MySQL中 You can’t specify target table for update in FROM clause 错误解决方法

UPDATE t_comment SET pid=0 
#SELECT * FROM t_comment
#同时选择并且更新,MySQL需要中间表进行过滤
WHERE id IN(
SELECT a.id FROM
(
SELECT cb.id FROM t_comment AS cb GROUP BY article_id HAVING COUNT(*)=1
) AS a
)
View Code

需要使用中间表进行过滤,示例SQL语句如上。

原文地址:https://www.cnblogs.com/Wcy100/p/5754910.html