Analysis Services - calculated member - count by dimension key range

Hello I´m struggling with MS SSAS... simplified I have two tables in my Data-view. T1 holds a PK and a Date. T2 holds a PK, a FK of T1, and some numbers.

I created an dimension from T1 with its two attributes. So I can created a Cube to aggregate the Data of T2 by date and id of T1. So far so good.

What I want to do next is the aggregation of just a part of that data. Example: "Show me the aggregated data of T2 records that have a FK >=970"

So I tried to write a calculated measure, but failed. I searched around the web but I found nothing worked so far...

I hope someone can help with a hint.

Solution

If i understood correctly, your date Dimension is T1.

In your dimension you should have a dimension Key setup, i'll assume you did it at the PK column. Within the properties you can define 3 things for that attribute. KeyColumns NameColumns ValueColumns

Make sure your KeyColumns is the PK Column. And should be a OrderBy property you should make sure is set to "Key"

After that if your PKs are sequencial(they really should!) you can make a MDX query like this:

SELECT
{ [Measures].[YOURMEASURE] } ON COLUMNS,
{ [T1].&[970] : NULL } ON ROWS
FROM [MyCube]

EDIT: Sure. Add to your Calculation in the Cube.

CREATE MEMBER CURRENTCUBE.[Measures].[MyOver970Measure]
AS
AGGREGATE({ [T1].&[970] : NULL },[Measures].[YOURMEASURE])
,VISIBLE=1;