1093 - You can't specify target table 'account' for update in FROM clause

时间 2019-11-06

标签 can't specify target table account update clause 繁體版

原文原文链接

目的：查询一张表的相同的两条数据，并删除一条数据。3d

分析先查询出相同的数据，而后删除blog

查询相同的数据 ci

SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1；get

DELETE FROM account WHERE id = (SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1) ；table

1093 - You can't specify target table 'account' for update in FROM clausedate

不能为FROM子句中的更新指定目标表'account'。im

修改后：数据

DELETE FROM account WHERE id = 查询

(SELECT t.id from img

(SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1) t)；