journeys_str: timestamps and time ranges are integers

		);

		print $v72_migration_fyi;

	},

	# v72 -> v73

	# export timestamps as integers, not strings

	sub {

		my ($db) = @_;

		$db->query(

			qq{

				drop view journeys_str;

				create view journeys_str as select

					journeys.id as journey_id, user_id,

					backend.iris as is_iris, backend.hafas as is_hafas,

					backend.efa as is_efa, backend.dbris as is_dbris,

					backend.motis as is_motis,

					backend.name as backend_name, journeys.backend_id as backend_id,

					train_type, train_line, train_no, train_id,

					distance_beeline, distance_route, distance_polyline,

					extract(epoch from checkin_time) :: int8 as checkin_ts,

					extract(epoch from sched_departure) :: int8 as sched_dep_ts,

					extract(epoch from real_departure) :: int8 as real_dep_ts,

					extract(epoch from real_departure - sched_departure) :: int8 as delay_dep,

					checkin_station_id as dep_eva,

					dep_station.ds100 as dep_ds100,

					dep_station.name as dep_name,

					dep_station.lat as dep_lat,

					dep_station.lon as dep_lon,

					dep_station_external_id.external_id as dep_external_id,

					extract(epoch from checkout_time) :: int8 as checkout_ts,

					extract(epoch from sched_arrival) :: int8 as sched_arr_ts,

					extract(epoch from real_arrival) :: int8 as real_arr_ts,

					extract(epoch from real_arrival - sched_arrival) :: int8 as delay_arr,

					checkout_station_id as arr_eva,

					arr_station.ds100 as arr_ds100,

					arr_station.name as arr_name,

					arr_station.lat as arr_lat,

					arr_station.lon as arr_lon,

					arr_station_external_id.external_id as arr_external_id,

					extract(epoch from sched_arrival - sched_departure) :: int8 as sched_duration,

					extract(epoch from real_arrival - real_departure) :: int8 as rt_duration,

					polylines.polyline as polyline,

					visibility,

					coalesce(visibility, users.public_level & 127) as effective_visibility,

					cancelled, edited, route, messages, user_data,

					dep_platform, arr_platform

					from journeys

					left join polylines on polylines.id = polyline_id

					left join users on users.id = user_id

					left join stations as dep_station on checkin_station_id = dep_station.eva and journeys.backend_id = dep_station.source

					left join stations as arr_station on checkout_station_id = arr_station.eva and journeys.backend_id = arr_station.source

					left join stations_external_ids as dep_station_external_id on checkin_station_id = dep_station_external_id.eva and journeys.backend_id = dep_station_external_id.backend_id

					left join stations_external_ids as arr_station_external_id on checkout_station_id = arr_station_external_id.eva and journeys.backend_id = arr_station_external_id.backend_id

					left join backends as backend on journeys.backend_id = backend.id

					;

				update schema_version set version = 73;

			}

		);

	},

);

sub sync_dbdb {