Question

我想使用SQL计算我的一个访问查询中的运行总计（请不要DSUM）。我现有的查询中有3个字段，即SubCategoryID，品牌和收入，并希望计算每个SubCategory下的收入的总计。

我已经为它写了一个查询，但是有一些错误，我无法找到纠正它的方法。

    SELECT   x.SubCategoryID
            ,x.brand
            ,x.[Avg Revenue]
              ( Select Sum(x2.[Avg Revenue]) 
                From FROM [BrandRevenue] x2
                Where x2.[SubCategoryID] = x.[SubCategoryID] AND x2.[Avg Revenue] <= x.[Avg Revenue]) As [Running Sum]
    FROM (Select SubCategoryID, brand, [Avg Revenue]
          FROM [BrandRevenue]
          Order BY SubCategoryID, [Avg Revenue] DESC) As x
    Group BY x.SubCategoryID, x.brand, x.[Avg Revenue];

感谢您的帮助：）

Answer 1

你已经重复了＃34;来自＆＃34;在您的相关子查询中：

  ( Select Sum(x2.[Avg Revenue]) 
    From FROM [BrandRevenue] x2
    ...

我认为您不需要from子句中的子查询，也不需要GROUP BY。我认为这会更好，而且更简单：

SELECT  x.SubCategoryID,
        x.brand,
        x.[Avg Revenue],
        (   SELECT  SUM(x2.[Avg Revenue]) 
            FROM    [BrandRevenue] x2
            WHERE   x2.[SubCategoryID] = x.[SubCategoryID] 
            AND     x2.[Avg Revenue] <= x.[Avg Revenue]
        ) AS [Running Sum]
FROM    BrandRevenue AS x
ORDER BY x.SubCategoryID, x.[Avg Revenue] DESC;

<强> ADDENUM

我认为要解决Brands具有相同收入的问题，您需要为相关子查询添加一些额外的逻辑：

SELECT  x.SubCategoryID,
        x.brand,
        x.[Avg Revenue],
        (   SELECT  SUM(x2.[Avg Revenue]) 
            FROM    [BrandRevenue] x2
            WHERE   x2.[SubCategoryID] = x.[SubCategoryID] 
            AND  (  x2.[Avg Revenue] <= x.[Avg Revenue]
                OR  (x2.[Avg Revenue] = x.[Avg Revenue] 
                AND x2.Brand <= x.Brand
                )
        ) AS [Running Sum]
FROM    BrandRevenue AS x
ORDER BY x.SubCategoryID, x.[Avg Revenue] DESC, x.Brand;

使用SQL在Ms-access查询中运行Total

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