Problem using MDX functions in Answers Filter

Question

I'm using OBIEE 10.1.3.2.
I'm using an Essbase cube as my datasource (aggregate storage).
My level 0 members in my Date dimension are of the format yyyy-mm-dd (e.g., 2011-08-13)
I have a dashboard prompt selecting the date from a calendar which returns the date and time (yyyy-mm-dd hh:mm:ss). So naturally I can't do just a straight equals between the prompt value and the member value.
What I've written in the filter sql in Answers is: Date.Days = Evaluate('SUBSTRING(%1,1,10)','@{varStartDate}')
The log shows the following:
-------------------- SQL Request:
SELECT Date.Days saw_0, main.total_completed_orders saw_1 FROM SIKAgg2 WHERE Date.Days = Evaluate('SUBSTRING(%1,1,10)','2011-08-09 00:00:00') ORDER BY saw_0
-------------------- Sending query to database named mezen (id: <<9648>>):
With
set [Date4] as 'Filter([Date].Generations(4).members, (([Date].CurrentMember.MEMBER_ALIAS = "2011-08-09 00:00:00" OR [Date].CurrentMember.MEMBER_Name = "2011-08-09 00:00:00")))'
select
{ [Measures].[total_completed_orders]
} on columns,
NON EMPTY {SUBSTRING(,1,10)SUBSTRING(,1,10)SUBSTRING(,1,10){[Date4]}} properties ANCESTOR_NAMES, GEN_NUMBER on rows
from [SIKAgg2.main]
So with all that being said it doesn't appear that the MDX function SUBSTRING is actually doing anything.
1) Am I using the function incorrectly?
2) Is there a better way to do this? I really just need to get rid of the time portion of the variable from the date prompt.
Any help/guidance would be greatly appreciated. Spending too much time with trial and error approach.
Thanks,
Brad

Answer 1

Brad,
Try this way..In OBIEE RPD - Physical Layer for level 0 members in my Date dimension. Double click this member and check its type. Change the type to 'DATE' from 'DATETIME'. Delete the Date Dimension in BMM layer & Presentation Layer for again drag and drop from Physical Layer after changing the Type in physical layer.
Normal way of building the RPD using Essbase
Something similar to this http://www.rittmanmead.com/2009/03/dates-timestamp-and-oracle-bi-answers-filters/
This shud solve your timestamp problem everywhere. This is one of the most common problem for Oracle sources. I have essbase as a source but unfortunately I can't replicate it as this is not having time level.
Let me know if this solves your problem...
In case the type is DATE only in RPD then I'll try to provide a diff soln here.
Hope this helps