From 6c9b2bf6961bf283772a5c30cd0e2fb3e08ebc58 Mon Sep 17 00:00:00 2001
From: liuyq-617 <yqliu@taosdata.com>
Date: Mon, 4 Jan 2021 19:20:19 +0800
Subject: [PATCH] [TD-2607] add test case

---
 tests/pytest/functions/function_first.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/pytest/functions/function_first.py b/tests/pytest/functions/function_first.py
index 2b78bd33d8..8c08a87ace 100644
--- a/tests/pytest/functions/function_first.py
+++ b/tests/pytest/functions/function_first.py
@@ -110,6 +110,9 @@ 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)
                 
     def stop(self):
         tdSql.close()
-- 
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