dbo.ufnGetProductDealerPrice

CREATE FUNCTION [dbo].[ufnGetProductDealerPrice](@ProductID [int], @OrderDate [datetime])
RETURNS [money]
AS
-- Returns the dealer price for the product on a specific date.
BEGIN
DECLARE @DealerPrice money;
DECLARE @DealerDiscount money;

SET @DealerDiscount = 0.60 -- 60% of list price

SELECT @DealerPrice = plph.[ListPrice] * @DealerDiscount
FROM [Production].[Product] p
INNER JOIN [Production].[ProductListPriceHistory] plph
ON p.[ProductID] = plph.[ProductID]
AND p.[ProductID] = @ProductID
AND @OrderDate BETWEEN plph.[StartDate] AND COALESCE(plph.[EndDate], '12-31-9999'); -- Make sure we get all the prices!

RETURN @DealerPrice;
END;

EXEC [sys].[sp_addextendedproperty] N'MS_Description', N'Scalar function returning the dealer price for a given product on a particular order date.', N'SCHEMA', [dbo], N'FUNCTION', [ufnGetProductDealerPrice], NULL, NULL;
EXEC [sys].[sp_addextendedproperty] N'MS_Description', N'Input parameter for the scalar function ufnGetProductDealerPrice. Enter a valid ProductID from the Production.Product table.', N'SCHEMA', [dbo], N'FUNCTION', [ufnGetProductDealerPrice], N'PARAMETER', '@ProductID';
EXEC [sys].[sp_addextendedproperty] N'MS_Description', N'Input parameter for the scalar function ufnGetProductDealerPrice. Enter a valid order date.', N'SCHEMA', [dbo], N'FUNCTION', [ufnGetProductDealerPrice], N'PARAMETER', '@OrderDate';

Document was prepared on: Thursday, April 05, 2007