I need to filter this MDX result set - mdx

Question

I am looking to filter the result set below such that I only show results where Dimension A Value 1 have a count of 1, regardless of the value of count for Dimension A Value 2
Dimension A Value 1 Dimension A Value 2
Entity ID Count Count
11 1
78 1
90 1
101 1
114 1
118 1
125 1
134 1
140 1
161 1
169 1
186 1 2
The filtered set would look like
Dimension A Value 1 Dimension A Value 2
Entity ID Count Count
11 1
78 1
90 1
101 1
118 1
125 1
140 1
161 1
169 1
186 1 2
the mdx is
WITH
SET [~COLUMNS] AS
{[Dimension A].[Dimension A].[Value 1], [Dimension A].[Dimension A].[Value 2]}
SET [~ROWS] AS
{[Entity].[Entity].[Entity ID].Members}
SELECT
NON EMPTY CrossJoin([~COLUMNS], {[Measures].[Count]}) ON COLUMNS,
NON EMPTY [~ROWS] ON ROWS
FROM [My Cube]
I've been playing around with Filter and NonEmpty but I'm new to MDX and my sql brain is hurting. I suppose this is probably trivial to someone with a lot of MDX under their belt but I'm failing. Be gentle this is my first question

Answer 1

You can try a HAVING clause:
WITH
SET [~COLUMNS] AS
{
[Dimension A].[Dimension A].[Value 1],
[Dimension A].[Dimension A].[Value 2]
}
MEMBER [Measures].[CountValue1] AS //<<<<this is new <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
(
[Measures].[Count],
[Dimension A].[Dimension A].[Value 1]
)
SELECT
NON EMPTY
CrossJoin(
[~COLUMNS]
, {[Measures].[Count]}
) ON COLUMNS,
NON EMPTY
[Entity].[Entity].[Entity ID].MEMBERS
HAVING [Measures].[CountValue1] = 1 //<<CHANGED TO NEW MEASURE
ON ROWS
FROM [My Cube];
If you can use HAVING rather than FILTER you will likely see a performance improvement - particularly if your scripts become more complex:
https://blog.crossjoin.co.uk/2006/01/04/the-having-clause/
Just to be complete the slower FILTER version would be this:
WITH
SET [~COLUMNS] AS
{
[Dimension A].[Dimension A].[Value 1],
[Dimension A].[Dimension A].[Value 2]
}
//>>>>>> following is new >>>>>>>>>>>>>>>>>>>>>
MEMBER [Measures].[CountValueNEW] AS
(
[Measures].[Count],
[Dimension A].[Dimension A].[Value 1]
)
SELECT
NON EMPTY
[~COLUMNS]
*{[Measures].[Count]}
ON 0,
NON EMPTY
FILTER(
[Entity].[Entity].[Entity ID].MEMBERS,
[Measures].[CountValueNEW] = 1
)
ON 1
FROM [My Cube];

Answer 2

Your query should be like
Select ([Dimension A].[AttributeHierarchy1].[AttributeHierarchy1],{[Measures].[Value1],[Measures].[Value2]}) on columns,
filter([Dimension B].[EntityID].[EntityID],[Measures].[Value1]=0)
on rows
from yourcube
However there can be an issue. For example your dimesnion has two values A and B, for a particular row , A,value1 =1 but B, Value1=0, this row will appear as A qulifies for it and B gets carried over.
Edit
Lets take an example I want to see Internet Sales for Bottles and Cages haveing sales more than 150$
My initial query
select
([Product].[Subcategory].[Subcategory],[Measures].[Internet Sales Amount]
)
on columns,
[Customer].[City].[City]
on rows
from
[Adventure Works]
Result
Now modify the query
select
([Product].[Subcategory].[Subcategory],[Measures].[Internet Sales Amount]
)
on columns,
filter
(
[Customer].[City].[City], [Measures].[Internet Sales Amount]>150
)
on rows
from
(select [Product].[Subcategory].&[28] on 0 from [Adventure Works])
Result