fix短信

zhongzheng-system/src/main/resources/mapper/modules/grade/ClassGradeUserMapper.xml

@@ -1421,7 +1421,7 @@
         SELECT
         ups.record_start_time
         FROM
-             user_period_status ups ON rp.period_id = ups.id
+             user_period_status ups 
         LEFT JOIN user_period up ON up.id = ups.period_id
         WHERE
         1=1