sql 位置乘坐点在线

Posted 2021-05-13

SELECT
  s.id,
  st_linelocatepoint(s.line_geo, s.pickup)   AS pickup_loc,
  st_linelocatepoint(s.line_geo, s.drop_off) AS drop_loc
FROM (
       SELECT
         r.id,
         r.trip_id,
         ST_MakePoint(cast(r.pickup ->> 'lng' AS FLOAT), cast(r.pickup ->> 'lat' AS FLOAT))     AS pickup,
         ST_MakePoint(cast(r.drop_off ->> 'lng' AS FLOAT), cast(r.drop_off ->> 'lat' AS FLOAT)) AS drop_off,
         LineStringFromPoints(t.extra_fields -> 'line' -> 'waypoints')                          AS line_geo
       FROM rides r
         JOIN trips t ON r.trip_id = t.id
       WHERE r.status = 'completed'
             AND r.trip_id = 7192
       ORDER BY r.id DESC
       LIMIT 10
     ) s;