PostGIS  3.4.0dev-r@@SVN_REVISION@@
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◆ PG_FUNCTION_INFO_V1() [54/97]

PG_FUNCTION_INFO_V1 ( LWGEOM_perimeter2d_poly  )

find the "perimeter of a geometry" perimeter(point) = 0 perimeter(line) = 0 perimeter(polygon) = sum of ring perimeters uses euclidian 2d computation even if input is 3d