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Overview
Comment: | Improved detection of number of column mismatch for vector assignment in UPDATE statements. Ticket [78acc9d40f0786e8] |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
bd4bda73df3794eef424eb13e08fc7cc |
User & Date: | drh 2019-08-26 14:18:28 |
Context
2019-08-26
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14:57 | Tweak the shell tool ".recover" command so that it can recover rows that consist of a rowid and no fields. check-in: 279ac7fdec user: dan tags: trunk | |
14:18 | Improved detection of number of column mismatch for vector assignment in UPDATE statements. Ticket [78acc9d40f0786e8] check-in: bd4bda73df user: drh tags: trunk | |
13:45 | Fix typo in a comment. No code changes. check-in: d0cc06d8a3 user: drh tags: trunk | |
Changes
Changes to src/expr.c.
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sqlite3ErrorMsg(pParse, "%d columns assigned %d values", pColumns->nId, n); goto vector_append_error; } for(i=0; i<pColumns->nId; i++){ Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i); pList = sqlite3ExprListAppend(pParse, pList, pSubExpr); if( pList ){ assert( pList->nExpr==iFirst+i+1 ); pList->a[pList->nExpr-1].zName = pColumns->a[i].zName; pColumns->a[i].zName = 0; } } ................................................................................ } case TK_SELECT_COLUMN: { int n; if( pExpr->pLeft->iTable==0 ){ pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft); } assert( pExpr->iTable==0 || pExpr->pLeft->op==TK_SELECT ); if( pExpr->iTable && pExpr->iTable!=(n = sqlite3ExprVectorSize(pExpr->pLeft)) ){ sqlite3ErrorMsg(pParse, "%d columns assigned %d values", pExpr->iTable, n); } return pExpr->pLeft->iTable + pExpr->iColumn; } case TK_IN: { |
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sqlite3ErrorMsg(pParse, "%d columns assigned %d values", pColumns->nId, n); goto vector_append_error; } for(i=0; i<pColumns->nId; i++){ Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i); assert( pSubExpr!=0 || db->mallocFailed ); assert( pSubExpr==0 || pSubExpr->iTable==0 ); if( pSubExpr==0 ) continue; pSubExpr->iTable = pColumns->nId; pList = sqlite3ExprListAppend(pParse, pList, pSubExpr); if( pList ){ assert( pList->nExpr==iFirst+i+1 ); pList->a[pList->nExpr-1].zName = pColumns->a[i].zName; pColumns->a[i].zName = 0; } } ................................................................................ } case TK_SELECT_COLUMN: { int n; if( pExpr->pLeft->iTable==0 ){ pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft); } assert( pExpr->iTable==0 || pExpr->pLeft->op==TK_SELECT ); if( pExpr->iTable!=0 && pExpr->iTable!=(n = sqlite3ExprVectorSize(pExpr->pLeft)) ){ sqlite3ErrorMsg(pParse, "%d columns assigned %d values", pExpr->iTable, n); } return pExpr->pLeft->iTable + pExpr->iColumn; } case TK_IN: { |
Changes to src/sqliteInt.h.
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#if SQLITE_MAX_EXPR_DEPTH>0 int nHeight; /* Height of the tree headed by this node */ #endif int iTable; /* TK_COLUMN: cursor number of table holding column ** TK_REGISTER: register number ** TK_TRIGGER: 1 -> new, 0 -> old ** EP_Unlikely: 134217728 times likelihood ** TK_SELECT: 1st register of result vector */ ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. ** TK_VARIABLE: variable number (always >= 1). ** TK_SELECT_COLUMN: column of the result vector */ i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */ u8 op2; /* TK_REGISTER/TK_TRUTH: original value of Expr.op |
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#if SQLITE_MAX_EXPR_DEPTH>0
int nHeight; /* Height of the tree headed by this node */
#endif
int iTable; /* TK_COLUMN: cursor number of table holding column
** TK_REGISTER: register number
** TK_TRIGGER: 1 -> new, 0 -> old
** EP_Unlikely: 134217728 times likelihood
** TK_SELECT_COLUMN: Number of columns on the LHS
** TK_SELECT: 1st register of result vector */
ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid.
** TK_VARIABLE: variable number (always >= 1).
** TK_SELECT_COLUMN: column of the result vector */
i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */
u8 op2; /* TK_REGISTER/TK_TRUTH: original value of Expr.op
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Changes to test/rowvalue7.test.
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UPDATE t1 SET (c,d) = (SELECT x,y,z FROM t2 WHERE w=a); } {1 {2 columns assigned 3 values}} do_catchsql_test 2.2 { UPDATE t1 SET (b,c,d) = (SELECT x,y FROM t2 WHERE w=a); } {1 {3 columns assigned 2 values}} finish_test |
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UPDATE t1 SET (c,d) = (SELECT x,y,z FROM t2 WHERE w=a); } {1 {2 columns assigned 3 values}} do_catchsql_test 2.2 { UPDATE t1 SET (b,c,d) = (SELECT x,y FROM t2 WHERE w=a); } {1 {3 columns assigned 2 values}} # 2019-08-26 # ticket https://www.sqlite.org/src/info/78acc9d40f0786e8 # do_catchsql_test 3.0 { DROP TABLE IF EXISTS t1; CREATE TABLE t1(a,b); INSERT INTO t1 VALUES(1,2); UPDATE t1 SET (a,a,a,b)=(SELECT 99,100); } {1 {4 columns assigned 2 values}} finish_test |