Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | Proposed fix for the row-value TRIGGER UPDATE problem described in ticket [8c9458e7]. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | rowvalue-update-trigger |
Files: | files | file ages | folders |
SHA1: |
61a442ea2ceec2cbd327dae0ff5214e1 |
User & Date: | drh 2017-01-02 22:36:32.292 |
Context
2017-01-02
| ||
23:18 | Put an ALWAYS() on an unreachable branch in the sqlite3ExprListDup() routine. (check-in: 2caaaab5e0 user: drh tags: rowvalue-update-trigger) | |
22:36 | Proposed fix for the row-value TRIGGER UPDATE problem described in ticket [8c9458e7]. (check-in: 61a442ea2c user: drh tags: rowvalue-update-trigger) | |
19:10 | Increase the version number to 3.17.0 for the next release cycle. (check-in: 16415b5aad user: drh tags: trunk) | |
Changes
Changes to src/expr.c.
︙ | ︙ | |||
1084 1085 1086 1087 1088 1089 1090 | ** to enforce this constraint. */ static int dupedExprStructSize(Expr *p, int flags){ int nSize; assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */ assert( EXPR_FULLSIZE<=0xfff ); assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 ); | | | 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 | ** to enforce this constraint. */ static int dupedExprStructSize(Expr *p, int flags){ int nSize; assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */ assert( EXPR_FULLSIZE<=0xfff ); assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 ); if( 0==flags || p->op==TK_SELECT_COLUMN ){ nSize = EXPR_FULLSIZE; }else{ assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) ); assert( !ExprHasProperty(p, EP_FromJoin) ); assert( !ExprHasProperty(p, EP_MemToken) ); assert( !ExprHasProperty(p, EP_NoReduce) ); if( p->pLeft || p->x.pList ){ |
︙ | ︙ | |||
1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 | if( pzBuffer ){ *pzBuffer = zAlloc; } }else{ if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){ if( pNew->op==TK_SELECT_COLUMN ){ pNew->pLeft = p->pLeft; }else{ pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); } pNew->pRight = sqlite3ExprDup(db, p->pRight, 0); } } } | > > | 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 | if( pzBuffer ){ *pzBuffer = zAlloc; } }else{ if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){ if( pNew->op==TK_SELECT_COLUMN ){ pNew->pLeft = p->pLeft; assert( p->iColumn==0 || p->pRight==0 ); assert( p->pRight==0 || p->pRight==p->pLeft ); }else{ pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); } pNew->pRight = sqlite3ExprDup(db, p->pRight, 0); } } } |
︙ | ︙ | |||
1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 | if( pItem==0 ){ sqlite3DbFree(db, pNew); return 0; } pOldItem = p->a; for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); pItem->sortOrder = pOldItem->sortOrder; pItem->done = 0; pItem->bSpanIsTab = pOldItem->bSpanIsTab; pItem->u = pOldItem->u; } | > > > > > > > > > > > > > | 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 | if( pItem==0 ){ sqlite3DbFree(db, pNew); return 0; } pOldItem = p->a; for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; Expr *pNewExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); if( pOldExpr && pOldExpr->op==TK_SELECT_COLUMN && (pNewExpr = pItem->pExpr)!=0 ){ assert( pNewExpr->iColumn==0 || i>0 ); if( pNewExpr->iColumn==0 ){ assert( pOldExpr->pLeft==pOldExpr->pRight ); pNewExpr->pLeft = pNewExpr->pRight; }else if( pItem[-1].pExpr!=0 ){ pNewExpr->pLeft = pItem[-1].pExpr->pLeft; } } pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); pItem->sortOrder = pOldItem->sortOrder; pItem->done = 0; pItem->bSpanIsTab = pOldItem->bSpanIsTab; pItem->u = pOldItem->u; } |
︙ | ︙ |