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Overview
Comment:Fix some problems with the feature on this branch. Many problems remain.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | reuse-schema1
Files: files | file ages | folders
SHA3-256: 31b6aee755c81d69aeaf3ae197e510d38e5e3bb83ded44c33379bcd0d4c23300
User & Date: dan 2018-11-15 21:20:56
Context
2018-11-16
17:04
Fix further REUSE_SCHEMA issues. check-in: 9780829a user: dan tags: reuse-schema1
2018-11-15
21:20
Fix some problems with the feature on this branch. Many problems remain. check-in: 31b6aee7 user: dan tags: reuse-schema1
2018-11-09
18:44
Merge latest trunk changes with this branch. check-in: ae88f8e1 user: dan tags: reuse-schema
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/build.c.

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*/
Table *sqlite3LocateTableItem(
  Parse *pParse, 
  u32 flags,
  struct SrcList_item *p
){
  const char *zDb;



  assert( p->pSchema==0 || p->zDatabase==0 );


  if( p->pSchema ){
    int iDb = sqlite3SchemaToIndex(pParse->db, p->pSchema);
    zDb = pParse->db->aDb[iDb].zDbSName;
  }else{
    zDb = p->zDatabase;
  }
  return sqlite3LocateTable(pParse, flags, p->zName, zDb);
}
................................................................................
  u8 idxType         /* The index type */
){
  Table *pTab = 0;     /* Table to be indexed */
  Index *pIndex = 0;   /* The index to be created */
  char *zName = 0;     /* Name of the index */
  int nName;           /* Number of characters in zName */
  int i, j;
  DbFixer sFix;        /* For assigning database names to pTable */
  int sortOrderMask;   /* 1 to honor DESC in index.  0 to ignore. */
  sqlite3 *db = pParse->db;
  Db *pDb;             /* The specific table containing the indexed database */
  int iDb;             /* Index of the database that is being written */
  Token *pName = 0;    /* Unqualified name of the index to create */
  struct ExprList_item *pListItem; /* For looping over pList */
  int nExtra = 0;                  /* Space allocated for zExtra[] */
................................................................................
      pTab = sqlite3SrcListLookup(pParse, pTblName);
      if( pName2->n==0 && pTab && pTab->pSchema==db->aDb[1].pSchema ){
        iDb = 1;
      }
    }
#endif

    sqlite3FixInit(&sFix, pParse, iDb, "index", pName);
    if( sqlite3FixSrcList(&sFix, pTblName) ){
      /* Because the parser constructs pTblName from a single identifier,
      ** sqlite3FixSrcList can never fail. */
      assert(0);
    }
    pTab = sqlite3LocateTableItem(pParse, 0, &pTblName->a[0]);

    assert( db->mallocFailed==0 || pTab==0 );
    if( pTab==0 ) goto exit_create_index;
    if( iDb==1 && db->aDb[iDb].pSchema!=pTab->pSchema ){
      sqlite3ErrorMsg(pParse, 
           "cannot create a TEMP index on non-TEMP table \"%s\"",
           pTab->zName);
      goto exit_create_index;







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*/
Table *sqlite3LocateTableItem(
  Parse *pParse, 
  u32 flags,
  struct SrcList_item *p
){
  const char *zDb;
  if( pParse->iFixDb && pParse->iFixDb!=2 ){
    zDb = pParse->db->aDb[pParse->iFixDb-1].zDbSName;
    assert( p->zDatabase==0 || sqlite3StrICmp(p->zDatabase, zDb)==0 );
    if( p->zDatabase==0 ){
      p->zDatabase = sqlite3DbStrDup(pParse->db, zDb);
    }
  }else if( p->pSchema ){
    int iDb = sqlite3SchemaToIndex(pParse->db, p->pSchema);
    zDb = pParse->db->aDb[iDb].zDbSName;
  }else{
    zDb = p->zDatabase;
  }
  return sqlite3LocateTable(pParse, flags, p->zName, zDb);
}
................................................................................
  u8 idxType         /* The index type */
){
  Table *pTab = 0;     /* Table to be indexed */
  Index *pIndex = 0;   /* The index to be created */
  char *zName = 0;     /* Name of the index */
  int nName;           /* Number of characters in zName */
  int i, j;

  int sortOrderMask;   /* 1 to honor DESC in index.  0 to ignore. */
  sqlite3 *db = pParse->db;
  Db *pDb;             /* The specific table containing the indexed database */
  int iDb;             /* Index of the database that is being written */
  Token *pName = 0;    /* Unqualified name of the index to create */
  struct ExprList_item *pListItem; /* For looping over pList */
  int nExtra = 0;                  /* Space allocated for zExtra[] */
................................................................................
      pTab = sqlite3SrcListLookup(pParse, pTblName);
      if( pName2->n==0 && pTab && pTab->pSchema==db->aDb[1].pSchema ){
        iDb = 1;
      }
    }
#endif

    if( iDb!=1 ) pTblName->a[0].zDatabase = db->aDb[iDb].zDbSName;





    pTab = sqlite3LocateTableItem(pParse, 0, &pTblName->a[0]);
    pTblName->a[0].zDatabase = 0;
    assert( db->mallocFailed==0 || pTab==0 );
    if( pTab==0 ) goto exit_create_index;
    if( iDb==1 && db->aDb[iDb].pSchema!=pTab->pSchema ){
      sqlite3ErrorMsg(pParse, 
           "cannot create a TEMP index on non-TEMP table \"%s\"",
           pTab->zName);
      goto exit_create_index;

Changes to src/callback.c.

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** schema in the list, then the new schema is added to it.
*/
void sqlite3SchemaReuse(sqlite3 *db, int iDb){
  Schema *pSchema = db->aDb[iDb].pSchema;
  Schema *p;
  assert( pSchema && iDb!=1 );

  sqlite3_mutex_enter( sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER) );
  for(p=sharedSchemaList; p; p=p->pNext){
    if( p->cksum==pSchema->cksum 
        && p->schema_cookie==pSchema->schema_cookie 
      ){
      break;
    }
  }
  if( !p ){
    /* No matching schema was found. */
    pSchema->pNext = sharedSchemaList;
    sharedSchemaList = pSchema;
  }else{
    /* Found a matching schema. Increase its ref count. */
    p->nRef++;
  }
  sqlite3_mutex_leave( sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER) );

  /* If a matching schema was found in the shared schema list, free the
  ** schema object just parsed, and add a pointer to the matching schema
  ** to the db handle.  */
  if( p ){
    sqlite3SchemaClear(pSchema);
    sqlite3DbFree(0, pSchema);







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** schema in the list, then the new schema is added to it.
*/
void sqlite3SchemaReuse(sqlite3 *db, int iDb){
  Schema *pSchema = db->aDb[iDb].pSchema;
  Schema *p;
  assert( pSchema && iDb!=1 );

  sqlite3_mutex_enter( sqlite3_mutex_alloc(SQLITE_MUTEX_SCHEMA_REUSE) );
  for(p=sharedSchemaList; p; p=p->pNext){
    if( p->cksum==pSchema->cksum 
     && p->schema_cookie==pSchema->schema_cookie 
    ){
      break;
    }
  }
  if( !p ){
    /* No matching schema was found. */
    pSchema->pNext = sharedSchemaList;
    sharedSchemaList = pSchema;
  }else{
    /* Found a matching schema. Increase its ref count. */
    p->nRef++;
  }
  sqlite3_mutex_leave( sqlite3_mutex_alloc(SQLITE_MUTEX_SCHEMA_REUSE) );

  /* If a matching schema was found in the shared schema list, free the
  ** schema object just parsed, and add a pointer to the matching schema
  ** to the db handle.  */
  if( p ){
    sqlite3SchemaClear(pSchema);
    sqlite3DbFree(0, pSchema);

Changes to src/delete.c.

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/*
** Evaluate a view and store its result in an ephemeral table.  The
** pWhere argument is an optional WHERE clause that restricts the
** set of rows in the view that are to be added to the ephemeral table.
*/
void sqlite3MaterializeView(
  Parse *pParse,       /* Parsing context */

  Table *pView,        /* View definition */
  Expr *pWhere,        /* Optional WHERE clause to be added */
  ExprList *pOrderBy,  /* Optional ORDER BY clause */
  Expr *pLimit,        /* Optional LIMIT clause */
  int iCur             /* Cursor number for ephemeral table */
){
  SelectDest dest;
  Select *pSel;
  SrcList *pFrom;
  sqlite3 *db = pParse->db;
  int iDb = sqlite3SchemaToIndex(db, pView->pSchema);
  pWhere = sqlite3ExprDup(db, pWhere, 0);
  pFrom = sqlite3SrcListAppend(db, 0, 0, 0);
  if( pFrom ){
    assert( pFrom->nSrc==1 );
    pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName);
    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName);
    assert( pFrom->a[0].pOn==0 );
................................................................................
  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto delete_from_cleanup;
  }

  if( sqlite3IsReadOnly(pParse, pTab, (pTrigger?1:0)) ){
    goto delete_from_cleanup;
  }
  iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
  assert( iDb<db->nDb );
  rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, 
                            db->aDb[iDb].zDbSName);
  assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE );
  if( rcauth==SQLITE_DENY ){
    goto delete_from_cleanup;
  }
................................................................................
  sqlite3BeginWriteOperation(pParse, bComplex, iDb);

  /* If we are trying to delete from a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, 
        pWhere, pOrderBy, pLimit, iTabCur
    );
    iDataCur = iIdxCur = iTabCur;
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  /* Resolve the column names in the WHERE clause.
................................................................................
    */
    if( !isView ){
      int iAddrOnce = 0;
      if( eOnePass==ONEPASS_MULTI ){
        iAddrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
      }
      testcase( IsVirtual(pTab) );
      sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, OPFLAG_FORDELETE,
                                 iTabCur, aToOpen, &iDataCur, &iIdxCur);
      assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur );
      assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 );
      if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce);
    }
  
    /* Set up a loop over the rowids/primary-keys that were found in the
    ** where-clause loop above.
................................................................................
      }
      sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iKey, pVTab, P4_VTAB);
      sqlite3VdbeChangeP5(v, OE_Abort);
    }else
#endif
    {
      int count = (pParse->nested==0);    /* True to count changes */
      sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur,
          iKey, nKey, count, OE_Default, eOnePass, aiCurOnePass[1]);
    }
  
    /* End of the loop over all rowids/primary-keys. */
    if( eOnePass!=ONEPASS_OFF ){
      sqlite3VdbeResolveLabel(v, addrBypass);
      sqlite3WhereEnd(pWInfo);
................................................................................
**   then it identifies an index cursor (from within array of cursors
**   starting at iIdxCur) that already points to the index entry to be deleted.
**   Except, this optimization is disabled if there are BEFORE triggers since
**   the trigger body might have moved the cursor.
*/
void sqlite3GenerateRowDelete(
  Parse *pParse,     /* Parsing context */

  Table *pTab,       /* Table containing the row to be deleted */
  Trigger *pTrigger, /* List of triggers to (potentially) fire */
  int iDataCur,      /* Cursor from which column data is extracted */
  int iIdxCur,       /* First index cursor */
  int iPk,           /* First memory cell containing the PRIMARY KEY */
  i16 nPk,           /* Number of PRIMARY KEY memory cells */
  u8 count,          /* If non-zero, increment the row change counter */
................................................................................
    u32 mask;                     /* Mask of OLD.* columns in use */
    int iCol;                     /* Iterator used while populating OLD.* */
    int addrStart;                /* Start of BEFORE trigger programs */

    /* TODO: Could use temporary registers here. Also could attempt to
    ** avoid copying the contents of the rowid register.  */
    mask = sqlite3TriggerColmask(
        pParse, pTrigger, 0, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onconf
    );
    mask |= sqlite3FkOldmask(pParse, pTab);
    iOld = pParse->nMem+1;
    pParse->nMem += (1 + pTab->nCol);

    /* Populate the OLD.* pseudo-table register array. These values will be 
    ** used by any BEFORE and AFTER triggers that exist.  */
................................................................................
      if( mask==0xffffffff || (iCol<=31 && (mask & MASKBIT32(iCol))!=0) ){
        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+iCol+1);
      }
    }

    /* Invoke BEFORE DELETE trigger programs. */
    addrStart = sqlite3VdbeCurrentAddr(v);
    sqlite3CodeRowTrigger(pParse, pTrigger, 
        TK_DELETE, 0, TRIGGER_BEFORE, pTab, iOld, onconf, iLabel
    );

    /* If any BEFORE triggers were coded, then seek the cursor to the 
    ** row to be deleted again. It may be that the BEFORE triggers moved
    ** the cursor or already deleted the row that the cursor was
    ** pointing to.
................................................................................
    if( eMode==ONEPASS_MULTI ) p5 |= OPFLAG_SAVEPOSITION;
    sqlite3VdbeChangeP5(v, p5);
  }

  /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to
  ** handle rows (possibly in other tables) that refer via a foreign key
  ** to the row just deleted. */ 
  sqlite3FkActions(pParse, pTab, 0, iOld, 0, 0);

  /* Invoke AFTER DELETE trigger programs. */
  sqlite3CodeRowTrigger(pParse, pTrigger, 
      TK_DELETE, 0, TRIGGER_AFTER, pTab, iOld, onconf, iLabel
  );

  /* Jump here if the row had already been deleted before any BEFORE
  ** trigger programs were invoked. Or if a trigger program throws a 
  ** RAISE(IGNORE) exception.  */
  sqlite3VdbeResolveLabel(v, iLabel);







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/*
** Evaluate a view and store its result in an ephemeral table.  The
** pWhere argument is an optional WHERE clause that restricts the
** set of rows in the view that are to be added to the ephemeral table.
*/
void sqlite3MaterializeView(
  Parse *pParse,       /* Parsing context */
  int iDb,             /* Database in which view resides */
  Table *pView,        /* View definition */
  Expr *pWhere,        /* Optional WHERE clause to be added */
  ExprList *pOrderBy,  /* Optional ORDER BY clause */
  Expr *pLimit,        /* Optional LIMIT clause */
  int iCur             /* Cursor number for ephemeral table */
){
  SelectDest dest;
  Select *pSel;
  SrcList *pFrom;
  sqlite3 *db = pParse->db;

  pWhere = sqlite3ExprDup(db, pWhere, 0);
  pFrom = sqlite3SrcListAppend(db, 0, 0, 0);
  if( pFrom ){
    assert( pFrom->nSrc==1 );
    pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName);
    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName);
    assert( pFrom->a[0].pOn==0 );
................................................................................
  if( sqlite3ViewGetColumnNames(pParse, pTab) ){
    goto delete_from_cleanup;
  }

  if( sqlite3IsReadOnly(pParse, pTab, (pTrigger?1:0)) ){
    goto delete_from_cleanup;
  }
  iDb = sqlite3SchemaToIndex2(db, pTab->pSchema, pTabList->a[0].zDatabase);
  assert( iDb<db->nDb );
  rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, 
                            db->aDb[iDb].zDbSName);
  assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE );
  if( rcauth==SQLITE_DENY ){
    goto delete_from_cleanup;
  }
................................................................................
  sqlite3BeginWriteOperation(pParse, bComplex, iDb);

  /* If we are trying to delete from a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, iDb, pTab, pWhere, pOrderBy, pLimit,iTabCur);


    iDataCur = iIdxCur = iTabCur;
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

  /* Resolve the column names in the WHERE clause.
................................................................................
    */
    if( !isView ){
      int iAddrOnce = 0;
      if( eOnePass==ONEPASS_MULTI ){
        iAddrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
      }
      testcase( IsVirtual(pTab) );
      sqlite3OpenTableAndIndices(pParse, iDb, pTab, OP_OpenWrite, 
          OPFLAG_FORDELETE, iTabCur, aToOpen, &iDataCur, &iIdxCur);
      assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur );
      assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 );
      if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce);
    }
  
    /* Set up a loop over the rowids/primary-keys that were found in the
    ** where-clause loop above.
................................................................................
      }
      sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iKey, pVTab, P4_VTAB);
      sqlite3VdbeChangeP5(v, OE_Abort);
    }else
#endif
    {
      int count = (pParse->nested==0);    /* True to count changes */
      sqlite3GenerateRowDelete(pParse, iDb, pTab, pTrigger, iDataCur, iIdxCur,
          iKey, nKey, count, OE_Default, eOnePass, aiCurOnePass[1]);
    }
  
    /* End of the loop over all rowids/primary-keys. */
    if( eOnePass!=ONEPASS_OFF ){
      sqlite3VdbeResolveLabel(v, addrBypass);
      sqlite3WhereEnd(pWInfo);
................................................................................
**   then it identifies an index cursor (from within array of cursors
**   starting at iIdxCur) that already points to the index entry to be deleted.
**   Except, this optimization is disabled if there are BEFORE triggers since
**   the trigger body might have moved the cursor.
*/
void sqlite3GenerateRowDelete(
  Parse *pParse,     /* Parsing context */
  int iDb,
  Table *pTab,       /* Table containing the row to be deleted */
  Trigger *pTrigger, /* List of triggers to (potentially) fire */
  int iDataCur,      /* Cursor from which column data is extracted */
  int iIdxCur,       /* First index cursor */
  int iPk,           /* First memory cell containing the PRIMARY KEY */
  i16 nPk,           /* Number of PRIMARY KEY memory cells */
  u8 count,          /* If non-zero, increment the row change counter */
................................................................................
    u32 mask;                     /* Mask of OLD.* columns in use */
    int iCol;                     /* Iterator used while populating OLD.* */
    int addrStart;                /* Start of BEFORE trigger programs */

    /* TODO: Could use temporary registers here. Also could attempt to
    ** avoid copying the contents of the rowid register.  */
    mask = sqlite3TriggerColmask(
        pParse, iDb, pTrigger, 0, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onconf
    );
    mask |= sqlite3FkOldmask(pParse, pTab);
    iOld = pParse->nMem+1;
    pParse->nMem += (1 + pTab->nCol);

    /* Populate the OLD.* pseudo-table register array. These values will be 
    ** used by any BEFORE and AFTER triggers that exist.  */
................................................................................
      if( mask==0xffffffff || (iCol<=31 && (mask & MASKBIT32(iCol))!=0) ){
        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+iCol+1);
      }
    }

    /* Invoke BEFORE DELETE trigger programs. */
    addrStart = sqlite3VdbeCurrentAddr(v);
    sqlite3CodeRowTrigger(pParse, iDb, pTrigger, 
        TK_DELETE, 0, TRIGGER_BEFORE, pTab, iOld, onconf, iLabel
    );

    /* If any BEFORE triggers were coded, then seek the cursor to the 
    ** row to be deleted again. It may be that the BEFORE triggers moved
    ** the cursor or already deleted the row that the cursor was
    ** pointing to.
................................................................................
    if( eMode==ONEPASS_MULTI ) p5 |= OPFLAG_SAVEPOSITION;
    sqlite3VdbeChangeP5(v, p5);
  }

  /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to
  ** handle rows (possibly in other tables) that refer via a foreign key
  ** to the row just deleted. */ 
  sqlite3FkActions(pParse, iDb, pTab, 0, iOld, 0, 0);

  /* Invoke AFTER DELETE trigger programs. */
  sqlite3CodeRowTrigger(pParse, iDb, pTrigger, 
      TK_DELETE, 0, TRIGGER_AFTER, pTab, iOld, onconf, iLabel
  );

  /* Jump here if the row had already been deleted before any BEFORE
  ** trigger programs were invoked. Or if a trigger program throws a 
  ** RAISE(IGNORE) exception.  */
  sqlite3VdbeResolveLabel(v, iLabel);

Changes to src/fkey.c.

1355
1356
1357
1358
1359
1360
1361

1362
1363
1364
1365
1366
1367
1368
....
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385

/*
** This function is called when deleting or updating a row to implement
** any required CASCADE, SET NULL or SET DEFAULT actions.
*/
void sqlite3FkActions(
  Parse *pParse,                  /* Parse context */

  Table *pTab,                    /* Table being updated or deleted from */
  ExprList *pChanges,             /* Change-list for UPDATE, NULL for DELETE */
  int regOld,                     /* Address of array containing old row */
  int *aChange,                   /* Array indicating UPDATEd columns (or 0) */
  int bChngRowid                  /* True if rowid is UPDATEd */
){
  /* If foreign-key support is enabled, iterate through all FKs that 
................................................................................
  ** trigger sub-program.  */
  if( pParse->db->flags&SQLITE_ForeignKeys ){
    FKey *pFKey;                  /* Iterator variable */
    for(pFKey = sqlite3FkReferences(pTab); pFKey; pFKey=pFKey->pNextTo){
      if( aChange==0 || fkParentIsModified(pTab, pFKey, aChange, bChngRowid) ){
        Trigger *pAct = fkActionTrigger(pParse, pTab, pFKey, pChanges);
        if( pAct ){
          sqlite3CodeRowTriggerDirect(pParse, pAct, pTab, regOld, OE_Abort, 0);
        }
      }
    }
  }
}

#endif /* ifndef SQLITE_OMIT_TRIGGER */







>







 







|







1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
....
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386

/*
** This function is called when deleting or updating a row to implement
** any required CASCADE, SET NULL or SET DEFAULT actions.
*/
void sqlite3FkActions(
  Parse *pParse,                  /* Parse context */
  int iDb,                        /* Database in which pTab resides */
  Table *pTab,                    /* Table being updated or deleted from */
  ExprList *pChanges,             /* Change-list for UPDATE, NULL for DELETE */
  int regOld,                     /* Address of array containing old row */
  int *aChange,                   /* Array indicating UPDATEd columns (or 0) */
  int bChngRowid                  /* True if rowid is UPDATEd */
){
  /* If foreign-key support is enabled, iterate through all FKs that 
................................................................................
  ** trigger sub-program.  */
  if( pParse->db->flags&SQLITE_ForeignKeys ){
    FKey *pFKey;                  /* Iterator variable */
    for(pFKey = sqlite3FkReferences(pTab); pFKey; pFKey=pFKey->pNextTo){
      if( aChange==0 || fkParentIsModified(pTab, pFKey, aChange, bChngRowid) ){
        Trigger *pAct = fkActionTrigger(pParse, pTab, pFKey, pChanges);
        if( pAct ){
          sqlite3CodeRowTriggerDirect(pParse, iDb, pAct,pTab,regOld,OE_Abort,0);
        }
      }
    }
  }
}

#endif /* ifndef SQLITE_OMIT_TRIGGER */

Changes to src/insert.c.

564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
...
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
...
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
....
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
....
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
....
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
....
1963
1964
1965
1966
1967
1968
1969

1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
  /* Locate the table into which we will be inserting new information.
  */
  assert( pTabList->nSrc==1 );
  pTab = sqlite3SrcListLookup(pParse, pTabList);
  if( pTab==0 ){
    goto insert_cleanup;
  }
  iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
  assert( iDb<db->nDb );
  if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0,
                       db->aDb[iDb].zDbSName) ){
    goto insert_cleanup;
  }
  withoutRowid = !HasRowid(pTab);

................................................................................
    regRowCount = ++pParse->nMem;
    sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount);
  }

  /* If this is not a view, open the table and and all indices */
  if( !isView ){
    int nIdx;
    nIdx = sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, -1, 0,
                                      &iDataCur, &iIdxCur);
    aRegIdx = sqlite3DbMallocRawNN(db, sizeof(int)*(nIdx+1));
    if( aRegIdx==0 ){
      goto insert_cleanup;
    }
    for(i=0, pIdx=pTab->pIndex; i<nIdx; pIdx=pIdx->pNext, i++){
      assert( pIdx );
................................................................................
    ** table column affinities.
    */
    if( !isView ){
      sqlite3TableAffinity(v, pTab, regCols+1);
    }

    /* Fire BEFORE or INSTEAD OF triggers */
    sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_BEFORE, 
        pTab, regCols-pTab->nCol-1, onError, endOfLoop);

    sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol+1);
  }

  /* Compute the content of the next row to insert into a range of
  ** registers beginning at regIns.
................................................................................
  */
  if( regRowCount ){
    sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1);
  }

  if( pTrigger ){
    /* Code AFTER triggers */
    sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_AFTER, 
        pTab, regData-2-pTab->nCol, onError, endOfLoop);
  }

  /* The bottom of the main insertion loop, if the data source
  ** is a SELECT statement.
  */
  sqlite3VdbeResolveLabel(v, endOfLoop);
................................................................................
        */
        Trigger *pTrigger = 0;
        if( db->flags&SQLITE_RecTriggers ){
          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
        }
        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
          sqlite3MultiWrite(pParse);
          sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur,
                                   regNewData, 1, 0, OE_Replace, 1, -1);
        }else{
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
          assert( HasRowid(pTab) );
          /* This OP_Delete opcode fires the pre-update-hook only. It does
          ** not modify the b-tree. It is more efficient to let the coming
          ** OP_Insert replace the existing entry than it is to delete the
................................................................................
        assert( onError==OE_Replace );
        if( db->flags&SQLITE_RecTriggers ){
          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
        }
        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
          sqlite3MultiWrite(pParse);
        }
        sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur,
            regR, nPkField, 0, OE_Replace,
            (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur);
        seenReplace = 1;
        break;
      }
    }
    if( pUpIdx==pIdx ){
................................................................................
** pTab->pIndex list.
**
** If pTab is a virtual table, then this routine is a no-op and the
** *piDataCur and *piIdxCur values are left uninitialized.
*/
int sqlite3OpenTableAndIndices(
  Parse *pParse,   /* Parsing context */

  Table *pTab,     /* Table to be opened */
  int op,          /* OP_OpenRead or OP_OpenWrite */
  u8 p5,           /* P5 value for OP_Open* opcodes (except on WITHOUT ROWID) */
  int iBase,       /* Use this for the table cursor, if there is one */
  u8 *aToOpen,     /* If not NULL: boolean for each table and index */
  int *piDataCur,  /* Write the database source cursor number here */
  int *piIdxCur    /* Write the first index cursor number here */
){
  int i;
  int iDb;
  int iDataCur;
  Index *pIdx;
  Vdbe *v;

  assert( op==OP_OpenRead || op==OP_OpenWrite );
  assert( op==OP_OpenWrite || p5==0 );
  if( IsVirtual(pTab) ){
    /* This routine is a no-op for virtual tables. Leave the output
    ** variables *piDataCur and *piIdxCur uninitialized so that valgrind
    ** can detect if they are used by mistake in the caller. */
    return 0;
  }
  iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);
  v = sqlite3GetVdbe(pParse);
  assert( v!=0 );
  if( iBase<0 ) iBase = pParse->nTab;
  iDataCur = iBase++;
  if( piDataCur ) *piDataCur = iDataCur;
  if( HasRowid(pTab) && (aToOpen==0 || aToOpen[0]) ){
    sqlite3OpenTable(pParse, iDataCur, iDb, pTab, op);







|







 







|







 







|







 







|







 







|







 







|







 







>









<












<







564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
...
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
...
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
....
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
....
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
....
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
....
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979

1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991

1992
1993
1994
1995
1996
1997
1998
  /* Locate the table into which we will be inserting new information.
  */
  assert( pTabList->nSrc==1 );
  pTab = sqlite3SrcListLookup(pParse, pTabList);
  if( pTab==0 ){
    goto insert_cleanup;
  }
  iDb = sqlite3SchemaToIndex2(db, pTab->pSchema, pTabList->a[0].zDatabase);
  assert( iDb<db->nDb );
  if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0,
                       db->aDb[iDb].zDbSName) ){
    goto insert_cleanup;
  }
  withoutRowid = !HasRowid(pTab);

................................................................................
    regRowCount = ++pParse->nMem;
    sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount);
  }

  /* If this is not a view, open the table and and all indices */
  if( !isView ){
    int nIdx;
    nIdx = sqlite3OpenTableAndIndices(pParse, iDb, pTab, OP_OpenWrite, 0, -1, 0,
                                      &iDataCur, &iIdxCur);
    aRegIdx = sqlite3DbMallocRawNN(db, sizeof(int)*(nIdx+1));
    if( aRegIdx==0 ){
      goto insert_cleanup;
    }
    for(i=0, pIdx=pTab->pIndex; i<nIdx; pIdx=pIdx->pNext, i++){
      assert( pIdx );
................................................................................
    ** table column affinities.
    */
    if( !isView ){
      sqlite3TableAffinity(v, pTab, regCols+1);
    }

    /* Fire BEFORE or INSTEAD OF triggers */
    sqlite3CodeRowTrigger(pParse, iDb, pTrigger, TK_INSERT, 0, TRIGGER_BEFORE, 
        pTab, regCols-pTab->nCol-1, onError, endOfLoop);

    sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol+1);
  }

  /* Compute the content of the next row to insert into a range of
  ** registers beginning at regIns.
................................................................................
  */
  if( regRowCount ){
    sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1);
  }

  if( pTrigger ){
    /* Code AFTER triggers */
    sqlite3CodeRowTrigger(pParse, iDb, pTrigger, TK_INSERT, 0, TRIGGER_AFTER, 
        pTab, regData-2-pTab->nCol, onError, endOfLoop);
  }

  /* The bottom of the main insertion loop, if the data source
  ** is a SELECT statement.
  */
  sqlite3VdbeResolveLabel(v, endOfLoop);
................................................................................
        */
        Trigger *pTrigger = 0;
        if( db->flags&SQLITE_RecTriggers ){
          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
        }
        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
          sqlite3MultiWrite(pParse);
          sqlite3GenerateRowDelete(pParse, 0, pTab, pTrigger, iDataCur, iIdxCur,
                                   regNewData, 1, 0, OE_Replace, 1, -1);
        }else{
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
          assert( HasRowid(pTab) );
          /* This OP_Delete opcode fires the pre-update-hook only. It does
          ** not modify the b-tree. It is more efficient to let the coming
          ** OP_Insert replace the existing entry than it is to delete the
................................................................................
        assert( onError==OE_Replace );
        if( db->flags&SQLITE_RecTriggers ){
          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
        }
        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
          sqlite3MultiWrite(pParse);
        }
        sqlite3GenerateRowDelete(pParse, 0, pTab, pTrigger, iDataCur, iIdxCur,
            regR, nPkField, 0, OE_Replace,
            (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur);
        seenReplace = 1;
        break;
      }
    }
    if( pUpIdx==pIdx ){
................................................................................
** pTab->pIndex list.
**
** If pTab is a virtual table, then this routine is a no-op and the
** *piDataCur and *piIdxCur values are left uninitialized.
*/
int sqlite3OpenTableAndIndices(
  Parse *pParse,   /* Parsing context */
  int iDb,         /* Database to open pTab in */
  Table *pTab,     /* Table to be opened */
  int op,          /* OP_OpenRead or OP_OpenWrite */
  u8 p5,           /* P5 value for OP_Open* opcodes (except on WITHOUT ROWID) */
  int iBase,       /* Use this for the table cursor, if there is one */
  u8 *aToOpen,     /* If not NULL: boolean for each table and index */
  int *piDataCur,  /* Write the database source cursor number here */
  int *piIdxCur    /* Write the first index cursor number here */
){
  int i;

  int iDataCur;
  Index *pIdx;
  Vdbe *v;

  assert( op==OP_OpenRead || op==OP_OpenWrite );
  assert( op==OP_OpenWrite || p5==0 );
  if( IsVirtual(pTab) ){
    /* This routine is a no-op for virtual tables. Leave the output
    ** variables *piDataCur and *piIdxCur uninitialized so that valgrind
    ** can detect if they are used by mistake in the caller. */
    return 0;
  }

  v = sqlite3GetVdbe(pParse);
  assert( v!=0 );
  if( iBase<0 ) iBase = pParse->nTab;
  iDataCur = iBase++;
  if( piDataCur ) *piDataCur = iDataCur;
  if( HasRowid(pTab) && (aToOpen==0 || aToOpen[0]) ){
    sqlite3OpenTable(pParse, iDataCur, iDb, pTab, op);

Changes to src/pragma.c.

1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
        Index *pPrior = 0;
        int loopTop;
        int iDataCur, iIdxCur;
        int r1 = -1;

        if( pTab->tnum<1 ) continue;  /* Skip VIEWs or VIRTUAL TABLEs */
        pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab);
        sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead, 0,
                                   1, 0, &iDataCur, &iIdxCur);
        /* reg[7] counts the number of entries in the table.
        ** reg[8+i] counts the number of entries in the i-th index 
        */
        sqlite3VdbeAddOp2(v, OP_Integer, 0, 7);
        for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
          sqlite3VdbeAddOp2(v, OP_Integer, 0, 8+j); /* index entries counter */







|







1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
        Index *pPrior = 0;
        int loopTop;
        int iDataCur, iIdxCur;
        int r1 = -1;

        if( pTab->tnum<1 ) continue;  /* Skip VIEWs or VIRTUAL TABLEs */
        pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab);
        sqlite3OpenTableAndIndices(pParse, i, pTab, OP_OpenRead, 0,
                                   1, 0, &iDataCur, &iIdxCur);
        /* reg[7] counts the number of entries in the table.
        ** reg[8+i] counts the number of entries in the i-th index 
        */
        sqlite3VdbeAddOp2(v, OP_Integer, 0, 7);
        for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
          sqlite3VdbeAddOp2(v, OP_Integer, 0, 8+j); /* index entries counter */

Changes to src/prepare.c.

529
530
531
532
533
534
535











536
537
538
539
540
541
542
        break;
      }
    }
    assert( i>=0 && i<db->nDb );
  }
  return i;
}












/*
** Free all memory allocations in the pParse object
*/
void sqlite3ParserReset(Parse *pParse){
  sqlite3 *db = pParse->db;
  sqlite3DbFree(db, pParse->aLabel);







>
>
>
>
>
>
>
>
>
>
>







529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
        break;
      }
    }
    assert( i>=0 && i<db->nDb );
  }
  return i;
}

int sqlite3SchemaToIndex2(sqlite3 *db, Schema *pSchema, const char *zDb){
  if( zDb ){
    int i;
    for(i=0; i<db->nDb; i++){
      if( i==1 ) continue;
      if( sqlite3StrICmp(zDb, db->aDb[i].zDbSName)==0 ) return i;
    }
  }
  return sqlite3SchemaToIndex(db, pSchema);
}

/*
** Free all memory allocations in the pParse object
*/
void sqlite3ParserReset(Parse *pParse){
  sqlite3 *db = pParse->db;
  sqlite3DbFree(db, pParse->aLabel);

Changes to src/select.c.

4882
4883
4884
4885
4886
4887
4888

4889



4890



4891
4892
4893
4894
4895

4896
4897
4898
4899
4900
4901
4902
      }
      pTab->nTabRef++;
      if( !IsVirtual(pTab) && cannotBeFunction(pParse, pFrom) ){
        return WRC_Abort;
      }
#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE)
      if( IsVirtual(pTab) || pTab->pSelect ){

        i16 nCol;



        if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort;



        assert( pFrom->pSelect==0 );
        pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0);
        nCol = pTab->nCol;
        pTab->nCol = -1;
        sqlite3WalkSelect(pWalker, pFrom->pSelect);

        pTab->nCol = nCol;
      }
#endif
    }

    /* Locate the index named by the INDEXED BY clause, if any. */
    if( sqlite3IndexedByLookup(pParse, pFrom) ){







>

>
>
>
|
>
>
>





>







4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
      }
      pTab->nTabRef++;
      if( !IsVirtual(pTab) && cannotBeFunction(pParse, pFrom) ){
        return WRC_Abort;
      }
#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE)
      if( IsVirtual(pTab) || pTab->pSelect ){
        int iSave = pParse->iFixDb;
        i16 nCol;
        pParse->iFixDb = 1 + sqlite3SchemaToIndex2(
            db, pTab->pSchema, pFrom->zDatabase
        );
        if( sqlite3ViewGetColumnNames(pParse, pTab) ){
          pParse->iFixDb = iSave;
          return WRC_Abort;
        }
        assert( pFrom->pSelect==0 );
        pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0);
        nCol = pTab->nCol;
        pTab->nCol = -1;
        sqlite3WalkSelect(pWalker, pFrom->pSelect);
        pParse->iFixDb = iSave;
        pTab->nCol = nCol;
      }
#endif
    }

    /* Locate the index named by the INDEXED BY clause, if any. */
    if( sqlite3IndexedByLookup(pParse, pFrom) ){

Changes to src/shell.c.in.

1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
*/
#define SHELL_OPEN_UNSPEC      0      /* No open-mode specified */
#define SHELL_OPEN_NORMAL      1      /* Normal database file */
#define SHELL_OPEN_APPENDVFS   2      /* Use appendvfs */
#define SHELL_OPEN_ZIPFILE     3      /* Use the zipfile virtual table */
#define SHELL_OPEN_READONLY    4      /* Open a normal database read-only */
#define SHELL_OPEN_DESERIALIZE 5      /* Open using sqlite3_deserialize() */
#define SHELL_OPEN_REUSESCHEMA 5    /* Open for schema reuse */

/*
** These are the allowed shellFlgs values
*/
#define SHFLG_Pagecache      0x00000001 /* The --pagecache option is used */
#define SHFLG_Lookaside      0x00000002 /* Lookaside memory is used */
#define SHFLG_Backslash      0x00000004 /* The --backslash option is used */







|







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*/
#define SHELL_OPEN_UNSPEC      0      /* No open-mode specified */
#define SHELL_OPEN_NORMAL      1      /* Normal database file */
#define SHELL_OPEN_APPENDVFS   2      /* Use appendvfs */
#define SHELL_OPEN_ZIPFILE     3      /* Use the zipfile virtual table */
#define SHELL_OPEN_READONLY    4      /* Open a normal database read-only */
#define SHELL_OPEN_DESERIALIZE 5      /* Open using sqlite3_deserialize() */
#define SHELL_OPEN_REUSESCHEMA 6      /* Open for schema reuse */

/*
** These are the allowed shellFlgs values
*/
#define SHFLG_Pagecache      0x00000001 /* The --pagecache option is used */
#define SHFLG_Lookaside      0x00000002 /* Lookaside memory is used */
#define SHFLG_Backslash      0x00000004 /* The --backslash option is used */

Changes to src/sqliteInt.h.

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** parameters that may or may not be used depending on compilation options.
** For example those parameters only used in assert() statements. In these
** cases the parameters are named as per the usual conventions.
*/
#define UNUSED_PARAMETER(x) (void)(x)
#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y)






/*
** Forward references to structures
*/
typedef struct AggInfo AggInfo;
typedef struct AuthContext AuthContext;
typedef struct AutoincInfo AutoincInfo;
typedef struct Bitvec Bitvec;
................................................................................
** accessed (or set to 0 for triggers fired as a result of INSERT
** statements). Similarly, the TriggerPrg.aColmask[1] variable is set to
** a mask of new.* columns used by the program.
*/
struct TriggerPrg {
  Trigger *pTrigger;      /* Trigger this program was coded from */
  TriggerPrg *pNext;      /* Next entry in Parse.pTriggerPrg list */

  SubProgram *pProgram;   /* Program implementing pTrigger/orconf */
  int orconf;             /* Default ON CONFLICT policy */
  u32 aColmask[2];        /* Masks of old.*, new.* columns accessed */
};

/*
** The yDbMask datatype for the bitmask of all attached databases.
................................................................................
  Table *pZombieTab;        /* List of Table objects to delete after code gen */
  TriggerPrg *pTriggerPrg;  /* Linked list of coded triggers */
  With *pWith;              /* Current WITH clause, or NULL */
  With *pWithToFree;        /* Free this WITH object at the end of the parse */
#ifndef SQLITE_OMIT_ALTERTABLE
  RenameToken *pRename;     /* Tokens subject to renaming by ALTER TABLE */
#endif

};

#define PARSE_MODE_NORMAL        0
#define PARSE_MODE_DECLARE_VTAB  1
#define PARSE_MODE_RENAME_COLUMN 2
#define PARSE_MODE_RENAME_TABLE  3

................................................................................
int sqlite3ExprCanBeNull(const Expr*);
int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
int sqlite3IsRowid(const char*);
#ifdef SQLITE_ENABLE_NORMALIZE
int sqlite3IsRowidN(const char*, int);
#endif
void sqlite3GenerateRowDelete(
    Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
void sqlite3ResolvePartIdxLabel(Parse*,int);
int sqlite3ExprReferencesUpdatedColumn(Expr*,int*,int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*,int*,Upsert*);
#ifdef SQLITE_ENABLE_NULL_TRIM
  void sqlite3SetMakeRecordP5(Vdbe*,Table*);
#else
# define sqlite3SetMakeRecordP5(A,B)
#endif
void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*);
void sqlite3BeginWriteOperation(Parse*, int, int);
void sqlite3MultiWrite(Parse*);
void sqlite3MayAbort(Parse*);
void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8);
void sqlite3UniqueConstraint(Parse*, int, Index*);
void sqlite3RowidConstraint(Parse*, int, Table*);
Expr *sqlite3ExprDup(sqlite3*,Expr*,int);
................................................................................
void sqlite3RegisterDateTimeFunctions(void);
void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*);
int sqlite3SafetyCheckOk(sqlite3*);
int sqlite3SafetyCheckSickOrOk(sqlite3*);
void sqlite3ChangeCookie(Parse*, int);

#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
void sqlite3MaterializeView(Parse*, Table*, Expr*, ExprList*,Expr*,int);
#endif

#ifndef SQLITE_OMIT_TRIGGER
  void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
                           Expr*,int, int);
  void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
  void sqlite3DropTrigger(Parse*, SrcList*, int);
  void sqlite3DropTriggerPtr(Parse*, Trigger*);
  Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
  Trigger *sqlite3TriggerList(Parse *, Table *);
  void sqlite3CodeRowTrigger(Parse*, Trigger *, int, ExprList*, int, Table *,
                            int, int, int);
  void sqlite3CodeRowTriggerDirect(Parse *, Trigger *, Table *, int, int, int);
  void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
  void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
  TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*,
                                        Select*,u8,Upsert*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,ExprList*, Expr*, u8,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*,
                                        const char*,const char*);
  void sqlite3DeleteTrigger(sqlite3*, Trigger*);
  void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
  u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
# define sqlite3IsToplevel(p) ((p)->pToplevel==0)
#else
# define sqlite3TriggersExist(B,C,D,E,F) 0
# define sqlite3DeleteTrigger(A,B)
# define sqlite3DropTriggerPtr(A,B)
# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I)
# define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F)
# define sqlite3TriggerList(X, Y) 0
# define sqlite3ParseToplevel(p) p
# define sqlite3IsToplevel(p) 1
# define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0
#endif

int sqlite3JoinType(Parse*, Token*, Token*, Token*);
void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
void sqlite3DeferForeignKey(Parse*, int);
#ifndef SQLITE_OMIT_AUTHORIZATION
  void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
................................................................................
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
void sqlite3SchemaClear(void *);
void sqlite3SchemaUnuse(sqlite3*, int);
void sqlite3SchemaReuse(sqlite3*, int);
void sqlite3SchemaWritable(Parse*, int);
Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
int sqlite3SchemaToIndex(sqlite3 *db, Schema *);

KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
void sqlite3KeyInfoUnref(KeyInfo*);
KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int);

#ifdef SQLITE_DEBUG
................................................................................
** OMIT_FOREIGN_KEY is not, only some of the functions are no-oped. In
** this case foreign keys are parsed, but no other functionality is
** provided (enforcement of FK constraints requires the triggers sub-system).
*/
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
  void sqlite3FkCheck(Parse*, Table*, int, int, int*, int);
  void sqlite3FkDropTable(Parse*, SrcList *, Table*);
  void sqlite3FkActions(Parse*, Table*, ExprList*, int, int*, int);
  int sqlite3FkRequired(Parse*, Table*, int*, int);
  u32 sqlite3FkOldmask(Parse*, Table*);
  FKey *sqlite3FkReferences(Table *);
#else
  #define sqlite3FkActions(a,b,c,d,e,f)
  #define sqlite3FkCheck(a,b,c,d,e,f)
  #define sqlite3FkDropTable(a,b,c)
  #define sqlite3FkOldmask(a,b)         0
  #define sqlite3FkRequired(a,b,c,d)    0
  #define sqlite3FkReferences(a)        0
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY







>
>
>
>
>







 







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** parameters that may or may not be used depending on compilation options.
** For example those parameters only used in assert() statements. In these
** cases the parameters are named as per the usual conventions.
*/
#define UNUSED_PARAMETER(x) (void)(x)
#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y)

/*
** The static mutex with which to protect reusable schemas.
*/
#define SQLITE_MUTEX_SCHEMA_REUSE SQLITE_MUTEX_STATIC_APP1

/*
** Forward references to structures
*/
typedef struct AggInfo AggInfo;
typedef struct AuthContext AuthContext;
typedef struct AutoincInfo AutoincInfo;
typedef struct Bitvec Bitvec;
................................................................................
** accessed (or set to 0 for triggers fired as a result of INSERT
** statements). Similarly, the TriggerPrg.aColmask[1] variable is set to
** a mask of new.* columns used by the program.
*/
struct TriggerPrg {
  Trigger *pTrigger;      /* Trigger this program was coded from */
  TriggerPrg *pNext;      /* Next entry in Parse.pTriggerPrg list */
  int iFixDb;             /* Value of Parse.iFixDb when this was coded */
  SubProgram *pProgram;   /* Program implementing pTrigger/orconf */
  int orconf;             /* Default ON CONFLICT policy */
  u32 aColmask[2];        /* Masks of old.*, new.* columns accessed */
};

/*
** The yDbMask datatype for the bitmask of all attached databases.
................................................................................
  Table *pZombieTab;        /* List of Table objects to delete after code gen */
  TriggerPrg *pTriggerPrg;  /* Linked list of coded triggers */
  With *pWith;              /* Current WITH clause, or NULL */
  With *pWithToFree;        /* Free this WITH object at the end of the parse */
#ifndef SQLITE_OMIT_ALTERTABLE
  RenameToken *pRename;     /* Tokens subject to renaming by ALTER TABLE */
#endif
  int iFixDb;
};

#define PARSE_MODE_NORMAL        0
#define PARSE_MODE_DECLARE_VTAB  1
#define PARSE_MODE_RENAME_COLUMN 2
#define PARSE_MODE_RENAME_TABLE  3

................................................................................
int sqlite3ExprCanBeNull(const Expr*);
int sqlite3ExprNeedsNoAffinityChange(const Expr*, char);
int sqlite3IsRowid(const char*);
#ifdef SQLITE_ENABLE_NORMALIZE
int sqlite3IsRowidN(const char*, int);
#endif
void sqlite3GenerateRowDelete(
    Parse*,int,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
void sqlite3ResolvePartIdxLabel(Parse*,int);
int sqlite3ExprReferencesUpdatedColumn(Expr*,int*,int);
void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*,int*,Upsert*);
#ifdef SQLITE_ENABLE_NULL_TRIM
  void sqlite3SetMakeRecordP5(Vdbe*,Table*);
#else
# define sqlite3SetMakeRecordP5(A,B)
#endif
void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
int sqlite3OpenTableAndIndices(Parse*, int, Table*, int, u8, int,u8*,int*,int*);
void sqlite3BeginWriteOperation(Parse*, int, int);
void sqlite3MultiWrite(Parse*);
void sqlite3MayAbort(Parse*);
void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8);
void sqlite3UniqueConstraint(Parse*, int, Index*);
void sqlite3RowidConstraint(Parse*, int, Table*);
Expr *sqlite3ExprDup(sqlite3*,Expr*,int);
................................................................................
void sqlite3RegisterDateTimeFunctions(void);
void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*);
int sqlite3SafetyCheckOk(sqlite3*);
int sqlite3SafetyCheckSickOrOk(sqlite3*);
void sqlite3ChangeCookie(Parse*, int);

#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
void sqlite3MaterializeView(Parse*, int, Table*, Expr*, ExprList*,Expr*,int);
#endif

#ifndef SQLITE_OMIT_TRIGGER
  void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
                           Expr*,int, int);
  void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
  void sqlite3DropTrigger(Parse*, SrcList*, int);
  void sqlite3DropTriggerPtr(Parse*, Trigger*);
  Trigger *sqlite3TriggersExist(Parse *, Table*, int, ExprList*, int *pMask);
  Trigger *sqlite3TriggerList(Parse *, Table *);
  void sqlite3CodeRowTrigger(Parse*, int, Trigger *, int, ExprList*, int, 
                             Table *, int, int, int);
  void sqlite3CodeRowTriggerDirect(Parse*, int, Trigger*, Table*, int, int,int);
  void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
  void sqlite3DeleteTriggerStep(sqlite3*, TriggerStep*);
  TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*,
                                        Select*,u8,Upsert*,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,ExprList*, Expr*, u8,
                                        const char*,const char*);
  TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*,
                                        const char*,const char*);
  void sqlite3DeleteTrigger(sqlite3*, Trigger*);
  void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
  u32 sqlite3TriggerColmask(Parse*,int,Trigger*,ExprList*,int,int,Table*,int);
# define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
# define sqlite3IsToplevel(p) ((p)->pToplevel==0)
#else
# define sqlite3TriggersExist(B,C,D,E,F) 0
# define sqlite3DeleteTrigger(A,B)
# define sqlite3DropTriggerPtr(A,B)
# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I,J)
# define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F,G)
# define sqlite3TriggerList(X, Y) 0
# define sqlite3ParseToplevel(p) p
# define sqlite3IsToplevel(p) 1
# define sqlite3TriggerColmask(A,B,C,D,E,F,G,H) 0
#endif

int sqlite3JoinType(Parse*, Token*, Token*, Token*);
void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
void sqlite3DeferForeignKey(Parse*, int);
#ifndef SQLITE_OMIT_AUTHORIZATION
  void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
................................................................................
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
void sqlite3SchemaClear(void *);
void sqlite3SchemaUnuse(sqlite3*, int);
void sqlite3SchemaReuse(sqlite3*, int);
void sqlite3SchemaWritable(Parse*, int);
Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
int sqlite3SchemaToIndex2(sqlite3 *db, Schema *, const char*);
KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
void sqlite3KeyInfoUnref(KeyInfo*);
KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
KeyInfo *sqlite3KeyInfoFromExprList(Parse*, ExprList*, int, int);

#ifdef SQLITE_DEBUG
................................................................................
** OMIT_FOREIGN_KEY is not, only some of the functions are no-oped. In
** this case foreign keys are parsed, but no other functionality is
** provided (enforcement of FK constraints requires the triggers sub-system).
*/
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
  void sqlite3FkCheck(Parse*, Table*, int, int, int*, int);
  void sqlite3FkDropTable(Parse*, SrcList *, Table*);
  void sqlite3FkActions(Parse*, int, Table*, ExprList*, int, int*, int);
  int sqlite3FkRequired(Parse*, Table*, int*, int);
  u32 sqlite3FkOldmask(Parse*, Table*);
  FKey *sqlite3FkReferences(Table *);
#else
  #define sqlite3FkActions(a,b,c,d,e,f,g)
  #define sqlite3FkCheck(a,b,c,d,e,f)
  #define sqlite3FkDropTable(a,b,c)
  #define sqlite3FkOldmask(a,b)         0
  #define sqlite3FkRequired(a,b,c,d)    0
  #define sqlite3FkReferences(a)        0
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY

Changes to src/trigger.c.

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** wants.
*/
static SrcList *targetSrcList(
  Parse *pParse,       /* The parsing context */
  TriggerStep *pStep   /* The trigger containing the target token */
){
  sqlite3 *db = pParse->db;
  int iDb;             /* Index of the database to use */
  SrcList *pSrc;       /* SrcList to be returned */

  pSrc = sqlite3SrcListAppend(db, 0, 0, 0);
  if( pSrc ){
    assert( pSrc->nSrc>0 );
    pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget);
    iDb = sqlite3SchemaToIndex(db, pStep->pTrig->pSchema);
    if( iDb==0 || iDb>=2 ){
      const char *zDb;
      assert( iDb<db->nDb );
      zDb = db->aDb[iDb].zDbSName;
      pSrc->a[pSrc->nSrc-1].zDatabase =  sqlite3DbStrDup(db, zDb);
    }
  }
  return pSrc;
}

/*
** Generate VDBE code for the statements inside the body of a single 
** trigger.
................................................................................
  pPrg->pProgram = pProgram = sqlite3DbMallocZero(db, sizeof(SubProgram));
  if( !pProgram ) return 0;
  sqlite3VdbeLinkSubProgram(pTop->pVdbe, pProgram);
  pPrg->pTrigger = pTrigger;
  pPrg->orconf = orconf;
  pPrg->aColmask[0] = 0xffffffff;
  pPrg->aColmask[1] = 0xffffffff;


  /* Allocate and populate a new Parse context to use for coding the 
  ** trigger sub-program.  */
  pSubParse = sqlite3StackAllocZero(db, sizeof(Parse));
  if( !pSubParse ) return 0;
  memset(&sNC, 0, sizeof(sNC));
  sNC.pParse = pSubParse;
  pSubParse->db = db;
  pSubParse->pTriggerTab = pTab;
  pSubParse->pToplevel = pTop;
  pSubParse->zAuthContext = pTrigger->zName;
  pSubParse->eTriggerOp = pTrigger->op;
  pSubParse->nQueryLoop = pParse->nQueryLoop;


  v = sqlite3GetVdbe(pSubParse);
  if( v ){
    VdbeComment((v, "Start: %s.%s (%s %s%s%s ON %s)", 
      pTrigger->zName, onErrorText(orconf),
      (pTrigger->tr_tm==TRIGGER_BEFORE ? "BEFORE" : "AFTER"),
        (pTrigger->op==TK_UPDATE ? "UPDATE" : ""),
        (pTrigger->op==TK_INSERT ? "INSERT" : ""),
        (pTrigger->op==TK_DELETE ? "DELETE" : ""),
      pTab->zName
    ));
#ifndef SQLITE_OMIT_TRACE
................................................................................
    transferParseError(pParse, pSubParse);
    if( db->mallocFailed==0 && pParse->nErr==0 ){
      pProgram->aOp = sqlite3VdbeTakeOpArray(v, &pProgram->nOp, &pTop->nMaxArg);
    }
    pProgram->nMem = pSubParse->nMem;
    pProgram->nCsr = pSubParse->nTab;
    pProgram->token = (void *)pTrigger;

    pPrg->aColmask[0] = pSubParse->oldmask;
    pPrg->aColmask[1] = pSubParse->newmask;
    sqlite3VdbeDelete(v);
  }

  assert( !pSubParse->pAinc       && !pSubParse->pZombieTab );
  assert( !pSubParse->pTriggerPrg && !pSubParse->nMaxArg );
................................................................................
** Return a pointer to a TriggerPrg object containing the sub-program for
** trigger pTrigger with default ON CONFLICT algorithm orconf. If no such
** TriggerPrg object exists, a new object is allocated and populated before
** being returned.
*/
static TriggerPrg *getRowTrigger(
  Parse *pParse,       /* Current parse context */

  Trigger *pTrigger,   /* Trigger to code */
  Table *pTab,         /* The table trigger pTrigger is attached to */
  int orconf           /* ON CONFLICT algorithm. */
){
  Parse *pRoot = sqlite3ParseToplevel(pParse);
  TriggerPrg *pPrg;



  assert( pTrigger->zName==0 || pTab==tableOfTrigger(pTrigger) );

  /* It may be that this trigger has already been coded (or is in the
  ** process of being coded). If this is the case, then an entry with
  ** a matching TriggerPrg.pTrigger field will be present somewhere
  ** in the Parse.pTriggerPrg list. Search for such an entry.  */
  for(pPrg=pRoot->pTriggerPrg; 
      pPrg && (pPrg->pTrigger!=pTrigger || pPrg->orconf!=orconf); 
      pPrg=pPrg->pNext
  );




  /* If an existing TriggerPrg could not be located, create a new one. */
  if( !pPrg ){
    pPrg = codeRowTrigger(pParse, pTrigger, pTab, orconf);
  }


  return pPrg;
}

/*
** Generate code for the trigger program associated with trigger p on 
** table pTab. The reg, orconf and ignoreJump parameters passed to this
** function are the same as those described in the header function for
** sqlite3CodeRowTrigger()
*/
void sqlite3CodeRowTriggerDirect(
  Parse *pParse,       /* Parse context */

  Trigger *p,          /* Trigger to code */
  Table *pTab,         /* The table to code triggers from */
  int reg,             /* Reg array containing OLD.* and NEW.* values */
  int orconf,          /* ON CONFLICT policy */
  int ignoreJump       /* Instruction to jump to for RAISE(IGNORE) */
){
  Vdbe *v = sqlite3GetVdbe(pParse); /* Main VM */
  TriggerPrg *pPrg;

  pPrg = getRowTrigger(pParse, p, pTab, orconf);
  assert( pPrg || pParse->nErr || pParse->db->mallocFailed );

  /* Code the OP_Program opcode in the parent VDBE. P4 of the OP_Program 
  ** is a pointer to the sub-vdbe containing the trigger program.  */
  if( pPrg ){
    int bRecursive = (p->zName && 0==(pParse->db->flags&SQLITE_RecTriggers));

    sqlite3VdbeAddOp4(v, OP_Program, reg, ignoreJump, ++pParse->nMem,
                      (const char *)pPrg->pProgram, P4_SUBPROGRAM);
    VdbeComment(
        (v, "Call: %s.%s", (p->zName?p->zName:"fkey"), onErrorText(orconf)));


    /* Set the P5 operand of the OP_Program instruction to non-zero if
    ** recursive invocation of this trigger program is disallowed. Recursive
    ** invocation is disallowed if (a) the sub-program is really a trigger,
    ** not a foreign key action, and (b) the flag to enable recursive triggers
    ** is clear.  */
    sqlite3VdbeChangeP5(v, (u8)bRecursive);
................................................................................
** Parameter orconf is the default conflict resolution algorithm for the
** trigger program to use (REPLACE, IGNORE etc.). Parameter ignoreJump
** is the instruction that control should jump to if a trigger program
** raises an IGNORE exception.
*/
void sqlite3CodeRowTrigger(
  Parse *pParse,       /* Parse context */

  Trigger *pTrigger,   /* List of triggers on table pTab */
  int op,              /* One of TK_UPDATE, TK_INSERT, TK_DELETE */
  ExprList *pChanges,  /* Changes list for any UPDATE OF triggers */
  int tr_tm,           /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
  Table *pTab,         /* The table to code triggers from */
  int reg,             /* The first in an array of registers (see above) */
  int orconf,          /* ON CONFLICT policy */
................................................................................
         || p->pSchema==pParse->db->aDb[1].pSchema );

    /* Determine whether we should code this trigger */
    if( p->op==op 
     && p->tr_tm==tr_tm 
     && checkColumnOverlap(p->pColumns, pChanges)
    ){
      sqlite3CodeRowTriggerDirect(pParse, p, pTab, reg, orconf, ignoreJump);
    }
  }
}

/*
** Triggers may access values stored in the old.* or new.* pseudo-table. 
** This function returns a 32-bit bitmask indicating which columns of the 
................................................................................
** and TRIGGER_AFTER bits set. Values accessed by BEFORE triggers are only
** included in the returned mask if the TRIGGER_BEFORE bit is set in the
** tr_tm parameter. Similarly, values accessed by AFTER triggers are only
** included in the returned mask if the TRIGGER_AFTER bit is set in tr_tm.
*/
u32 sqlite3TriggerColmask(
  Parse *pParse,       /* Parse context */

  Trigger *pTrigger,   /* List of triggers on table pTab */
  ExprList *pChanges,  /* Changes list for any UPDATE OF triggers */
  int isNew,           /* 1 for new.* ref mask, 0 for old.* ref mask */
  int tr_tm,           /* Mask of TRIGGER_BEFORE|TRIGGER_AFTER */
  Table *pTab,         /* The table to code triggers from */
  int orconf           /* Default ON CONFLICT policy for trigger steps */
){
................................................................................

  assert( isNew==1 || isNew==0 );
  for(p=pTrigger; p; p=p->pNext){
    if( p->op==op && (tr_tm&p->tr_tm)
     && checkColumnOverlap(p->pColumns,pChanges)
    ){
      TriggerPrg *pPrg;
      pPrg = getRowTrigger(pParse, p, pTab, orconf);
      if( pPrg ){
        mask |= pPrg->aColmask[isNew];
      }
    }
  }

  return mask;
}

#endif /* !defined(SQLITE_OMIT_TRIGGER) */







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** wants.
*/
static SrcList *targetSrcList(
  Parse *pParse,       /* The parsing context */
  TriggerStep *pStep   /* The trigger containing the target token */
){
  sqlite3 *db = pParse->db;

  SrcList *pSrc;       /* SrcList to be returned */

  pSrc = sqlite3SrcListAppend(db, 0, 0, 0);
  if( pSrc ){
    assert( pSrc->nSrc>0 );
    pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget);







  }
  return pSrc;
}

/*
** Generate VDBE code for the statements inside the body of a single 
** trigger.
................................................................................
  pPrg->pProgram = pProgram = sqlite3DbMallocZero(db, sizeof(SubProgram));
  if( !pProgram ) return 0;
  sqlite3VdbeLinkSubProgram(pTop->pVdbe, pProgram);
  pPrg->pTrigger = pTrigger;
  pPrg->orconf = orconf;
  pPrg->aColmask[0] = 0xffffffff;
  pPrg->aColmask[1] = 0xffffffff;
  pPrg->iFixDb = pParse->iFixDb;

  /* Allocate and populate a new Parse context to use for coding the 
  ** trigger sub-program.  */
  pSubParse = sqlite3StackAllocZero(db, sizeof(Parse));
  if( !pSubParse ) return 0;
  memset(&sNC, 0, sizeof(sNC));
  sNC.pParse = pSubParse;
  pSubParse->db = db;
  pSubParse->pTriggerTab = pTab;
  pSubParse->pToplevel = pTop;
  pSubParse->zAuthContext = pTrigger->zName;
  pSubParse->eTriggerOp = pTrigger->op;
  pSubParse->nQueryLoop = pParse->nQueryLoop;
  pSubParse->iFixDb = pParse->iFixDb;

  v = sqlite3GetVdbe(pSubParse);
  if( v ){
    VdbeComment((v, "Start: %s.%s (%d) (%s %s%s%s ON %s)", 
      pTrigger->zName, onErrorText(orconf), pParse->iFixDb-1,
      (pTrigger->tr_tm==TRIGGER_BEFORE ? "BEFORE" : "AFTER"),
        (pTrigger->op==TK_UPDATE ? "UPDATE" : ""),
        (pTrigger->op==TK_INSERT ? "INSERT" : ""),
        (pTrigger->op==TK_DELETE ? "DELETE" : ""),
      pTab->zName
    ));
#ifndef SQLITE_OMIT_TRACE
................................................................................
    transferParseError(pParse, pSubParse);
    if( db->mallocFailed==0 && pParse->nErr==0 ){
      pProgram->aOp = sqlite3VdbeTakeOpArray(v, &pProgram->nOp, &pTop->nMaxArg);
    }
    pProgram->nMem = pSubParse->nMem;
    pProgram->nCsr = pSubParse->nTab;
    pProgram->token = (void *)pTrigger;
    pProgram->itoken = pParse->iFixDb;
    pPrg->aColmask[0] = pSubParse->oldmask;
    pPrg->aColmask[1] = pSubParse->newmask;
    sqlite3VdbeDelete(v);
  }

  assert( !pSubParse->pAinc       && !pSubParse->pZombieTab );
  assert( !pSubParse->pTriggerPrg && !pSubParse->nMaxArg );
................................................................................
** Return a pointer to a TriggerPrg object containing the sub-program for
** trigger pTrigger with default ON CONFLICT algorithm orconf. If no such
** TriggerPrg object exists, a new object is allocated and populated before
** being returned.
*/
static TriggerPrg *getRowTrigger(
  Parse *pParse,       /* Current parse context */
  int iDb,             /* Database containing pTab */
  Trigger *pTrigger,   /* Trigger to code */
  Table *pTab,         /* The table trigger pTrigger is attached to */
  int orconf           /* ON CONFLICT algorithm. */
){
  Parse *pRoot = sqlite3ParseToplevel(pParse);
  TriggerPrg *pPrg;
  int iFixDb = pParse->iFixDb;
  pParse->iFixDb = (pTrigger->pSchema==pRoot->db->aDb[1].pSchema)?0:(iDb+1);

  assert( pTrigger->zName==0 || pTab==tableOfTrigger(pTrigger) );

  /* It may be that this trigger has already been coded (or is in the
  ** process of being coded). If this is the case, then an entry with
  ** a matching TriggerPrg.pTrigger field will be present somewhere
  ** in the Parse.pTriggerPrg list. Search for such an entry.  */
  for(pPrg=pRoot->pTriggerPrg; pPrg; pPrg=pPrg->pNext){
    if( pPrg->pTrigger==pTrigger 
     && pPrg->orconf==orconf 

     && pParse->iFixDb==pPrg->iFixDb
    ) break;
  }

  /* If an existing TriggerPrg could not be located, create a new one. */
  if( !pPrg ){
    pPrg = codeRowTrigger(pParse, pTrigger, pTab, orconf);
  }

  pParse->iFixDb = iFixDb;
  return pPrg;
}

/*
** Generate code for the trigger program associated with trigger p on 
** table pTab. The reg, orconf and ignoreJump parameters passed to this
** function are the same as those described in the header function for
** sqlite3CodeRowTrigger()
*/
void sqlite3CodeRowTriggerDirect(
  Parse *pParse,       /* Parse context */
  int iDb,             /* Database containing pTrigger */
  Trigger *p,          /* Trigger to code */
  Table *pTab,         /* The table to code triggers from */
  int reg,             /* Reg array containing OLD.* and NEW.* values */
  int orconf,          /* ON CONFLICT policy */
  int ignoreJump       /* Instruction to jump to for RAISE(IGNORE) */
){
  Vdbe *v = sqlite3GetVdbe(pParse); /* Main VM */
  TriggerPrg *pPrg;

  pPrg = getRowTrigger(pParse, iDb, p, pTab, orconf);
  assert( pPrg || pParse->nErr || pParse->db->mallocFailed );

  /* Code the OP_Program opcode in the parent VDBE. P4 of the OP_Program 
  ** is a pointer to the sub-vdbe containing the trigger program.  */
  if( pPrg ){
    int bRecursive = (p->zName && 0==(pParse->db->flags&SQLITE_RecTriggers));

    sqlite3VdbeAddOp4(v, OP_Program, reg, ignoreJump, ++pParse->nMem,
                      (const char *)pPrg->pProgram, P4_SUBPROGRAM);
    VdbeComment((v, "Call: %s.%s (%d)", 
          (p->zName?p->zName:"fkey"), onErrorText(orconf), iDb
    ));

    /* Set the P5 operand of the OP_Program instruction to non-zero if
    ** recursive invocation of this trigger program is disallowed. Recursive
    ** invocation is disallowed if (a) the sub-program is really a trigger,
    ** not a foreign key action, and (b) the flag to enable recursive triggers
    ** is clear.  */
    sqlite3VdbeChangeP5(v, (u8)bRecursive);
................................................................................
** Parameter orconf is the default conflict resolution algorithm for the
** trigger program to use (REPLACE, IGNORE etc.). Parameter ignoreJump
** is the instruction that control should jump to if a trigger program
** raises an IGNORE exception.
*/
void sqlite3CodeRowTrigger(
  Parse *pParse,       /* Parse context */
  int iDb,
  Trigger *pTrigger,   /* List of triggers on table pTab */
  int op,              /* One of TK_UPDATE, TK_INSERT, TK_DELETE */
  ExprList *pChanges,  /* Changes list for any UPDATE OF triggers */
  int tr_tm,           /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
  Table *pTab,         /* The table to code triggers from */
  int reg,             /* The first in an array of registers (see above) */
  int orconf,          /* ON CONFLICT policy */
................................................................................
         || p->pSchema==pParse->db->aDb[1].pSchema );

    /* Determine whether we should code this trigger */
    if( p->op==op 
     && p->tr_tm==tr_tm 
     && checkColumnOverlap(p->pColumns, pChanges)
    ){
      sqlite3CodeRowTriggerDirect(pParse, iDb, p, pTab, reg, orconf,ignoreJump);
    }
  }
}

/*
** Triggers may access values stored in the old.* or new.* pseudo-table. 
** This function returns a 32-bit bitmask indicating which columns of the 
................................................................................
** and TRIGGER_AFTER bits set. Values accessed by BEFORE triggers are only
** included in the returned mask if the TRIGGER_BEFORE bit is set in the
** tr_tm parameter. Similarly, values accessed by AFTER triggers are only
** included in the returned mask if the TRIGGER_AFTER bit is set in tr_tm.
*/
u32 sqlite3TriggerColmask(
  Parse *pParse,       /* Parse context */
  int iDb,
  Trigger *pTrigger,   /* List of triggers on table pTab */
  ExprList *pChanges,  /* Changes list for any UPDATE OF triggers */
  int isNew,           /* 1 for new.* ref mask, 0 for old.* ref mask */
  int tr_tm,           /* Mask of TRIGGER_BEFORE|TRIGGER_AFTER */
  Table *pTab,         /* The table to code triggers from */
  int orconf           /* Default ON CONFLICT policy for trigger steps */
){
................................................................................

  assert( isNew==1 || isNew==0 );
  for(p=pTrigger; p; p=p->pNext){
    if( p->op==op && (tr_tm&p->tr_tm)
     && checkColumnOverlap(p->pColumns,pChanges)
    ){
      TriggerPrg *pPrg;
      pPrg = getRowTrigger(pParse, iDb, p, pTab, orconf);
      if( pPrg ){
        mask |= pPrg->aColmask[isNew];
      }
    }
  }

  return mask;
}

#endif /* !defined(SQLITE_OMIT_TRIGGER) */

Changes to src/update.c.

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  }
  assert( pTabList->nSrc==1 );

  /* Locate the table which we want to update. 
  */
  pTab = sqlite3SrcListLookup(pParse, pTabList);
  if( pTab==0 ) goto update_cleanup;
  iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);

  /* Figure out if we have any triggers and if the table being
  ** updated is a view.
  */
#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite3TriggersExist(pParse, pTab, TK_UPDATE, pChanges, &tmask);
  isView = pTab->pSelect!=0;
................................................................................
  }

  /* If we are trying to update a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, pTab, 
        pWhere, pOrderBy, pLimit, iDataCur
    );
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

................................................................................
        if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iBaseCur] = 0;
        if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iBaseCur] = 0;
      }
  
      if( eOnePass==ONEPASS_MULTI && (nIdx-(aiCurOnePass[1]>=0))>0 ){
        addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
      }
      sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, iBaseCur,
                                 aToOpen, 0, 0);
      if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce);
    }
  
    /* Top of the update loop */
    if( eOnePass!=ONEPASS_OFF ){
      if( !isView && aiCurOnePass[0]!=iDataCur && aiCurOnePass[1]!=iDataCur ){
................................................................................
    sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); VdbeCoverage(v);
  }

  /* Compute the old pre-UPDATE content of the row being changed, if that
  ** information is needed */
  if( chngPk || hasFK || pTrigger ){
    u32 oldmask = (hasFK ? sqlite3FkOldmask(pParse, pTab) : 0);
    oldmask |= sqlite3TriggerColmask(pParse, 
        pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
    );
    for(i=0; i<pTab->nCol; i++){
      if( oldmask==0xffffffff
       || (i<32 && (oldmask & MASKBIT32(i))!=0)
       || (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0
      ){
................................................................................
  ** this UPDATE statement and (b) not accessed by new.* references. The
  ** values for registers not modified by the UPDATE must be reloaded from 
  ** the database after the BEFORE triggers are fired anyway (as the trigger 
  ** may have modified them). So not loading those that are not going to
  ** be used eliminates some redundant opcodes.
  */
  newmask = sqlite3TriggerColmask(
      pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError
  );
  for(i=0; i<pTab->nCol; i++){
    if( i==pTab->iPKey ){
      sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
    }else{
      j = aXRef[i];
      if( j>=0 ){
................................................................................
  }

  /* Fire any BEFORE UPDATE triggers. This happens before constraints are
  ** verified. One could argue that this is wrong.
  */
  if( tmask&TRIGGER_BEFORE ){
    sqlite3TableAffinity(v, pTab, regNew);
    sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, 
        TRIGGER_BEFORE, pTab, regOldRowid, onError, labelContinue);

    /* The row-trigger may have deleted the row being updated. In this
    ** case, jump to the next row. No updates or AFTER triggers are 
    ** required. This behavior - what happens when the row being updated
    ** is deleted or renamed by a BEFORE trigger - is left undefined in the
    ** documentation.
................................................................................
        0, 0
    );

    /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to
    ** handle rows (possibly in other tables) that refer via a foreign key
    ** to the row just updated. */ 
    if( hasFK ){
      sqlite3FkActions(pParse, pTab, pChanges, regOldRowid, aXRef, chngKey);
    }
  }

  /* Increment the row counter 
  */
  if( regRowCount ){
    sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1);
  }

  sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, 
      TRIGGER_AFTER, pTab, regOldRowid, onError, labelContinue);

  /* Repeat the above with the next record to be updated, until
  ** all record selected by the WHERE clause have been updated.
  */
  if( eOnePass==ONEPASS_SINGLE ){
    /* Nothing to do at end-of-loop for a single-pass */







|







 







|







 







|







 







|







 







|







 







|







 







|









|







207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
...
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
...
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
...
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
...
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
...
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
...
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
  }
  assert( pTabList->nSrc==1 );

  /* Locate the table which we want to update. 
  */
  pTab = sqlite3SrcListLookup(pParse, pTabList);
  if( pTab==0 ) goto update_cleanup;
  iDb = sqlite3SchemaToIndex2(db, pTab->pSchema, pTabList->a[0].zDatabase);

  /* Figure out if we have any triggers and if the table being
  ** updated is a view.
  */
#ifndef SQLITE_OMIT_TRIGGER
  pTrigger = sqlite3TriggersExist(pParse, pTab, TK_UPDATE, pChanges, &tmask);
  isView = pTab->pSelect!=0;
................................................................................
  }

  /* If we are trying to update a view, realize that view into
  ** an ephemeral table.
  */
#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
  if( isView ){
    sqlite3MaterializeView(pParse, iDb, pTab, 
        pWhere, pOrderBy, pLimit, iDataCur
    );
    pOrderBy = 0;
    pLimit = 0;
  }
#endif

................................................................................
        if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iBaseCur] = 0;
        if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iBaseCur] = 0;
      }
  
      if( eOnePass==ONEPASS_MULTI && (nIdx-(aiCurOnePass[1]>=0))>0 ){
        addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
      }
      sqlite3OpenTableAndIndices(pParse, iDb, pTab, OP_OpenWrite, 0, iBaseCur,
                                 aToOpen, 0, 0);
      if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce);
    }
  
    /* Top of the update loop */
    if( eOnePass!=ONEPASS_OFF ){
      if( !isView && aiCurOnePass[0]!=iDataCur && aiCurOnePass[1]!=iDataCur ){
................................................................................
    sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); VdbeCoverage(v);
  }

  /* Compute the old pre-UPDATE content of the row being changed, if that
  ** information is needed */
  if( chngPk || hasFK || pTrigger ){
    u32 oldmask = (hasFK ? sqlite3FkOldmask(pParse, pTab) : 0);
    oldmask |= sqlite3TriggerColmask(pParse, iDb,
        pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
    );
    for(i=0; i<pTab->nCol; i++){
      if( oldmask==0xffffffff
       || (i<32 && (oldmask & MASKBIT32(i))!=0)
       || (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0
      ){
................................................................................
  ** this UPDATE statement and (b) not accessed by new.* references. The
  ** values for registers not modified by the UPDATE must be reloaded from 
  ** the database after the BEFORE triggers are fired anyway (as the trigger 
  ** may have modified them). So not loading those that are not going to
  ** be used eliminates some redundant opcodes.
  */
  newmask = sqlite3TriggerColmask(
      pParse, iDb, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError
  );
  for(i=0; i<pTab->nCol; i++){
    if( i==pTab->iPKey ){
      sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
    }else{
      j = aXRef[i];
      if( j>=0 ){
................................................................................
  }

  /* Fire any BEFORE UPDATE triggers. This happens before constraints are
  ** verified. One could argue that this is wrong.
  */
  if( tmask&TRIGGER_BEFORE ){
    sqlite3TableAffinity(v, pTab, regNew);
    sqlite3CodeRowTrigger(pParse, iDb, pTrigger, TK_UPDATE, pChanges, 
        TRIGGER_BEFORE, pTab, regOldRowid, onError, labelContinue);

    /* The row-trigger may have deleted the row being updated. In this
    ** case, jump to the next row. No updates or AFTER triggers are 
    ** required. This behavior - what happens when the row being updated
    ** is deleted or renamed by a BEFORE trigger - is left undefined in the
    ** documentation.
................................................................................
        0, 0
    );

    /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to
    ** handle rows (possibly in other tables) that refer via a foreign key
    ** to the row just updated. */ 
    if( hasFK ){
      sqlite3FkActions(pParse, iDb, pTab, pChanges, regOldRowid, aXRef,chngKey);
    }
  }

  /* Increment the row counter 
  */
  if( regRowCount ){
    sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1);
  }

  sqlite3CodeRowTrigger(pParse, iDb, pTrigger, TK_UPDATE, pChanges, 
      TRIGGER_AFTER, pTab, regOldRowid, onError, labelContinue);

  /* Repeat the above with the next record to be updated, until
  ** all record selected by the WHERE clause have been updated.
  */
  if( eOnePass==ONEPASS_SINGLE ){
    /* Nothing to do at end-of-loop for a single-pass */

Changes to src/vdbe.c.

6034
6035
6036
6037
6038
6039
6040

6041
6042
6043
6044
6045
6046
6047
....
6052
6053
6054
6055
6056
6057
6058



6059
6060
6061
6062
6063
6064
6065
6066
....
6100
6101
6102
6103
6104
6105
6106

6107
6108
6109
6110
6111
6112
6113
  int nByte;              /* Bytes of runtime space required for sub-program */
  Mem *pRt;               /* Register to allocate runtime space */
  Mem *pMem;              /* Used to iterate through memory cells */
  Mem *pEnd;              /* Last memory cell in new array */
  VdbeFrame *pFrame;      /* New vdbe frame to execute in */
  SubProgram *pProgram;   /* Sub-program to execute */
  void *t;                /* Token identifying trigger */


  pProgram = pOp->p4.pProgram;
  pRt = &aMem[pOp->p3];
  assert( pProgram->nOp>0 );
  
  /* If the p5 flag is clear, then recursive invocation of triggers is 
  ** disabled for backwards compatibility (p5 is set if this sub-program
................................................................................
  ** disabled. In some cases a single trigger may generate more than one 
  ** SubProgram (if the trigger may be executed with more than one different 
  ** ON CONFLICT algorithm). SubProgram structures associated with a
  ** single trigger all have the same value for the SubProgram.token 
  ** variable.  */
  if( pOp->p5 ){
    t = pProgram->token;



    for(pFrame=p->pFrame; pFrame && pFrame->token!=t; pFrame=pFrame->pParent);
    if( pFrame ) break;
  }

  if( p->nFrame>=db->aLimit[SQLITE_LIMIT_TRIGGER_DEPTH] ){
    rc = SQLITE_ERROR;
    sqlite3VdbeError(p, "too many levels of trigger recursion");
    goto abort_due_to_error;
................................................................................
    pFrame->aMem = p->aMem;
    pFrame->nMem = p->nMem;
    pFrame->apCsr = p->apCsr;
    pFrame->nCursor = p->nCursor;
    pFrame->aOp = p->aOp;
    pFrame->nOp = p->nOp;
    pFrame->token = pProgram->token;

#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
    pFrame->anExec = p->anExec;
#endif
#ifdef SQLITE_DEBUG
    pFrame->iFrameMagic = SQLITE_FRAME_MAGIC;
#endif








>







 







>
>
>
|







 







>







6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
....
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
....
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
  int nByte;              /* Bytes of runtime space required for sub-program */
  Mem *pRt;               /* Register to allocate runtime space */
  Mem *pMem;              /* Used to iterate through memory cells */
  Mem *pEnd;              /* Last memory cell in new array */
  VdbeFrame *pFrame;      /* New vdbe frame to execute in */
  SubProgram *pProgram;   /* Sub-program to execute */
  void *t;                /* Token identifying trigger */
  int i;                  /* Second part of token identifying trigger */

  pProgram = pOp->p4.pProgram;
  pRt = &aMem[pOp->p3];
  assert( pProgram->nOp>0 );
  
  /* If the p5 flag is clear, then recursive invocation of triggers is 
  ** disabled for backwards compatibility (p5 is set if this sub-program
................................................................................
  ** disabled. In some cases a single trigger may generate more than one 
  ** SubProgram (if the trigger may be executed with more than one different 
  ** ON CONFLICT algorithm). SubProgram structures associated with a
  ** single trigger all have the same value for the SubProgram.token 
  ** variable.  */
  if( pOp->p5 ){
    t = pProgram->token;
    i = pProgram->itoken;
    for(pFrame=p->pFrame; 
        pFrame && (pFrame->token!=t || pFrame->itoken!=i); 
        pFrame=pFrame->pParent);
    if( pFrame ) break;
  }

  if( p->nFrame>=db->aLimit[SQLITE_LIMIT_TRIGGER_DEPTH] ){
    rc = SQLITE_ERROR;
    sqlite3VdbeError(p, "too many levels of trigger recursion");
    goto abort_due_to_error;
................................................................................
    pFrame->aMem = p->aMem;
    pFrame->nMem = p->nMem;
    pFrame->apCsr = p->apCsr;
    pFrame->nCursor = p->nCursor;
    pFrame->aOp = p->aOp;
    pFrame->nOp = p->nOp;
    pFrame->token = pProgram->token;
    pFrame->itoken = pProgram->itoken;
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
    pFrame->anExec = p->anExec;
#endif
#ifdef SQLITE_DEBUG
    pFrame->iFrameMagic = SQLITE_FRAME_MAGIC;
#endif

Changes to src/vdbe.h.

86
87
88
89
90
91
92

93
94
95
96
97
98
99
struct SubProgram {
  VdbeOp *aOp;                  /* Array of opcodes for sub-program */
  int nOp;                      /* Elements in aOp[] */
  int nMem;                     /* Number of memory cells required */
  int nCsr;                     /* Number of cursors required */
  u8 *aOnce;                    /* Array of OP_Once flags */
  void *token;                  /* id that may be used to recursive triggers */

  SubProgram *pNext;            /* Next sub-program already visited */
};

/*
** A smaller version of VdbeOp used for the VdbeAddOpList() function because
** it takes up less space.
*/







>







86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
struct SubProgram {
  VdbeOp *aOp;                  /* Array of opcodes for sub-program */
  int nOp;                      /* Elements in aOp[] */
  int nMem;                     /* Number of memory cells required */
  int nCsr;                     /* Number of cursors required */
  u8 *aOnce;                    /* Array of OP_Once flags */
  void *token;                  /* id that may be used to recursive triggers */
  int itoken;                   /* Second part of id to identify rec. trig. */
  SubProgram *pNext;            /* Next sub-program already visited */
};

/*
** A smaller version of VdbeOp used for the VdbeAddOpList() function because
** it takes up less space.
*/

Changes to src/vdbeInt.h.

163
164
165
166
167
168
169

170
171
172
173
174
175
176
  VdbeFrame *pParent;     /* Parent of this frame, or NULL if parent is main */
  Op *aOp;                /* Program instructions for parent frame */
  i64 *anExec;            /* Event counters from parent frame */
  Mem *aMem;              /* Array of memory cells for parent frame */
  VdbeCursor **apCsr;     /* Array of Vdbe cursors for parent frame */
  u8 *aOnce;              /* Bitmask used by OP_Once */
  void *token;            /* Copy of SubProgram.token */

  i64 lastRowid;          /* Last insert rowid (sqlite3.lastRowid) */
  AuxData *pAuxData;      /* Linked list of auxdata allocations */
#if SQLITE_DEBUG
  u32 iFrameMagic;        /* magic number for sanity checking */
#endif
  int nCursor;            /* Number of entries in apCsr */
  int pc;                 /* Program Counter in parent (calling) frame */







>







163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
  VdbeFrame *pParent;     /* Parent of this frame, or NULL if parent is main */
  Op *aOp;                /* Program instructions for parent frame */
  i64 *anExec;            /* Event counters from parent frame */
  Mem *aMem;              /* Array of memory cells for parent frame */
  VdbeCursor **apCsr;     /* Array of Vdbe cursors for parent frame */
  u8 *aOnce;              /* Bitmask used by OP_Once */
  void *token;            /* Copy of SubProgram.token */
  int itoken;             /* Copy of SubProgram.itoken */
  i64 lastRowid;          /* Last insert rowid (sqlite3.lastRowid) */
  AuxData *pAuxData;      /* Linked list of auxdata allocations */
#if SQLITE_DEBUG
  u32 iFrameMagic;        /* magic number for sanity checking */
#endif
  int nCursor;            /* Number of entries in apCsr */
  int pc;                 /* Program Counter in parent (calling) frame */

Changes to src/where.c.

4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
  for(ii=0, pLevel=pWInfo->a; ii<nTabList; ii++, pLevel++){
    Table *pTab;     /* Table to open */
    int iDb;         /* Index of database containing table/index */
    struct SrcList_item *pTabItem;

    pTabItem = &pTabList->a[pLevel->iFrom];
    pTab = pTabItem->pTab;
    iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
    pLoop = pLevel->pWLoop;
    if( (pTab->tabFlags & TF_Ephemeral)!=0 || pTab->pSelect ){
      /* Do nothing */
    }else
#ifndef SQLITE_OMIT_VIRTUALTABLE
    if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)!=0 ){
      const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);







|







4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
  for(ii=0, pLevel=pWInfo->a; ii<nTabList; ii++, pLevel++){
    Table *pTab;     /* Table to open */
    int iDb;         /* Index of database containing table/index */
    struct SrcList_item *pTabItem;

    pTabItem = &pTabList->a[pLevel->iFrom];
    pTab = pTabItem->pTab;
    iDb = sqlite3SchemaToIndex2(db, pTab->pSchema, pTabItem->zDatabase);
    pLoop = pLevel->pWLoop;
    if( (pTab->tabFlags & TF_Ephemeral)!=0 || pTab->pSelect ){
      /* Do nothing */
    }else
#ifndef SQLITE_OMIT_VIRTUALTABLE
    if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)!=0 ){
      const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);

Changes to test/reuse1.test.

86
87
88
89
90
91
92
93











































































































94

  7  { DROP INDEX i1 }
  8  { DROP TABLE t1 }
  9  { DROP TRIGGER tr1 }
  10 { ANALYZE }
} {
  do_catchsql_test 1.5.$tn $sql {1 {attempt to modify read-only schema}}
}












































































































finish_test









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>
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
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151
152
153
154
155
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159
160
161
162
163
164
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173
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177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
  7  { DROP INDEX i1 }
  8  { DROP TABLE t1 }
  9  { DROP TRIGGER tr1 }
  10 { ANALYZE }
} {
  do_catchsql_test 1.5.$tn $sql {1 {attempt to modify read-only schema}}
}

#-------------------------------------------------------------------------
#
reset_db
forcedelete test.db2
ifcapable fts5 {
  do_execsql_test 2.0 {
    CREATE VIRTUAL TABLE ft USING fts5(a);
    INSERT INTO ft VALUES('one'), ('two'), ('three');
    ATTACH 'test.db2' AS aux;
    CREATE VIRTUAL TABLE aux.ft USING fts5(a);
    INSERT INTO aux.ft VALUES('aux1'), ('aux2'), ('aux3');
  }

  db close
  sqlite3 db  test.db -reuse-schema 1

  do_execsql_test 2.1 {
    ATTACH 'test.db2' AS aux;
    SELECT * FROM main.ft;
  } {one two three}

  do_execsql_test 2.2 {
    SELECT * FROM aux.ft;
  } {aux1 aux2 aux3}

  do_execsql_test 2.2 {
    SELECT * FROM aux.ft_content;
  } {1 aux1 2 aux2 3 aux3}
}

reset_db
forcedelete test.db2
do_execsql_test 3.0 {
  CREATE TABLE t1(a PRIMARY KEY, b, c);
  CREATE VIEW v1 AS SELECT * FROM t1;
  CREATE TRIGGER v1_ins INSTEAD OF INSERT ON v1 BEGIN
    INSERT INTO t1 VALUES(new.a, new.b, new.c);
  END;
  CREATE TRIGGER v1_del INSTEAD OF DELETE ON v1 BEGIN
    DELETE FROM t1 WHERE a=old.a;
  END;
  CREATE TRIGGER v1_up INSTEAD OF UPDATE ON v1 BEGIN
    UPDATE t1 SET a=new.a, b=new.b, c=new.c WHERE a=old.a;
  END;
}
forcecopy test.db test.db2

do_test 3.1 {
  sqlite3 db2 test.db2
  execsql { INSERT INTO t1 VALUES(1, 2, 3) } db
  execsql { INSERT INTO t1 VALUES(4, 5, 6) } db2
  db2 close
  execsql { ATTACH 'test.db2' AS aux; }
} {}

do_execsql_test 3.2 {
  SELECT * FROM main.v1;
} {1 2 3}

do_execsql_test 3.3 {
  SELECT * FROM aux.v1;
} {4 5 6}

db close
sqlite3 db test.db -reuse-schema 1

do_execsql_test 3.4 { ATTACH 'test.db2' AS aux } {}
do_execsql_test 3.5 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.6 { SELECT * FROM aux.v1  } {4 5 6}

do_execsql_test 3.7.1 { INSERT INTO aux.t1 VALUES(8, 9, 10); }
do_execsql_test 3.7.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.7.3 { SELECT * FROM aux.v1  } {4 5 6 8 9 10}

do_execsql_test 3.8.1 { DELETE FROM aux.t1 WHERE b=5 }
do_execsql_test 3.8.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.8.3 { SELECT * FROM aux.v1  } {8 9 10}

do_execsql_test 3.9.1 { UPDATE aux.t1 SET b='abc' }
do_execsql_test 3.9.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.9.3 { SELECT * FROM aux.v1  } {8 abc 10}

do_execsql_test 3.10.1 { INSERT INTO aux.v1 VALUES(11, 12, 13) }
do_execsql_test 3.10.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.10.3 { SELECT * FROM aux.v1  } {8 abc 10 11 12 13}

do_execsql_test 3.11.1 { DELETE FROM aux.v1 WHERE b='abc' }
do_execsql_test 3.11.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.11.3 { SELECT * FROM aux.v1  } {11 12 13}

do_execsql_test 3.12.1 { UPDATE aux.v1 SET b='def' }
do_execsql_test 3.12.2 { SELECT * FROM main.v1 } {1 2 3}
do_execsql_test 3.12.3 { SELECT * FROM aux.v1  } {11 def 13}

do_execsql_test 3.13.1 {
  CREATE TEMP TRIGGER xyz AFTER INSERT ON aux.t1 BEGIN
    INSERT INTO v1 VALUES(new.a, new.b, new.c);
  END;
}
do_execsql_test 3.13.2 {
  INSERT INTO aux.v1 VALUES('x', 'y', 'z');
}
do_execsql_test 3.13.3 {
  SELECT * FROM v1;
} {1 2 3 x y z}


finish_test