oracle中sql的group by和查询新增要点

qq_34412985 发布时间：2019-12-02 08:26:39 ，浏览量：0

使用group by时候，select子句中字段没有出现在group by函数中则必须出现在组（聚合）函数中，否则报错

要求多个查询返回的结构相同

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oracle中sql的group by和查询新增要点

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