1、查找表中多余的重复记录，重复记录是根据单个字段（peopleId）来判断

```select * from people
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) ```
2、删除表中多余的重复记录，重复记录是根据单个字段（peopleId）来判断，只留有rowid最小的记录

```    delete from people
where peopleId in (select peopleId from people group by peopleId   having count(peopleId) > 1)
and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)     ```
3、查找表中多余的重复记录（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(*)```
4、删除表中多余的重复记录（多个字段），只留有rowid最小的记录

```delete 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)```
5、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) ```