ALTER TABLE `app_users` CHANGE `device_token` `device_token` TEXT CHARACTER SET latin1 COLLATE latin1_swedish_ci NULL DEFAULT NULL;
ALTER TABLE `shop_owner` CHANGE `device_token` `device_token` TEXT CHARACTER SET latin1 COLLATE latin1_swedish_ci NULL DEFAULT NULL;
ALTER TABLE `shop_employee` CHANGE `device_token` `device_token` TEXT CHARACTER SET latin1 COLLATE latin1_swedish_ci NULL DEFAULT NULL;