--
-- Use the Specify Values for Template Parameters 
-- command (Ctrl-Shift-M) to fill in the parameter 
-- values below.
--
-- This block of comments will not be included in
-- the definition of the function.
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		<Author,,Name>
-- Create date: <Create Date,,>
-- Description:	<Description,,>
-- =============================================
CREATE FUNCTION SharedRatioAiAj
(	
	-- Add the parameters for the function here
	@attribute1 varchar(50), @attribute2 varchar(50) 

)
RETURNS REAL 
AS
BEGIN
DECLARE @SharedRatio INT;
DECLARE @max INT;
DECLARE @sum INT;
DECLARE @distinctAi INT;
DECLARE @distinctAj INT;

	EXEC @distinctAi = DistinctAi @attribute1;	
	EXEC @distinctAj = DistinctAi @attribute2;	
	
	IF @distinctAi >= @distinctAj
		SET @max = @distinctAi
	;
	
	IF @distinctAi <= @distinctAj
		SET @max = @distinctAj
	;	

	EXEC @sum = DistinctAiAj @attribute1, @attribute2;
	SET @SharedRatio = (CAST(@sum AS REAL))/(CAST(@max AS REAL));
	RETURN @SharedRatio;
END;
GO