diff --git a/tests/pytest/functions/function_first.py b/tests/pytest/functions/function_first.py
index 8c08a87ace72e0d6c357298d76062a41a23e12a9..5b2aacb779a64377baa0417d5ba0ba5ef0a27290 100644
--- a/tests/pytest/functions/function_first.py
+++ b/tests/pytest/functions/function_first.py
@@ -110,6 +110,7 @@ class TDTestCase:
         tdSql.query("select first(col9) from test1")
         tdSql.checkRows(1)
         tdSql.checkData(0, 0, '涛思数据1')
+        
         # TD-2607 first,last + where none exist condition + interval
         tdSql.query("select first(*),last(*) from test1 where ts < 23 interval(1s)")
         tdSql.checkRows(0)