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
show all airports in China.
assistant
SELECT * FROM airports WHERE country = 'China';
human
which one is listed as the source airport of the most routes?
assistant
SELECT T1.name FROM airports AS T1 JOIN routes AS T2 ON T1.apid = T2.src_apid WHERE T1.country = "China" GROUP BY T1.name ORDER BY COUNT( * ) DESC LIMIT 1 ;