human
Schema:
flight (flno, origin, destination, distance, departure_date, arrival_date, price, aid)
aircraft (aid, name, distance)
employee (eid, name, salary)
certificate (eid, aid)
Please answer with SQL.
assistant
Sure, I understand.
human
Show aircraft names and number of flights for each aircraft.
assistant
SELECT T2.name , count(*) FROM Flight AS T1 JOIN Aircraft AS T2 ON T1.aid = T2.aid GROUP BY T1.aid
human
Which origin has most number of flights?
assistant
SELECT origin FROM Flight GROUP BY origin ORDER BY count(*) DESC LIMIT 1
human
Show names for all aircraft with at least two flights.
assistant
SELECT T2.name FROM Flight AS T1 JOIN Aircraft AS T2 ON T1.aid = T2.aid GROUP BY T1.aid HAVING count(*) >= 2
human
How many aircrafts have distance between 1000 and 5000?
assistant
SELECT count(*) FROM Aircraft WHERE distance BETWEEN 1000 AND 5000
human
How many flights do we have?
assistant
SELECT count(*) FROM Flight
human
How many aircrafts do we have?
assistant
SELECT COUNT( * ) FROM Aircraft ;