diff --git a/tests/system-test/2-query/TD-12344.py b/tests/system-test/2-query/TD-12344.py
deleted file mode 100644
index 7685444b24ed00df531ca68328895808f5258cff..0000000000000000000000000000000000000000
--- a/tests/system-test/2-query/TD-12344.py
+++ /dev/null
@@ -1,124 +0,0 @@
-###################################################################
-#           Copyright (c) 2020 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 -*-
-
-from posixpath import split
-import sys
-import os 
-
-from util.log import *
-from util.cases import *
-from util.sql import *
-from util.dnodes import *
-import subprocess
-
-class TDTestCase:
-    def init(self, conn, logSql):
-        tdLog.debug("start to execute %s" % __file__)
-        tdSql.init(conn.cursor(), logSql)
-        
-        self.ts = 1420041600000 # 2015-01-01 00:00:00  this is begin time for first record
-        self.num = 10
-
-    def getBuildPath(self):
-        selfPath = os.path.dirname(os.path.realpath(__file__))
-
-        if ("community" in selfPath):
-            projPath = selfPath[:selfPath.find("community")]
-        else:
-            projPath = selfPath[:selfPath.find("tests")]
-
-        for root, dirs, files in os.walk(projPath):
-            if ("taosd" in files):
-                rootRealPath = os.path.dirname(os.path.realpath(root))
-                if ("packaging" not in rootRealPath):
-                    buildPath = root[:len(root) - len("/build/bin")]
-                    break
-        return buildPath
-
-
-    def caseDescription(self):
-
-        '''
-        case1 <wenzhouwww>: [TD-12344] : 
-            this test case is an test case for unexpectd crash for session function , it will coredump taoshell ;
-            
-        ''' 
-        return 
-
-    def getBuildPath(self):
-        selfPath = os.path.dirname(os.path.realpath(__file__))
-
-        if ("community" in selfPath):
-            projPath = selfPath[:selfPath.find("community")]
-        else:
-            projPath = selfPath[:selfPath.find("tests")]
-
-        for root, dirs, files in os.walk(projPath):
-            if ("taosd" in files):
-                rootRealPath = os.path.dirname(os.path.realpath(root))
-                if ("packaging" not in rootRealPath):
-                    buildPath = root[:len(root)-len("/build/bin")]
-                    break
-        return buildPath
-
-    def getcfgPath(self):
-        selfPath = os.path.dirname(os.path.realpath(__file__))
-        print(selfPath)
-        if ("community" in selfPath):
-            projPath = selfPath[:selfPath.find("community")]
-        else:
-            projPath = selfPath[:selfPath.find("tests")]
-        
-        cfgPath = projPath + "/sim/dnode1/cfg  "
-        return cfgPath
-   
-    def run(self):
-        tdSql.prepare()
-        tdSql.execute("create database if not exists testdb keep 36500;")
-        tdSql.execute("use testdb;")
-        tdSql.execute("create stable st (ts timestamp , id int , value double) tags(hostname binary(10) ,ind int);")
-        for i in range(self.num):
-            tdSql.execute("insert into sub_%s using st tags('host_%s' , %d) values (%d , %d , %f );"%(str(i),str(i),i*10,self.ts+100*i,i*2,i+10.00))
-            tdSql.execute("insert into sub_%s using st tags('host_%s' , %d) values (%d , %d , %f );"%(str(i),str(i),i*10,self.ts+200*i,i*2,i+10.00))
-            tdSql.execute("insert into sub_%s using st tags('host_%s' , %d) values (%d , %d , %f );"%(str(i),str(i),i*10,self.ts+300*i,i*2,i+10.00))
-            tdSql.execute("insert into sub_%s using st tags('host_%s' , %d) values (%d , %d , %f );"%(str(i),str(i),i*10,self.ts+10000*i,i*2,i+10.00))
-
-        cfg_path = self.getcfgPath()
-        print(cfg_path)
-        tdSql.execute('select elapsed(ts,10s) from testdb.st   where ts>=\"2015-01-01 00:00:00.000\"  and ts < \"2015-01-01 00:10:00.000\" session(ts,1d) group by tbname;')  
-        
-        datas = tdSql.getResult('select elapsed(ts,10s) from testdb.st   where ts>=\"2015-01-01 00:00:00.000\"  and ts < \"2015-01-01 00:10:00.000\" session(ts,1d) group by tbname;') 
-        table_names = ["sub_%s"%str(i) for i in  range(10)]
-        # print(table_names)
-
-        for index , table_name in enumerate(table_names):
-            tdSql.query("select elapsed(ts,10s) from testdb.%s   where ts>=\"2015-01-01 00:00:00.000\"  and ts < \"2015-01-01 00:10:00.000\" session(ts,1d) ;"%table_name)
-            # print(datas)
-            tdSql.checkData(0,1,datas[index][1])
-
-
-        for i in range(10):
-            taos_cmd1= "taos  -c %s -s 'select elapsed(ts,10s) from testdb.st   where ts>=\"2015-01-01 00:00:00.000\"  and ts < \"2015-01-01 00:10:00.000\" session(ts,1d) group by tbname;' " % (cfg_path)
-            # print(taos_cmd1)
-            _ = subprocess.check_output(taos_cmd1, shell=True).decode("utf-8") 
-        
-
-
-    def stop(self):
-        tdSql.close()
-        tdLog.success("%s successfully executed" % __file__)
-
-tdCases.addWindows(__file__, TDTestCase())
-tdCases.addLinux(__file__, TDTestCase())
-
-