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Expression nodes of type TK_ROW mean the rowid of the first table in the

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source list. (CVS 5769)

FossilOrigin-Name: 2f7db6c98f17e0b7110258093c283091a91d4e4f
This commit is contained in:
drh
2008-10-06 13:54:35 +00:00
parent 488e7b6323
commit 41204f1fdd
3 changed files with 28 additions and 8 deletions
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22
src/resolve.c
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@ -14,7 +14,7 @@
** resolve all identifiers by associating them with a particular
** table and column.
**
** $Id: resolve.c,v 1.5 2008/08/29 02:14:03 drh Exp $
** $Id: resolve.c,v 1.6 2008/10/06 13:54:35 drh Exp $
*/
#include "sqliteInt.h"
#include <stdlib.h>
@ -418,6 +418,26 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
}
#endif
switch( pExpr->op ){
#ifndef SQLITE_OMIT_UPDATE_DELETE_LIMIT
/* The special operator TK_ROW means use the rowid for the first
** column in the FROM clause. This is used by the LIMIT and ORDER BY
** clause processing on UPDATE and DELETE statements.
*/
case TK_ROW: {
SrcList *pSrcList = pNC->pSrcList;
struct SrcList_item *pItem;
assert( pSrcList && pSrcList->nSrc==1 );
pItem = pSrcList->a;
pExpr->op = TK_COLUMN;
pExpr->pTab = pItem->pTab;
pExpr->iTable = pItem->iCursor;
pExpr->iColumn = -1;
pExpr->affinity = SQLITE_AFF_INTEGER;
break;
}
#endif /* SQLITE_OMIT_UPDATE_DELETE_LIMIT
/* A lone identifier is the name of a column.
*/
case TK_ID: {