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

Show names for all employees with salary more than the average.
SELECT name FROM employee WHERE salary > (SELECT AVG(salary) FROM employee)
SELECT "name" FROM "employee" WHERE "salary" > (SELECT AVG("salary") FROM "employee")