ALTER TABLE `ufutx_exam_paper` 
ADD COLUMN `resit_end_time` timestamp null DEFAULT null  COMMENT "补考结束时间" after `end_time`,
ADD COLUMN `resit_start_time` timestamp null DEFAULT null  COMMENT "补考开始时间" after `end_time`,
ADD COLUMN `qrcode` varchar(255) DEFAULT null  COMMENT "二维码" after `score_time`,
ADD COLUMN `details` text DEFAULT null  COMMENT "详情" after `title`,
ADD COLUMN `intro` varchar(255) DEFAULT null  COMMENT "简介" after `title`,
ADD COLUMN `pic` varchar(255) NOT NULL COMMENT "图片" after `title`,
ADD COLUMN `category_id` int DEFAULT 0 COMMENT "分类id" after `id`

