进行中课程数量查询

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

@@ -3509,6 +3509,6 @@
         WHERE cs.class_group_id_ = #{classGroupId} AND CONCAT(cs.class_date_,' ',cs.start_class_time_) > NOW()
     </select>
     <select id="getUnderwayCourseNum" resultType="int">
-        SELECT * FROM course_schedule WHERE music_group_id_ = #{musicGroupId} AND group_type_ = #{groupType} AND status_=#{status}
+        SELECT COUNT(*) FROM course_schedule WHERE music_group_id_ = #{musicGroupId} AND group_type_ = #{groupType} AND status_=#{status}
     </select>
 </mapper>