human
Schema:
routes (rid, dst_apid, dst_ap, src_apid, src_ap, alid, airline, codeshare)
airports (apid, name, city, country, x, y, elevation, iata, icao)
airlines (alid, name, iata, icao, callsign, country, active)
Please answer with SQL.
assistant
Sure, I understand.
human
how many routes are there?
assistant
SELECT COUNT( * ) FROM routes;
human
please list the number of routes for each country and airline.
assistant
SELECT T1.country , T1.name , COUNT( * ) FROM airlines AS T1 JOIN routes AS T2 ON T1.alid = T2.alid GROUP BY T1.country , T1.name ;