4.21bug优化

cloud-exam/src/main/resources/mapper/ExamPaperMapper.xml

@@ -39,7 +39,7 @@
 		SELECT library_id, type, SUM(num) AS number, score
 		FROM tr_exam_system_question
 		WHERE exam_id=#{examId} AND state=1 AND IFNULL(num,0) > 0
-		GROUP BY library_id, type
+		GROUP BY library_id, type,score
 	</select>
 
     <!-- 获取必答考题，按默认排序 -->

cloud-exam/src/main/resources/mapper/TrExamAnswerQuestionMapper.xml

@@ -21,8 +21,6 @@
 	      AND c.answer != ''
         WHERE
 	      a.answer_id = #{answerId}
-        GROUP BY
-	      a.sort
         ORDER BY
 	      a.sort
     </select>