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

Show origins of all flights with destination Honolulu.
SELECT origin FROM flight WHERE destination = "Honolulu"
SELECT "origin" FROM "flight" WHERE "Honolulu" = "destination"