 
 CREATE TABLE gtfs_stops (
   feed_index int NOT NULL,
-  stop_id text,
+  stop_id integer,
   stop_name text NOT NULL,
   stop_desc text,
   stop_lat double precision,

  trip_id text,
  arrival_time text CHECK (arrival_time LIKE '__:__:__'),
  departure_time text CHECK (departure_time LIKE '__:__:__'),
  stop_id text,
  stop_sequence int NOT NULL,
  stop_headsign text,
  pickup_type int REFERENCES gtfs_pickup_dropoff_types(type_id),


CREATE TABLE gtfs_transfers (
  feed_index int NOT NULL,
  from_stop_id integer,
  to_stop_id integer,
  transfer_type int REFERENCES gtfs_transfer_types(transfer_type),
  min_transfer_time int,
  -- Unofficial fields
