Fix partial aggregation for the case of a degenerate GROUP BY clause.
The plan generated for sorted partial aggregation with "GROUP BY constant"
included a Sort node with no sort keys, which the executor does not like.
Per report from Steve Randall. I'd add a regression test case if I could
think of a compact one, but it doesn't seem worth expending lots of cycles
on.
Report: <CABVd52UAdGXpg_rCk46egpNKYdXOzCjuJ1zG26E2xBe_8bj+Fg(at)mail(dot)gmail(dot)com>
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/e1b449bea909fa70211841d508cfaf91d18a6abb
Modified Files
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src/backend/optimizer/plan/planner.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)