CREATE TABLE airport (id NUMBER, City CLOB, Country CLOB, IATA CLOB, ICAO CLOB, name CLOB)
CREATE TABLE operate_company (id NUMBER, name CLOB, Type CLOB, Principal_activities CLOB, Incorporated_in CLOB, Group_Equity_Shareholding FLOAT)
CREATE TABLE flight (id NUMBER, Vehicle_Flight_number CLOB, Date CLOB, Pilot CLOB, Velocity FLOAT, Altitude FLOAT, airport_id NUMBER, company_id NUMBER)

Show me the correlation about how many companies operates airlines in each airport?
SELECT T1.id, COUNT(*) FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id JOIN airport AS T3 ON T2.airport_id = T3.id GROUP BY T3.id
SELECT "T1"."id", COUNT(*) FROM "operate_company" "T1" JOIN "airport" "T3" ON "T2"."airport_id" = "T3"."id" JOIN "flight" "t2" ON "T1"."id" = "T2"."company_id" GROUP BY "T3"."id"