diff options
Diffstat (limited to 'mysql-test/main/fetch_first.result')
| -rw-r--r-- | mysql-test/main/fetch_first.result | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/mysql-test/main/fetch_first.result b/mysql-test/main/fetch_first.result index 69a0336d722..df182381d1c 100644 --- a/mysql-test/main/fetch_first.result +++ b/mysql-test/main/fetch_first.result @@ -1378,3 +1378,31 @@ a bar foo DROP TABLE t; +# +# MDEV-30324: Wrong result upon SELECT DISTINCT .. WITH TIES using index +# +CREATE TABLE t1 (a int, b char(3), KEY (a)); +INSERT INTO t1 VALUES (2,'foo'),(3,'bar'),(3,'bar'),(3,'zzz'); +EXPLAIN SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 1 ROWS WITH TIES; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL a 5 NULL 1 Using temporary +SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 1 ROWS WITH TIES; +a b +2 foo +EXPLAIN SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 2 ROWS WITH TIES; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index NULL a 5 NULL 2 Using temporary +SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 2 ROWS WITH TIES; +a b +2 foo +3 bar +3 zzz +EXPLAIN SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 3 ROWS WITH TIES; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort +SELECT DISTINCT a, b FROM t1 ORDER BY a FETCH FIRST 3 ROWS WITH TIES; +a b +2 foo +3 bar +3 zzz +DROP TABLE t1; |