Auto calculating columns in a sql table based on prevoius row data

Question

I am using sql server as back-end for developing my application in asp.net c#. Now i need to create a table with an auto calculating column(closing balance) as shown below:<

Answer 1

Seems to me like you don't need really need recursion...

CREATE FUNCTION dbo.GetClosingBalance(@Date date) RETURNS int AS
BEGIN
    DECLARE @RetVal int
    SELECT
        @RetVal = SUM([in stock]) - SUM([out stock])
    FROM
        x
    WHERE
        [Date] <= @Date
    RETURN @RetVal
END

ALTER TABLE x ADD COLUMN [closing balance] AS (dbo.GetClosingBalance([Date]))