+--SPGiST
+SELECT spgist_stat('spgist_idx');
+NOTICE: Function is not working under PgSQL < 9.2
+ spgist_stat
+-------------
+ ???
+(1 row)
+
+SELECT * FROM spgist_print('kdspgist_idx') as t(tid tid, node_n int, level int, tid_pointer tid, prefix float8, node_label int, leaf_value point);
+NOTICE: Function is not working under PgSQL < 9.2
+ERROR: cache lookup failed for type 2779096485
+SELECT * FROM spgist_print('spgist_idx') as t(tid tid, node_n int, level int, tid_pointer tid, prefix point, node_label int, leaf_value point) WHERE level = 1;
+NOTICE: Function is not working under PgSQL < 9.2
+ERROR: cache lookup failed for type 2779096485
+--GIN