SET NAMES utf8; SET FOREIGN_KEY_CHECKS = 0; ALTER TABLE `t_product` ADD COLUMN IF NOT EXISTS `product_public_notes` longtext CHARACTER SET utf8 COLLATE utf8_bin NULL AFTER `recv_result`; ALTER TABLE `t_file_list` ADD COLUMN IF NOT EXISTS `template_number` int(1) NULL AFTER `user_id`; SET FOREIGN_KEY_CHECKS = 1;