CREATE TABLE aircraft (aid NUMBER, name VARCHAR2, distance NUMBER)
CREATE TABLE employee (eid NUMBER, name VARCHAR2, salary NUMBER)
CREATE TABLE certificate (eid NUMBER, aid NUMBER)
CREATE TABLE flight (flno NUMBER, origin VARCHAR2, destination VARCHAR2, distance NUMBER, departure_date DATE, arrival_date DATE, price NUMBER, aid NUMBER)

How many flights with price higher than 300 for each destination city? Return a bar chart.
SELECT destination, COUNT(destination) FROM flight WHERE price > 300 GROUP BY destination
SELECT "destination", COUNT("destination") FROM "flight" WHERE "price" > 300 GROUP BY "destination"