diff options
Diffstat (limited to 'mysql-test/r/subselect4.result')
| -rw-r--r-- | mysql-test/r/subselect4.result | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result index 2814e5a6dcd..11b27e76782 100644 --- a/mysql-test/r/subselect4.result +++ b/mysql-test/r/subselect4.result @@ -869,7 +869,7 @@ NULL EXPLAIN SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); f1 f2 @@ -960,7 +960,7 @@ NULL EXPLAIN SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2); f1 f2 @@ -1055,7 +1055,7 @@ NULL EXPLAIN SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); f1 f2 @@ -1146,7 +1146,7 @@ NULL EXPLAIN SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL No matching min/max row SELECT * FROM t1 WHERE (2, 0) NOT IN (SELECT min(f3)+f3, min(f4)+f3+max(f4) FROM t2 WHERE f3 > 10); f1 f2 @@ -2012,7 +2012,7 @@ FROM t2 JOIN t3 ON t3.f4 = t2.f4 WHERE t3.f1 = 8 GROUP BY 1, 2; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 system NULL NULL NULL NULL 1 Using temporary; Using filesort +1 PRIMARY t3 system NULL NULL NULL NULL 1 Using filesort 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where 2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE 3 MATERIALIZED NULL NULL NULL NULL NULL NULL NULL no matching row in const table @@ -2325,5 +2325,19 @@ ORDER BY alias1.b; pk b pk b 1 1 1 1 drop table t1, t2, t3; +# +# MDEV-4144 simple subquery causes full scan instead of range scan +# +CREATE TABLE t1 (id int not null auto_increment, x int not null, primary key(id)); +INSERT INTO t1 (x) VALUES (0),(0),(0); +EXPLAIN +SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 range PRIMARY PRIMARY 4 NULL 3 Using where; Using filesort +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT x FROM t1 WHERE id > (SELECT MAX(id) - 1000 FROM t1) ORDER BY x LIMIT 1; +x +0 +drop table t1; SET optimizer_switch= @@global.optimizer_switch; set @@tmp_table_size= @@global.tmp_table_size; |