[postgis-devel] Empty for Discussion

[Paul Ramsey]

select st_astext('GEOMETRYCOLLECTION(POINT EMPTY, POINT EMPTY)'::geometry);
select st_isempty('GEOMETRYCOLLECTION(POINT EMPTY, POINT EMPTY)'::geometry);
select st_numgeometries('GEOMETRYCOLLECTION(POINT EMPTY, POINT EMPTY)'::geometry); st_numgeometries 
select st_astext(st_geometryn('GEOMETRYCOLLECTION(POINT EMPTY, POINT EMPTY)'::geometry, 1));