diff --git a/tests/system-test/2-query/primary_ts_base_4.py b/tests/system-test/2-query/primary_ts_base_4.py
new file mode 100644
index 0000000000..85e825df96
--- /dev/null
+++ b/tests/system-test/2-query/primary_ts_base_4.py
@@ -0,0 +1,52 @@
+###################################################################
+#           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 -*-
+from util.cases import tdCases
+from .primary_ts_base import *
+from faker import Faker
+import random
+
+class TDTestCase(TDTestCase):
+                            
+    def run(self):
+        startTime = time.time() 
+        self.dropandcreateDB_primary_key(self.database, 1 , 1 ,'yes','yes','no')
+
+        # self.fun_pk_interp(self.database,'interp','') 
+        # self.multiple_agg_groupby(self.database,1) 
+        # self.fun_pk_diff(self.database,'diff','') 
+        # self.fun_pk_twa(self.database,'derivative',',1s,0') 
+        # self.fun_pk_twa(self.database,'derivative',',1s,1') 
+        # self.fun_pk_unique(self.database,'unique','')  
+        # self.fun_pk_last_init(self.database,'last','')  
+        # self.fun_pk_last(self.database,'last','')  
+        # self.fun_pk_last(self.database,'last_row','') 
+        # self.fun_pk_first(self.database,'first','') 
+        
+        # self.query_pk_fun(self.database,'') 
+        
+        # self.touying_pk_1(self.database,1) 
+        # self.touying_pk_where(self.database,'') 
+        self.touying_pk_where(self.database,'tags') 
+        self.touying_pk_where(self.database,'distinct') 
+        self.count_pk(self.database,1) 
+        
+        endTime = time.time()
+        print("total time %ds" % (endTime - startTime))
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())