CREATE FUNCTION [dbo].[ufnGetDocumentStatusText](@Status [tinyint])
RETURNS [nvarchar](16)
AS
-- Returns the sales order status text representation for the status value.
BEGIN
   DECLARE @ret [nvarchar](16);

   SET @ret =
       CASE @Status
           WHEN 1 THEN N'Pending approval'
           WHEN 2 THEN N'Approved'
           WHEN 3 THEN N'Obsolete'
           ELSE N'** Invalid **'
       END;
   
   RETURN @ret
END;
GO
EXEC sp_addextendedproperty N'MS_Description', N'Scalar function returning the text representation of the Status column in the Document table.', 'SCHEMA', N'dbo', 'FUNCTION', N'ufnGetDocumentStatusText', NULL, NULL
GO
EXEC sp_addextendedproperty N'MS_Description', N'Input parameter for the scalar function ufnGetDocumentStatusText. Enter a valid integer.', 'SCHEMA', N'dbo', 'FUNCTION', N'ufnGetDocumentStatusText', 'PARAMETER', N'@Status'
GO