CREATE TABLE `wp_affiliatereferrers` (
  `user_id` bigint(20) default NULL,
				`period` varchar(6) default NULL,
				`url` varchar(190) default NULL,
				`referred` bigint(20) default '0',
				UNIQUE KEY user_period_url (user_id,period,url),
				KEY user_id (user_id),
				KEY period (period)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci