MYSQL——[Error Code : 1064]

Ying-er — Fri, 09 Jul 2010 12:57:00 GMT

删除数据库中的重复记录
SqlServer：

delete from team where id in (select min(id) from team group by [name] having count(id) > 1)

MySql：

Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '[name] having count(id) > 1)' at line 1
(0 ms taken)

so：

create temporary table tmp_wrap select * from users_groups group by uid having count(1) >= 1;

truncate table users_groups;

insert into users_groups select * from tmp_wrap;

drop table tmp_wrap;

OR：

delete team as a from team as a,(select min(id) as id,`name` from team group by `name` having count(id) > 1) as b where a.id=b.id and a.`name`=b.`name`

Ying-er 2010-07-09 20:57 发表评论

BlogJava-Java,永远不敢言精通-随笔分类-MySql

MYSQL——[Error Code : 1064]