konrads=> insert into foo values(1,'1,2'::point);
INSERT 0 1
konrads=> select * from foo;
 id |   p
----+-------
  1 | (1,2)
(1 row)

konrads=> select id,p[1] from foo
konrads-> ;
 id | p
----+---
  1 | 2
(1 row)