-- ---------------------------- -- 学员与考试题目关系表 -- ---------------------------- drop table if exists `train_exam`.`ex_student_answer`; CREATE TABLE `train_exam`.`ex_student_answer` ( `id` bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '主键' , `paper_id` bigint(20) NOT NULL COMMENT '考卷id', `student_id` bigint(20) NOT NULL COMMENT '学员id', `question_id` bigint(20) NOT NULL COMMENT '题目id', `answer` varchar(20) NOT NULL COMMENT '答案', `passed` tinyint NULL COMMENT '是否正确(0错误,1正确)', `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间', `create_by` varchar(50) NULL DEFAULT NULL COMMENT '创建人', `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间', `update_by` varchar(50) NULL DEFAULT NULL COMMENT '更新人', `remark` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '备注', `version` int NULL DEFAULT 0 COMMENT '乐观锁', PRIMARY KEY (`id`) USING BTREE, UNIQUE KEY `paper_student_id` (`paper_id`,`student_id`,`question_id`) ) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci COMMENT = '学员与考试题目关系表' ROW_FORMAT = DYNAMIC;