sql - 计算隐藏列的总和

Question

我有一张桌子，看起来像：

罢工率基本上可以计算出 OrdersTaken - OrdersFrom，但我不想显示这两列，所以我只想要代码 + 罢工率调用

但是当我禁用显示时，它会提示我要求输入它的数字，所以它不再能够找到它了？

我的查询类似于：

SELECT T_Temp_RestrictedDiaryCalls.AccreditedDomainCode,
    Count(T_Temp_RestrictedProductSalesHistory.CustomerCode)
        AS OrdersTaken, qry_TargetReports.CountOfCustomerCode 
        AS OrdersFrom, [OrdersTaken]-[OrdersFrom] 
        AS [Strike Rate (Calls)]

    FROM qry_TargetReports 
        INNER JOIN (T_Temp_RestrictedDiaryCalls
        INNER JOIN T_Temp_RestrictedProductSalesHistory 
            ON (T_Temp_RestrictedDiaryCalls.CallDate = T_Temp_RestrictedProductSalesHistory.EntryDate)
                AND (T_Temp_RestrictedDiaryCalls.CustomerCode = T_Temp_RestrictedProductSalesHistory.CustomerCode)) 
            ON qry_TargetReports.AccreditedDomainCode = T_Temp_RestrictedDiaryCalls.AccreditedDomainCode

    GROUP BY T_Temp_RestrictedDiaryCalls.AccreditedDomainCode, qry_TargetReports.CountOfCustomerCode;

但老实说，MsAccess 为我生成了它。我只需要一种方法来隐藏两列，同时仍然计算总和，干杯。

Answer 1

使用您现在拥有的所有内容，除了[OrdersTaken]-[OrdersFrom]作为子查询并计算父查询中的差异。

问题在于[OrdersTaken]和都是字段表达式的别名，而原始查询在计算 时试图在子句[OrdersFrom]中使用这些别名。通常 Access 不会让您这样做。SELECT[Strike Rate (Calls)]

SELECT
    sub.AccreditedDomainCode,
    (sub.OrdersTaken - sub.OrdersFrom) AS [Strike Rate (Calls)]
FROM
    (
        SELECT
            rdc.AccreditedDomainCode,
            Count(rpsh.CustomerCode) AS OrdersTaken,
            tr.CountOfCustomerCode AS OrdersFrom
        FROM
            qry_TargetReports AS tr
            INNER JOIN (T_Temp_RestrictedDiaryCalls AS rdc
            INNER JOIN T_Temp_RestrictedProductSalesHistory AS rpsh
            ON
                    (rdc.CallDate = rpsh.EntryDate)
                AND (rdc.CustomerCode = rpsh.CustomerCode)) 
            ON tr.AccreditedDomainCode = rdc.AccreditedDomainCode
        GROUP BY rdc.AccreditedDomainCode, tr.CountOfCustomerCode
    ) AS sub;

Answer 2

查看 SELECT ：有 4 个部分对应于 4 个结果列

T_Temp_RestrictedDiaryCalls.AccreditedDomainCode,
Count(T_Temp_RestrictedProductSalesHistory.CustomerCode) AS OrdersTaken,
qry_TargetReports.CountOfCustomerCode AS OrdersFrom
[OrdersTaken]-[OrdersFrom] AS [Strike Rate (Calls)]

如果您只想要第 1 和第 4 行，只需删除第 2 和第 3 行：

T_Temp_RestrictedDiaryCalls.AccreditedDomainCode,
[OrdersTaken]-[OrdersFrom] AS [Strike Rate (Calls)]

但是，您还必须将 OrdersTaken 和 OrdersFrom 替换为它们的定义：

T_Temp_RestrictedDiaryCalls.AccreditedDomainCode,
Count(T_Temp_RestrictedProductSalesHistory.CustomerCode) # this is what OrdersTaken stands for
    - qry_TargetReports.CountOfCustomerCode # this is what OrdersFrom stands for
AS [Strike Rate (Calls)]

请注意，您还可以设置

Strike Rate (Calls):Count(T_Temp_RestrictedProductSalesHistory.CustomerCode)-qry_TargetReports.CountOfCustomerCode

在编辑器的查询定义中，这将执行相同的操作。