text: CREATE TABLE request (
  	id serial,
  	trip_id text,
  	stop_id text,
  	user_id text,
  	device_id text,
  	req_time timestamp with time zone,
  	canceled boolean,
  	cancel_time timestamp with time zone,
  	pushed boolean
  );
  
  CREATE TABLE report (
    id serial,
    trip_id text,
    stop_id text,
    user_id text,
    report_time timestamp with time zone
  );
  
  CREATE TABLE vehicle (
    id serial,
    vehicle_id text,
    trip_id text
  );