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| author | Sergei Petrunia <psergey@askmonty.org> | 2019-05-27 10:40:04 +0300 |
|---|---|---|
| committer | Sergei Petrunia <psergey@askmonty.org> | 2019-06-05 14:00:45 +0300 |
| commit | f7579518e2c32936442a1e20e391f60660c94b3c (patch) | |
| tree | 34efa012221725f11d1b926ffc92bc370e9ebbf0 /sql/item_subselect.cc | |
| parent | 7060b0320d1479bb9476e0cbd4acc584e059e1ff (diff) | |
| download | mariadb-git-f7579518e2c32936442a1e20e391f60660c94b3c.tar.gz | |
MDEV-19600: The optimizer should be able to produce rows=1 estimate for unique index with NULLable columnsbb-10.3-mdev19600
Modify best_access_path() to produce rows=1 estimate for null-rejecting
lookups on unique NULL keys.
Diffstat (limited to 'sql/item_subselect.cc')
0 files changed, 0 insertions, 0 deletions