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Allow the WHERE clause in an UPDATE or DELETE against a view with an

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INSTEAD OF trigger to refer to the view by name.  Ticket #3298. (CVS 5589)

FossilOrigin-Name: 7360e5d1f37ed6672f336b625b3c90d060e0a020
This commit is contained in:
drh
2008-08-22 12:30:52 +00:00
parent f489c45a63
commit 2a5d825ea2
6 changed files with 87 additions and 18 deletions
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13
src/delete.c
View File

@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** in order to generate code for DELETE FROM statements.
**
** $Id: delete.c,v 1.172 2008/08/20 16:35:10 drh Exp $
** $Id: delete.c,v 1.173 2008/08/22 12:30:52 drh Exp $
*/
#include "sqliteInt.h"
@@ -90,7 +90,7 @@ void sqlite3OpenTable(
*/
void sqlite3MaterializeView(
Parse *pParse, /* Parsing context */
Select *pView, /* View definition */
Table *pView, /* View definition */
Expr *pWhere, /* Optional WHERE clause to be added */
int iCur /* Cursor number for ephemerial table */
){
@@ -98,12 +98,15 @@ void sqlite3MaterializeView(
Select *pDup;
sqlite3 *db = pParse->db;
pDup = sqlite3SelectDup(db, pView);
pDup = sqlite3SelectDup(db, pView->pSelect);
if( pWhere ){
SrcList *pFrom;
Token viewName;
pWhere = sqlite3ExprDup(db, pWhere);
pFrom = sqlite3SrcListAppendFromTerm(pParse, 0, 0, 0, 0, pDup, 0, 0);
viewName.z = pView->zName;
viewName.n = strlen(viewName.z);
pFrom = sqlite3SrcListAppendFromTerm(pParse, 0, 0, 0, &viewName, pDup, 0,0);
pDup = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 0, 0, 0);
}
sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur);
@@ -247,7 +250,7 @@ void sqlite3DeleteFrom(
** a ephemeral table.
*/
if( isView ){
sqlite3MaterializeView(pParse, pTab->pSelect, pWhere, iCur);
sqlite3MaterializeView(pParse, pTab, pWhere, iCur);
}
/* Resolve the column names in the WHERE clause.