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Oracle中分析函数over()的用法及说明_oracle_脚本之家

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By Select E.Empno, Select E.Ename, Select E.Deptno, E.Sal Rows
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更新时间：2023年02月28日 09:05:41   作者：爱吃牛肉的大老虎 这篇文章主要介绍了Oracle中分析函数over()的用法及说明，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教 1 over()分析函数 说明：聚合函数（如sum()、max()等）可以计算基于组的某种聚合值，但是聚合函数对于某个组只能返回一行记录。若想对于某组返回多行记录，则需要使用分析函数。 1.1 rank()/dense_rank() 1.1.1 基础 rank()/dense_rank over(partition by ...
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