醉了,mysql的删除居然变得这么麻烦 delete from table where id in()
delete from theTable where id in(select id from(select min(id) id from theTable group by title HAVING count(*)>1) ids) ;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。
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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
) ;
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