在 MySQL 中更新数据会出错答案

【问题标题】：Update Data In MySQL Gives Error在 MySQL 中更新数据会出错
【发布时间】：2014-03-12 05:27:42
【问题描述】：

update table1 
set isDeleted = 1 
where isDeleted = 0 
and mId in (select id from table1 where isDeleted = 1 );

错误代码：1093。您不能在 FROM 子句中指定目标表 'table1' 进行更新

【问题讨论】：

table1 id midsalary 1 null 10000 2 1 8000 3 1 8000 4 2 6000 update table1 set mid = t2.mid where mId in (select id from table1 as t2 where t2.mid is not null ) ;
Mysql error 1093 - Can't specify target table for update in FROM clause的可能重复

标签： mysql

【解决方案1】：

使用连接：

UPDATE table1 t1
JOIN table1 t2 ON t1.mId = t2.id
SET t1.isDeleted = 1
WHERE t1.isDeleted = 0
AND t2.isDeleted = 1

【讨论】：