CREATE TABLE aircraft (aid NUMBER, name CLOB, distance NUMBER)
CREATE TABLE employee (eid NUMBER, name CLOB, salary NUMBER)
CREATE TABLE certificate (eid NUMBER, aid NUMBER)
CREATE TABLE flight (flno NUMBER, origin CLOB, destination CLOB, distance NUMBER, departure_date TIME, arrival_date TIME, price NUMBER, aid NUMBER)

What are the names of all aircrafts that can cover more distances than average?
SELECT name FROM aircraft WHERE distance > (SELECT AVG(distance) FROM aircraft)
SELECT "name" FROM "aircraft" WHERE "distance" > (SELECT AVG("distance") FROM "aircraft")