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Skip invoking set_uppernode_references() for a RESULT node

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that has no subplan --- saves a material amount of time for a simple
INSERT ... VALUES query.
This commit is contained in:
Tom Lane 1999-10-30 23:07:55 +00:00
parent e2a29eb52c
commit 57ea208477
1 changed files with 8 additions and 3 deletions
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11
src/backend/optimizer/plan/setrefs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.57 1999/08/22 20:14:48 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.58 1999/10/30 23:07:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -110,8 +110,13 @@ set_plan_references(Plan *plan)
set_uppernode_references(plan, (Index) 0);
break;
case T_Result:
/* XXX why does Result use a different subvarno? */
set_uppernode_references(plan, (Index) OUTER);
/* Result may or may not have a subplan; no need to fix up
* subplan references if it hasn't got one...
*
* XXX why does Result use a different subvarno from Agg/Group?
*/
if (plan->lefttree != NULL)
set_uppernode_references(plan, (Index) OUTER);
fix_opids(((Result *) plan)->resconstantqual);
break;
case T_Append: