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 复制代码 代码如下: select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count (p 阅读全文
posted @ 2016-08-31 15:52
有梦就能实现
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