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Cannot call methods on uniqueidentifier

Last Modified: 2012-05-11

When I try to run the stored proc below, I keep getting the error "Cannot call methods on uniqueidentifier."

This is to do with my AND statement. All the id's are uniqueidentifiers.

Would be grateful for any help.

alter PROCEDURE usp_M05_GetAllOptionalWorkgroups
	-- Add the parameters for the stored procedure here
	@onlineCourseID Uniqueidentifier
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.

    SELECT     tbl_M04_Wgs.WorkgroupID, tbl_M04_Wgs.WorkGroupName, CONVERT(Int, tbl_M04_Wgs.WorkGroupStatus) AS Status, tbl_M05_OCOWA.OptionalAssignmentID
FROM         tbl_M04_Workgroups AS tbl_M04_Wgs LEFT OUTER JOIN
                      tbl_M05_OnlineCourseOptionalWorkGroupAssignments AS tbl_M05_OCOWA ON tbl_M04_Wgs.WorkgroupID = tbl_M05_OCOWA.OptionalWorkGroupID
WHERE     (tbl_M04_Wgs.WorkGroupStatus = '1') AND (tbl_M04_Wgs.WorkgroupID.WorkgroupID NOT IN
                          (SELECT     MandatoryWorkGroupID
                            FROM          tbl_M05_OnlineCourseMandatoryWorkGroupAssignments AS tbl_M05_OCMWA
                            WHERE      (MandatoryWorkGroupID = @onlineCourseID)))
ORDER BY tbl_M04_Wgs.WorkGroupName

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