MDX Dynamic Set Filter Measuers - mdx

Question

I am new to MDX.
I want to create a Dynamic Set on SSAS (SQL Server 2014) where this Set filters all Measures
where Measure Date is greater than the current selected date.
Is this possible with a Dynamic Set if not which other solutions are possible?
ID|Date |MeasureVal
1 |15.01.2014| 100
2 |16.01.2014| 150
3 |20.02.2014| 500
4 |21.02.2014| 150
So when the User select this Set and the Date Filter is on 16.01.2014 it should show return Measures with Date greater than 16.01.2014.
From the above example it should return Measures with ID 3,4
Here is my Try
CREATE DYNAMIC SET CURRENTCUBE.[MyTestSet]
AS
Filter (
[Production Time].[Time Hierarchy].[Date].AllMembers ,
( [Production Time].[Time Hierarchy].[Date].CurrentMember.member_caption > "Current selected Date?" )
;

Answer 1

Maybe this?
CREATE DYNAMIC SET CURRENTCUBE.[MyTestSet]
AS Filter(
[Production Time].[Time Hierarchy].[Date].Members as dtSet,
dtSet.Item(
dtSet.CurrentOrdinal-1
).member_caption > "Current selected Date?"
);
But I don't think member_caption will return a number so how will > function?
Usually if you want a set of dates greater than a specified member in mdx you use the range operator, which is a colon : couple with a null on one side of the colon. So here are two example:
WITH
SET [GreaterThanX] AS
{
[Production Time].[Time Hierarchy].[Date].[01 Jan 2014]
:
null
}
SET [LessThanX] AS
{
null
:
[Production Time].[Time Hierarchy].[Date].[01 Jan 2014]
}
SELECT
{} ON 0,
[GreaterThanX] ON 1
//[LessThanX] ON 1
FROM myCube;
Try the above - the first should give you all dates after 01 Jan whereas the second all dates less than.
note: when using the : operator it is important that the specified member, in this case [Production Time].[Time Hierarchy].[Date].[01 Jan 2014] exists in the cube - if it doesn't exist no error occur but the expression is evaluated as null:null i.e. all dates will be returned.