删除重复记录的SQL语句是我们最常用的语句之一，下面就为您将介绍Oracle删除重复记录的SQL语句写法，希望对您能有所帮助。

创新互联主要从事网站设计制作、成都网站制作、网页设计、企业做网站、公司建网站等业务。立足成都服务城厢,十余年网站建设经验,价格优惠、服务专业,欢迎来电咨询建站服务:028-86922220

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、Oracle删除重复记录，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)

注:rowid为oracle自带不用该.....

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(*) > 1)4、Oracle删除重复记录（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)

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)

【编辑推荐】

oracle查询当前时间的实现

带您了解Oracle层次查询

带您深入了解Oracle临时表

oracle查询用户所有表的语句

Oracle with语句的用法

网页题目：Oracle删除重复记录的实现方法
网站网址：http://jxruijie.cn/article/dpciode.html