diff --git a/tests/system-test/2-query/TD-12164.py b/tests/system-test/2-query/TD-12164.py
new file mode 100644
index 0000000000000000000000000000000000000000..217147868d95f593725d77a078078cb719e326a8
--- /dev/null
+++ b/tests/system-test/2-query/TD-12164.py
@@ -0,0 +1,116 @@
+###################################################################
+#           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-12164] 
+            this test case is an test case for key timestamp colum , such as elapsed function ,it will occur unexpected results ;
+            Root Cause: elapse parameter column is checked that both the index and id is 0 
+            
+        ''' 
+        return 
+   
+    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 tb%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 tb%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 tb%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 tb%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))
+
+        # basic query
+        tdSql.query("select elapsed(ts) from st group by tbname ;  ")
+        tdSql.query("select elapsed(ts) from tb1 ;  ")
+        tdSql.error("select elapsed(ts) from tb1 group by tbname ;  ")
+        tdSql.query("select elapsed(ts) from st group by tbname  order by ts;  ")
+        tdSql.checkRows(10)
+        tdSql.checkData(0,0,0)
+        tdSql.checkData(1,0,9900)
+        tdSql.checkData(9,0,89100)
+        
+        # nest query  
+        tdSql.error('select elapsed(ts00 ,1s) from (select elapsed(ts,1s) ts00 from tb1) ;')
+        tdSql.error('select elapsed(ts00 ,1s) from (select elapsed(ts,1s) ts00 from st group by tbname ) ;')
+        tdSql.error('select elapsed(ts00 ,1s) from (select elapsed(ts,1s) ts00 from tb1 group by tbname ) ;')
+
+        tdSql.query('select max(ts00) from (select elapsed(ts,1s) ts00 from st group by tbname ) ;')
+        tdSql.checkRows(1)
+        tdSql.checkData(0,0,89.1)
+
+        tdSql.error('select elapsed(data) from (select elapsed(ts,1s) data from st group by tbname ) ;')
+        tdSql.error('select elapsed(data) from (select elapsed(ts,1s) data from tb2 ) ;')
+
+        tdSql.error('select elapsed(data) from (select ts data from st group by tbname ) ;')
+        tdSql.error('select elapsed(data) from (select ts data from tb2 ) ;')
+
+        tdSql.error('select elapsed(data) from (select value data from st group by tbname ) ;')
+        tdSql.error('select elapsed(data) from (select value data from tb2 ) ;')
+
+        tdSql.query('select elapsed(ts) from (select csum(value) data from tb2 ) ;')
+        tdSql.checkRows(1)
+        tdSql.checkData(0,0,19800)
+
+        tdSql.query('select elapsed(ts) from (select diff(value) data from tb2 ) ;')
+        tdSql.checkRows(1)
+        tdSql.checkData(0,0,19600.0)
+
+        # another bug : it will be forbidden in the feature .
+        # tdSql.error('select elapsed(ts) from (select csum(value) data from st group by tbname ) ;')
+     
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
+
+