ALTER TABLE `ufutx_s2_shop_sku_extend` ADD `tax_name` VARCHAR(128) NOT NULL DEFAULT '税费' COMMENT '税费名字' AFTER `is_agent`, ADD `tax_num` INT NOT NULL DEFAULT '0' COMMENT '税数量(自动计算, 请勿手动修改)' AFTER `tax_name`, ADD `tax_list` TEXT NULL DEFAULT NULL COMMENT '税配置列表' AFTER `tax_num`;