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 aircraft (aid NUMBER, name CLOB, distance NUMBER)
CREATE TABLE certificate (eid NUMBER, aid NUMBER)

What are the numbers of all flights coming from Los Angeles?
SELECT flno FROM flight WHERE origin = "Los Angeles"
SELECT "flno" FROM "flight" WHERE "Los Angeles" = "origin"