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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 /mysql-test/main/order_by.result | |
| 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 'mysql-test/main/order_by.result')
| -rw-r--r-- | mysql-test/main/order_by.result | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/main/order_by.result b/mysql-test/main/order_by.result index 8d1e471f618..8692e727c60 100644 --- a/mysql-test/main/order_by.result +++ b/mysql-test/main/order_by.result @@ -1515,7 +1515,7 @@ WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' ORDER BY t2.c LIMIT 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 range a,b,c c 5 NULL 420 Using where -1 SIMPLE t1 ref a a 39 test.t2.a,const 10 Using where; Using index +1 SIMPLE t1 ref a a 39 test.t2.a,const 1 Using where; Using index SELECT d FROM t3 AS t1, t2 AS t2 WHERE t2.b=14 AND t2.a=t1.a AND 5.1<t2.c AND t1.b='DE' ORDER BY t2.c LIMIT 1; |