--
--================================
--
-SELECT Difference(named_places.boundary, forests.boundary)
+SELECT AsText(Difference(named_places.boundary, forests.boundary))
FROM named_places, forests
WHERE named_places.name = 'Ashton' AND forests.name = 'Green Forest';
--
--
--================================
--
-SELECT GeomUnion(shore, boundary)
+SELECT AsText(GeomUnion(shore, boundary))
FROM lakes, named_places
WHERE lakes.name = 'Blue Lake' AND named_places.name = 'Goose Island';
--
--
--================================
--
-SELECT SymmetricDifference(shore, boundary)
+SELECT AsText(SymmetricDifference(shore, boundary))
FROM lakes, named_places
WHERE lakes.name = 'Blue Lake' AND named_places.name = 'Goose Island';
--
--
--================================
--
-SELECT ConvexHull(shore)
+SELECT AsText(ConvexHull(shore))
FROM lakes
WHERE lakes.name = 'Blue Lake';
--