update

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

@@ -111,7 +111,10 @@
 	</select>
     <select id="queryByScoreIdAndCourseId"
             resultMap="CourseScheduleStudentMusicScore">
-        SELECT cssm.*,smsa.mp3_url_,sms.url_,sms.name_ music_score_name_  FROM course_schedule_student_music_score cssm
+        SELECT cssm.*,
+        CASE WHEN smsa.metronome_mp3_url_ IS NULL OR smsa.metronome_mp3_url_ = '' THEN smsa.mp3_url_ ELSE smsa.metronome_mp3_url_ END url_,
+        sms.url_ mp3_url_,sms.name_ music_score_name_
+        FROM course_schedule_student_music_score cssm
         LEFT JOIN sys_music_score_accompaniment smsa ON cssm.music_score_accompaniment_id_ = smsa.id_
         LEFT JOIN sys_music_score sms ON sms.id_ = smsa.exam_song_id_
         <where>