diff --git a/documentation20/en/12.taos-sql/docs.md b/documentation20/en/12.taos-sql/docs.md
index 7aaeb6c32b25cef8f0d1bf2f67ef94c3a2a007ee..704c32850aa8e2284d8ba39951b9996ef2aa3039 100644
--- a/documentation20/en/12.taos-sql/docs.md
+++ b/documentation20/en/12.taos-sql/docs.md
@@ -88,7 +88,7 @@ Note:
     ```mysql
     USE db_name;
     ```
-    Use/switch database
+    Use/switch database (Invalid when accessing through RESTful connection)
 
 - **Drop a database**
     ```mysql