mysql学习记录（二十四）--mysql相关工具(三)
------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| actor | 0 | PRIMARY | 1 | actor_id | A | 201 | | | | BTREE | | |
| actor | 1 | idx_actor_last_name | 1 | last_name | A | 201 | | | | BTREE | | |
+-------+------------+---------------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+