获得每个项目的计算（美元货币转换）总计

Question

我有一个查询来获取每个项目的总和，但是当我将SUM(d.AMT)更改为(SUM(d.AMT) * e.EXCHANGE_RATE) [USD Amount]以将总数转换为美元时，我会遇到错误：

  

列'EXCHANGE_RATE.EXCHANGE_RATE'在选择列表中无效   因为它不包含在聚合函数或   GROUP BY子句。

。有人可以解决我的问题吗？谢谢大家！

SELECT d.ITEM_NO, h.ITEM_TYPE, h.ITEM_STATUS, d.CURRENCY,SUM(d.AMT)--(SUM(d.AMT) * e.EXCHANGE_RATE) [USD Amount]
FROM ITEM_HDR h
JOIN ITEM_DET d ON h.ITEM_NO = d.ITEM_NO
JOIN EXCHANGE_RATE e ON d.CURRENCY = e.CURRENCY_FROM
GROUP BY d.ITEM_NO, h.ITEM_TYPE, h.ITEM_STATUS, d.CURRENCY

Answer 1

你需要在之前乘以：

SELECT d.ITEM_NO, h.ITEM_TYPE, h.ITEM_STATUS, d.CURRENCY,
       SUM(d.AMT * e.EXCHANGE_RATE) as [USD Amount]
FROM ITEM_HDR h JOIN
     ITEM_DET d
     ON h.ITEM_NO = d.ITEM_NO JOIN
     EXCHANGE_RATE e 
     ON d.CURRENCY = e.CURRENCY_FROM
GROUP BY d.ITEM_NO, h.ITEM_TYPE, h.ITEM_STATUS, d.CURRENCY;

但是，如果您想为每个项目添加此项，请简化SELECT和GROUP BY：

SELECT d.ITEM_NO, h.ITEM_TYPE,
       SUM(d.AMT * e.EXCHANGE_RATE) as [USD Amount]
FROM ITEM_HDR h JOIN
     ITEM_DET d
     ON h.ITEM_NO = d.ITEM_NO JOIN
     EXCHANGE_RATE e 
     ON d.CURRENCY = e.CURRENCY_FROM
GROUP BY d.ITEM_NO, h.ITEM_TYPE;

Answer 2

更改 (SUM(d.AMT) * e.EXCHANGE_RATE) [USD Amount] 至 SUM(d.AMT * e.EXCHANGE_RATE) AS [USD Amount]