drop table room_note;
drop table room;

create table room (
  id serial primary key not null,
  name varchar(32) not null,
  section_id "char" not null,
  mode "char" not null,
  episode "char" not null,
  difficulty "char" not null
);

create table room_note (
  room integer references room (id) not null,
  note jsonb not null,
  created_at timestamptz default current_timestamp not null
);