推送消息只去对应声部的学生

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

@@ -972,6 +972,7 @@
         <result column="total_class_times_" property="totalClassTimes"/>
         <result column="img_" property="img"/>
         <result column="current_class_times_" property="currentClassTimes"/>
+        <result column="memo_" property="memo"/>
     </resultMap>
     <select id="findClassGroupByMusicGroupIdAndSubjectId" resultMap="HighClassGroup">
         SELECT * FROM class_group WHERE music_group_id_=#{musicGroupId}