CREATE TABLE `sms_check` (
  `u_ip` varchar(30) DEFAULT '',
  `send_dt` datetime DEFAULT current_timestamp(),
  `count` int(11) DEFAULT 0 COMMENT '인증성공 횟수',
  PRIMARY KEY (`u_ip`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci COMMENT 'sms 체크';