diff options
Diffstat (limited to 'mysql-test/t/group_min_max.test')
| -rw-r--r-- | mysql-test/t/group_min_max.test | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/mysql-test/t/group_min_max.test b/mysql-test/t/group_min_max.test index a7f4325b2d1..adfa77c881c 100644 --- a/mysql-test/t/group_min_max.test +++ b/mysql-test/t/group_min_max.test @@ -961,3 +961,25 @@ insert into t1 (a,b) select a, max(b)+1 from t1 where a = 0 group by a; select * from t1; explain extended select sql_buffer_result a, max(b)+1 from t1 where a = 0 group by a; drop table t1; + + +# +# Bug #41610: key_infix_len can be overwritten causing some group by queries +# to return no rows +# + +CREATE TABLE t1 (a int, b int, c int, d int, + KEY foo (c,d,a,b), KEY bar (c,a,b,d)); + +INSERT INTO t1 VALUES (1, 1, 1, 1), (1, 1, 1, 2), (1, 1, 1, 3), (1, 1, 1, 4); +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT * FROM t1; +INSERT INTO t1 SELECT a,b,c+1,d FROM t1; + +#Should be non-empty +EXPLAIN SELECT DISTINCT c FROM t1 WHERE d=4; +SELECT DISTINCT c FROM t1 WHERE d=4; + +DROP TABLE t1; + +--echo End of 5.0 tests |