2014年3月12日
[SQL]查询及删除重复记录的SQL语句
摘要： 一：查询及删除重复记录的SQL语句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 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 peop 阅读全文
posted @ 2014-03-12 10:07 我是小菜鸟 阅读(303) 评论(0) 推荐(0)