修改没有签到记录看不到课表的情况

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

@@ -534,7 +534,7 @@
 
     <sql id="queryMusicGroupCourseScheduleSql">
         <where>
-            cg.del_flag_ = 0  AND ta.teacher_id_ = cs.actual_teacher_id_ AND cg.group_type_ = 'MUSIC'
+            cg.del_flag_ = 0 AND (ta.teacher_id_ = cs.actual_teacher_id_ OR ta.id_ IS NULL) AND cg.group_type_ = 'MUSIC'
             <if test="classScheduleType != null">
                 AND cs.type_ = #{classScheduleType}
             </if>