Mysql下SELECT的结果集作为UPDATE的WHERE条件时的SQL语法

这样是不行的
UPDATE `table_name` SET `column_1` = value WHERE `column_2` IN (SELECT * FROM `table_name` WHERE `column` = value) 

必须得这样:


UPDATE `table_name` AS alias_1 INNER JOIN (SELECT * FROM `table_name` WHERE `column` = value) AS alias_2 SET alias_1.column_1 = value WHERE alias_1.id = alias_2.id
原文地址:https://www.cnblogs.com/mysic/p/5312216.html