2012年1月16日
查询和删除表中重复数据sql语句
摘要： 1、查询表中重复数据。select * from peoplewhere 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 peoplewhere peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)and rowid 阅读全文
posted @ 2012-01-16 10:40 摇摆的大叔 阅读(311) 评论(0) 推荐(0)