Merge branch 'fixbug/fixschool' into 'master'

bug: [none] 修复学社群异常

See merge request rays/pcloud-book!879

pcloud-service-book/src/main/resources/mapper/skill/PcloudGroupActivityDao.xml

@@ -103,7 +103,7 @@
         a.`name`,
         a.description as `desc`,
         a.join_type AS joinType,
-        a.book_group_classify_id AS bookGroupClassifyId,
+        b.id AS bookGroupClassifyId,
         a.pro_label_id AS proLabelId,
         a.dep_label_id AS depLabelId,
         a.pur_label_id AS purLabelId,