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

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")