-- Game Night Live — marking buzzer answers.
-- The host marks the answering team's buzz correct or wrong. Run after 0003_buzzer.sql.
--
--   result null    : not judged yet. The first such buzz (in buzz order) is the team answering,
--                    as long as nobody has been marked correct.
--   result wrong   : that team is out for this question; the turn passes to the next buzz.
--   result correct : the question is decided; no more buzzes until the host clears.

create type buzz_result as enum ('correct', 'wrong');

alter table buzzes
  add column result buzz_result;