fix 按最小过期时间倒序

netflix-dao/src/main/resources/mapper/GroupRelationMapper.xml

@@ -49,6 +49,6 @@
               and gr.expiry_time is not null
               group by gr.groups_id) s
         where s.minExpiryTime >= #{minExpiryTime}
-        order by minExpiryTime limit 1
+        order by minExpiryTime desc limit 1
     </select>
 </mapper>