乐团学员列表增加导出功能

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

@@ -287,7 +287,7 @@
     </select>
 
     <select id="countPayNum" resultType="map">
-        SELECT COUNT(DISTINCT user_id_) `value`,subject_id_ `key` FROM student_registration
+        SELECT COUNT(DISTINCT user_id_) `value`,actual_subject_id_ `key` FROM student_registration
         WHERE music_group_id_ = #{musicGroupId} AND payment_status_ = 2 AND music_group_status_ != 'QUIT' GROUP BY subject_id_
     </select>