Creating an All option for parameter value in GUID format

I am working with SRS 2005 SP1 which no longer has the "ALL" option available on parameters. I am trying to create an "ALL" entry in a picklist so it can be used in a where clause for a dataset. I have a dataset with a union statement that creates a list of CRM usersids and names and an entry with a dummy guid with the name "All". Parameter is defined as a string type, with a dataset providing a list of users (label field) and their corresponding GUID value (value field), along with the an "All" entry.

select systemuserid, fullname
from FilteredSystemUser
Union
Select '00000000-0000-0000-0000-000000000000' as systemuserid, ' All' as fullname
order by fullname

The issue I am running into is implementing logic in another dataset referencing my parameter.

All is fine in the where clause if it is structured "where ownerid in (@.Users)" but if I try to add logic to check for the "All" option "where (ownerid in (@.Users) or @.Users = '00000000-0000-0000-0000-000000000000') it errors out.

How do you impement "All" when you're dealing with a GUID type field? Thanks.

Have you looked at SSRS SP2? It puts the Select All option back. You can get it HERE

R

|||Thanks. We will be installing SP2.