摘要: 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) 例二: select * from testtable where n... 阅读全文
posted @ 2008-11-07 14:02 葱葱 阅读(64238) 评论(5) 推荐(8) 编辑