Example: Using TD_SEQUENCED_COUNT - Teradata Vantage

WITH subtbl(flight_id, duration) AS
     (SELECT flight_id, duration FROM FlightExp)
SELECT * FROM TABLE (
     TD_SYSFNLIB.TD_SEQUENCED_COUNT(NEW VARIANT_TYPE(subtbl.flight_id),
                                    subtbl.duration)
RETURNS (flight_id INT, cnt INT,
     duration PERIOD(TIMESTAMP(6) WITH TIME ZONE))
HASH BY flight_id /* input data is redistributed on column, flight_id */
LOCAL ORDER BY flight_id, duration) /* input