PostgreSQLが値を誤って挿入する

gtfsフィードの一部のデータに対して非正規化テーブルを追加したいとします。そのために私は新しいテーブルを作成：PostgreSQLが値を誤って挿入する

CREATE TABLE denormalized_trips (
    stops_coords json NOT NULL, 
    stops_object json NOT NULL, 
    agency_key text NOT NULL, 
    trip_id text NOT NULL, 
    route_id text NOT NULL, 
    service_id text NOT NULL, 
    shape_id text, 
    route_color text, 
    route_long_name text, 
    route_desc text, 
    direction_id text 
); 

CREATE INDEX denormalized_trips_index ON denormalized_trips (agency_key, trip_id); 
CREATE UNIQUE INDEX denormalized_trips_index ON denormalized_trips (agency_key, route_id);

は、今私は、INSERT文を介して他の1つのテーブルからデータを転送します。ステートメントはかなり複雑です。

INSERT INTO denormalized_trips 
SELECT 
    trps.stops_coords, 
    trps.stops_object, 
    trps.trip_id, 
    trps.service_id, 
    trps.route_id, 
    trps.direction_id, 
    trps.agency_key, 
    trps.shape_id, 
    trps.route_color, 
    trps.route_long_name, 
    trps.route_desc 
FROM (
SELECT 
    array_to_json(ARRAY_AGG(array[stop_lat, stop_lon])) AS stops_coords, 
    array_to_json(ARRAY_AGG(array[ 
      stops.stop_id, 
      CAST (stop_times.stop_sequence AS TEXT), 
      stops.stop_name, 
      stop_times.departure_time, 
      CAST (stop_times.departure_time_seconds AS TEXT), 
      stop_times.arrival_time, 
      CAST (stop_times.arrival_time_seconds AS TEXT) 
     ])) AS stops_object, 
    trips.trip_id, 
    trips.service_id, 
    trips.direction_id, 
    trips.agency_key, 
    trips.shape_id, 
    routes.route_id, 
    routes.route_color, 
    routes.route_long_name, 
    routes.route_desc 
FROM gtfs_stop_times AS stop_times 

INNER JOIN gtfs_trips AS trips 
    ON trips.trip_id = stop_times.trip_id AND trips.agency_key = stop_times.agency_key 

INNER JOIN gtfs_routes AS routes ON trips.agency_key = routes.agency_key AND routes.route_id = trips.route_id 

INNER JOIN gtfs_stops AS stops 
    ON stops.stop_id = stop_times.stop_id 
    AND stops.agency_key = stop_times.agency_key 
    AND NOT EXISTS (
     SELECT 0 
     FROM denormalized_max_stop_sequence AS max 
     WHERE max.agency_key = stop_times.agency_key 
     AND max.trip_id = stop_times.trip_id 
     AND max.trip_max = stop_times.stop_sequence 
    ) 
GROUP BY 
    trips.trip_id, 
    trips.service_id, 
    trips.direction_id, 
    trips.agency_key, 
    trips.shape_id, 
    routes.route_id, 
    routes.route_color, 
    routes.route_long_name, 
    routes.route_desc 
) as trps

私はちょうど正しい結果を得るために内部選択ステートメントを実行するとします。