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| author | Varun Gupta <varun.gupta@mariadb.com> | 2018-08-23 16:01:58 +0530 |
|---|---|---|
| committer | Varun Gupta <varun.gupta@mariadb.com> | 2018-08-23 16:01:58 +0530 |
| commit | 7d8d37c31d9cabaf31576eb3edeae6580ffb16b4 (patch) | |
| tree | 9ff55260fd11df219c47d6cff14730943ad34c21 /sql/sql_statistics.cc | |
| parent | bcc677bb7264db08b22284998706b44c377ed8ec (diff) | |
| download | mariadb-git-7d8d37c31d9cabaf31576eb3edeae6580ffb16b4.tar.gz | |
MDEV-17039: Query plan changes when we use GROUP BY optimization with optimizer_use_condition_selectivity=4
and use_stat_tables= PREFERABLY
Currently the code that calculates selectivity for a table does not take into account the case when
we can have GROUP BY optimization (looses index scan).
Diffstat (limited to 'sql/sql_statistics.cc')
0 files changed, 0 insertions, 0 deletions