Panduan Kejuruteraan: Freelance Programmer: Geospatial Engineering with PostGIS, Uber H3 & Mapbox GL. Aldian Fazrihady ialah Programmer Bebas Kanan & Jurutera AI (Python, Django, FastAPI, React, Next.js, TypeScript, Golang).
Build high-speed ride-hailing, delivery dispatch, real estate, and territory intelligence platforms by hiring senior freelance programmer Aldian Fazrihady for PostGIS and Uber H3.
SELECT id, driver_name,
ST_Distance(location_geog, ST_SetSRID(ST_MakePoint($1, $2), 4326)::geography) AS distance_meters
FROM active_drivers
WHERE ST_DWithin(location_geog, ST_SetSRID(ST_MakePoint($1, $2), 4326)::geography, 3000)
ORDER BY location_geog <-> ST_SetSRID(ST_MakePoint($1, $2), 4326)::geography
LIMIT 15;