diff --git a/tests/pytest/insert/maxSqlLength.py b/tests/pytest/insert/maxSqlLength.py
deleted file mode 100644
index c114372df232d1cd2c97dd99abced38e799f0688..0000000000000000000000000000000000000000
--- a/tests/pytest/insert/maxSqlLength.py
+++ /dev/null
@@ -1,93 +0,0 @@
-###################################################################
-#           Copyright (c) 2016 by TAOS Technologies, Inc.
-#                     All rights reserved.
-#
-#  This file is proprietary and confidential to TAOS Technologies.
-#  No part of this file may be reproduced, stored, transmitted,
-#  disclosed or used in any form or by any means other than as
-#  expressly provided by the written permission from Jianhui Tao
-#
-###################################################################
-
-# -*- coding: utf-8 -*-
-
-import sys
-import datetime
-from util.log import *
-from util.cases import *
-from util.sql import *
-from util.dnodes import *
-import string
-import random
-
-
-class TDTestCase:
-    def init(self, conn, logSql):
-        tdLog.debug("start to execute %s" % __file__)
-        tdSql.init(conn.cursor(), logSql)
-
-        self.ts = 1537146000000
-
-    def get_random_string(self, length):
-        letters = string.ascii_lowercase
-        result_str = ''.join(random.choice(letters) for i in range(length))
-        return result_str
-
-    def run(self):
-        tdSql.prepare()
-
-        tdSql.execute("create table tb(ts timestamp, name1 binary(1000), name2 binary(1000), name3 binary(1000))")
-        
-        sql = "insert into tb values"
-        for i in range(21):
-            value = self.get_random_string(1000)
-            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
-        tdSql.execute(sql)
-
-        self.ts += 21
-        for i in range(22):
-            value = self.get_random_string(1000)
-            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
-        tdSql.error(sql)
-
-        tdSql.query("select * from tb")
-        tdSql.checkRows(21)
-        
-        tdDnodes.stop(1)             
-        tdDnodes.setTestCluster(False)
-        tdDnodes.setValgrind(False)        
-        tdDnodes.deploy(1)                    
-        tdLog.sleep(20)
-        tdDnodes.start(1)
-        tdDnodes.addSimExtraCfg("maxSQLLength", "1048576")
-        
-        
-        tdSql.close()
-        tdSql.prepare()  
-        tdSql.execute("create table tb(ts timestamp, name1 binary(1000), name2 binary(1000), name3 binary(1000))")
-        
-        sql = "insert into tb values"
-        for i in range(22):
-            value = self.get_random_string(1000)
-            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
-        tdSql.execute(sql)
-        
-        tdSql.query("select * from tb")
-        tdSql.checkRows(43)
-            
-        self.ts += 43
-        for i in range(330):
-            value = self.get_random_string(1000)
-            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
-        tdSql.execute(sql)
-
-        tdSql.query("select * from tb")
-        tdSql.checkRows(379)
-                
-    def stop(self):
-        tdSql.close()
-        tdLog.success("%s successfully executed" % __file__)
-
-
-tdCases.addWindows(__file__, TDTestCase())
-tdCases.addLinux(__file__, TDTestCase())