使用 MS Access SQL 2013 创建运行总计

Question

我正在尝试使用 Access SQL 创建一个运行总计我已经编写了以下 SQL 语句，但它不起作用。我的 SQL 不好，我正在努力学习是否有人可以帮助我。如果我写完后能在设计视图中看到它也很好。

SELECT
    SubQrySUMPermCashIN.Date
    ,SubQrySUMPermCashIN.PayeeID
    ,SubQrySUMPermCashIN.PermCashIn
    ,SubQrySUMPermCashIN.Year
    ,Sum(tblTest.PermCashIn) AS RunningTotal
FROM
    SubQrySUMPermCashIN
INNER JOIN
    SubQrySUMPermCashIN AS tblTest
ON
    SubQrySUMPermCashIN.Date = tblTest.Date
WHERE
    ((SubQrySUMPermCashIN.Date)>=[tblTest]![Date])
GROUP BY
    SubQrySUMPermCashIN.Date
    ,SubQrySUMPermCashIN.PayeeID
    ,SubQrySUMPermCashIN.PermCashIn
    ,SubQrySUMPermCashIN.Year;

Answer 1

我倾向于使用相关子查询进行此类计算：

SELECT spc.Date, spc.PayeeID, spc.PermCashIn, spc.Year,
       (SELECT SUM(sp2.PerCashIn)
        FROM SubQrySUMPermCashIN as spc2
        WHERE spc2.Date <= sp.Date
       ) as RunningTotal
FROM SubQrySUMPermCashIN as spc;

这会同时保存join 和外部group by。请注意，表别名的使用还使查询更易于编写和阅读。

Answer 2

我无权对此进行测试，但请尝试以下代码：

SELECT
    SubQrySUMPermCashIN.Date
    ,SubQrySUMPermCashIN.PayeeID
    ,SubQrySUMPermCashIN.PermCashIn
    ,SubQrySUMPermCashIN.Year
    ,Sum(tblTest.PermCashIn) AS RunningTotal
FROM
    SubQrySUMPermCashIN
INNER JOIN
    SubQrySUMPermCashIN AS tblTest
ON
    SubQrySUMPermCashIN.Date >= tblTest.Date
GROUP BY
    SubQrySUMPermCashIN.Date
    ,SubQrySUMPermCashIN.PayeeID
    ,SubQrySUMPermCashIN.PermCashIn
    ,SubQrySUMPermCashIN.Year;

注意：您的 WHERE 与您的 JOIN ... ON ... 相矛盾；对其进行了修改，使ON 包含正确的定义，并且不再需要WHERE。