MDX for Last 2 Members in Fact, not from Dim

Question

I'm trying to write an mdx that will give me the last 2 Products sold in my Fact table, but instead of that, I always get the latest 2 Products in my Dim table sold.
I've googled it, but cannot get the right mdx, so I can retrieve the last records in my fact. So far I have:
WITH MEMBER [last] as
FILTER([DIM_PRODUCT].[PRODUCT_ID].[PRODUCT_ID].MEMBERS,[Measures].[Row Count]).item(
FILTER([DIM_PRODUCT].[PRODUCT_ID].[PRODUCT_ID].MEMBERS,[Measures].[Row Count]).count-1).name
MEMBER [previous] as
FILTER([DIM_PRODUCT].[PRODUCT_ID].[PRODUCT_ID].MEMBERS,[Measures].[Row Count]).item(
FILTER([DIM_PRODUCT].[PRODUCT_ID].[PRODUCT_ID].MEMBERS,[Measures].[Row Count]).count-2).name
SELECT {[last],[previous]} on COLUMNS
FROM [Cube]
where [DIM_WAREHOUSE].[WAREHOUSE_ID].&[2]
Any help will be highly appreciated. Thanks!

Answer 1

Hi XanderAS,
According to your description, you want to query the last two products, right? In this case, we can use
Tail function which returns a subset from the end of a set to achieve you requirement. Here is a sample MDX query on Adventure works for your reference.
with MEMBER [Measures].[LastMember Name] as [Date].[Calendar].CURRENTMEMBER.UNIQUE_NAME
select {[Measures].[Internet Sales Amount],[Measures].[LastMember Name]} on 0
,{TAIL([Date].[Calendar].[Date].members,2)} on 1
from [Adventure Works]
Regards,
Charlie Liao
TechNet Community Support