居然要加这么多层,还需要在里面加一个别名才可以。
删除标题重复的旧记录。
delete from theTable where id in ( select id from ( select min(id) id from theTable group by title HAVING count(*)>1 ) ids ) ;
时间: 2024-08-17 13:11:22
居然要加这么多层,还需要在里面加一个别名才可以。
删除标题重复的旧记录。
delete from theTable where id in ( select id from ( select min(id) id from theTable group by title HAVING count(*)>1 ) ids ) ;