first');
  INSERT INTO t1 VALUES('two', 'second');
  INSERT INTO t1 VALUES('three', 'third');
}
................................................................................
  9   "SELECT _RoWiD_ FROM t1"      {1 2 3}
}

# EVIDENCE-OF: R-26501-17306 If a table contains a user defined column
# named "rowid", "oid" or "_rowid_", then that name always refers the
# explicitly declared column and cannot be used to retrieve the integer
# rowid value.




#
do_execsql_test 5.2.0 {
  CREATE TABLE t2(oid, b);
  CREATE TABLE t3(a, _rowid_);
  CREATE TABLE t4(a, b, rowid);

  INSERT INTO t2 VALUES('one', 'two');







|







 







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>







 







>
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>







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# Tests for statements regarding constraints (PRIMARY KEY, UNIQUE, NOT 
# NULL and CHECK constraints).
#

# EVIDENCE-OF: R-52382-54248 Each table in SQLite may have at most one
# PRIMARY KEY.
# 
# EVIDENCE-OF: R-31826-01813 An error is raised if more than one PRIMARY
# KEY clause appears in a CREATE TABLE statement.
#
#     To test the two above, show that zero primary keys is Ok, one primary
#     key is Ok, and two or more primary keys is an error.
#
drop_all_tables
do_createtable_tests 4.1.1 {
................................................................................
# Tests for INTEGER PRIMARY KEY and rowid related statements.
#

# EVIDENCE-OF: R-52584-04009 The rowid value can be accessed using one
# of the special case-independent names "rowid", "oid", or "_rowid_" in
# place of a column name.
#
# EVIDENCE-OF: R-06726-07466 A column name can be any of the names
# defined in the CREATE TABLE statement or one of the following special
# identifiers: "ROWID", "OID", or "_ROWID_".
#
drop_all_tables
do_execsql_test 5.1.0 {
  CREATE TABLE t1(x, y);
  INSERT INTO t1 VALUES('one', 'first');
  INSERT INTO t1 VALUES('two', 'second');
  INSERT INTO t1 VALUES('three', 'third');
}
................................................................................
  9   "SELECT _RoWiD_ FROM t1"      {1 2 3}
}

# EVIDENCE-OF: R-26501-17306 If a table contains a user defined column
# named "rowid", "oid" or "_rowid_", then that name always refers the
# explicitly declared column and cannot be used to retrieve the integer
# rowid value.
#
# EVIDENCE-OF: R-44615-33286 The special identifiers only refer to the
# row key if the CREATE TABLE statement does not define a real column
# with the same name.
#
do_execsql_test 5.2.0 {
  CREATE TABLE t2(oid, b);
  CREATE TABLE t3(a, _rowid_);
  CREATE TABLE t4(a, b, rowid);

  INSERT INTO t2 VALUES('one', 'two');

Changes to test/e_expr.test.

1403
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1413
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1850




































1851
} {R1 R2 R3}
do_test e_expr-26.1.6 { set ::evalcount } {5}


#-------------------------------------------------------------------------
# Test statements related to CAST expressions.
#
# EVIDENCE-OF: R-65079-31758 Application of a CAST expression is
# different to application of a column affinity, as with a CAST
# expression the storage class conversion is forced even if it is lossy


# and irrreversible.
#
do_execsql_test e_expr-27.1.1 {
  CREATE TABLE t3(a TEXT, b REAL, c INTEGER);
  INSERT INTO t3 VALUES(X'555655', '1.23abc', 4.5);
  SELECT typeof(a), a, typeof(b), b, typeof(c), c FROM t3;
} {blob UVU text 1.23abc real 4.5}
do_execsql_test e_expr-27.1.2 {
................................................................................
# EVIDENCE-OF: R-43164-44276 If there is no prefix that can be
# interpreted as an integer number, the result of the conversion is 0.
#
do_expr_test e_expr-30.4.1 { CAST('' AS INTEGER) } integer 0
do_expr_test e_expr-30.4.2 { CAST('not a number' AS INTEGER) } integer 0
do_expr_test e_expr-30.4.3 { CAST('XXI' AS INTEGER) } integer 0

# EVIDENCE-OF: R-00741-38776 A cast of a REAL value into an INTEGER will
# truncate the fractional part of the REAL.

#
do_expr_test e_expr-31.1.1 { CAST(3.14159 AS INTEGER) } integer 3
do_expr_test e_expr-31.1.2 { CAST(1.99999 AS INTEGER) } integer 1
do_expr_test e_expr-31.1.3 { CAST(-1.99999 AS INTEGER) } integer -1
do_expr_test e_expr-31.1.4 { CAST(-0.99999 AS INTEGER) } integer 0

# EVIDENCE-OF: R-49503-28105 If a REAL is too large to be represented as
# an INTEGER then the result of the cast is the largest negative

# integer: -9223372036854775808.

#
do_expr_test e_expr-31.2.1 { CAST(2e+50 AS INT) } integer 9223372036854775807
do_expr_test e_expr-31.2.2 { CAST(-2e+50 AS INT) } integer -9223372036854775808
do_expr_test e_expr-31.2.3 { 
  CAST(-9223372036854775809.0 AS INT)
} integer -9223372036854775808
do_expr_test e_expr-31.2.4 { 
................................................................................
#
foreach {tn expr} {
    1  { ( SELECT x FROM t4 WHERE x>3 ORDER BY x )      }
    2  { ( SELECT x FROM t4 WHERE y<'one' ORDER BY y )  }
} {
  do_expr_test e_expr-36.4.$tn $expr null {}
}








































finish_test







|
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>
|







 







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|
>






|
|
>
|
>







 








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

1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
....
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
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1615
1616
1617
1618
1619
....
1847
1848
1849
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1852
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1854
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1856
1857
1858
1859
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1861
1862
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1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
} {R1 R2 R3}
do_test e_expr-26.1.6 { set ::evalcount } {5}


#-------------------------------------------------------------------------
# Test statements related to CAST expressions.
#
# EVIDENCE-OF: R-20854-17109 A CAST conversion is similar to the
# conversion that takes place when a column affinity is applied to a
# value except that with the CAST operator the conversion always takes
# place even if the conversion lossy and irreversible, whereas column
# affinity only changes the data type of a value if the change is
# lossless and reversible.
#
do_execsql_test e_expr-27.1.1 {
  CREATE TABLE t3(a TEXT, b REAL, c INTEGER);
  INSERT INTO t3 VALUES(X'555655', '1.23abc', 4.5);
  SELECT typeof(a), a, typeof(b), b, typeof(c), c FROM t3;
} {blob UVU text 1.23abc real 4.5}
do_execsql_test e_expr-27.1.2 {
................................................................................
# EVIDENCE-OF: R-43164-44276 If there is no prefix that can be
# interpreted as an integer number, the result of the conversion is 0.
#
do_expr_test e_expr-30.4.1 { CAST('' AS INTEGER) } integer 0
do_expr_test e_expr-30.4.2 { CAST('not a number' AS INTEGER) } integer 0
do_expr_test e_expr-30.4.3 { CAST('XXI' AS INTEGER) } integer 0

# EVIDENCE-OF: R-02752-50091 A cast of a REAL value into an INTEGER
# results in the integer between the REAL value and zero that is closest
# to the REAL value.
#
do_expr_test e_expr-31.1.1 { CAST(3.14159 AS INTEGER) } integer 3
do_expr_test e_expr-31.1.2 { CAST(1.99999 AS INTEGER) } integer 1
do_expr_test e_expr-31.1.3 { CAST(-1.99999 AS INTEGER) } integer -1
do_expr_test e_expr-31.1.4 { CAST(-0.99999 AS INTEGER) } integer 0

# EVIDENCE-OF: R-51517-40824 If a REAL is greater than the greatest
# possible signed integer (+9223372036854775807) then the result is the
# greatest possible signed integer and if the REAL is less than the
# least possible signed integer (-9223372036854775808) then the result
# is the least possible signed integer.
#
do_expr_test e_expr-31.2.1 { CAST(2e+50 AS INT) } integer 9223372036854775807
do_expr_test e_expr-31.2.2 { CAST(-2e+50 AS INT) } integer -9223372036854775808
do_expr_test e_expr-31.2.3 { 
  CAST(-9223372036854775809.0 AS INT)
} integer -9223372036854775808
do_expr_test e_expr-31.2.4 { 
................................................................................
#
foreach {tn expr} {
    1  { ( SELECT x FROM t4 WHERE x>3 ORDER BY x )      }
    2  { ( SELECT x FROM t4 WHERE y<'one' ORDER BY y )  }
} {
  do_expr_test e_expr-36.4.$tn $expr null {}
}

# EVIDENCE-OF: R-62477-06476 For example, the values NULL, 0.0, 0,
# 'english' and '0' are all considered to be false.
#
do_execsql_test e_expr-37.1 {
   SELECT CASE WHEN NULL THEN 'true' ELSE 'false' END;
} {false}
do_execsql_test e_expr-37.2 {
   SELECT CASE WHEN 0.0 THEN 'true' ELSE 'false' END;
} {false}
do_execsql_test e_expr-37.3 {
   SELECT CASE WHEN 0 THEN 'true' ELSE 'false' END;
} {false}
do_execsql_test e_expr-37.4 {
   SELECT CASE WHEN 'engligh' THEN 'true' ELSE 'false' END;
} {false}
do_execsql_test e_expr-37.5 {
   SELECT CASE WHEN '0' THEN 'true' ELSE 'false' END;
} {false}

# EVIDENCE-OF: R-55532-10108 Values 1, 1.0, 0.1, -0.1 and '1english' are
# considered to be true.
#
do_execsql_test e_expr-37.6 {
   SELECT CASE WHEN 1 THEN 'true' ELSE 'false' END;
} {true}
do_execsql_test e_expr-37.7 {
   SELECT CASE WHEN 1.0 THEN 'true' ELSE 'false' END;
} {true}
do_execsql_test e_expr-37.8 {
   SELECT CASE WHEN 0.1 THEN 'true' ELSE 'false' END;
} {true}
do_execsql_test e_expr-37.9 {
   SELECT CASE WHEN -0.1 THEN 'true' ELSE 'false' END;
} {true}
do_execsql_test e_expr-37.10 {
   SELECT CASE WHEN '1english' THEN 'true' ELSE 'false' END;
} {true}


finish_test

Changes to test/hook.test.

124
125
126
127
128
129
130




131
132
133
134
135
136








137
138






139
140
141

142
143
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# 4.2.* - Check that the update-hook is invoked for rows modified by trigger
#         bodies. Also that the database name is correctly reported when 
#         an attached database is modified.
# 4.3.* - Do some sorting, grouping, compound queries, population and 
#         depopulation of indices, to make sure the update-hook is not 
#         invoked incorrectly.
#





# Simple tests
do_test hook-4.1.1 {
  catchsql {
    DROP TABLE t1;
  }








  execsql {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);






    INSERT INTO t1 VALUES(1, 'one');
    INSERT INTO t1 VALUES(2, 'two');
    INSERT INTO t1 VALUES(3, 'three');

  }
  db update_hook [list lappend ::update_hook]
} {}












do_test hook-4.1.2 {

  execsql {
    INSERT INTO t1 VALUES(4, 'four');
    DELETE FROM t1 WHERE b = 'two';
    UPDATE t1 SET b = '' WHERE a = 1 OR a = 3;
    DELETE FROM t1 WHERE 1; -- Avoid the truncate optimization (for now)
  }
  set ::update_hook
................................................................................
    DELETE main t1 2 \
    UPDATE main t1 1 \
    UPDATE main t1 3 \
    DELETE main t1 1 \
    DELETE main t1 3 \
    DELETE main t1 4 \
]



















ifcapable trigger {
  # Update hook is not invoked for changes to sqlite_master
  #
  do_test hook-4.1.3 {
    set ::update_hook {}
    execsql {







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# 4.2.* - Check that the update-hook is invoked for rows modified by trigger
#         bodies. Also that the database name is correctly reported when 
#         an attached database is modified.
# 4.3.* - Do some sorting, grouping, compound queries, population and 
#         depopulation of indices, to make sure the update-hook is not 
#         invoked incorrectly.
#
# EVIDENCE-OF: R-21999-45122 The sqlite3_update_hook() interface
# registers a callback function with the database connection identified
# by the first argument to be invoked whenever a row is updated,
# inserted or deleted in a rowid table.

# Simple tests
do_test hook-4.1.1a {
  catchsql {
    DROP TABLE t1;
  }
  unset -nocomplain ::update_hook
  set ::update_hook {}
  db update_hook [list lappend ::update_hook]
  #
  # EVIDENCE-OF: R-52223-27275 The update hook is not invoked when
  # internal system tables are modified (i.e. sqlite_master and
  # sqlite_sequence).
  #
  execsql {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
    CREATE TABLE t1w(a INT PRIMARY KEY, b) WITHOUT ROWID;
  }
  set ::update_hook
} {}
do_test hook-4.1.1b {
  execsql {
    INSERT INTO t1 VALUES(1, 'one');
    INSERT INTO t1 VALUES(2, 'two');
    INSERT INTO t1 VALUES(3, 'three');
    INSERT INTO t1w SELECT * FROM t1;
  }

} {}

# EVIDENCE-OF: R-15506-57666 The second callback argument is one of
# SQLITE_INSERT, SQLITE_DELETE, or SQLITE_UPDATE, depending on the
# operation that caused the callback to be invoked.
#
# EVIDENCE-OF: R-29213-61195 The third and fourth arguments to the
# callback contain pointers to the database and table name containing
# the affected row.
#
# EVIDENCE-OF: R-30809-57812 The final callback parameter is the rowid
# of the row.
#
do_test hook-4.1.2 {
  set ::update_hook {}
  execsql {
    INSERT INTO t1 VALUES(4, 'four');
    DELETE FROM t1 WHERE b = 'two';
    UPDATE t1 SET b = '' WHERE a = 1 OR a = 3;
    DELETE FROM t1 WHERE 1; -- Avoid the truncate optimization (for now)
  }
  set ::update_hook
................................................................................
    DELETE main t1 2 \
    UPDATE main t1 1 \
    UPDATE main t1 3 \
    DELETE main t1 1 \
    DELETE main t1 3 \
    DELETE main t1 4 \
]

# EVIDENCE-OF: R-61808-14344 The sqlite3_update_hook() interface does
# not fire callbacks for changes to a WITHOUT ROWID table.
#
# EVIDENCE-OF: R-33257-44249 The update hook is not invoked when WITHOUT
# ROWID tables are modified.
#
breakpoint
do_test hook-4.1.2w {
  set ::update_hook {}
  execsql {
    INSERT INTO t1w VALUES(4, 'four');
    DELETE FROM t1w WHERE b = 'two';
    UPDATE t1w SET b = '' WHERE a = 1 OR a = 3;
    DELETE FROM t1w WHERE 1; -- Avoid the truncate optimization (for now)
  }
  set ::update_hook
} {}

ifcapable trigger {
  # Update hook is not invoked for changes to sqlite_master
  #
  do_test hook-4.1.3 {
    set ::update_hook {}
    execsql {

Changes to test/lastinsert.test.

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        create table t1 (k integer primary key);
        insert into t1 values (1);
        insert into t1 values (NULL);
        insert into t1 values (NULL);
        select last_insert_rowid();
    }
} {0 3}












# LIRID unchanged after an update on a table
do_test lastinsert-1.2 {
    catchsql {
        update t1 set k=4 where k=2;
        select last_insert_rowid();
    }







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        create table t1 (k integer primary key);
        insert into t1 values (1);
        insert into t1 values (NULL);
        insert into t1 values (NULL);
        select last_insert_rowid();
    }
} {0 3}

# EVIDENCE-OF: R-47220-63683 The sqlite3_last_insert_rowid() function
# does not work for WITHOUT ROWID tables.
#
do_test lastinsert-1.1w {
    catchsql {
        create table t1w (k integer primary key) WITHOUT ROWID;
        insert into t1w values (123456);
        select last_insert_rowid(); -- returns 3 from above.
    }
} {0 3}

# LIRID unchanged after an update on a table
do_test lastinsert-1.2 {
    catchsql {
        update t1 set k=4 where k=2;
        select last_insert_rowid();
    }

Changes to test/rowid.test.

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#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the magic ROWID column that is
# found on all tables.
#
# $Id: rowid.test,v 1.21 2009/06/26 15:14:55 drh Exp $



set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Basic ROWID functionality tests.
#
do_test rowid-1.1 {







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#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the magic ROWID column that is
# found on all tables.
#
# EVIDENCE-OF: R-36924-43758 By default, every row in SQLite has a
# special column, usually called the "rowid", that uniquely identifies
# that row within the table.

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Basic ROWID functionality tests.
#
do_test rowid-1.1 {

Added test/skipscan2.test.





























































































































































































































































































































































































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# 2013-11-27
#
# 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 tests of the "skip-scan" query strategy.
#
# The test cases in this file are derived from the description of
# the skip-scan query strategy in the "optoverview.html" document.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_execsql_test skipscan2-1.1 {
  CREATE TABLE people(
    name TEXT PRIMARY KEY,
    role TEXT NOT NULL,
    height INT NOT NULL, -- in cm
    CHECK( role IN ('student','teacher') )
  );
  CREATE INDEX people_idx1 ON people(role, height);
} {}
do_execsql_test skipscan2-1.2 {
  INSERT INTO people VALUES('Alice','student',156);
  INSERT INTO people VALUES('Bob','student',161);
  INSERT INTO people VALUES('Cindy','student',155);
  INSERT INTO people VALUES('David','student',181);
  INSERT INTO people VALUES('Emily','teacher',158);
  INSERT INTO people VALUES('Fred','student',163);
  INSERT INTO people VALUES('Ginny','student',169);
  INSERT INTO people VALUES('Harold','student',172);
  INSERT INTO people VALUES('Imma','student',179);
  INSERT INTO people VALUES('Jack','student',181);
  INSERT INTO people VALUES('Karen','student',163);
  INSERT INTO people VALUES('Logan','student',177);
  INSERT INTO people VALUES('Megan','teacher',159);
  INSERT INTO people VALUES('Nathan','student',163);
  INSERT INTO people VALUES('Olivia','student',161);
  INSERT INTO people VALUES('Patrick','teacher',180);
  INSERT INTO people VALUES('Quiana','student',182);
  INSERT INTO people VALUES('Robert','student',159);
  INSERT INTO people VALUES('Sally','student',166);
  INSERT INTO people VALUES('Tom','student',171);
  INSERT INTO people VALUES('Ursula','student',170);
  INSERT INTO people VALUES('Vance','student',179);
  INSERT INTO people VALUES('Willma','student',175);
  INSERT INTO people VALUES('Xavier','teacher',185);
  INSERT INTO people VALUES('Yvonne','student',149);
  INSERT INTO people VALUES('Zach','student',170);
}

# Without ANALYZE, a skip-scan is not used
#
do_execsql_test skipscan2-1.3 {
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.3eqp {
  EXPLAIN QUERY PLAN
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {~/*INDEX people_idx1 */}

# Now do an ANALYZE.  A skip-scan can be used after ANALYZE.
#
do_execsql_test skipscan2-1.4 {
  ANALYZE;
  -- We do not have enough people above to actually force the use
  -- of a skip-scan.  So make a manual adjustment to the stat1 table
  -- to make it seem like there are many more.
  UPDATE sqlite_stat1 SET stat='10000 5000 20' WHERE idx='people_idx1';
  ANALYZE sqlite_master;
}
db cache flush
do_execsql_test skipscan2-1.5 {
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.5eqp {
  EXPLAIN QUERY PLAN
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {/*INDEX people_idx1 */}

# Same answer with other formulations of the same query
#
do_execsql_test skipscan2-1.6 {
  SELECT name FROM people
   WHERE role IN (SELECT DISTINCT role FROM people)
     AND height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.7 {
  SELECT name FROM people WHERE role='teacher' AND height>=180
  UNION ALL
  SELECT name FROM people WHERE role='student' AND height>=180
  ORDER BY 1;
} {David Jack Patrick Quiana Xavier}

# Add 8 more people, bringing the total to 34.  Then the number of
# duplicates in the left-column of the index will be 17 and 
# skip-scan should not be used after an (unfudged) ANALYZE.
#
do_execsql_test skipscan2-1.8 {
  INSERT INTO people VALUES('Angie','student',166);
  INSERT INTO people VALUES('Brad','student',176);
  INSERT INTO people VALUES('Claire','student',168);
  INSERT INTO people VALUES('Donald','student',162);
  INSERT INTO people VALUES('Elaine','student',177);
  INSERT INTO people VALUES('Frazier','student',159);
  INSERT INTO people VALUES('Grace','student',179);
  INSERT INTO people VALUES('Horace','student',166);
  ANALYZE;
  SELECT stat FROM sqlite_stat1 WHERE idx='people_idx1';
} {{34 17 2}}
db cache flush
do_execsql_test skipscan2-1.9 {
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.9eqp {
  EXPLAIN QUERY PLAN
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {~/*INDEX people_idx1 */}

# Add 2 more people, bringing the total to 36.  Then the number of
# duplicates in the left-column of the index will be 18 and 
# skip-scan will be used after an (unfudged) ANALYZE.
#
do_execsql_test skipscan2-1.10 {
  INSERT INTO people VALUES('Ingrad','student',155);
  INSERT INTO people VALUES('Jacob','student',179);
  ANALYZE;
  SELECT stat FROM sqlite_stat1 WHERE idx='people_idx1';
} {{36 18 2}}
db cache flush
do_execsql_test skipscan2-1.11 {
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.11eqp {
  EXPLAIN QUERY PLAN
  SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {/*INDEX people_idx1 */}


# Repeat using a WITHOUT ROWID table.
#
do_execsql_test skipscan2-2.1 {
  CREATE TABLE peoplew(
    name TEXT PRIMARY KEY,
    role TEXT NOT NULL,
    height INT NOT NULL, -- in cm
    CHECK( role IN ('student','teacher') )
  ) WITHOUT ROWID;
  CREATE INDEX peoplew_idx1 ON peoplew(role, height);
  INSERT INTO peoplew(name,role,height)
     SELECT name, role, height FROM  people;
  ALTER TABLE people RENAME TO old_people;
  SELECT name FROM peoplew WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-2.2 {
  SELECT name FROM peoplew
   WHERE role IN (SELECT DISTINCT role FROM peoplew)
     AND height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-2.2 {
  SELECT name FROM peoplew WHERE role='teacher' AND height>=180
  UNION ALL
  SELECT name FROM peoplew WHERE role='student' AND height>=180
  ORDER BY 1;
} {David Jack Patrick Quiana Xavier}

# Now do an ANALYZE.  A skip-scan can be used after ANALYZE.
#
do_execsql_test skipscan2-2.4 {
  ANALYZE;
}
db cache flush
do_execsql_test skipscan2-2.5 {
  SELECT name FROM peoplew WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-2.5eqp {
  EXPLAIN QUERY PLAN
  SELECT name FROM peoplew WHERE height>=180 ORDER BY +name;
} {/*INDEX peoplew_idx1 */}



finish_test

Changes to test/speedtest1.c.

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  }
  for(i=0; i<sizeof(aMult)/sizeof(aMult[0]); i++){
    if( sqlite3_stricmp(aMult[i].zSuffix, zArg)==0 ){
      v *= aMult[i].iMult;
      break;
    }
  }
  if( v>=2147483648 ) fatal_error("parameter to large - max 2147483648");
  return isNeg? -v : v;
}

/* Return the current wall-clock time, in milliseconds */
sqlite3_int64 speedtest1_timestamp(void){
  static sqlite3_vfs *clockVfs = 0;
  sqlite3_int64 t;
  if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0);
................................................................................
  }else{
    printf("%4d - %s%.*s ", iTestNum, zName, NAMEWIDTH-n, zDots);
    fflush(stdout);
  }
  sqlite3_free(zName);
  g.nResult = 0;
  g.iStart = speedtest1_timestamp();
  g.x = 2903710987;
  g.y = 1157229256;
}

/* Complete a test case */
void speedtest1_end_test(void){
  sqlite3_int64 iElapseTime = speedtest1_timestamp() - g.iStart;
  if( !g.bSqlOnly ){
    g.iTotal += iElapseTime;







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  }
  for(i=0; i<sizeof(aMult)/sizeof(aMult[0]); i++){
    if( sqlite3_stricmp(aMult[i].zSuffix, zArg)==0 ){
      v *= aMult[i].iMult;
      break;
    }
  }
  if( v>0x7fffffff ) fatal_error("parameter too large - max 2147483648");
  return (int)(isNeg? -v : v);
}

/* Return the current wall-clock time, in milliseconds */
sqlite3_int64 speedtest1_timestamp(void){
  static sqlite3_vfs *clockVfs = 0;
  sqlite3_int64 t;
  if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0);
................................................................................
  }else{
    printf("%4d - %s%.*s ", iTestNum, zName, NAMEWIDTH-n, zDots);
    fflush(stdout);
  }
  sqlite3_free(zName);
  g.nResult = 0;
  g.iStart = speedtest1_timestamp();
  g.x = 0xad131d0b;
  g.y = 0x44f9eac8;
}

/* Complete a test case */
void speedtest1_end_test(void){
  sqlite3_int64 iElapseTime = speedtest1_timestamp() - g.iStart;
  if( !g.bSqlOnly ){
    g.iTotal += iElapseTime;

Added test/without_rowid5.test.



















































































































































































































































































































































































































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# 2013-11-26
#
# 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.
#
#***********************************************************************
#
# Requirements testing for WITHOUT ROWID tables.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl


# EVIDENCE-OF: R-36924-43758 By default, every row in SQLite has a
# special column, usually called the "rowid", that uniquely identifies
# that row within the table.
#
# EVIDENCE-OF: R-32341-39358 However if the phrase "WITHOUT ROWID" is
# added to the end of a CREATE TABLE statement, then the special "rowid"
# column is omitted.
#
do_execsql_test without_rowid5-1.1 {
  CREATE TABLE t1(a PRIMARY KEY,b,c);
  CREATE TABLE t1w(a PRIMARY KEY,b,c) WITHOUT ROWID;
  INSERT INTO t1 VALUES(1565,681,1148),(1429,1190,1619),(425,358,1306);
  INSERT INTO t1w SELECT a,b,c FROM t1;
  SELECT rowid, _rowid_, oid FROM t1 ORDER BY a DESC;
} {1 1 1 2 2 2 3 3 3}
do_catchsql_test without_rowid5-1.2 {
  SELECT rowid FROM t1w;
} {1 {no such column: rowid}}
do_catchsql_test without_rowid5-1.3 {
  SELECT _rowid_ FROM t1w;
} {1 {no such column: _rowid_}}
do_catchsql_test without_rowid5-1.4 {
  SELECT oid FROM t1w;
} {1 {no such column: oid}}

# EVIDENCE-OF: R-00217-01605 To create a WITHOUT ROWID table, simply add
# the keywords "WITHOUT ROWID" to the end of the CREATE TABLE statement.
# For example: CREATE TABLE IF NOT EXISTS wordcount( word TEXT PRIMARY
# KEY, cnt INTEGER ) WITHOUT ROWID;
#
do_execsql_test without_rowid5-2.1 {
  CREATE TABLE IF NOT EXISTS wordcount(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) WITHOUT ROWID;
  INSERT INTO wordcount VALUES('one',1);
} {}
do_catchsql_test without_rowid5-2.2 {
  SELECT rowid FROM wordcount;
} {1 {no such column: rowid}}

# EVIDENCE-OF: R-24770-17719 As with all SQL syntax, the case of the
# keywords does not matter. One can write "WITHOUT rowid" or "without
# rowid" or "WiThOuT rOwId" and it will mean the same thing.
#
do_execsql_test without_rowid5-2.3 {
  CREATE TABLE IF NOT EXISTS wordcount_b(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) WITHOUT rowid;
  INSERT INTO wordcount_b VALUES('one',1);
} {}
do_catchsql_test without_rowid5-2.4 {
  SELECT rowid FROM wordcount_b;
} {1 {no such column: rowid}}
do_execsql_test without_rowid5-2.5 {
  CREATE TABLE IF NOT EXISTS wordcount_c(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) without rowid;
  INSERT INTO wordcount_c VALUES('one',1);
} {}
do_catchsql_test without_rowid5-2.6 {
  SELECT rowid FROM wordcount_c;
} {1 {no such column: rowid}}
do_execsql_test without_rowid5-2.7 {
  CREATE TABLE IF NOT EXISTS wordcount_d(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) WITHOUT rowid;
  INSERT INTO wordcount_d VALUES('one',1);
} {}
do_catchsql_test without_rowid5-2.8 {
  SELECT rowid FROM wordcount_d;
} {1 {no such column: rowid}}

# EVIDENCE-OF: R-01418-51310 However, only "rowid" works as the keyword
# in the CREATE TABLE statement.
#
do_catchsql_test without_rowid5-3.1 {
  CREATE TABLE IF NOT EXISTS error1(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) WITHOUT _rowid_;
} {1 {unknown table option: _rowid_}}  
do_catchsql_test without_rowid5-3.2 {
  CREATE TABLE IF NOT EXISTS error2(
    word TEXT PRIMARY KEY,
    cnt INTEGER
  ) WITHOUT oid;
} {1 {unknown table option: oid}}  

# EVIDENCE-OF: R-58033-17334 An error is raised if a CREATE TABLE
# statement with the WITHOUT ROWID clause lacks a PRIMARY KEY.
#
# EVIDENCE-OF: R-63443-09418 Every WITHOUT ROWID table must have a
# PRIMARY KEY.
#
# EVIDENCE-OF: R-27966-31616 An attempt to create a WITHOUT ROWID table
# without a PRIMARY KEY results in an error.
#
do_catchsql_test without_rowid5-4.1 {
  CREATE TABLE IF NOT EXISTS error3(
    word TEXT UNIQUE,
    cnt INTEGER
  ) WITHOUT ROWID;
} {1 {PRIMARY KEY missing on table error3}}

# EVIDENCE-OF: R-48230-36247 The special behaviors associated "INTEGER
# PRIMARY KEY" do not apply on WITHOUT ROWID tables.
#
do_execsql_test without_rowid5-5.1 {
  CREATE TABLE ipk(key INTEGER PRIMARY KEY, val TEXT) WITHOUT ROWID;
  INSERT INTO ipk VALUES('rival','bonus'); -- ok to insert non-integer key
  SELECT * FROM ipk;
} {rival bonus}
do_catchsql_test without_rowid5-5.2 {
  INSERT INTO ipk VALUES(NULL,'sample'); -- no automatic generation of keys
} {1 {NOT NULL constraint failed: ipk.key}}

# EVIDENCE-OF: R-33142-02092 AUTOINCREMENT does not work on WITHOUT
# ROWID tables.
#
# EVIDENCE-OF: R-53084-07740 An error is raised if the "AUTOINCREMENT"
# keyword is used in the CREATE TABLE statement for a WITHOUT ROWID
# table.
#
do_catchsql_test without_rowid5-5.3 {
  CREATE TABLE ipk2(key INTEGER PRIMARY KEY AUTOINCREMENT, val TEXT)WITHOUT ROWID;
} {1 {AUTOINCREMENT not allowed on WITHOUT ROWID tables}}

# EVIDENCE-OF: R-27831-00579 NOT NULL is enforced on every column of the
# PRIMARY KEY in a WITHOUT ROWID table.
#
# EVIDENCE-OF: R-29781-51289 So, ordinary rowid tables in SQLite violate
# the SQL standard and allow NULL values in PRIMARY KEY fields.
#
# EVIDENCE-OF: R-27472-62612 But WITHOUT ROWID tables do follow the
# standard and will throw an error on any attempt to insert a NULL into
# a PRIMARY KEY column.
#
do_execsql_test without_rowid5-5.4 {
  CREATE TABLE nn(a, b, c, d, e, PRIMARY KEY(c,a,e));
  CREATE TABLE nnw(a, b, c, d, e, PRIMARY KEY(c,a,e)) WITHOUT ROWID;
  INSERT INTO nn VALUES(1,2,3,4,5);
  INSERT INTO nnw VALUES(1,2,3,4,5);
} {}
do_execsql_test without_rowid5-5.5 {
  INSERT INTO nn VALUES(NULL, 3,4,5,6);
  INSERT INTO nn VALUES(3,4,NULL,7,8);
  INSERT INTO nn VALUES(4,5,6,7,NULL);
  SELECT count(*) FROM nn;
} {4}
do_catchsql_test without_rowid5-5.6 {
  INSERT INTO nnw VALUES(NULL, 3,4,5,6);
} {1 {NOT NULL constraint failed: nnw.a}}
do_catchsql_test without_rowid5-5.7 {
  INSERT INTO nnw VALUES(3,4,NULL,7,8)
} {1 {NOT NULL constraint failed: nnw.c}}
do_catchsql_test without_rowid5-5.8 {
  INSERT INTO nnw VALUES(4,5,6,7,NULL)
} {1 {NOT NULL constraint failed: nnw.e}}
do_execsql_test without_rowid5-5.9 {
  SELECT count(*) FROM nnw;
} {1}

# EVIDENCE-OF: R-12643-30541 The incremental blob I/O mechanism does not
# work for WITHOUT ROWID tables.
#
# EVIDENCE-OF: R-25760-33257 The sqlite3_blob_open() interface will fail
# for a WITHOUT ROWID table.
#
do_execsql_test without_rowid5-6.1 {
  CREATE TABLE b1(a INTEGER PRIMARY KEY, b BLOB) WITHOUT ROWID;
  INSERT INTO b1 VALUES(1,x'0102030405060708090a0b0c0d0e0f');
} {}
do_test without_rowid5-6.2 {
  set rc [catch {db incrblob b1 b 1} msg]
  lappend rc $msg
} {1 {cannot open table without rowid: b1}}


finish_test