超过 PARTITION BY 查询抛出错误

Question

这个查询应该有效恕我直言：

SELECT        
    Year                             
    ,Month 
    ,SUM(SomeFactMeasure) OVER (PARTITION BY Year BY Month) AS BigSum
    ,SUM(SomeFactMeasure) AS SmallSum 
FROM SomeTable
GROUP BY 1, 2;

不幸的是，我得到：

SELECTED NON-AGGREGATE VALUES MUST BE PART OF THE ASSOCIATED GROUP

Answer 1

OLAP 函数是在聚合之后计算的，没有更多细节SomeFactMeasure 要在组总和中求和。

您需要在聚合结果上应用函数，符合标准 SQL SUM(SUM(SomeFactMeasure)) OVER 或 Teradata 重用别名 SUM(SmallSum) OVER.

超过 PARTITION BY 查询抛出错误

over PARTITION BY query throws error

teradata