fix 错题库排序

zhongzheng-system/src/main/resources/mapper/modules/user/UserExamWrongRecordMapper.xml

@@ -69,6 +69,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </if>
         GROUP BY
         e.exam_id
+        ORDER BY
+        e.create_time desc
     </select>
 
     <select id="selectQuestionList" parameterType="com.zhongzheng.modules.user.bo.UserExamWrongRecordQueryBo" resultMap="UserExamWrongRecordVoResult">