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