You can't specify target table 'Person' for update in FROM clause

标签：for   use   target   一起   class   一个   person   操作   问题   

DELETE FROM Persons WHERE Id NOT IN  (SELECT MIN(Id)AS id FROM Persons GROUP BY Email) ;

You can‘t specify target table ‘Person‘ for update in FROM clause

问题出现：同一个表里删除操作 和查询连同一起了

把后半句

(SELECT MIN(Id)AS id FROM Persons GROUP BY Email)

改

(select * from (SELECT MIN(Id)AS id FROM Persons GROUP BY Email)temp )

You can't specify target table 'Person' for update in FROM clause

标签：for   use   target   一起   class   一个   person   操作   问题   

原文地址：https://www.cnblogs.com/tk55/p/13219383.html