Delivery Consultant
summary
Overview of PostGIS for PostgreSQL, claiming storage of geometry as true spatial types (points, polygons), spatial indexes to speed queries, and a live example using ST_DWithin distance query to pull locations within 100 m and 1,000 m. Describes built-in geometry functions for filtering and reverse geocoding, lists integrations with Tableau and QGIS, and concrete use cases—location services, urban planning, environmental monitoring, asset tracking, logistics, geostatistics and disaster response—with queries shown to return nearby features.
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