percona/percona-toolkit
1
0
Fork 0
mirror of https://github.com/percona/percona-toolkit.git synced 2025-09-14 23:40:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add forked Maatkit tools in bin/ and their tests in t/.

Browse Source
This commit is contained in:
Daniel Nichter
2011-06-24 16:02:05 -06:00
parent 6c501128e6
commit b4b6376be1
679 changed files with 177876 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
t/pt-visual-explain/samples/const_row_not_found.sql Normal file
View File

@@ -0,0 +1,11 @@
mysql> CREATE TABLE t1 (i INT);
mysql> explain select * from t1 where not exists ((select t11.i from t1 t11) union (select t12.i from t1 t12));
+----+--------------+------------+--------+---------------+------+---------+------+------+--------------------------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+--------------+------------+--------+---------------+------+---------+------+------+--------------------------------+
| 1 | PRIMARY | t1 | system | NULL | NULL | NULL | NULL | 0 | const row not found |
| 2 | SUBQUERY | NULL | NULL | NULL | NULL | NULL | NULL | NULL | No tables used |
| 3 | SUBQUERY | NULL | NULL | NULL | NULL | NULL | NULL | NULL | no matching row in const table |
| 4 | UNION | t12 | system | NULL | NULL | NULL | NULL | 0 | const row not found |
| NULL | UNION RESULT | <union2,4> | ALL | NULL | NULL | NULL | NULL | NULL | |
+----+--------------+------------+--------+---------------+------+---------+------+------+--------------------------------+