ALTER TABLE `is_training_user_question`
ADD COLUMN `comment`  varchar(512) DEFAULT NULL COMMENT `点评`;

CREATE TABLE `is_training_user_question_atta` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `create_time` datetime DEFAULT NULL,
  `name` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL,
  `url` varchar(1024) COLLATE utf8mb4_bin DEFAULT NULL,
  `user_question_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=COMPACT;