romanshuvalov

-- thank to http://gis.stackexchange.com/questions/209825/converting-tin-to-multipolygon-in-postgis
CREATE OR REPLACE FUNCTION tesselate_to_multipolygon(
    geometry)
  RETURNS geometry AS
$BODY$
	SELECT ST_Collect(geom) AS geom 
	FROM (
	  SELECT ST_MakePolygon(ST_ExteriorRing((ST_Dump(ST_Tesselate($1))).geom)) AS geom) as geom_item;
$BODY$
  LANGUAGE sql