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Save calculated transitionSpace in Agg node.

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This will be useful in the upcoming Hash Aggregation work to improve
estimates for hash table sizing.

Discussion: https://postgr.es/m/37091115219dd522fd9ed67333ee8ed1b7e09443.camel%40j-davis.com
This commit is contained in:
Jeff Davis
2020-02-27 10:46:58 -08:00
parent e537aed61d
commit c11cb17dc5
5 changed files with 14 additions and 4 deletions
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2
src/backend/optimizer/util/pathnode.c
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@ -2949,6 +2949,7 @@ create_agg_path(PlannerInfo *root,
pathnode->aggstrategy = aggstrategy;
pathnode->aggsplit = aggsplit;
pathnode->numGroups = numGroups;
pathnode->transitionSpace = aggcosts ? aggcosts->transitionSpace : 0;
pathnode->groupClause = groupClause;
pathnode->qual = qual;
@ -3036,6 +3037,7 @@ create_groupingsets_path(PlannerInfo *root,
pathnode->aggstrategy = aggstrategy;
pathnode->rollups = rollups;
pathnode->qual = having_qual;
pathnode->transitionSpace = agg_costs ? agg_costs->transitionSpace : 0;
Assert(rollups != NIL);
Assert(aggstrategy != AGG_PLAIN || list_length(rollups) == 1);