over PARTITION BY查询抛出错误

Question

此查询应该适用于恕我直言：

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，我得到了：

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

Answer 1

OLAP函数在聚合之后计算，没有更多细节SomeFactMeasure要在组和中求和。

您需要在聚合结果上应用功能，标准SQL兼容SUM(SUM(SomeFactMeasure)) OVER或Teradata重用别名SUM(SmallSum) OVER。