File: derived_over_bookmark_lookup.sql

package info (click to toggle)
percona-toolkit 3.2.1-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, forky, sid, trixie
  • size: 68,916 kB
  • sloc: perl: 241,287; sql: 22,868; sh: 19,746; javascript: 6,799; makefile: 353; awk: 38; python: 30; sed: 1
file content (10 lines) | stat: -rw-r--r-- 770 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
mysql> explain select * from (select * from sakila.film_actor where film_id = 1) as x;
+----+-------------+------------+------+----------------+----------------+---------+------+------+-------+
| id | select_type | table      | type | possible_keys  | key            | key_len | ref  | rows | Extra |
+----+-------------+------------+------+----------------+----------------+---------+------+------+-------+
|  1 | PRIMARY     | <derived2> | ALL  | NULL           | NULL           | NULL    | NULL |   10 |       | 
|  2 | DERIVED     | film_actor | ref  | idx_fk_film_id | idx_fk_film_id | 2       |      |   10 |       | 
+----+-------------+------------+------+----------------+----------------+---------+------+------+-------+
2 rows in set (0.01 sec)

mysql> notee