feat：课程合并

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

@@ -1833,7 +1833,8 @@
                cs.leave_student_num_,
                cs.schoole_id_
         FROM course_schedule cs
-        WHERE cs.class_date_ BETWEEN #{startDate} AND #{endDate}
+        WHERE cs.new_course_id_ IS NULL
+          AND cs.class_date_ BETWEEN #{startDate} AND #{endDate}
           AND cs.group_type_ = 'MUSIC'
           AND (cs.del_flag_ IS NULL OR cs.del_flag_ = 0)
     </select>