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Be more realistic about plans involving Materialize nodes: take their

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cost into account while planning.
This commit is contained in:
Tom Lane
2002-11-30 05:21:03 +00:00
parent 829cedc8cf
commit 935969415a
19 changed files with 320 additions and 160 deletions
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12
src/backend/optimizer/plan/subselect.c
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/subselect.c,v 1.57 2002/11/30 00:08:18 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/subselect.c,v 1.58 2002/11/30 05:21:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -328,9 +328,17 @@ make_subplan(SubLink *slink)
if (use_material)
{
Plan *matplan;
Path matpath; /* dummy for result of cost_material */
matplan = (Plan *) make_material(plan->targetlist, plan);
/* kluge --- see comments above */
/* need to calculate costs */
cost_material(&matpath,
plan->total_cost,
plan->plan_rows,
plan->plan_width);
matplan->startup_cost = matpath.startup_cost;
matplan->total_cost = matpath.total_cost;
/* parameter kluge --- see comments above */
matplan->extParam = listCopy(plan->extParam);
matplan->locParam = listCopy(plan->locParam);
node->plan = plan = matplan;