在 MDX 中使用“不同定义”计算相同度量的差异

Posted 2023-03-25

【中文标题】在 MDX 中使用“不同定义”计算相同度量的差异

【英文标题】：calculating the difference of the same measure with a 'different definition' in MDX

【发布时间】：2014-06-16 04:00:40

【问题描述】：

我想用“不同的定义”计算相同度量的差异 这是我尝试过的，但它不起作用：

 WITH MEMBER [Measures].[Births] AS 
'[Measures].[type], [dimType].[TypeL].[Births]' 
 MEMBER [Measures].[Deaths] AS 
'[Measures].[type], [dimType].[TypeL].[Deaths]' 
 MEMBER [Measures].[Population_Growth] AS 
'[Measures].[Births] - [Measures].[Deaths]' 
 SELECT [Measures].[Population_Growth] ON COLUMNS, 
 [dimTime].[year] ON ROWS FROM [Population]

运行此查询时，我每年都会得到 Population_Growth = 0。 我是 MDX 新手，不知道自己做错了什么？

【参考方案1】：

不确定。在 MDX 中，您已经评估了一个元组。如果您只有一个成员，则不需要括号，但如果您有多个成员，则需要它们。可以试试吗

WITH 
  MEMBER [Measures].[Births] AS ([Measures].[type], [dimType].[TypeL].[Births]) 
  MEMBER [Measures].[Deaths] AS ([Measures].[type], [dimType].[TypeL].[Deaths]) 
  MEMBER [Measures].[Population_Growth] AS [Measures].[Births] - [Measures].[Deaths]
SELECT
 [Measures].[Population_Growth] ON COLUMNS, 
 [dimTime].[year] ON ROWS 
FROM [Population]

如果这不起作用，则可能是 [type] 度量：

WITH 
  MEMBER [Measures].[Births] AS ([Measures].defaultmember, [dimType].[TypeL].[Births]) 
  MEMBER [Measures].[Deaths] AS ([Measures].defaultmember, [dimType].[TypeL].[Deaths]) 
  MEMBER [Measures].[Population_Growth] AS [Measures].[Births] - [Measures].[Deaths]
SELECT
 [Measures].[Population_Growth] ON COLUMNS, 
 [dimTime].[year] ON ROWS 
FROM [Population]

如果这不起作用，我们可以检查成员 [dimType].[TypeL].[Births] 是否正常。

WITH 
  MEMBER [Measures].[Population_Growth] AS [dimType].[TypeL].[Births].name
SELECT
 [Measures].[Population_Growth] ON COLUMNS, 
 [dimTime].[year] ON ROWS 
FROM [Population]

应该返回 'Births'