ALTER TABLE `person` ADD `wifi_id` INT(11) NOT NULL AFTER `block_id`, ADD `wifi_name` VARCHAR(250) NOT NULL AFTER `wifi_id`, ADD `num_mail` INT(11) NOT NULL AFTER `wifi_name`, ADD `num_femail` INT(11) NOT NULL AFTER `num_mail`, ADD `f_num_liss_3` INT(11) NOT NULL AFTER `num_femail`, ADD `f_num_ill` INT(11) NOT NULL AFTER `f_num_liss_3`, ADD `f_num_sn` INT(11) NOT NULL AFTER `f_num_ill`, ADD `income` INT(11) NOT NULL AFTER `f_num_sn`, ADD `home_status` INT(11) NOT NULL AFTER `income`;