text: CREATE TYPE ip_protocol AS enum('tcp', 'ip', 'icmp');
  
  CREATE TABLE bar_old (id_old serial not null, ip_old ip_protocol NOT NULL);
  
  -- name: ListFoo :many
  SELECT id_old as foo_old, id_old as baz_old
  FROM bar_old
  WHERE ip_old = $1 AND id_old = $2;
  
  -- name: ListBar :many
  SELECT * FROM bar_old;
  
  