diff --git a/fe/fe-core/src/main/cup/sql_parser.cup b/fe/fe-core/src/main/cup/sql_parser.cup
index 08d41b378c..a1f45db907 100644
--- a/fe/fe-core/src/main/cup/sql_parser.cup
+++ b/fe/fe-core/src/main/cup/sql_parser.cup
@@ -7658,6 +7658,8 @@ keyword ::=
     {: RESULT = id; :}
     | KW_PERIOD:id
     {: RESULT = id; :}
+    | KW_PERCENT:id
+    {: RESULT = id; :}
     ;
 
 // Identifier that contain keyword