diff options
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index bfc11aa0046..d01acdc6182 100644 --- a/src/backend/optimizer/plan/createplan.c +++ b/src/backend/optimizer/plan/createplan.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.137 2003/02/16 06:06:32 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.138 2003/03/10 03:53:50 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1827,6 +1827,41 @@ make_material(List *tlist, Plan *lefttree) return node; } +/* + * materialize_finished_plan: stick a Material node atop a completed plan + * + * There are a couple of places where we want to attach a Material node + * after completion of subquery_planner(). This currently requires hackery. + * Since subquery_planner has already run SS_finalize_plan on the subplan + * tree, we have to kluge up parameter lists for the Material node. + * Possibly this could be fixed by postponing SS_finalize_plan processing + * until setrefs.c is run? + */ +Plan * +materialize_finished_plan(Plan *subplan) +{ + Plan *matplan; + Path matpath; /* dummy for result of cost_material */ + + matplan = (Plan *) make_material(subplan->targetlist, subplan); + + /* Set cost data */ + cost_material(&matpath, + subplan->total_cost, + subplan->plan_rows, + subplan->plan_width); + matplan->startup_cost = matpath.startup_cost; + matplan->total_cost = matpath.total_cost; + matplan->plan_rows = subplan->plan_rows; + matplan->plan_width = subplan->plan_width; + + /* parameter kluge --- see comments above */ + matplan->extParam = bms_copy(subplan->extParam); + matplan->allParam = bms_copy(subplan->allParam); + + return matplan; +} + Agg * make_agg(Query *root, List *tlist, List *qual, AggStrategy aggstrategy, |