相关疑难解决方法(0)

我有2个表AP和INV,其中两个都有[PROJECT]和[Value]列.

我想要一个查询返回这样的东西:

项目| SUM_AP | SUM_INV

我想出了下面的代码,但它返回了错误的结果(总和是错误的).

SELECT AP.[PROJECT],
SUM(AP.Value) AS SUM_AP, 
SUM(INV.Value) AS SUM_INV
FROM AP INNER JOIN INV ON (AP.[PROJECT] =INV.[PROJECT])
WHERE AP.[PROJECT] = 'XXXXX'
GROUP BY AP.[PROJECT]