foo=# select * from foo;
 id 
----
  1
  2
(2 rows)

foo=# select * from bar;
 id |  title   
----+----------
  1 | my title
(1 row)

foo=# select * from dog;
 id |  title   |  name   
----+----------+---------
  1 | my title | my name
(1 row)

foo=# select * from cat;
 id | position 
----+----------
  2 | position
(1 row)