fix 在读人数

mec-biz/src/main/resources/config/mybatis/StudentManageDao.xml

@@ -450,6 +450,7 @@
     <select id="countStudyNum" resultType="java.lang.Integer">
         SELECT COUNT(sr.user_id_) FROM student_registration sr
         WHERE sr.music_group_id_ = #{musicGroupId}
+        AND sr.payment_status_ = 2
         AND sr.music_group_status_ != 'QUIT'
     </select>