mysql使用查询出来的值update新的表

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今天遇到一个情况，使用新查询出来的值作为键值更新其他的表更新不了，报
[Err] 1093 - You can't specify target table 'cmpt_main' for update in FROM clause
我的mysql更新语句为：

UPDATE  cmpt_main SET cmpt_status=3 where cmpt_id in (

select cmptId from cmpt_main as a LEFT JOIN time_checkinrecord as b on a.cmpt_id = b.cmptId where cmpt_status is NULL and org_id like '1-3%' and a.cmpt_name not like '%测%' GROUP BY cmptId HAVING count(cmptId)> 200

)

You can’t specify target table ‘cmpt_main’ for update in FROM clause，报错的意思是：不能使用从一个表查询出来的语句更新这个表。

解决思路：
使用其他的临时表更新

UPDATE  cmpt_main SET cmpt_status=3 where cmpt_id in (
SELECT cmptId from (
select cmptId from cmpt_main as a LEFT JOIN time_checkinrecord as b on a.cmpt_id = b.cmptId where cmpt_status is NULL and org_id like '1-3%' and a.cmpt_name not like '%测%' GROUP BY cmptId HAVING count(cmptId)> 200
) as T
)

这样就能更新成功。

sql执行顺序是：