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Conditionally execute Junk filter only when ORDER BY of columns

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not in target list.
This commit is contained in:
Bruce Momjian 1998-07-19 03:46:29 +00:00
parent 62cd6e7b75
commit 5b4ca67147
1 changed files with 30 additions and 10 deletions
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40
src/backend/executor/execMain.c
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@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.48 1998/06/15 19:28:19 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.49 1998/07/19 03:46:29 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -522,18 +522,38 @@ InitPlan(CmdType operation, Query *parseTree, Plan *plan, EState *estate)
* SELECT added by daveh@insightdist.com 5/20/98 to allow
* ORDER/GROUP BY have an identifier missing from the target.
*/
if (operation == CMD_UPDATE || operation == CMD_DELETE ||
operation == CMD_INSERT || operation == CMD_SELECT)
{
JunkFilter *j = (JunkFilter *) ExecInitJunkFilter(targetList);
estate->es_junkFilter = j;
bool junk_filter_needed = false;
List *tlist;
if (operation == CMD_SELECT)
tupType = j->jf_cleanTupType;
}
else
estate->es_junkFilter = NULL;
{
foreach(tlist, targetList)
{
TargetEntry *tle = lfirst(tlist);
if (tle->resdom->resjunk)
{
junk_filter_needed = true;
break;
}
}
}
if (operation == CMD_UPDATE || operation == CMD_DELETE ||
operation == CMD_INSERT ||
(operation == CMD_SELECT && junk_filter_needed))
{
JunkFilter *j = (JunkFilter *) ExecInitJunkFilter(targetList);
estate->es_junkFilter = j;
if (operation == CMD_SELECT)
tupType = j->jf_cleanTupType;
}
else
estate->es_junkFilter = NULL;
}
/* ----------------
* initialize the "into" relation
* ----------------