diff --git a/tests/system-test/0-others/udfTest.py b/tests/system-test/0-others/udfTest.py
index 3850e1eb0f..0a998aee2b 100644
--- a/tests/system-test/0-others/udfTest.py
+++ b/tests/system-test/0-others/udfTest.py
@@ -363,6 +363,7 @@ class TDTestCase:
         # order by udf function result 
         for _ in range(50):
             tdSql.query("select udf2(c1) from stb1 group by 1-udf1(c1)")
+            print(tdSql.queryResult)
 
         # udf functions with filter