摘要: 查询及删除重复记录的方法 1、查找表(people)中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select*frompeoplewherepeopleIdin(selectpeopleIdfrompeoplegroupbypeopleIdhavingcount(peopleI... 阅读全文
posted @ 2008-02-26 18:59 emanlee 阅读(425) 评论(0) 推荐(0) 编辑