标签：更新 ble abc 大神 from _id 执行 IV spec
以前遇到过几次这个问题，都觉得问题不大，所以没有记录，但是这次又遇到了，而且没有第一时间想起来，所以还是有记录下的必要
MySQL delete语句使用子查询操作同一张表的时候会抛出
DELETE from abc where id in (select c.id from abc c where c.C_ID is null )
[Err] 1093 - You can‘t specify target table ‘abc‘ for update in FROM clause
解决办法：加上一个虚拟中间表中转一下
DELETE from abc where id in (select * from (select c.ID from abc c where c.C_ID is null) s );
在更新的时候也会存在同样的问题
解决到了，但是原理是什么？不清楚，希望有大神看到后指教下，谢谢。
还有一个问题，删除的时候是不能起别名的
delete from abc s where s.ID = ‘qeq‘;
[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘s where s.ID = ‘qeq‘‘ at line 1
别名拿掉就可以正常执行了
标签：更新 ble abc 大神 from _id 执行 IV spec
原文地址：https://www.cnblogs.com/M4AkAcr/p/9228161.html
