Adds TIME portion of a DT to the DATE of another

UDF that returns a DATETIME which is the concatination of the TIME portion of one DATETIME and the DATE portion of another.EXAMPLES:DECLARE @Date DATETIME, @Time DATETIMESET @Date = '7/1/03 16:00'SET @Time = '5/16/1999 9:30 AM'PRINT dbo.FN_AddDateTime(@Date,@Time )RETURNS: Jul  1 2003  9:30AMPRINT dbo.FN_AddDateTime(@Date,0)RETURNS: Jul  1 2003 12:00AM