Please add the ability to use custom sort for the column heading sort functionality. Results that contain a column that has code table values with a user-defined sequence should sort on the sequence number rather than alphabetically on the description field. For example a grade level code table that has values like "K, 1, 2, 3... 10, 11, 12" should sort on the user-defined sequence so when you click the grade level column heading it doesn't sort like "1, 10, 11, 12, 2, 3... 9, K".