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Fix testing of parallel-safety of scan/join target. 

In commit 960df2a971 ("Correctly assess parallel-safety of tlists when
SRFs are used."), the testing of scan/join target was done incorrectly,
which caused a plan-quality problem.  Backpatch through to v11 where
the aforementioned commit went in, since this is a regression from v10.

Author: Etsuro Fujita
Reviewed-by: Robert Haas and Tom Lane
Discussion: https://postgr.es/m/5C75303E.8020303@lab.ntt.co.jp
This commit is contained in:
Etsuro Fujita 2019-03-12 16:21:57 +09:00
parent 6f918159a9
commit b5afdde6a7
1 changed files with 1 additions and 1 deletions
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2
src/backend/optimizer/plan/planner.c
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@ -1993,7 +1993,7 @@ grouping_planner(PlannerInfo *root, bool inheritance_update,
{
scanjoin_target = make_group_input_target(root, final_target);
scanjoin_target_parallel_safe =
is_parallel_safe(root, (Node *) grouping_target->exprs);
is_parallel_safe(root, (Node *) scanjoin_target->exprs);
}
else
{