我有下一个查询
SELECT
i.*,
gu.*
vs.*
FROM
common.global_users gu
LEFT JOIN common.global_users_perms gup ON (gu.global_user_id=gup.global_user_id)
LEFT JOIN p.individuals i ON (gup.parent_id = i.member_id)
LEFT JOIN p.vs ON (i.member_id=vs.member_id AND vs.status IN (1,4))
WHERE gup.region = 'us'
AND gu.user_type=2
AND ((gu.email='specific@email.com') OR (i.email='specific@email.com') OR (gu.username='specific@email.com'))
ORDER BY i.status, vs.member_id;
和下一个计划
+----+-------------+-------+--------+------------------------------------------+------------------+---------+-----------------------------+--------+----------+---------------------------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | filtered | Extra |
+----+-------------+-------+--------+------------------------------------------+------------------+---------+-----------------------------+--------+----------+---------------------------------+
| 1 | SIMPLE | gu | ref | PRIMARY,username,idx_user_type,idx_email | idx_user_type | 1 | const | 524243 | 100.00 | Using temporary; Using filesort |
| 1 | SIMPLE | gup | ref | global_user_id_2 | global_user_id_2 | 4 | common.gu.global_user_id | 1 | 100.00 | Using where |
| 1 | SIMPLE | i | eq_ref | PRIMARY | PRIMARY | 4 | common.gup.parent_id | 1 | 100.00 | Using where |
| 1 | SIMPLE | vs | ref | member_id,status | member_id | 4 | p.i.member_id | 1 | 100.00 | |
+----+-------------+-------+--------+------------------------------------------+------------------+---------+-----------------------------+--------+----------+---------------------------------+
有没有可能让它更快？现在大约需要 12 秒
PS 在gu表中只有两个唯一type值。并且该表中的所有记录数均超过 1M。