How to use Median function in MDX? - ssas

Question

I have a SQL Server Analysis Services cube ( Multidimensional). This cube represents Survey feedback. A student gives feedback on course for a given term (period of time ). There are 19 questions with a score from 1 to 5 and I try to get the median of these answers.
Just to precise, I am looking at the median of answer for each {Question, Course} just for one period of time ( term).
My cube model looks like this :
And the query I am running is :
with calculated member [Median] as
MEDIAN(existing NONEMPTY([Course].[COURSE NAME].children*[Survey
Question].[SURVEY QUESTION NUMBER].children),[Measures].[NUMERIC
RESPONSE])
Select non EMPTY{[Course].[COURSE NAME].children} on rows,
NON EMPTY{[Survey Question].[SURVEY QUESTION NUMBER].children*{[Measures].
[NUMERIC RESPONSE],[Median]}} on columns
from [EDW]
where [Term].[TERM].&[5515]
The result doesn't show anything on the Median as if it was null.
If anyone has an idea around this issue I will love to hear it.
Regards
Vincent

Answer 1

This is your query with a couple of small changes - unfortunately not used Median before and I do not have AdvWks to test on so feeling around in the dark a little:
WITH
MEMBER [Measures].[MYMedian] AS
MEDIAN(
NONEMPTY(
[Course].[COURSE NAME].[COURSE NAME].MEMBERS
*[Survey Question].[SURVEY QUESTION NUMBER].[SURVEY QUESTION NUMBER].MEMBERS
,[Measures].[NUMERIC RESPONSE]
)
,[Measures].[NUMERIC RESPONSE]
)
SELECT
NON EMPTY
[Course].[COURSE NAME].children on rows,
NON EMPTY
[Survey Question].[SURVEY QUESTION NUMBER].children
*{
[Measures].[NUMERIC RESPONSE]
,[Measures].[MYMedian]
}
on columns
FROM [EDW]
WHERE [Term].[TERM].&[5515];