SQL 查询表中相同记录

第一种方法

select * from job_personal a where
(select count(1) from job_personal
where username=a.username and
email=a.email)>1 order by pid

第二种方式

select * from job_personal where username

 in(select username from job_personal   group by username having count(username)>1)
order by username asc