Question

我有2个具有相同字段但数据不准确的表。我发现了价格上的差异，但我如何总结这个领域＆＃34;差异＆＃34;作为一个不同的领域，我可以报告方差的总和。

SELECT 
a.barcode AS BarcodeSUS, 
a.sell AS PriceSUS, 
b.price AS PricePOS, 
a.sell-b.price AS difference
FROM SUS AS a LEFT JOIN POS AS b ON a.barcode = b.barcode
ORDER BY b.price;

Answer 1

如果你想要每行的累计值，这应该可以解决问题：

SELECT
    a.barcode AS BarcodeSUS
    , a.sell AS PriceSUS
    , b.price AS PricePOS
    , a.sell-b.price AS difference
    , (SELECT
        SUM(SUS.sell-POS.price)
        FROM SUS
            LEFT JOIN POS ON SUS.barcode = POS.barcode
        WHERE SUS.barcode <= a.barcode
      ) AS [accumulated difference]
FROM SUS AS a
    LEFT JOIN POS AS b ON a.barcode = b.barcode
ORDER BY a.barcode;

如果您只想要总差额：

SELECT
    a.barcode AS BarcodeSUS
    , a.sell AS PriceSUS
    , b.price AS PricePOS
    , a.sell-b.price AS difference
    , (SELECT
        SUM(SUS.sell-POS.price)
        FROM SUS
            LEFT JOIN POS ON SUS.barcode = POS.barcode
      ) AS [total difference]
FROM SUS AS a
    LEFT JOIN POS AS b ON a.barcode = b.barcode
ORDER BY a.barcode;

“汇总报告”在此详细说明：https://support.office.com/en-gb/article/Summing-in-reports-ad4e310d-64e9-4699-8d33-b8ae9639fbf4?omkt=en-GB&ui=en-US&rs=en-GB&ad=GB

如何在MS Access中汇总字段

1 个答案: