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)
CREATE TABLE certificate (eid NUMBER, aid NUMBER)

Show ids for all employees with at least 100000 salary.
SELECT eid FROM employee WHERE salary > 100000
SELECT "eid" FROM "employee" WHERE "salary" > 100000