sqlite - 获取两个以上表的基本 SQL 子查询

Question

嗨，我有三个名为airports, flights,的表checkin。从这个表中，我需要检索一些字段，例如：

flight.code,
flight.start_time,
flight.end_time,
flights.start_id,
flights.endid,
airports.name as sloc,
airports.name as eloc

条件是：

ckeckin.flight_id = flights.id,
airport.id = flights.startid, --for sloc
airports.id = flights.endid --for eloc

Answer 1

像这样的东西？

select flights.code, flights.start_time, flights.end_time, 
flights.start_id, flights.endid, 
a.name as sloc, b.name as eloc
from flights
left join airports a on (flights.start_id = a.id)
left join airports b on (flights.endid = b.id)