查詢不包含指定的表達式作為UNION查詢中聚合函數的一部分

Question

我正在執行“聯合查詢”，將兩個單獨查詢的結果加在一起，這些查詢為我提供了來自兩個不同會計期間的數據，從而獲得12個月的滾動數字。 我收到消息“您的查詢未將指定的表達式“ Report_Header”作為聚合函數的一部分”。 我已經讀過，該字段必須最后包含在GROUP BY語句中，但是當我從任一查詢或兩個查詢中添加該字段時，如下所示，我仍然會收到消息。 救命？ 我不是程序員，我是Access用戶，所以請簡單：)。

SELECT [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].Report_Header,
       Sum([JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].SumOfCASES) AS CASES,
       Sum([JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].SumOfPurchases) AS PURCHASES
FROM [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB]

UNION ALL

SELECT [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].Report_Header,
       Sum([JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].SumOfCASES) AS CASES,
       Sum([JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].SumOfPurchases) AS PURCHASES
FROM [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2]
GROUP BY [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].Report_Header,
         [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].Report_Header

謝謝！

Answer 1

將GROUP BY [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].Report_Header放在第一個查詢下，而不是第二個查詢下。

Answer 2

您可以聚合兩個子查詢：

SELECT [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].Report_Header,
       Sum([JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].SumOfCASES) AS CASES,
       Sum([JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB].SumOfPurchases) AS PURCHASES
FROM [JOIN_IB_FREIGHT&PURCHASES_ROLLING12_SUB]
GROUP BY [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB].Report_Header

UNION ALL

SELECT [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].Report_Header,
       Sum([JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].SumOfCASES) AS CASES,
       Sum([JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].SumOfPurchases) AS PURCHASES
FROM [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2]
GROUP BY [JOIN_IB_FREIGHT&PURCHASES_Rolling12_SUB2].Report_Header;

這可能就是您想要的。 但是，它不會在兩個表的相同標題下合並信息。 為此，最簡單的方法可能是視圖。