diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index bcfb392bb43c634fca62aa9d9786f8265327dcd4..f0543f245665e87a157c7b734319655ede8e3ecc 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -294,6 +294,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/sample.py -R
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/sin.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/sin.py -R
+,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/smaBasic.py -N 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/smaTest.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/smaTest.py -R
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/sml.py
diff --git a/tests/system-test/2-query/smaBasic.py b/tests/system-test/2-query/smaBasic.py
new file mode 100644
index 0000000000000000000000000000000000000000..43c379ee53889aa0af5410332bf9d02cfb1ca291
--- /dev/null
+++ b/tests/system-test/2-query/smaBasic.py
@@ -0,0 +1,296 @@
+###################################################################
+#           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 random
+import time
+
+import taos
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+class TDTestCase:
+
+    # get col value and total max min ...
+    def getColsValue(self, i, j):
+        # c1 value
+        if random.randint(1, 10) == 5:
+            c1 = None
+        else:
+            c1 = 1
+
+        # c2 value
+        if j % 3200 == 0:
+            c2 = 8764231
+        elif random.randint(1, 10) == 5:
+            c2 = None
+        else:
+            c2 = random.randint(-87654297, 98765321)    
+
+
+        value = f"({self.ts}, "
+        self.ts += 1
+
+        # c1
+        if c1 is None:
+            value += "null,"
+        else:
+            self.c1Cnt += 1
+            value += f"{c1},"
+        # c2
+        if c2 is None:
+            value += "null)"
+        else:
+            value += f"{c2})"
+            # total count
+            self.c2Cnt += 1
+            # max
+            if self.c2Max is None:
+                self.c2Max = c2
+            else:
+                if c2 > self.c2Max:
+                    self.c2Max = c2
+            # min
+            if self.c2Min is None:
+                self.c2Min = c2
+            else:
+                if c2 < self.c2Min:
+                    self.c2Min = c2
+            # sum
+            if self.c2Sum is None:
+                self.c2Sum = c2
+            else:
+                self.c2Sum += c2
+
+        return value
+
+    # insert data
+    def insertData(self):
+        tdLog.info("insert data ....")
+        sqls = ""
+        for i in range(self.childCnt):
+            # insert child table
+            values = ""
+            pre_insert = f"insert into t{i} values "
+            for j in range(self.childRow):
+                if values == "":
+                    values = self.getColsValue(i, j)
+                else:
+                    values += "," + self.getColsValue(i, j)
+
+                # batch insert    
+                if j % self.batchSize == 0  and values != "":
+                    sql = pre_insert + values
+                    tdSql.execute(sql)
+                    values = ""
+            # append last
+            if values != "":
+                sql = pre_insert + values
+                tdSql.execute(sql)
+                values = ""
+
+        sql = "flush database db;"
+        tdLog.info(sql)
+        tdSql.execute(sql)
+        # insert finished
+        tdLog.info(f"insert data successfully.\n"
+        f"                            inserted child table = {self.childCnt}\n"
+        f"                            inserted child rows  = {self.childRow}\n"
+        f"                            total inserted rows  = {self.childCnt*self.childRow}\n")
+        return
+
+
+    # prepareEnv
+    def prepareEnv(self):
+        # init
+        self.ts = 1600000000000
+        self.childCnt = 5
+        self.childRow = 1000000
+        self.batchSize = 5000
+        
+        # total
+        self.c1Cnt = 0
+        self.c2Cnt = 0
+        self.c2Max = None
+        self.c2Min = None
+        self.c2Sum = None
+
+        # create database  db
+        sql = f"create database db vgroups 5 replica 3"
+        tdLog.info(sql)
+        tdSql.execute(sql)
+        sql = f"use db"
+        tdSql.execute(sql)
+
+        # create super talbe st
+        sql = f"create table st(ts timestamp, c1 int, c2 bigint) tags(area int)"
+        tdLog.info(sql)
+        tdSql.execute(sql)
+
+        # create child table
+        for i in range(self.childCnt):
+            sql = f"create table t{i} using st tags({i}) "
+            tdSql.execute(sql)
+
+        # insert data
+        self.insertData()
+
+    # query sql value
+    def queryValue(self, sql):
+        tdSql.query(sql)
+        return tdSql.getData(0, 0)
+    
+    # sum
+    def checkCorrentSum(self):
+        # query count
+        sql = "select sum(c1) from st"
+        val = self.queryValue(sql)
+        # c1Sum is equal c1Cnt
+        if  val != self.c1Cnt:
+            tdLog.exit(f"Sum Not Expect. expect={self.c1Cnt} query={val} sql:{sql}")
+            return 
+        
+        # not
+        sql1 = "select sum(c1) from st where c2 = 8764231"
+        val1 = self.queryValue(sql1)
+        sql2 = "select sum(c1) from st where c2 != 8764231"
+        val2 = self.queryValue(sql2)
+        sql3 = "select sum(c1) from st where c2 is null"
+        val3 = self.queryValue(sql3)
+        if  val != val1 + val2 + val3:
+            tdLog.exit(f"Sum Not Equal. val != val1 + val2 + val3. val={val} val1={val1} val2={val2} val2={val3} sql1={sql1} sql2={sql2} sql2={sql3}")
+            return 
+        
+        # over than
+        sql1 = "select sum(c1) from st where c2 > 8000"
+        val1 = self.queryValue(sql1)
+        sql2 = "select sum(c1) from st where c2 <= 8000"
+        val2 = self.queryValue(sql2)
+        sql3 = "select sum(c1) from st where c2 is null"
+        val3 = self.queryValue(sql3)
+        if  val != val1 + val2 + val3:
+            tdLog.exit(f"Sum Not Equal. val != val1 + val2 + val3. val={val} val1={val1} val2={val2} val2={val3} sql1={sql1} sql2={sql2} sql2={sql3}")
+            return 
+        
+        tdLog.info(f"check correct sum on c1 successfully.")
+
+    # check result
+    def checkResult(self, fun, val, val1, val2, sql1, sql2):
+        if fun == "count":
+            if  val != val1 + val2:
+                tdLog.exit(f"{fun} NOT SAME. val != val1 + val2. val={val} val1={val1} val2={val2} sql1={sql1} sql2={sql2}")
+                return
+        elif fun == "max":
+            if val != max([val1, val2]):
+                tdLog.exit(f"{fun} NOT SAME . val != max(val1 ,val2) val={val} val1={val1} val2={val2} sql1={sql1} sql2={sql2}")
+                return
+        elif fun == "min":
+            if val != min([val1, val2]):
+                tdLog.exit(f"{fun} NOT SAME . val != min(val1 ,val2) val={val} val1={val1} val2={val2} sql1={sql1} sql2={sql2}")
+                return
+
+    # sum
+    def checkCorrentFun(self, fun, expectVal):
+        # query
+        sql = f"select {fun}(c2) from st"
+        val = self.queryValue(sql)
+        if  val != expectVal:
+            tdLog.exit(f"{fun} Not Expect. expect={expectVal} query={val} sql:{sql}")
+            return 
+        
+        # not
+        sql1 = f"select {fun}(c2) from st where c2 = 8764231"
+        val1 = self.queryValue(sql1)
+        sql2 = f"select {fun}(c2) from st where c2 != 8764231"
+        val2 = self.queryValue(sql2)
+        self.checkResult(fun, val, val1, val2, sql1, sql2)
+        
+        # over than
+        sql1 = f"select {fun}(c2) from st where c2 > 8000"
+        val1 = self.queryValue(sql1)
+        sql2 = f"select {fun}(c2) from st where c2 <= 8000"
+        val2 = self.queryValue(sql2)
+        self.checkResult(fun, val, val1, val2, sql1, sql2)
+
+        # successful
+        tdLog.info(f"check correct {fun} on c2 successfully.")
+
+    # check query corrent
+    def checkCorrect(self):
+        # count
+        self.checkCorrentFun("count", self.c2Cnt)
+        # max
+        self.checkCorrentFun("max", self.c2Max)
+        # min
+        self.checkCorrentFun("min", self.c2Min)
+        # sum
+        self.checkCorrentSum()
+
+        # c2 sum
+        sql = "select sum(c2) from st"
+        val = self.queryValue(sql)
+        # c1Sum is equal c1Cnt
+        if  val != self.c2Sum:
+            tdLog.exit(f"c2 Sum Not Expect. expect={self.c2Sum} query={val} sql:{sql}")
+            return
+
+    def checkPerformance(self):
+        # have sma caculate
+        sql1 = "select count(*) from st"
+        stime = time.time()
+        tdSql.execute(sql1, 1)
+        spend1 = time.time() - stime
+        
+
+        # no sma caculate
+        sql2 = "select count(*) from st where c2 != 8764231 or c2 is null"
+        stime = time.time()
+        tdSql.execute(sql2, 1)
+        spend2 = time.time() - stime
+
+        time1 = "%.2f"%(spend1*1000)
+        time2 = "%.2f"%(spend2*1000)
+        if spend2 < spend1 * 8:
+            tdLog.exit(f"performance not passed! sma spend1={time1}ms no sma spend2= {time2}ms sql1={sql1} sql2= {sql2}")
+            return 
+        tdLog.info(f"performance passed! sma spend1={time1}ms no sma spend2= {time2}ms sql1={sql1} sql2= {sql2}")
+
+
+    # init
+    def init(self, conn, logSql, replicaVar=1):
+        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        random.seed(seed)
+        self.replicaVar = int(replicaVar)
+        tdLog.debug(f"start to excute {__file__}")
+        tdSql.init(conn.cursor(), True)
+
+    # run
+    def run(self):
+        # prepare env
+        self.prepareEnv()
+
+        # query 
+        self.checkCorrect()
+
+        # performance
+        self.checkPerformance()
+
+    # stop
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+
+tdCases.addLinux(__file__, TDTestCase())
+tdCases.addWindows(__file__, TDTestCase())