Merge branch 'dev_v2.2.0' into release_v2.2.0

merge

distributed-print-business/src/main/resources/mapper/TCStatisticsMapper.xml

@@ -52,7 +52,7 @@
         from
             (
             select
-                tcs.id,
+                distinct tcs.id,
                 tcs.college_id as collegeId,
                 tcs.college_name as collegeName,
                 tcs.course_name as courseName,