MDX: Filtering repeated - mdx

Question

I would like to write an MDX query that only show values when a specific repeated dimesions are repeatid more tha one.
That is my mdx query:
SELECT
NON EMPTY { [Measures].[Value] } ON COLUMNS,
NON EMPTY { ([Dim Result].[Sample Number].[Sample Number].ALLMEMBERS
* [Dim Parameter].[IdParameter].[IdParameter].ALLMEMBERS ) } ON ROWS
FROM [Cube]
the result its like that:
Sample Number IdParameter Value
1 3 5
1 4 6
2 3 2
3 4 0
What i want is to get only repeated sample number values like this:
Sample Number IdParameter Value
1 3 5
1 4 6
And remove the other values that are not repeated
Sample Number IdParameter Value
2 3 2
3 4 0
I don´t know how i can do this, it is posible?
I write the next mdx:
SELECT NON EMPTY {[Measures].[Recuento Fact Result]} ON COLUMNS,
NON EMPTY { [Dim Result].[Sample Number].[Sample Number] } ON ROWS
FROM ( SELECT ({ [Dim Parameter].[IdParameter].&[420] , [Dim Parameter].[IdParameter].&[20] } ) ON COLUMNS
FROM [cube])
the result is that:
Sample Number Recount Fact Result
1 1
2 2
3 2
4 1
What i want is get only the Sample number where the recount is biger than 1
thanks for your help

Answer 1

My approach would be to create a calculated member which would hold number of distinct non-empty members per SampleNumber. Then filter out those tuples where the above count is not greater than 1.
UNTESTED (not near my system)
WITH MEMBER [Measures].CntParametersPerSampleNumber as
DistinctCount(
NonEmpty(
[Dim Parameter].[IdParameter].CHILDREN,
([Dim Result].[Sample Number].CURRENTMEMBER, [Measures].[Value])
)
)
SELECT
NON EMPTY { [Measures].[Value] } ON COLUMNS,
NON EMPTY {
Filter(
(
[Dim Result].[Sample Number].[Sample Number].ALLMEMBERS
*
[Dim Parameter].[IdParameter].[IdParameter].ALLMEMBERS
), [Measures].CntParametersPerSampleNumber>1
)
} ON ROWS
FROM [Cube]

Answer 2

You seem to have two separate questions.
The second question can be answered using the HAVING clause:
SELECT
NON EMPTY
{[Measures].[Recuento Fact Result]} ON 0,
NON EMPTY
{[Dim Result].[Sample Number].[Sample Number]}
HAVING [Measures].[Recuento Fact Result] > 1
ON 1
FROM
(
SELECT
({
[Dim Parameter].[IdParameter].&[420]
, [Dim Parameter].[IdParameter].&[20]
}) ON 0
FROM [cube]
)
For you first question you should be able to use the Filter function iteratively to detect if sample number is repeated:
WITH
SET [OrderedSampleNums] AS
Order(
[Dim Result].[Sample Number].[Sample Number].ALLMEMBERS ,
[Dim Result].[Sample Number].CurrentMember.Caption,
BASC
)
SET [RepeatedSampleNums] AS
Filter(
OrderedSampleNums ,
OrderedSampleNums.Item(
OrderedSampleNums.CurrentOrdinal-1
).Caption = [Dim Result].[Sample Number].CurrentMember.Caption
)
SET [NonRepeatedSampleNums] AS
Except(
OrderedSampleNums
,RepeatedSampleNums
)
SELECT
NON EMPTY
{[Measures].[Value]} ON 0,
NON EMPTY
[NonRepeatedSampleNums]
*
[Dim Parameter].[IdParameter].[IdParameter].ALLMEMBERS
ON 1
FROM [Cube];
Not tested but I could try to prototype something against the AdvWorks cube to explore further?