GTFS Query to list all departure and arrival times between two stop names

Question

I\'m working with GTFS structure for the first time and am having trouble with the queries. I\'ve got the transit data into mysql tables, and am free to query them, but I f

Answer 1

simply joining data together, joining to stops twice for start and end stop and joining to stop_times twice for start and end stop_times,
the only thing i am unsure about is where direction_id comes from.
try the below query.
At the very end of the query, you can specify start_s.stop_id and end_s.stop_id which represents the two stops you're querying data about.

SELECT t.trip_id,
       start_s.stop_name as departure_stop,
       start_st.departure_time,
       direction_id as direction,
       end_s.stop_name as arrival_stop,
       end_st.arrival_time
FROM
trips t INNER JOIN calendar c ON t.service_id = c.service_id
        INNER JOIN routes r ON t.route_id = r.route_id
        INNER JOIN stop_times start_st ON t.trip_id = start_st.trip_id
        INNER JOIN stops start_s ON start_st.stop_id = start_s.stop_id
        INNER JOIN stop_times end_st ON t.trip_id = end_st.trip_id
        INNER JOIN stops end_s ON end_st.stop_id = end_s.stop_id
WHERE c.monday = 1 
  AND direction_id = 1
  AND start_st.departure_time > "00:00:00" AND start_st.departure_time < "23:59:59" 
  AND r.route_id = 1
  AND start_s.stop_id = 42
  AND end_s.stop_id = 1

I tried looking up GTFS structure example from this link and i couldn't find anything on direction_id

To specify stop names instead of AND start_s.stop_id = 42 AND end_s.stop_id = 1
just use AND start_s.stop_name = 'Garrison' AND end_s.stop_name = 'Grand Central'