geog_distance geom_distance2d geom_distance3d

geog_distance() double geog_distance ( const GSERIALIZED *  gs1, const GSERIALIZED *  gs2  ) Return the distance between two geographies. Parameters [in] gs1,gs2 Geographies Note PostGIS function: geography_distance_uncached(PG_FUNCTION_ARGS). We set by default both tolerance and use_spheroid and initialize the spheroid to WGS84 Returns On error or empty geometries return DBL_MAX