update

edu-user/edu-user-server/src/main/resources/config/mybatis/ExamRegistrationMapper.xml

@@ -351,10 +351,10 @@
 
     <select id="countWithoutExamRoomStudentNum" resultType="int">
 		SELECT
-			COUNT(ersr.id_)
+			COUNT(er.id_)
 		FROM
 			exam_registration er
-		LEFT JOIN exam_room_student_relation ersr ON ersr.student_id_ = er.student_id_
+		LEFT JOIN exam_room_student_relation ersr ON ersr.exam_registration_id_ = er.id_
 		WHERE 1=1
 		<if test="organIds!=null">
 			AND er.organ_id_ IN