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Need help with a tsql query (stored proc)

rutledgj
rutledgj asked
on
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Last Modified: 2012-05-11
I have a stored proc that simplified looks like this:

BEGIN TRY
        IF @PKEY IS NULL
        BEGIN
                BEGIN TRANSACTION
                      --Add resource
                  INSERT INTO dbo.ResourceExchange (columns) VALUES (data)
            COMMIT
            SET @ErrMsg = 'A new foreign resource was encountered for which a matching Resource table entry has not been defined.  
                                          
            RAISERROR (@ErrMsg, 16, 1)                        
            RETURN      
                     
        END
      END TRY

     BEGIN CATCH                  
                IF @ErrMsg is null OR @ErrMsg = ''
                BEGIN
                  SELECT @ErrMsg = 'An error occurred while adding event information for Org = ' + @Org + ', ChartNum = ' + @Chartnum
                END
               RAISERROR (@ErrMsg, 16, 1)
               RETURN
                  
      END CATCH            





My Problem is when @PKey = null that is doesn't set the error message to the first message.
I always get the errmsg in the catch section.

Can someone tell me why this is so and how to make it work as desired?
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