text: CREATE TABLE `comment` (
      `id` INT NOT NULL AUTO_INCREMENT,
      `user_id` INT NOT NULL,
      `post_id` INT NOT NULL,
      `uuid` VARCHAR(36) NOT NULL,
      `create_date` TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
      `modify_date` TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
      `version` INT DEFAULT 0 NOT NULL,
      `content` VARCHAR(200) DEFAULT '',
      
      PRIMARY KEY (`id`),
      CONSTRAINT `FK_USER_COMMENT` FOREIGN KEY (`user_id`)
          REFERENCES `user` (`id`)
          ON DELETE CASCADE ON UPDATE CASCADE,
      CONSTRAINT `FK_POST_COMMENT` FOREIGN KEY (`post_id`)
          REFERENCES `post` (`id`)
          ON DELETE CASCADE ON UPDATE CASCADE
  )  ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=UTF8MB4;