diff options
Diffstat (limited to 'mysql-test/main/order_by_innodb.result')
| -rw-r--r-- | mysql-test/main/order_by_innodb.result | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mysql-test/main/order_by_innodb.result b/mysql-test/main/order_by_innodb.result index 3ff1f92e94a..9cdf9800cee 100644 --- a/mysql-test/main/order_by_innodb.result +++ b/mysql-test/main/order_by_innodb.result @@ -49,6 +49,32 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL # Using sort_union(key1,key2); Using where drop table t0, t1; # +# MDEV-18094: Query with order by limit picking index scan over filesort +# +create table t0 (a int); +INSERT INTO t0 VALUES (0),(0),(0),(0),(2),(0),(0),(1),(1),(0); +CREATE TABLE t1 ( +a int(11), +b int(11), +c int(11), +KEY a_c (a,c), +KEY a_b (a,b) +) ENGINE=InnoDB; +insert into t1 select A.a , B.a, C.a from t0 A, t0 B, t0 C; +# should use ref access +explain select a,b,c from t1 where a=1 and c=2 order by b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ref a_c,a_b a_c 10 const,const 20 Using where; Using filesort +# both should use range access +explain select a,b,c from t1 where a=1 and c=2 order by b limit 1000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a_c,a_b a_b 5 NULL 200 Using where +explain select a,b,c from t1 where a=1 and c=2 order by b limit 2000; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 range a_c,a_b a_b 5 NULL 200 Using where +drop table t1,t0; +# Start of 10.2 tests +# # MDEV-14071: wrong results with orderby_uses_equalities=on # (duplicate of MDEV-13994) # @@ -121,3 +147,4 @@ i n 656 eight set optimizer_switch= @save_optimizer_switch; DROP TABLE t1,t2,t3; +# End of 10.2 tests |