CREATE TABLE IF NOT EXISTS blackouts (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  guild_id INTEGER NOT NULL,
  user_id INTEGER NOT NULL,
  date TEXT NOT NULL,
  reason TEXT,
  created_at TEXT NOT NULL DEFAULT (datetime('now')),
  UNIQUE(guild_id, user_id, date),
  FOREIGN KEY (guild_id) REFERENCES guilds(id),
  FOREIGN KEY (user_id) REFERENCES users(id)
);