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+mw8goox16ef6zmfp9cve7kwfstusrda4gifax...@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(-)
