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Fix costing for parallel aggregation.

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The original patch kind of ignored the fact that we were doing something
different from a costing point of view, but nobody noticed.  This patch
fixes that oversight.

David Rowley
This commit is contained in:
Robert Haas
2016-04-12 16:24:55 -04:00
parent 46d73e0d65
commit deb71fa971
3 changed files with 92 additions and 25 deletions
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3
src/include/optimizer/clauses.h
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@@ -67,7 +67,8 @@ extern List *make_ands_implicit(Expr *clause);
extern PartialAggType aggregates_allow_partial(Node *clause);
extern bool contain_agg_clause(Node *clause);
extern void count_agg_clauses(PlannerInfo *root, Node *clause,
AggClauseCosts *costs);
AggClauseCosts *costs, bool finalizeAggs,
bool combineStates, bool serialStates);
extern bool contain_window_function(Node *clause);
extern WindowFuncLists *find_window_functions(Node *clause, Index maxWinRef);