mirror of
https://github.com/php/php-src.git
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Update bundled library to version 2.8.2.
Make OnUpdateInt compatible with ZE2. Fix the makefile fragment for non-gnu makes
This commit is contained in:
Wez Furlong
parent
82a1818fde
commit
80e7f7001d
42 changed files with 11143 additions and 7558 deletions
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@ -18,81 +18,76 @@
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/*
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** Process an UPDATE statement.
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**
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** UPDATE OR IGNORE table_wxyz SET a=b, c=d WHERE e<5 AND f NOT NULL;
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** \_______/ \________/ \______/ \________________/
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* onError pTabList pChanges pWhere
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*/
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void sqliteUpdate(
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Parse *pParse, /* The parser context */
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Token *pTableName, /* The table in which we should change things */
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SrcList *pTabList, /* The table in which we should change things */
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ExprList *pChanges, /* Things to be changed */
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Expr *pWhere, /* The WHERE clause. May be null */
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int onError /* How to handle constraint errors */
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){
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int i, j; /* Loop counters */
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Table *pTab; /* The table to be updated */
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SrcList *pTabList = 0; /* Fake FROM clause containing only pTab */
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int addr; /* VDBE instruction address of the start of the loop */
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WhereInfo *pWInfo; /* Information about the WHERE clause */
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Vdbe *v; /* The virtual database engine */
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Index *pIdx; /* For looping over indices */
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int nIdx; /* Number of indices that need updating */
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int nIdxTotal; /* Total number of indices */
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int base; /* Index of first available table cursor */
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int iCur; /* VDBE Cursor number of pTab */
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sqlite *db; /* The database structure */
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Index **apIdx = 0; /* An array of indices that need updating too */
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char *aIdxUsed = 0; /* aIdxUsed[i] if the i-th index is used */
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char *aIdxUsed = 0; /* aIdxUsed[i]==1 if the i-th index is used */
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int *aXRef = 0; /* aXRef[i] is the index in pChanges->a[] of the
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** an expression for the i-th column of the table.
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** aXRef[i]==-1 if the i-th column is not changed. */
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int openOp; /* Opcode used to open tables */
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int chngRecno; /* True if the record number is being changed */
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Expr *pRecnoExpr; /* Expression defining the new record number */
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int openAll; /* True if all indices need to be opened */
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int isView; /* Trying to update a view */
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AuthContext sContext; /* The authorization context */
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int row_triggers_exist = 0;
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int before_triggers; /* True if there are any BEFORE triggers */
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int after_triggers; /* True if there are any AFTER triggers */
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int row_triggers_exist = 0; /* True if any row triggers exist */
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int newIdx = -1; /* index of trigger "new" temp table */
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int oldIdx = -1; /* index of trigger "old" temp table */
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sContext.pParse = 0;
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if( pParse->nErr || sqlite_malloc_failed ) goto update_cleanup;
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db = pParse->db;
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assert( pTabList->nSrc==1 );
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/* Check for the special case of a VIEW with one or more ON UPDATE triggers
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* defined
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*/
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{
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char *zTab = sqliteTableNameFromToken(pTableName);
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if( zTab != 0 ){
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pTab = sqliteFindTable(pParse->db, zTab);
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if( pTab ){
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row_triggers_exist =
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sqliteTriggersExist(pParse, pTab->pTrigger,
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TK_UPDATE, TK_BEFORE, TK_ROW, pChanges) ||
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sqliteTriggersExist(pParse, pTab->pTrigger,
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TK_UPDATE, TK_AFTER, TK_ROW, pChanges);
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}
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sqliteFree(zTab);
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if( row_triggers_exist && pTab->pSelect ){
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/* Just fire VIEW triggers */
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sqliteViewTriggers(pParse, pTab, pWhere, onError, pChanges);
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return;
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}
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/* Locate the table which we want to update.
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*/
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pTab = sqliteSrcListLookup(pParse, pTabList);
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if( pTab==0 ) goto update_cleanup;
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before_triggers = sqliteTriggersExist(pParse, pTab->pTrigger,
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TK_UPDATE, TK_BEFORE, TK_ROW, pChanges);
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after_triggers = sqliteTriggersExist(pParse, pTab->pTrigger,
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TK_UPDATE, TK_AFTER, TK_ROW, pChanges);
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row_triggers_exist = before_triggers || after_triggers;
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isView = pTab->pSelect!=0;
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if( sqliteIsReadOnly(pParse, pTab, before_triggers) ){
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goto update_cleanup;
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}
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if( isView ){
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if( sqliteViewGetColumnNames(pParse, pTab) ){
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goto update_cleanup;
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}
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}
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/* Locate the table which we want to update. This table has to be
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** put in an SrcList structure because some of the subroutines we
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** will be calling are designed to work with multiple tables and expect
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** an SrcList* parameter instead of just a Table* parameter.
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*/
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pTabList = sqliteTableTokenToSrcList(pParse, pTableName);
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if( pTabList==0 ) goto update_cleanup;
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pTab = pTabList->a[0].pTab;
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assert( pTab->pSelect==0 ); /* This table is not a VIEW */
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aXRef = sqliteMalloc( sizeof(int) * pTab->nCol );
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if( aXRef==0 ) goto update_cleanup;
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for(i=0; i<pTab->nCol; i++) aXRef[i] = -1;
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/* If there are FOR EACH ROW triggers, allocate temp tables */
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/* If there are FOR EACH ROW triggers, allocate cursors for the
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** special OLD and NEW tables
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*/
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if( row_triggers_exist ){
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newIdx = pParse->nTab++;
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oldIdx = pParse->nTab++;
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@ -103,28 +98,20 @@ void sqliteUpdate(
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** need to occur right after the database cursor. So go ahead and
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** allocate enough space, just in case.
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*/
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base = pParse->nTab++;
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pTabList->a[0].iCursor = iCur = pParse->nTab++;
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for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
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pParse->nTab++;
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}
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/* Resolve the column names in all the expressions in both the
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** WHERE clause and in the new values. Also find the column index
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/* Resolve the column names in all the expressions of the
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** of the UPDATE statement. Also find the column index
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** for each column to be updated in the pChanges array. For each
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** column to be updated, make sure we have authorization to change
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** that column.
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*/
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if( pWhere ){
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if( sqliteExprResolveIds(pParse, base, pTabList, 0, pWhere) ){
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goto update_cleanup;
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}
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if( sqliteExprCheck(pParse, pWhere, 0, 0) ){
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goto update_cleanup;
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}
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}
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chngRecno = 0;
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for(i=0; i<pChanges->nExpr; i++){
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if( sqliteExprResolveIds(pParse, base, pTabList, 0, pChanges->a[i].pExpr) ){
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if( sqliteExprResolveIds(pParse, pTabList, 0, pChanges->a[i].pExpr) ){
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goto update_cleanup;
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}
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if( sqliteExprCheck(pParse, pChanges->a[i].pExpr, 0, 0) ){
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@ -141,16 +128,14 @@ void sqliteUpdate(
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}
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}
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if( j>=pTab->nCol ){
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sqliteSetString(&pParse->zErrMsg, "no such column: ",
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pChanges->a[i].zName, 0);
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pParse->nErr++;
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sqliteErrorMsg(pParse, "no such column: %s", pChanges->a[i].zName);
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goto update_cleanup;
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}
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#ifndef SQLITE_OMIT_AUTHORIZATION
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{
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int rc;
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rc = sqliteAuthCheck(pParse, SQLITE_UPDATE, pTab->zName,
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pTab->aCol[j].zName);
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pTab->aCol[j].zName, db->aDb[pTab->iDb].zName);
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if( rc==SQLITE_DENY ){
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goto update_cleanup;
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}else if( rc==SQLITE_IGNORE ){
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@ -196,15 +181,43 @@ void sqliteUpdate(
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}
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}
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/* Resolve the column names in all the expressions in the
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** WHERE clause.
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*/
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if( pWhere ){
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if( sqliteExprResolveIds(pParse, pTabList, 0, pWhere) ){
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goto update_cleanup;
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}
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if( sqliteExprCheck(pParse, pWhere, 0, 0) ){
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goto update_cleanup;
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}
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}
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/* Start the view context
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*/
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if( isView ){
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sqliteAuthContextPush(pParse, &sContext, pTab->zName);
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}
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/* Begin generating code.
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*/
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v = sqliteGetVdbe(pParse);
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if( v==0 ) goto update_cleanup;
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sqliteBeginWriteOperation(pParse, 1, !row_triggers_exist && pTab->isTemp);
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sqliteBeginWriteOperation(pParse, 1, pTab->iDb);
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/* If we are trying to update a view, construct that view into
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** a temporary table.
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*/
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if( isView ){
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Select *pView;
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pView = sqliteSelectDup(pTab->pSelect);
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sqliteSelect(pParse, pView, SRT_TempTable, iCur, 0, 0, 0);
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sqliteSelectDelete(pView);
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}
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/* Begin the database scan
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*/
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pWInfo = sqliteWhereBegin(pParse, base, pTabList, pWhere, 1, 0);
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pWInfo = sqliteWhereBegin(pParse, pTabList, pWhere, 1, 0);
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if( pWInfo==0 ) goto update_cleanup;
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/* Remember the index of every item to be updated.
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@ -222,151 +235,169 @@ void sqliteUpdate(
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}
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if( row_triggers_exist ){
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int ii;
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sqliteVdbeAddOp(v, OP_OpenTemp, oldIdx, 0);
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sqliteVdbeAddOp(v, OP_OpenTemp, newIdx, 0);
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/* Create pseudo-tables for NEW and OLD
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*/
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sqliteVdbeAddOp(v, OP_OpenPseudo, oldIdx, 0);
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sqliteVdbeAddOp(v, OP_OpenPseudo, newIdx, 0);
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/* The top of the update loop for when there are triggers.
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*/
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sqliteVdbeAddOp(v, OP_ListRewind, 0, 0);
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addr = sqliteVdbeAddOp(v, OP_ListRead, 0, 0);
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sqliteVdbeAddOp(v, OP_Dup, 0, 0);
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/* Open a cursor and make it point to the record that is
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** being updated.
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*/
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sqliteVdbeAddOp(v, OP_Dup, 0, 0);
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sqliteVdbeAddOp(v, (pTab->isTemp?OP_OpenAux:OP_Open), base, pTab->tnum);
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sqliteVdbeAddOp(v, OP_MoveTo, base, 0);
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sqliteVdbeAddOp(v, OP_Integer, 13, 0);
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for(ii = 0; ii < pTab->nCol; ii++){
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if( ii == pTab->iPKey ){
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sqliteVdbeAddOp(v, OP_Recno, base, 0);
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}else{
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sqliteVdbeAddOp(v, OP_Column, base, ii);
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}
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if( !isView ){
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sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
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sqliteVdbeAddOp(v, OP_OpenRead, iCur, pTab->tnum);
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}
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sqliteVdbeAddOp(v, OP_MakeRecord, pTab->nCol, 0);
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sqliteVdbeAddOp(v, OP_MoveTo, iCur, 0);
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/* Generate the OLD table
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*/
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sqliteVdbeAddOp(v, OP_Recno, iCur, 0);
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sqliteVdbeAddOp(v, OP_RowData, iCur, 0);
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sqliteVdbeAddOp(v, OP_PutIntKey, oldIdx, 0);
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sqliteVdbeAddOp(v, OP_Integer, 13, 0);
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for(ii = 0; ii < pTab->nCol; ii++){
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if( aXRef[ii] < 0 ){
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if( ii == pTab->iPKey ){
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sqliteVdbeAddOp(v, OP_Recno, base, 0);
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}else{
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sqliteVdbeAddOp(v, OP_Column, base, ii);
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}
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/* Generate the NEW table
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*/
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if( chngRecno ){
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sqliteExprCode(pParse, pRecnoExpr);
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}else{
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sqliteVdbeAddOp(v, OP_Recno, iCur, 0);
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}
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for(i=0; i<pTab->nCol; i++){
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if( i==pTab->iPKey ){
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sqliteVdbeAddOp(v, OP_String, 0, 0);
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continue;
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}
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j = aXRef[i];
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if( j<0 ){
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sqliteVdbeAddOp(v, OP_Column, iCur, i);
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}else{
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sqliteExprCode(pParse, pChanges->a[aXRef[ii]].pExpr);
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sqliteExprCode(pParse, pChanges->a[j].pExpr);
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}
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}
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sqliteVdbeAddOp(v, OP_MakeRecord, pTab->nCol, 0);
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sqliteVdbeAddOp(v, OP_PutIntKey, newIdx, 0);
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sqliteVdbeAddOp(v, OP_Close, base, 0);
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sqliteVdbeAddOp(v, OP_Rewind, oldIdx, 0);
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sqliteVdbeAddOp(v, OP_Rewind, newIdx, 0);
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if( !isView ){
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sqliteVdbeAddOp(v, OP_Close, iCur, 0);
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}
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/* Fire the BEFORE and INSTEAD OF triggers
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*/
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if( sqliteCodeRowTrigger(pParse, TK_UPDATE, pChanges, TK_BEFORE, pTab,
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newIdx, oldIdx, onError, addr) ){
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goto update_cleanup;
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}
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}
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/* Rewind the list of records that need to be updated and
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** open every index that needs updating. Note that if any
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** index could potentially invoke a REPLACE conflict resolution
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** action, then we need to open all indices because we might need
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** to be deleting some records.
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*/
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openOp = pTab->isTemp ? OP_OpenWrAux : OP_OpenWrite;
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sqliteVdbeAddOp(v, openOp, base, pTab->tnum);
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if( onError==OE_Replace ){
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openAll = 1;
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}else{
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openAll = 0;
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for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
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if( pIdx->onError==OE_Replace ){
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openAll = 1;
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break;
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if( !isView ){
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/*
|
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** Open every index that needs updating. Note that if any
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** index could potentially invoke a REPLACE conflict resolution
|
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** action, then we need to open all indices because we might need
|
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** to be deleting some records.
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*/
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sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
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sqliteVdbeAddOp(v, OP_OpenWrite, iCur, pTab->tnum);
|
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if( onError==OE_Replace ){
|
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openAll = 1;
|
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}else{
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openAll = 0;
|
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for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
|
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if( pIdx->onError==OE_Replace ){
|
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openAll = 1;
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break;
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}
|
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}
|
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}
|
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}
|
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for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
|
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if( openAll || aIdxUsed[i] ){
|
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sqliteVdbeAddOp(v, openOp, base+i+1, pIdx->tnum);
|
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assert( pParse->nTab>base+i+1 );
|
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for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
|
||||
if( openAll || aIdxUsed[i] ){
|
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sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
|
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sqliteVdbeAddOp(v, OP_OpenWrite, iCur+i+1, pIdx->tnum);
|
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assert( pParse->nTab>iCur+i+1 );
|
||||
}
|
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}
|
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}
|
||||
|
||||
/* Loop over every record that needs updating. We have to load
|
||||
** the old data for each record to be updated because some columns
|
||||
** might not change and we will need to copy the old value.
|
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** Also, the old data is needed to delete the old index entires.
|
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** So make the cursor point at the old record.
|
||||
*/
|
||||
if( !row_triggers_exist ){
|
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sqliteVdbeAddOp(v, OP_ListRewind, 0, 0);
|
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addr = sqliteVdbeAddOp(v, OP_ListRead, 0, 0);
|
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sqliteVdbeAddOp(v, OP_Dup, 0, 0);
|
||||
}
|
||||
sqliteVdbeAddOp(v, OP_NotExists, base, addr);
|
||||
|
||||
/* If the record number will change, push the record number as it
|
||||
** will be after the update. (The old record number is currently
|
||||
** on top of the stack.)
|
||||
*/
|
||||
if( chngRecno ){
|
||||
sqliteExprCode(pParse, pRecnoExpr);
|
||||
sqliteVdbeAddOp(v, OP_MustBeInt, 0, 0);
|
||||
}
|
||||
|
||||
/* Compute new data for this record.
|
||||
*/
|
||||
for(i=0; i<pTab->nCol; i++){
|
||||
if( i==pTab->iPKey ){
|
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sqliteVdbeAddOp(v, OP_String, 0, 0);
|
||||
continue;
|
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/* Loop over every record that needs updating. We have to load
|
||||
** the old data for each record to be updated because some columns
|
||||
** might not change and we will need to copy the old value.
|
||||
** Also, the old data is needed to delete the old index entires.
|
||||
** So make the cursor point at the old record.
|
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*/
|
||||
if( !row_triggers_exist ){
|
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sqliteVdbeAddOp(v, OP_ListRewind, 0, 0);
|
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addr = sqliteVdbeAddOp(v, OP_ListRead, 0, 0);
|
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sqliteVdbeAddOp(v, OP_Dup, 0, 0);
|
||||
}
|
||||
j = aXRef[i];
|
||||
if( j<0 ){
|
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sqliteVdbeAddOp(v, OP_Column, base, i);
|
||||
}else{
|
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sqliteExprCode(pParse, pChanges->a[j].pExpr);
|
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sqliteVdbeAddOp(v, OP_NotExists, iCur, addr);
|
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|
||||
/* If the record number will change, push the record number as it
|
||||
** will be after the update. (The old record number is currently
|
||||
** on top of the stack.)
|
||||
*/
|
||||
if( chngRecno ){
|
||||
sqliteExprCode(pParse, pRecnoExpr);
|
||||
sqliteVdbeAddOp(v, OP_MustBeInt, 0, 0);
|
||||
}
|
||||
|
||||
/* Compute new data for this record.
|
||||
*/
|
||||
for(i=0; i<pTab->nCol; i++){
|
||||
if( i==pTab->iPKey ){
|
||||
sqliteVdbeAddOp(v, OP_String, 0, 0);
|
||||
continue;
|
||||
}
|
||||
j = aXRef[i];
|
||||
if( j<0 ){
|
||||
sqliteVdbeAddOp(v, OP_Column, iCur, i);
|
||||
}else{
|
||||
sqliteExprCode(pParse, pChanges->a[j].pExpr);
|
||||
}
|
||||
}
|
||||
|
||||
/* Do constraint checks
|
||||
*/
|
||||
sqliteGenerateConstraintChecks(pParse, pTab, iCur, aIdxUsed, chngRecno, 1,
|
||||
onError, addr);
|
||||
|
||||
/* Delete the old indices for the current record.
|
||||
*/
|
||||
sqliteGenerateRowIndexDelete(db, v, pTab, iCur, aIdxUsed);
|
||||
|
||||
/* If changing the record number, delete the old record.
|
||||
*/
|
||||
if( chngRecno ){
|
||||
sqliteVdbeAddOp(v, OP_Delete, iCur, 0);
|
||||
}
|
||||
|
||||
/* Create the new index entries and the new record.
|
||||
*/
|
||||
sqliteCompleteInsertion(pParse, pTab, iCur, aIdxUsed, chngRecno, 1, -1);
|
||||
}
|
||||
|
||||
/* Do constraint checks
|
||||
*/
|
||||
sqliteGenerateConstraintChecks(pParse, pTab, base, aIdxUsed, chngRecno, 1,
|
||||
onError, addr);
|
||||
|
||||
/* Delete the old indices for the current record.
|
||||
*/
|
||||
sqliteGenerateRowIndexDelete(db, v, pTab, base, aIdxUsed);
|
||||
|
||||
/* If changing the record number, delete the old record.
|
||||
*/
|
||||
if( chngRecno ){
|
||||
sqliteVdbeAddOp(v, OP_Delete, base, 0);
|
||||
}
|
||||
|
||||
/* Create the new index entries and the new record.
|
||||
*/
|
||||
sqliteCompleteInsertion(pParse, pTab, base, aIdxUsed, chngRecno, 1);
|
||||
|
||||
/* Increment the row counter
|
||||
*/
|
||||
if( db->flags & SQLITE_CountRows && !pParse->trigStack){
|
||||
sqliteVdbeAddOp(v, OP_AddImm, 1, 0);
|
||||
}
|
||||
|
||||
/* If there are triggers, close all the cursors after each iteration
|
||||
** through the loop. The fire the after triggers.
|
||||
*/
|
||||
if( row_triggers_exist ){
|
||||
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
|
||||
if( openAll || aIdxUsed[i] )
|
||||
sqliteVdbeAddOp(v, OP_Close, base+i+1, 0);
|
||||
if( !isView ){
|
||||
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
|
||||
if( openAll || aIdxUsed[i] )
|
||||
sqliteVdbeAddOp(v, OP_Close, iCur+i+1, 0);
|
||||
}
|
||||
sqliteVdbeAddOp(v, OP_Close, iCur, 0);
|
||||
pParse->nTab = iCur;
|
||||
}
|
||||
sqliteVdbeAddOp(v, OP_Close, base, 0);
|
||||
pParse->nTab = base;
|
||||
|
||||
if( sqliteCodeRowTrigger(pParse, TK_UPDATE, pChanges, TK_AFTER, pTab,
|
||||
newIdx, oldIdx, onError, addr) ){
|
||||
goto update_cleanup;
|
||||
|
|
@ -384,11 +415,11 @@ void sqliteUpdate(
|
|||
if( !row_triggers_exist ){
|
||||
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
|
||||
if( openAll || aIdxUsed[i] ){
|
||||
sqliteVdbeAddOp(v, OP_Close, base+i+1, 0);
|
||||
sqliteVdbeAddOp(v, OP_Close, iCur+i+1, 0);
|
||||
}
|
||||
}
|
||||
sqliteVdbeAddOp(v, OP_Close, base, 0);
|
||||
pParse->nTab = base;
|
||||
sqliteVdbeAddOp(v, OP_Close, iCur, 0);
|
||||
pParse->nTab = iCur;
|
||||
}else{
|
||||
sqliteVdbeAddOp(v, OP_Close, newIdx, 0);
|
||||
sqliteVdbeAddOp(v, OP_Close, oldIdx, 0);
|
||||
|
|
@ -406,6 +437,7 @@ void sqliteUpdate(
|
|||
}
|
||||
|
||||
update_cleanup:
|
||||
sqliteAuthContextPop(&sContext);
|
||||
sqliteFree(apIdx);
|
||||
sqliteFree(aXRef);
|
||||
sqliteSrcListDelete(pTabList);
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue