1、试听课

2、收费网管课活动

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

@@ -668,7 +668,7 @@
     </select>
 
     <select id="countStudentAndTeacherTrialPractices" resultType="int">
-        SELECT COUNT(id_)
+        SELECT COUNT(pg.id_)
         FROM course_schedule cs
             LEFT JOIN practice_group pg ON cs.music_group_id_=pg.id_
         WHERE