geo_is_empty geo_typename geog_area geog_centroid geog_length geog_perimeter geom_azimuth geom_length geom_perimeter line_numpoints line_point_n

geog_perimeter() double geog_perimeter ( const GSERIALIZED *  gs, bool  use_spheroid  ) Returns the perimeter of a geography in meters. Parameters [in] gs Geography [in] use_spheroid True when using a spheroid Returns On error return DBL_MAX Note PostGIS function: geography_perimeter(PG_FUNCTION_ARGS)