mysql临时表技巧给定一个drop table if EXISTS `tmp`create table tmp as select min(id) as id,uid from
mysql临时表技巧
给定一个drop table if EXISTS `tmp`;create table tmp as select min(id) as id,uid from user GROUP by uid HAVING count(uid)>1;delete from user where id not in (select id from tmp) and uid in(select uid from tmp); drop table tmp;commit;?
