50 lines
2.3 KiB
PL/PgSQL
50 lines
2.3 KiB
PL/PgSQL
DROP FUNCTION IF EXISTS layer_obs_roads(geometry, int);
|
|
DROP FUNCTION IF EXISTS layer_obs_roads(geometry, int, integer, timestamp, timestamp);
|
|
|
|
CREATE OR REPLACE FUNCTION layer_obs_roads(bbox geometry, zoom_level int, user_id integer, min_time timestamp, max_time timestamp)
|
|
RETURNS TABLE(
|
|
way_id bigint,
|
|
geometry geometry,
|
|
distance_overtaker_mean float,
|
|
distance_overtaker_min float,
|
|
distance_overtaker_max float,
|
|
distance_overtaker_median float,
|
|
distance_overtaker_array float[],
|
|
overtaking_event_count int,
|
|
usage_count bigint,
|
|
direction int,
|
|
zone zone_type,
|
|
offset_direction int
|
|
) AS $$
|
|
|
|
SELECT
|
|
road.way_id::bigint as way_id,
|
|
road.geometry as geometry,
|
|
avg(distance_overtaker) as distance_overtaker_mean,
|
|
min(distance_overtaker) as distance_overtaker_min,
|
|
max(distance_overtaker) as distance_overtaker_max,
|
|
PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY distance_overtaker) as distance_overtaker_median,
|
|
array_agg(distance_overtaker) as distance_overtaker_array,
|
|
count(overtaking_event.id)::int as distance_overtaker_count,
|
|
(
|
|
SELECT count(road_usage.id) from road_usage
|
|
JOIN track ON track.id = road_usage.track_id
|
|
WHERE road_usage.way_id = road.way_id
|
|
AND (road.directionality != 0 or road_usage.direction_reversed = r.rev)
|
|
AND (user_id is NULL or user_id = track.author_id)
|
|
AND road_usage.time BETWEEN COALESCE(min_time, '1900-01-01'::timestamp) AND COALESCE(max_time, '2100-01-01'::timestamp)
|
|
) as usage_count,
|
|
r.dir as direction,
|
|
road.zone::zone_type as zone,
|
|
case when road.directionality = 0 then r.dir else 0 end as offset_direction
|
|
FROM road
|
|
LEFT JOIN (VALUES (-1, TRUE), (1, FALSE), (0, FALSE)) AS r(dir, rev) ON (abs(r.dir) != road.directionality)
|
|
FULL OUTER JOIN overtaking_event ON (road.way_id = overtaking_event.way_id and (road.directionality != 0 or overtaking_event.direction_reversed = r.rev))
|
|
JOIN track ON overtaking_event.track_id = track.id
|
|
WHERE road.geometry && bbox
|
|
AND (user_id is NULL or user_id = track.author_id)
|
|
AND overtaking_event.time BETWEEN COALESCE(min_time, '1900-01-01'::timestamp) AND COALESCE(max_time, '2100-01-01'::timestamp)
|
|
GROUP BY road.name, road.way_id, road.geometry, road.directionality, road.zone, r.dir, r.rev;
|
|
|
|
$$ LANGUAGE SQL IMMUTABLE;
|