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230问答网 > sql server的数据，主键唯一，但是主键以外的数据有可能重复的情况，我怎么将重复的数据主键查询出来啊？

sql server的数据，主键唯一，但是主键以外的数据有可能重复的情况，我怎么将重复的数据主键查询出来啊？

2025-03-27 03:59:32

推荐回答（1个）

回答1：

在知道那个字段重复的情况
select StudentId from ScoreList group by StudentId having COUNT(*)>1

同理你这里只是多个字段而已处理的方式一致

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