update

edu-user/edu-user-biz/src/main/resources/config/mybatis/SubjectMapper.xml

@@ -128,8 +128,8 @@
     </select>
 
     <select id="findExamRegistSubjects" resultMap="Subject">
-        SELECT DISTINCT s.* FROM exam_registration er
-        LEFT JOIN `subject` s ON er.subject_id_=s.id_
-        WHERE er.examination_basic_id_=#{examId}
+        SELECT DISTINCT s.* FROM exam_subject es
+        LEFT JOIN `subject` s ON es.subject_id_=s.id_
+        WHERE es.examination_basic_id_=#{examId}
     </select>
 </mapper>