Oracle开发专题之：分析函数总结
这一篇是对前面所有关于分析函数的文章的总结：
一、统计方面：
Sum(
) Over ([Partition by ] [Order by ])
Sum() Over ([Partition by ] [Order by ]
Rows Between Preceding And Following)
Sum() Over ([Partition by ] [Order by ]
Rows Between Preceding And Current Row)
Sum() Over ([Partition by ] [Order by ]
Range Between Interval '' 'Day' Preceding
And Interval '' 'Day' Following )
具体请参考《Oracle开发专题之：分析函数(OVER)》和《Oracle开发专题之：窗口函数》
二、排列方面：Rank() Over ([Partition by ] [Order by ] [Nulls First/Last])
Dense_rank() Over ([Patition by] [Order by ] [Nulls First/Last])
Row_number() Over ([Partitionby ] [Order by ] [Nulls First/Last])
Ntile() Over ([Partition by ] [Order by ])
具体请参考《Oracle开发专题之：分析函数2》
三、最大值/最小值查找方面：Min()/Max() Keep (Dense_rank First/Last [Partition by ] [Order by ])
具体请参考《Oracle开发专题之：分析函数3》
四、首记录/末记录查找方面：First_value / Last_value(Sum() Over ([Patition by ] [Order by ]
Rows Between Preceding And Following ))
具体请参考《Oracle开发专题之：窗口函数》
五、相邻记录之间比较方面：Lag(Sum(), 1) Over([Patition by ] [Order by ])
具体请参考《Oracle开发专题之：报表函数》
一、统计方面：
Sum() Over ([Partition by ] [Order by ])Sum() Over ([Partition by ] [Order by ] Rows Between Preceding And Following) Sum() Over ([Partition by ] [Order by ] Rows Between Preceding And Current Row)Sum() Over ([Partition by ] [Order by ] Range Between Interval '' 'Day' Preceding And Interval '' 'Day' Following )具体请参考《Oracle开发专题之：分析函数(OVER)》和《Oracle开发专题之：窗口函数》
二、排列方面：
Rank() Over ([Partition by ] [Order by ] [Nulls First/Last])Dense_rank() Over ([Patition by
] [Order by ] [Nulls First/Last]) Row_number() Over ([Partitionby ] [Order by ] [Nulls First/Last]) Ntile() Over ([Partition by ] [Order by ])具体请参考《Oracle开发专题之：分析函数2》
三、最大值/最小值查找方面：
Min()/Max() Keep (Dense_rank First/Last [Partition by ] [Order by ])具体请参考《Oracle开发专题之：分析函数3》
四、首记录/末记录查找方面：
First_value / Last_value(Sum() Over ([Patition by ] [Order by ] Rows Between Preceding And Following ))具体请参考《Oracle开发专题之：窗口函数》
五、相邻记录之间比较方面：
Lag(Sum(), 1) Over([Patition by ] [Order by ])具体请参考《Oracle开发专题之：报表函数》
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/219982/viewspace-619840/ ，如需转载，请注明出处，否则将追究法律责任。
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Oracle开发专题之：分析函数的使用
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