Hello,
I have built a time utility shell dimension based on a solution from Tomislav Piasevoli (book: MDX with SSAS 2012 cookbook) however I have modified it slightly
In his example he uses two hierarchies from the same dimension. However I have modified it to use two different date dimensions, 1 hierarchy from each of the dimensions. The hierarchies must be able to be filtered by one another or combined in the same query. The problem I’m having is my solution does not work for distinct count measures. It works for every other type of measure…sum, count of rows etc etc. The filtering works perfectly when one hierarchy is filtered by the other, it’s just the distinct count that won’t show the parallel period.
I have created the shell dimension the typical way. Creating a named query like below. Creating the dimension with the default value etc etc
SELECT 0 AS ID, 'As is' AS Name
UNION ALL
SELECT 1 AS ID, 'Year ago' AS Name
Below is the original MDX and my modified MDX. If anyone can help that would be great!
--original mdx for one date dimensions.. the below works perfectly for all measures including distinct counts
SCOPE( [Time Calcs].[Calc].[Year ago]);
SCOPE([Date].[Date].MEMBERS,
[Date].[Calendar Year].[Calendar Year].MEMBERS
);
This = (ParallelPeriod([Date].[Calendar].[Calendar Year],1,[Date].[Calendar].CurrentMember),
ParallelPeriod([Date].[Calendar Weeks].[Calendar Year],1,[Date].[Calendar Weeks].CurrentMember),
[Time Calcs].[Calc].&[0]
);
EndScope;
EndScope;
--my modifed mdx for multiple date dimensions.. the below works perfectly for all measuresexcept distinct counts
SCOPE( [Time Calcs].[Calc].[Year ago]);
SCOPE([Date].[Date].MEMBERS,
[Date].[Calendar Year].[Calendar Year].MEMBERS
[Delivery Date].[Date].MEMBERS,
[Delivery Date].[Calendar Year].[Calendar Year].MEMBERS
);
This = (ParallelPeriod([Date].[Calendar].[Calendar Year],1,[Date].[Calendar].CurrentMember),
ParallelPeriod([Delivery Date].[Calendar Weeks].[Calendar Year],1,[Delivery Date].[Calendar Weeks].CurrentMember),
[Time Calcs].[Calc].&[0]
);
EndScope;
EndScope;