修改ExamQuestionDao的查询语句错误

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/exam/dao/ExamQuestionDao.java

@@ -17,7 +17,7 @@ public interface ExamQuestionDao extends JpaRepository<ExamQuestion, Integer>, J
             boolean objective);
 
     @Query("select q from ExamQuestion q where q.examId=?1 and q.subjectCode=?2 and q.objective=?3 "
-            + " group by q.main_numnber, q.sub_number order by q.mainNumber, q.subNumber")
+            + " group by q.mainNumber, q.subNumber order by q.mainNumber, q.subNumber")
     public List<ExamQuestion> findByExamIdAndSubjectCodeAndObjectiveGroupByNumber(Integer examId, String subjectCode,
             boolean objective);