Function for counting distance

Hi,
I want to create function which will return column of maximal distance.
SELECT MaxDistance(X,Y) FROM Table;
Is it possible ?
(Something like MAX function but I will have two arguments in MaxDistance on
which will be calculated distance e.g.: x-y).
Thank you very much.Are you simply attempting to identify max of a difference operation?
If so then calling MAX(x-y) will provide this. The MAX() function
belongs to the Aggregate functions. An Aggregate UDF will not be
available until SQL Server 2005.|||Like this?
SELECT MAX(ABS(x-y)) FROM Table
David Portas
SQL Server MVP
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