diff options
Diffstat (limited to 'mysql-test/r/group_min_max.result')
| -rw-r--r-- | mysql-test/r/group_min_max.result | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mysql-test/r/group_min_max.result b/mysql-test/r/group_min_max.result index 36a44b05817..b3b660c4170 100644 --- a/mysql-test/r/group_min_max.result +++ b/mysql-test/r/group_min_max.result @@ -3893,5 +3893,22 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index a a 13 NULL 2 Using where; Using index drop table t1; # +# MDEV-15433: Optimizer does not use group by optimization with distinct +# +CREATE TABLE t1 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, a INT NOT NULL, KEY(a)); +OPTIMIZE TABLE t1; +Table Op Msg_type Msg_text +test.t1 optimize status OK +EXPLAIN SELECT DISTINCT a FROM t1; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range NULL a 4 NULL 5 Using index for group-by +SELECT DISTINCT a FROM t1; +a +1 +2 +3 +4 +drop table t1; +# # End of 10.1 tests # |