CREATE TABLE `ufutx_exam_option` (
    `id` BIGINT NOT NULL AUTO_INCREMENT , 
    `library_id` int NOT NULL COMMENT "题库id",
    `question_id` int NOT NULL COMMENT "问题id",
    `title` varchar(255) NOT NULL COMMENT "选项标题",
    `number` varchar(10) NOT NULL COMMENT "编号 A,B,C,D",
    `created_at` TIMESTAMP NULL DEFAULT NULL ,   
    `updated_at` TIMESTAMP NULL DEFAULT NULL , 
    PRIMARY KEY (`id`)
) ENGINE = InnoDB COMMENT = '测试选项';