mysql

今天写了个更新数据库表的语句，本意是根据某个条件，筛选出该表某些数据之后，对这些数据进行删除操作，如下

delete from t_person where id in (select id from t_person where name = "hello");

然而却报错： You can't specify target table 't_person' for update in FROM clause

以下这篇博客（ https://blog.csdn.net/qq_29672495/article/details/72668008 ）给出了解决方式： 将SELECT出的结果再通过中间表SELECT一遍，这样就规避了错误。

更正如下：

delete from t_person where id in (select temp.id from (select id from t_person where name = "hello") temp);