select * from (select b.ID, b.Version,row_number() over(partition by OSCAR_CASE_ID order by VERSION desc) rn from TD_ADVERSE_EVENT b where b.status = 2)
where rn=1
1、 结构：聚合函数（）over（ partition by 字段1,字段2,字段3 order by 字段 desc/asc range between 数值/date preceding/flowing and 数值/date preceding/flowing） 聚合函数可以是：sum,count,avg,max,min,...
SELECT col, AVG(value) OVER(PARTITION BY col ORDER BY col) FROM tmp1 ORDER BY col; 2、SUM ( [ DISTINCT | ALL ] expr ) OVER ( analytic_clause ) 例如： --聚合函数 SELECT col, sum(value) FROM tmp1 ...
sum(sal) over (partition by deptno order by ename) 按部门“连续”求总和 sum(sal) over (partition by deptno) 按部门求总和 sum(sal) over (order by deptno，ename) 不按部门“连续”求总和 sum(sal) over () ...
rank ( ) over ([partition by col] order by col ) dense_rank ( ) over ([partition by col] order by col ) rownumber ( ) over ( [partition by col] order by col ) rank() 是排名的函数，该函数组内...
oracle分组查询数据 select BFMBIGNAME,projectaddress,...from(select BFMBIGNAME,projectaddress,BFMSMALLNAME,row_number() over (partition by BFMBIGNAME order by REGISTERDATE) id from Projectinfo) where id;
代码如下: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 ...
For example, a query that requests data generated in the month of October 1994 can scan just the rows stored in the October 1994 partition, rather than rows generated over years of activity....
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主要介绍了Oracle查询中OVER (PARTITION BY ..)用法，内容和代码大家参考一下。
Oracle 语法之 OVER (PARTITION BY ..) 及开窗函数（转载）,这个命令很实用，对于分析人员经常用到。
1、 结构：聚合函数（）over（ partition by 字段1,字段2,字段3 order by 字段 desc/asc range between 数值/date preceding/flowing and 数值/date preceding/flowing） 聚合函数可以是：sum,count,avg,max,min,...
这些排列函数提供了定义一个集合（使用 PARTITION 子句），然后根据某种排序方式对这个集合内的元素进行排列的能力，下面以scott用户的emp表为例来说明rank over partition如何使用。 1）查询员工薪水并连续求和 ...
SELECT col, AVG(value) OVER(PARTITION BY col ORDER BY col) FROM tmp1 ORDER BY col; 2、SUM ( [ DISTINCT | ALL ] expr ) OVER ( analytic_clause ) 例如： --聚合函数 SELECT col, sum(value) FROM tmp1 ...
row_number()over(partition by col1 order by col2)表示根据col1分组，在分组内部根据col2排序，而此函数计算的值就表示每组内部排序后的顺序编号（组内连续的唯一的）。 与rownum的区别在于：使用rownum进行排序的...
sum(sal) over (partition by deptno order by ename) 按部门“连续”求总和 sum(sal) over (partition by deptno) 按部门求总和 sum(sal) over (order by deptno，ename) 不按部门“连续”求总和 sum(sal) over () ...
rank ( ) over ([partition by col] order by col ) dense_rank ( ) over ([partition by col] order by col ) rownumber ( ) over ( [partition by col] order by col ) rank() 是排名的函数，该函数组内...
oracle去重复 ROW_NUMBER() over(partition by 列名1 order by 列名2)
介绍了 row_number() over(order by column asc) 函数和 row_number() over(partition by column1 order by column2 asc) 的使用实例和方法
第五篇 分析函数简述 ... Partition 子句：Partition by exp1[ ,exp2]... Partition没啥说的，功能强大参数少，主要用于分组，可以理解成select中的group by。不过它跟select语句后跟的group by 子句并不冲突。
oracle分组查询数据 select BFMBIGNAME,projectaddress,...from(select BFMBIGNAME,projectaddress,BFMSMALLNAME,row_number() over (partition by BFMBIGNAME order by REGISTERDATE) id from Projectinfo) where id;
代码如下: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 ...
mysql代码-查询每天前三条数据 按照交易价格大到小排序 相当于模拟Oracle Row_Number() OVER (partition by date ORDER BY pay desc)
1、CUME_DIST() OVER([partition_clause] order_by_clause) 返回该行在分组序列中的相对位置，返回值介于0到1之间。注意哟，如果order by的列是desc，则该分组内最大的行返回列值1，如果order by为asc，则该分组内...
For example, a query that requests data generated in the month of October 1994 can scan just the rows stored in the October 1994 partition, rather than rows generated over years of activity....