Date parameters using MDX query

Hello experts,
Not sure if this question falls under SSAS or SSRS but I'm writing it here for now and hopefully get the answer.
I'm using SSAS cube to develop a report using SSRS and this is the first time I'm doing it. I want to filter records based on date range and did some research online. My report contains two datasets:
1. dsMain dataset -> it contains all the field which I want to use in the report and added a parameter thru query designed with following settings:
Dimension : Dates
Hierachary : Date
Operator : Range (Inclusive)
Parameters : checked
it created two parameters called FromDatesDate and toDatesDate
2. I created another dataset called dsDate and wrote a custom query (found at following link) and changed FromDatesDate and ToDatesDate using this date dataset
https://jsimonbi.wordpress.com/2011/03/22/using-a-date-parameter-in-ssrs-with-mdx/
Query for dsDate
WITH
MEMBER DateValue
AS
[Dates].[Date].CurrentMember.UniqueName
MEMBER DateLabel
AS
[Dates].[Date].CurrentMember.Name
SELECT
[Measures].[DateValue],
[Measures].[DateLabel]
} ON 0,
[Dates].[Date].[Date]
} ON 1
FROM [myCube]
Here is the value returned by dsDate dataset (above query)
DateValue DateLabel
06/04/1980 [Dates].[Date].&[29375]
06/04/1980
06/05/1980 [Dates].[Date].&[29376]
06/05/1980
06/06/1980 [Dates].[Date].&[29377]
06/06/1980
06/07/1980 [Dates].[Date].&[29378]
06/07/1980
06/08/1980 [Dates].[Date].&[29379]
06/08/1980
06/09/1980 [Dates].[Date].&[29380]
06/09/1980
06/10/1980 [Dates].[Date].&[29381]
06/10/1980
06/11/1980 [Dates].[Date].&[29382]
06/11/1980
06/12/1980 [Dates].[Date].&[29383]
06/12/1980
06/13/1980 [Dates].[Date].&[29384]
06/13/1980
Here is what I changed in FromDatesDate and ToDatesDate parmeter:
Under Available Values tab:
Dataset : dsDate
Value Field : DateValue
Label Field : DateLabel
Here are my questions:
1. I want to use date/time parameter so that user doesn't have to scroll thru whole date dimension.
2. I changed the FromDatesDate and ToDatesDate to date/time parameter, removed the values from Available values tab and made the following changes on Parmaeters expression under dsMain dataset
=”[Dates].[Date].&[” + Format(CDate(Parameters!FromDatesDate.Value),”MM/dd/yyyy”)
+ “T00:00:00]”
=”[Dates].[Date].&[” + Format(CDate(Parameters!ToDatesDate.Value),”MM/dd/yyyy”)
+ “T00:00:00]”
Now when I run the report I get following error:
Query (1, 55) The restrictions imposed by the CONSTRAINED flag in the STRTOMEMBER function are violated.
I think the reason is by changing parameter to date/time, now I cannot get "DateValue" which is required for the query.
1. What is the best way to work with date parameters?
Hope it is all clear and look forward to hear from experts.
Thanks,
P
mark it as answer if it answered your question :)

Hi Parry2k,
In Analysis Services, a member can be referenced by either its member name or by its member key. The member key is used by the dimension to specifically identify a given member. The ampersand (&) character is used in MDX to differentiate
a member key from a member name. In this scenario, the datetime is member name, not the member key. So you should not add "&".
Reference:
Member Names and Keys
Simon Hou
TechNet Community Support

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In my Date dimension table DateKey will be 1,2,3,4........
DateKey 1= 22nd Jan,2010
DateKey 2= 23rd Jan,2010
DateKey 3= 24th Jan,2010.
Now i want to get Today date(Ex.22jan2014) and LastYearSameDay date(Ex.23jan2014) by using mdx query.
Can you please suggest me.
Sudhan

Hi Sudhan,
According to your description, you want to get Today date and LastYearSameDay date by using mdx query. In this case, you can use Now() function and DateAdd function to get the result. Here is a sample query for your reference.
WITH MEMBER Measures.Today AS vba!Now(), FORMAT_STRING="Short Date"
MEMBER Measures.Yesterday AS Dateadd("d",-1,Measures.Today), FORMAT_STRING="Short Date"
SELECT {Measures.Today,Measures.Yesterday} on 0
FROM
[Adventure Works]
Result:
Regards,
Charlie Liao
TechNet Community Support

Date parameters using MDX query

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