使用 SQL 在 Ms-access 查询中运行 Total

Question

我想在我的一个访问查询中使用 SQL 计算运行总数（请不要使用 DSUM）。 我现有的查询中有 3 个字段，即 SubCategoryID、brand 和 Revenue，并且想计算每个 SubCategory 下的总收入。

我已经为它写了一个查询，但是有一些错误，我找不到纠正它的方法。

    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

您在相关子查询中重复了“发件人”：

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

我认为您不需要 from 子句中的子查询或 GROUP BY。我认为这会更好，当然也更简单：

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;

---

ADDENUM

我认为要解决品牌收入相同的问题，您需要在相关子查询中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;