| From: | Robert Haas <rhaas(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Avoid generating bogus paths with partitionwise aggregate. |
| Date: | 2018-06-22 13:21:44 |
| Message-ID: | E1fWM0W-0007VZ-NW@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Avoid generating bogus paths with partitionwise aggregate.
Previously, if some or all partitions had no partially aggregated path,
we would still try to generate a partially aggregated path for the
parent, leading to assertion failures or wrong answers.
Report by Rajkumar Raghuwanshi. Patch by Jeevan Chalke, reviewed
by Ashutosh Bapat. A few changes by me.
Discussion: http://postgr.es/m/CAKcux6=q4+Mw8gOOX16ef6ZMFp9Cve7KWFstUsrDa4GiFaXGUQ@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/c6f28af5d7af87d7370e5f169251d91437f100a2
Modified Files
--------------
src/backend/optimizer/plan/planner.c | 21 +++--
src/test/regress/expected/partition_aggregate.out | 105 ++++++++++++++++++++++
src/test/regress/sql/partition_aggregate.sql | 24 +++++
3 files changed, 142 insertions(+), 8 deletions(-)
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