fix

src/main/resources/mapper/ExamDao.xml

@@ -32,7 +32,7 @@
             pe.id in (
 				SELECT ue.exam_id
 				FROM
-            	pm_exam_user ue
+            	pm_exam_user_relation ue
             	<where>
             	ue.user_id = #{userId}
             	</where>