OK i will see it
Many Thanks for your reply

>See CREATE FUNCTION in BOL
>
>>How to do that?
>>
>>>Make it into table-valued UDF.
>>>
>>>>
>>>>I have a view that calculates the Stock Balance upto current date. It is working for me.
>>>>
>>>>

>>>>SELECT     tmp.mcat_code, tmp.mat_code, Mat.mcat_desc, Mat.mat_desc, SUM(tmp.qty) AS qty
>>>>FROM         (SELECT     mcat_code, mat_code, SUM(qty) AS qty
>>>>                       FROM          mat_ob
>>>>                       GROUP BY mcat_code, mat_code
>>>>                       UNION
>>>>                       SELECT     mcat_code, mat_code, SUM(qty) AS qty
>>>>                       FROM         Purchase
>>>>                       GROUP BY mcat_code, mat_code
>>>>                       UNION
>>>>                       SELECT     mcat_code, mat_code, SUM((con_qty + wst_qty) * - 1) AS qty
>>>>                       FROM         Production
>>>>                       GROUP BY mcat_code, mat_code ) AS tmp INNER JOIN
>>>>                      Mat ON Mat.mcat_code + Mat.mat_code = tmp.mcat_code + tmp.mat_code
>>>>GROUP BY tmp.mcat_code, tmp.mat_code, Mat.mcat_desc, Mat.mat_desc
>>>>ORDER BY tmp.mcat_code, Mat.mat_desc
>>>>

>>>>
>>>>What i do if I want stock balance for certain date. Parameterized view? how to create it?
>>>>
>>>>Zahid