The first query has an estimated cost of 100,000,000 and is offloaded to a HeatWave cluster for execution:
SELECT flightno, departure, country FROM flight JOIN airport_geo ON 'from'=airport_id;
The second query has an estimated cost of 10,000 and is NOT offloaded to the Heatwave cluster for execution:
SELECT DISTINCT country FROM airport_geo ORDER BY country;
Which two methods can offload the second query to the Heatwave cluster for execution? (Choose two.)