SQL按重复数量查询重复记录

单个字段(重复数量大于二的)

select * from register_followyangxingpatient
where phone in (select phone from register_followyangxingpatient group by phone having count(phone) > 2)

多个字段

select * from vitae a
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)

查找表中多余的重复记录（多个字段），不包含rowid最小的记录

select * from vitae a
where (a.peopleId,a.seq) in   (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)
and rowid not in (select min(rowid) from vitae group by peopleId,seq having count(*)>1)