String Manipulation in SQL Server

In reference to the code below, I am trying to find the GroupDescription 'Test: New Members 07/09/2009'.  The reason the @strDate variable was introduced was to allow for different dates to be entered.

When I run the query below however it returns no results yet when I run for the literal Group Description of  'Test: New Members 07/09/2009' it returns one row.

Can you help me correct this.
declare @studyID int
declare @studyGroupID int
declare @strDate varchar
 
/** Set studyID **/
set @studyID = 7
set @strDate = '07/09/2009' 
 
select @studyGroupID = StudyGroupID
from StudyGroups (nolock)
where GroupDescription = 'Test: New Members ' + @strDate
and StudyID = @studyID

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onaled777Asked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
>declare @strDate varchar
must be
declare @strDate varchar(20)
0
Guy Hengel [angelIII / a3]Billing EngineerCommented:
explanation:
declare @strDate varchar
is the same as
declare @strDate varchar(1)
0

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onaled777Author Commented:
Ahh Thank you!  I understand completely and it works.
0
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Microsoft SQL Server 2008

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