应用成员函数设置的功能

Question

是否有一个mdx函数将一个set作为参数，一个成员函数作为一个单独的参数，并返回一个具有该函数的集合适用于成员？

我有一组选定的日期，并希望返回一个日期相同的集合少于1年，因此需要在每个成员上使用Parallelperiod。

Answer 1

这种方法似乎没问题：

WITH 
  SET [fewDays] AS 
      [Date].[Calendar].[Date].&[20070121]
    : 
      [Date].[Calendar].[Date].&[20070127] 
  SET [theDates] AS 
    Generate
    (
      [fewDays] AS s
     ,{ParallelPeriod
      (
        [Date].[Calendar].[Calendar Year]
       ,1
       ,s.CurrentMember
      )}
    ) 
SELECT 
  {} ON 0
 ,[theDates] ON 1
FROM [Adventure Works];

我认为这更漂亮，它避免了生成因此可能更快：

WITH 
  SET [fewDays] AS 
      [Date].[Calendar].[Date].&[20070121]
    : 
      [Date].[Calendar].[Date].&[20070127] 
  MEMBER [Measures].[cntMembers] AS 
    [fewDays].Count 
  SET [LastMemLastYear] AS 
    {
      ParallelPeriod
      (
        [Date].[Calendar].[Calendar Year]
       ,1
       ,Tail([fewDays]).Item(0)
      )
    } 
  SET [theDates] AS 
      [LastMemLastYear].Item(0).Lag(
      [Measures].[cntMembers])
    : 
      [LastMemLastYear].Item(0) 
SELECT 
  {} ON 0
 ,[theDates] ON 1
FROM [Adventure Works];