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| author | Mattias Jonsson <mattias.jonsson@sun.com> | 2010-03-04 12:09:09 +0100 |
|---|---|---|
| committer | Mattias Jonsson <mattias.jonsson@sun.com> | 2010-03-04 12:09:09 +0100 |
| commit | e46d120e8ef7de8660d10a96f8cfee47e8836b53 (patch) | |
| tree | 192b9147cfa1de054d482806c80fa69dd6b55e62 /pstack/budbg.h | |
| parent | ae3e094191d2d48c5468a6fd8e09a54e687cb3e8 (diff) | |
| download | mariadb-git-e46d120e8ef7de8660d10a96f8cfee47e8836b53.tar.gz | |
Bug#48229: group by performance issue of partitioned table
Problem was block_size on partitioned tables was not set,
resulting in keys_per_block was not correct which affects
the cost calculation for read time of indexes (including
cost for group min/max).Which resulted in a bad optimizer
decision.
Fixed by setting stats.block_size correctly.
mysql-test/r/partition_range.result:
Bug#48229: group by performance issue of partitioned table
Added result
mysql-test/t/partition_range.test:
Bug#48229: group by performance issue of partitioned table
Added test
sql/ha_partition.cc:
Bug#48229: group by performance issue of partitioned table
Added missing assignment of stats.block_size.
Diffstat (limited to 'pstack/budbg.h')
0 files changed, 0 insertions, 0 deletions