MDX query to order (and topfilter) results after/with a crossjoin - ssas

Question

I would like to order a set of results in an MDX query which also includes a crossjoin.
I have the following measures and dimensions:
[Measures].[Starts]
[Framework].[Framework Name]
[Framework].[Pathway Name]
I would like to create a list of the (corresponding) Framework and Pathway names that correspond to the top 25 numbers of [Measures].[Starts].
I have managed to output a FULL list of results using:
select [Measures].[Starts] on COLUMNS,
NON EMPTY CrossJoin(
Hierarchize({DrilldownLevel({[Framework].[Pathway Name].Children})}),
Hierarchize({DrilldownLevel({[Framework].[Framework Name].Children})})
) on ROWS
from [DataCube]
to create the following example output:
However, I need it to be sorted by the starts in descending order (and preferably only keep the top 25 results). I have tried almost everything and have failed. A google search didn't find any results.

Answer 1

Did you stumble across the TopCount function?
select [Measures].[Starts] on COLUMNS,
NON EMPTY
TopCount
(
CrossJoin
(
Hierarchize({DrilldownLevel({[Framework].[Pathway Name].Children})}),
Hierarchize({DrilldownLevel({[Framework].[Framework Name].Children})})
),
25,
[Measures].[Starts]
) on ROWS
from [DataCube]
Here's the msdn link.
H2H

Answer 2

For efficiency it is better to order the set before using the TopCount function:
WITH
SET [SetOrdered] AS
ORDER(
{DrilldownLevel([Framework].[Pathway Name].Children)}
*{DrilldownLevel([Framework].[Framework Name].Children)}
,[Measures].[Starts]
,BDESC
)
SET [Set25] AS
TOPCOUNT(
[SetOrdered]
,25
)
SELECT
[Measures].[Starts] on 0,
NON EMPTY
[Set25] on 1
FROM [DataCube];