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

Can you give a histogram to compare the number of flights to each destination city?, order by the the number of destination in descending.
SELECT destination, COUNT(destination) FROM flight GROUP BY destination ORDER BY COUNT(destination) DESC
SELECT "destination", COUNT("destination") FROM "flight" GROUP BY "destination" ORDER BY COUNT("destination") DESC