text: CREATE TABLE `spotify_auth` (
    `user_id` varchar(255) COLLATE utf8mb4_bin NOT NULL COMMENT 'ユーザID',
    `access_token` varchar(255) COLLATE utf8mb4_bin NOT NULL COMMENT 'Spotify OAuth2のアクセストークン',
    `refresh_token` varchar(255) COLLATE utf8mb4_bin NOT NULL COMMENT 'Spotify OAuth2のリフレッシュトークン',
    `expiry` datetime NOT NULL COMMENT 'アクセストークンの有効期限',
    PRIMARY KEY (`user_id`),
    CONSTRAINT `spotify_auth_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
  