如何在另一个层次结构中执行MDX成员减法？

Question

我有一个与客户和产品有关的多维数据集。 每个客户持有不同数量的产品组合。

我想计算一个客户与另一个客户在每种产品中持有的金额之间的差异（相减）。

我正在使用SQL Server Analysis Services2014。AdventureWorksDW2014的示例为：

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

这将产生以下输出：

                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

但是我想得到的是

                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，不仅可以在MDX中执行此操作，还可以允许用户选择任意两个任意客户进行比较。

这是我的第一个MDX问题，所以请让我知道是否应采用不同的框架。

Answer 1

这是所需输出的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]