如何在另一个层次结构中执行MDX成员减法

Question

我有一个包含客户和产品的多维数据集。每个客户都持有不同数量的产品组合。

我想计算每个产品中持有的金额在一个客户和另一个客户之间的差额（减法）。

我使用的是SQL Server Analysis Services 2014。AdventureWorksDW2014的一个例子是：

select
{[Customer].[Country].&[Australia],[Customer].[Country].&[Canada]} on columns,
non empty ([Product].[Category].members, [Measures].[Internet Sales Amount]) on rows
from 
[Adventure Works]

这将生成以下输出：

                Australia       Canada
All Products    $9,061,000.58   $1,977,844.86
Accessories     $138,690.63     $103,377.85
Bikes           $8,852,050.00   $1,821,302.39
Clothing        $70,259.95      $53,164.62

然而，我想获得的是

                Australia       Canada          (Australia - Canada)
All Products    $9,061,000.58   $1,977,844.86   $7,083,155.72
Accessories     $138,690.63     $103,377.85     $35,312.78
Bikes           $8,852,050.00   $1,821,302.39   $7,030,747.61
Clothing        $70,259.95      $53,164.62      $17,095.33

理想情况下，这不仅可以在MDX中执行，还允许用户选择任意两个客户进行比较。

这是我的第一个MDX问题，所以请让我知道它是否应该以不同的方式构建。

Answer 1

以下是所需输出的MDX查询：

WITH MEMBER Australia AS
SUM({([Measures].[Internet Sales Amount], [Customer].[Country].&[Australia])}), FORMAT_STRING = "#,#.##"
MEMBER Canada AS
SUM({([Measures].[Internet Sales Amount], [Customer].[Country].&[Canada])}), FORMAT_STRING = "#,#.##"
MEMBER [Australia - Canada] AS
[Australia] - [Canada]
SELECT
{[Australia], [Canada], [Australia - Canada]} ON COLUMNS,
NON EMPTY {[Product].[Category].MEMBERS} ON ROWS
FROM [Adventure Works]