diff --git a/PostgreSQL/common.sql b/PostgreSQL/common.sql
index 0c0f99a..84da54f 100644
--- a/PostgreSQL/common.sql
+++ b/PostgreSQL/common.sql
@@ -2,3 +2,22 @@
 alter user postgres with password 'PostgreSQL20868354';
 -- 查询所有用户
 select * from pg_catalog.pg_user;
+
+-- 查询表的 COLLATION VERSION
+SELECT
+    datname,
+    datcollversion,
+    pg_collation_actual_version((SELECT oid FROM pg_collation WHERE collname = 'default')) as system_version
+FROM pg_database
+WHERE datname IN ('fortern', 'postgres', 'kt_shop')
+ORDER BY datname;
+
+-- 重建索引
+REINDEX DATABASE postgres;
+ALTER DATABASE postgres REFRESH COLLATION VERSION;
+
+REINDEX DATABASE fortern;
+ALTER DATABASE fortern REFRESH COLLATION VERSION;
+
+REINDEX DATABASE kt_shop;
+ALTER DATABASE kt_shop REFRESH COLLATION VERSION;