diff --git a/tests/system-test/2-query/select_index.py b/tests/system-test/2-query/select_index.py
new file mode 100755
index 0000000000..08f19fcf24
--- /dev/null
+++ b/tests/system-test/2-query/select_index.py
@@ -0,0 +1,651 @@
+###################################################################
+#           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 random
+import os
+import time
+import taos
+import subprocess
+from faker import Faker
+from util.log import tdLog
+from util.cases import tdCases
+from util.sql import tdSql
+from util.dnodes import tdDnodes
+from util.dnodes import *
+
+class TDTestCase:
+    updatecfgDict = {'maxSQLLength':1048576,'debugFlag': 143 ,"querySmaOptimize":1}
+    
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+        self.testcasePath = os.path.split(__file__)[0]
+        self.testcaseFilename = os.path.split(__file__)[-1]
+        os.system("rm -rf %s/%s.sql" % (self.testcasePath,self.testcaseFilename))
+        
+        self.db = "ind_sel"
+
+    def dropandcreateDB_random(self,database,n,vgroups):
+        ts = 1630000000000
+        num_random = 100
+        fake = Faker('zh_CN')
+        tdSql.execute('''drop database if exists %s ;''' %database)
+        tdSql.execute('''create database %s keep 36500 vgroups %d ;'''%(database,vgroups))
+        tdSql.execute('''use %s;'''%database)
+
+        tdSql.execute('''create stable %s.stable_1 (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp , \
+                q_binary1 binary(100) , q_nchar1 nchar(100) ,q_binary2 binary(100) , q_nchar2 nchar(100) ,q_binary3 binary(100) , q_nchar3 nchar(100) ,q_binary4 binary(100) , q_nchar4 nchar(100) ,\
+                q_binary5 binary(100) , q_nchar5 nchar(100) ,q_binary6 binary(100) , q_nchar6 nchar(100) ,q_binary7 binary(100) , q_nchar7 nchar(100) ,q_binary8 binary(100) , q_nchar8 nchar(100) ,\
+                q_int_null int , q_bigint_null bigint , q_smallint_null smallint , q_tinyint_null tinyint, q_float_null float , q_double_null double , q_bool_null bool , q_binary_null binary(20) , q_nchar_null nchar(20) , q_ts_null timestamp) \
+                tags(loc nchar(100) , t_int int , t_bigint bigint , t_smallint smallint , t_tinyint tinyint, t_bool bool , t_binary binary(100) , t_nchar nchar(100) ,t_float float , t_double double , t_ts timestamp);'''%database)
+        tdSql.execute('''create stable %s.stable_2 (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp , \
+                q_int_null int , q_bigint_null bigint , q_smallint_null smallint , q_tinyint_null tinyint, q_float_null float , q_double_null double , q_bool_null bool , q_binary_null binary(20) , q_nchar_null nchar(20) , q_ts_null timestamp) \
+                tags(loc nchar(100) , t_int int , t_bigint bigint , t_smallint smallint , t_tinyint tinyint, t_bool bool , t_binary binary(100) , t_nchar nchar(100) ,t_float float , t_double double , t_ts timestamp);'''%database)
+        
+        for i in range(10*n):
+            tdSql.execute('''create table %s.bj_%d (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp ) ;'''%(database,i))
+            tdSql.execute('''create table %s.sh_%d (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp ) ;'''%(database,i))
+            tdSql.execute('''create table %s.bj_table_%d_r (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp ) ;'''%(database,i))
+            tdSql.execute('''create table %s.sh_table_%d_r (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp ) ;'''%(database,i))
+            tdSql.execute('''create table %s.hn_table_%d_r \
+                    (ts timestamp , q_int int , q_bigint bigint , q_smallint smallint , q_tinyint tinyint , q_float float , q_double double , q_bool bool , q_binary binary(100) , q_nchar nchar(100) , q_ts timestamp , \
+                    q_binary1 binary(100) , q_nchar1 nchar(100) ,q_binary2 binary(100) , q_nchar2 nchar(100) ,q_binary3 binary(100) , q_nchar3 nchar(100) ,q_binary4 binary(100) , q_nchar4 nchar(100) ,\
+                    q_binary5 binary(100) , q_nchar5 nchar(100) ,q_binary6 binary(100) , q_nchar6 nchar(100) ,q_binary7 binary(100) , q_nchar7 nchar(100) ,q_binary8 binary(100) , q_nchar8 nchar(100) ,\
+                    q_int_null int , q_bigint_null bigint , q_smallint_null smallint , q_tinyint_null tinyint, q_float_null float , q_double_null double , q_bool_null bool , q_binary_null binary(20) , q_nchar_null nchar(20) , q_ts_null timestamp) ;'''%(database,i))
+            tdSql.execute('''create table %s.bj_stable_1_%d using %s.stable_1 tags('bj_stable_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1))) 
+            tdSql.execute('''create table %s.sh_table_%d_a using %s.stable_1 tags('sh_a_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1))) 
+            tdSql.execute('''create table %s.sh_table_%d_b using %s.stable_1 tags('sh_b_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1)))
+            tdSql.execute('''create table %s.sh_table_%d_c using %s.stable_1 tags('sh_c_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1)))
+            
+            tdSql.execute('''create table %s.bj_table_%d_a using %s.stable_1 tags('bj_a_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1))) 
+            tdSql.execute('''create table %s.bj_table_%d_b using %s.stable_1 tags('bj_b_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1)))
+            tdSql.execute('''create table %s.bj_table_%d_c using %s.stable_1 tags('bj_c_table_1_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1)))
+
+            
+            tdSql.execute('''create table %s.tj_table_%d_a using %s.stable_2 tags('tj_a_table_2_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1))) 
+            tdSql.execute('''create table %s.tj_table_%d_b using %s.stable_2 tags('tj_b_table_2_%d', '%d' , '%d', '%d' , '%d' , 1 , 'binary1.%s' , 'nchar1.%s' , '%f', '%f' ,'%d') ;''' 
+                      %(database,i,database,i,fake.random_int(min=-2147483647, max=2147483647, step=1), fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pystr() ,fake.pystr() ,fake.pyfloat(),fake.pyfloat(),fake.random_int(min=-2147483647, max=2147483647, step=1)))
+
+        # insert data
+        for i in range(num_random*n):        
+            tdSql.execute('''insert into %s.bj_stable_1_1  (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double , q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 0, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000, fake.random_int(min=-2147483647, max=2147483647, step=1), 
+                        fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+            tdSql.execute('''insert into  %s.hn_table_1_r (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 0, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000, fake.random_int(min=-2147483647, max=2147483647, step=1) , 
+                        fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1) , 
+                        fake.random_int(min=-32767, max=32767, step=1) , fake.random_int(min=-127, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+
+            tdSql.execute('''insert into %s.bj_stable_1_2 (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8)\
+                        values(%d, %d, %d, %d, %d, %f, %f, 1, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000, fake.random_int(min=0, max=2147483647, step=1), 
+                        fake.random_int(min=0, max=9223372036854775807, step=1), 
+                        fake.random_int(min=0, max=32767, step=1) , fake.random_int(min=0, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+            tdSql.execute('''insert into %s.hn_table_2_r (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 1, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000, fake.random_int(min=0, max=2147483647, step=1), 
+                        fake.random_int(min=0, max=9223372036854775807, step=1), 
+                        fake.random_int(min=0, max=32767, step=1) , fake.random_int(min=0, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+
+            tdSql.execute('''insert into %s.bj_stable_1_3 (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 0, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000, fake.random_int(min=-0, max=2147483647, step=1), 
+                        fake.random_int(min=-0, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-0, max=32767, step=1) , fake.random_int(min=-0, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+
+            tdSql.execute('''insert into %s.bj_stable_1_4 (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 0, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000 +1, fake.random_int(min=-0, max=2147483647, step=1), 
+                        fake.random_int(min=-0, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-0, max=32767, step=1) , fake.random_int(min=-0, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+
+            tdSql.execute('''insert into %s.bj_stable_1_5 (ts , q_int , q_bigint , q_smallint , q_tinyint , q_float , q_double, q_bool , q_binary , q_nchar, q_ts,\
+                        q_binary1 , q_nchar1 , q_binary2 , q_nchar2 , q_binary3 , q_nchar3 , q_binary4 , q_nchar4 , q_binary5 , q_nchar5 , q_binary6 , q_nchar6 , q_binary7 , q_nchar7, q_binary8 , q_nchar8) \
+                        values(%d, %d, %d, %d, %d, %f, %f, 0, 'binary.%s', 'nchar.%s', %d, 'binary1.%s', 'nchar1.%s', 'binary2.%s', 'nchar2.%s', 'binary3.%s', 'nchar3.%s', \
+                        'binary4.%s', 'nchar4.%s', 'binary5.%s', 'nchar5.%s', 'binary6.%s', 'nchar6.%s', 'binary7.%s', 'nchar7.%s', 'binary8.%s', 'nchar8.%s') ;''' 
+                        % (database,ts + i*1000 +10, fake.random_int(min=-0, max=2147483647, step=1), 
+                        fake.random_int(min=-0, max=9223372036854775807, step=1), 
+                        fake.random_int(min=-0, max=32767, step=1) , fake.random_int(min=-0, max=127, step=1) , 
+                        fake.pyfloat() , fake.pyfloat() , fake.pystr() , fake.pystr() , ts + i, fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , 
+                        fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr() , fake.pystr()))
+
+        tdSql.query("select count(*) from %s.stable_1;" %database)
+        tdSql.checkData(0,0,5*num_random*n)
+        tdSql.query("select count(*) from %s.hn_table_1_r;"%database)
+        tdSql.checkData(0,0,num_random*n)
+        
+    def func_index_check(self,database,func,column):  
+        fake = Faker('zh_CN')
+        fake_data =  fake.random_int(min=1, max=20, step=1) 
+        tdLog.info("\n=============constant(%s)_check ====================\n" %func)  
+        tdSql.execute(" create sma index sma_index_name1 on stable_1 function(%s(%s)) interval(%dm); " %(func,column,fake_data))  
+        sql = " select %s(%s) from %s.stable_1 interval(1m) "%(func,column,database)
+        tdLog.info(sql)
+        tdSql.query(sql) 
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_before_value = tdSql.queryResult[i][0]
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_after_value = tdSql.queryResult[i][0]
+        
+        self.value_check(flush_before_value,flush_after_value)
+        
+        tdLog.info("\n=============drop index ====================\n")
+        
+        tdSql.execute(" drop index sma_index_name1;")
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            drop_index_value = tdSql.queryResult[i][0]
+        
+        self.value_check(flush_before_value,drop_index_value)
+       
+        
+    def constant_check(self,database,func,column):    
+        tdLog.info("\n=============constant(%s)_check ====================\n" %column) 
+        sql = " select %s(%s) from %s.stable_1 "%(func,column,database)
+        tdLog.info(sql)
+        tdSql.query(sql) 
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_before_value = tdSql.queryResult[i][0]
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_after_value = tdSql.queryResult[i][0]
+        
+        self.value_check(flush_before_value,flush_after_value)
+        
+    def constant_table_check(self,database,func,column):    
+        tdLog.info("\n=============constant(%s)_check ====================\n" %column) 
+        sql = " select %s(%s) from %s.bj_stable_1_1 "%(func,column,database)
+        tdLog.info(sql)
+        tdSql.query(sql) 
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_before_value = tdSql.queryResult[i][0]
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_after_value = tdSql.queryResult[i][0]
+        
+        self.value_check(flush_before_value,flush_after_value)
+        
+    def constant_str_check(self,database,func,column):    
+        tdLog.info("\n=============constant(%s)_check ====================\n" %column) 
+        sql = " select %s('%s') from %s.stable_1 "%(func,column,database)
+        tdLog.info(sql)
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_before_value = tdSql.queryResult[i][0]
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_after_value = tdSql.queryResult[i][0]
+        
+        self.value_check(flush_before_value,flush_after_value)  
+                 
+        
+    def constant_error_check(self,database,func,column):    
+        tdLog.info("\n=============constant(%s)_check ====================\n" %column) 
+        error_sql = " select %s('%s')  "%(func,column)
+        tdLog.info(error_sql)
+        tdSql.error(error_sql)  
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.error(error_sql) 
+        
+    def derivative_sql(self,database):    
+        fake = Faker('zh_CN')
+        fake_data =  fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1)
+        tdLog.info("\n=============derivative sql ====================\n" )  
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 "%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)  
+         
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 "%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)    
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts"%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts "%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)  
+         
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts "%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)  
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc"%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,0) from %s.stable_1 order by ts desc "%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)  
+         
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc "%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc"%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql) 
+        
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000"%('q_smallint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000 "%('q_bigint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000 "%('q_tinyint',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000 "%('q_int',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000 "%('q_float',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql)
+        
+        sql = " select derivative(%s,%ds,1) from %s.stable_1 order by ts desc limit 3000"%('q_double',fake_data,database) 
+        self.derivative_data_check("%s" %self.db,"%s" %sql) 
+        
+    def derivative_data_check(self,database,sql):    
+        tdLog.info("\n=============derivative_data(%s)_check ====================\n" %sql) 
+        tdLog.info(sql)
+        tdSql.query(sql) 
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            #print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_before_value = tdSql.queryResult[i][0]
+            #flush_before_value1 = tdSql.queryResult[i][1]
+        
+        tdLog.info("\n=============flush database ====================\n")
+        
+        tdSql.execute(" flush database %s;" %database)
+        
+        tdSql.query(sql)  
+        queryRows = len(tdSql.queryResult)    
+        for i in range(queryRows):
+            #print("row=%d,  result=%s " %(i,tdSql.queryResult[i][0]))
+            flush_after_value = tdSql.queryResult[i][0]
+            #flush_after_value1 = tdSql.queryResult[i][1]
+        
+        self.value_check(flush_before_value,flush_after_value)
+        #self.value_check(flush_before_value1,flush_after_value1)
+        
+                      
+    def value_check(self,flush_before_value,flush_after_value):
+        if flush_before_value==flush_after_value:
+            tdLog.info(f"checkEqual success, flush_before_value={flush_before_value},flush_after_value={flush_after_value}") 
+        else :
+            tdLog.exit(f"checkEqual error, flush_before_value=={flush_before_value},flush_after_value={flush_after_value}") 
+                            
+    def run(self):      
+        fake = Faker('zh_CN')
+        fake_data =  fake.random_int(min=-9223372036854775807, max=9223372036854775807, step=1)
+        fake_float = fake.pyfloat()
+        fake_str = fake.pystr()
+        
+        startTime = time.time()  
+                  
+        os.system("rm -rf %s/%s.sql" % (self.testcasePath,self.testcaseFilename)) 
+        
+        self.dropandcreateDB_random("%s" %self.db, 1,2)
+        
+        #TD-19818
+        self.func_index_check("%s" %self.db,'max','q_int')
+        self.func_index_check("%s" %self.db,'max','q_bigint')
+        self.func_index_check("%s" %self.db,'max','q_smallint')
+        self.func_index_check("%s" %self.db,'max','q_tinyint')
+        self.func_index_check("%s" %self.db,'max','q_float')
+        self.func_index_check("%s" %self.db,'max','q_double')        
+        
+        self.func_index_check("%s" %self.db,'min','q_int')
+        self.func_index_check("%s" %self.db,'min','q_bigint')
+        self.func_index_check("%s" %self.db,'min','q_smallint')
+        self.func_index_check("%s" %self.db,'min','q_tinyint')
+        self.func_index_check("%s" %self.db,'min','q_float')
+        self.func_index_check("%s" %self.db,'min','q_double') 
+                
+        self.func_index_check("%s" %self.db,'SUM','q_int')
+        self.func_index_check("%s" %self.db,'SUM','q_bigint')
+        self.func_index_check("%s" %self.db,'SUM','q_smallint')
+        self.func_index_check("%s" %self.db,'SUM','q_tinyint')
+        self.func_index_check("%s" %self.db,'SUM','q_float')
+        self.func_index_check("%s" %self.db,'SUM','q_double')
+        
+        #TD-19854
+        self.constant_check("%s" %self.db,'count','%d' %fake_data)
+        self.constant_check("%s" %self.db,'count','%f' %fake_float)        
+        self.constant_str_check("%s" %self.db,'count','%s' %fake_str)  
+        self.constant_check("%s" %self.db,'count','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'count','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'count','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'count','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'count','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'count','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'count','(cast(%f as double))' %fake_float)
+        
+        self.constant_check("%s" %self.db,'sum','%d' %fake_data)
+        self.constant_check("%s" %self.db,'sum','%f' %fake_float)        
+        self.constant_error_check("%s" %self.db,'sum','%s' %fake_str)                
+        self.constant_check("%s" %self.db,'sum','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'sum','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'sum','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'sum','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'sum','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'sum','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'sum','(cast(%f as double))' %fake_float)
+        
+        self.constant_check("%s" %self.db,'avg','%d' %fake_data)
+        self.constant_check("%s" %self.db,'avg','%f' %fake_float)        
+        self.constant_error_check("%s" %self.db,'avg','%s' %fake_str)                
+        self.constant_check("%s" %self.db,'avg','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'avg','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'avg','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'avg','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'avg','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'avg','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'avg','(cast(%f as double))' %fake_float)
+        
+        self.constant_check("%s" %self.db,'stddev','%d' %fake_data)
+        self.constant_check("%s" %self.db,'stddev','%f' %fake_float)        
+        self.constant_error_check("%s" %self.db,'stddev','%s' %fake_str)                
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'stddev','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'stddev','(cast(%f as double))' %fake_float)
+        
+        self.constant_check("%s" %self.db,'spread','%d' %fake_data)
+        self.constant_check("%s" %self.db,'spread','%f' %fake_float)        
+        self.constant_error_check("%s" %self.db,'spread','%s' %fake_str)                
+        self.constant_check("%s" %self.db,'spread','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'spread','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'spread','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'spread','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'spread','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'spread','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'spread','(cast(%f as double))' %fake_float)
+        
+        self.constant_check("%s" %self.db,'hyperloglog','%d' %fake_data)
+        self.constant_check("%s" %self.db,'hyperloglog','%f' %fake_float)        
+        self.constant_str_check("%s" %self.db,'hyperloglog','%s' %fake_str)                
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as int))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as int))' %fake_float)
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as smallint))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as smallint))' %fake_float)
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as bigint))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as bigint))' %fake_float)
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as tinyint))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as tinyint))' %fake_float)
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as float))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as float))' %fake_float)
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%d as double))' %fake_data)          
+        self.constant_check("%s" %self.db,'hyperloglog','(cast(%f as double))' %fake_float)
+        
+        percentile_data =  fake.random_int(min=-0, max=100, step=1)
+        self.constant_table_check("%s" %self.db,'percentile','%d,%d' %(fake_data,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','%f,%d' %(fake_float,percentile_data))        
+        self.constant_error_check("%s" %self.db,'percentile','%s,%d' %(fake_str,percentile_data))                 
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as int)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as int)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as smallint)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as smallint)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as bigint)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as bigint)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as tinyint)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as tinyint)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as float)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as float)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%d as double)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'percentile','(cast(%f as double)),%d' %(fake_float,percentile_data))
+        
+        self.constant_table_check("%s" %self.db,'apercentile','%d,%d' %(fake_data,percentile_data))
+        self.constant_check("%s" %self.db,'apercentile','%f,%d' %(fake_float,percentile_data))        
+        self.constant_error_check("%s" %self.db,'apercentile','%s,%d' %(fake_str,percentile_data))                 
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%d as int)),%d' %(fake_data,percentile_data))          
+        self.constant_check("%s" %self.db,'apercentile','(cast(%f as int)),%d' %(fake_float,percentile_data))
+        self.constant_check("%s" %self.db,'apercentile','(cast(%d as smallint)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%f as smallint)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%d as bigint)),%d' %(fake_data,percentile_data))          
+        self.constant_check("%s" %self.db,'apercentile','(cast(%f as bigint)),%d' %(fake_float,percentile_data))
+        self.constant_check("%s" %self.db,'apercentile','(cast(%d as tinyint)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%f as tinyint)),%d' %(fake_float,percentile_data))
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%d as float)),%d' %(fake_data,percentile_data))          
+        self.constant_check("%s" %self.db,'apercentile','(cast(%f as float)),%d' %(fake_float,percentile_data))
+        self.constant_check("%s" %self.db,'apercentile','(cast(%d as double)),%d' %(fake_data,percentile_data))          
+        self.constant_table_check("%s" %self.db,'apercentile','(cast(%f as double)),%d' %(fake_float,percentile_data))
+        
+        # percentile_data =  fake.random_int(min=-0, max=1, step=1)
+        # self.constant_table_check("%s" %self.db,'histogram','%d' %fake_data,'user_input','[-10000,0,10000]','%d' %percentile_data)
+        # self.constant_check("%s" %self.db,'histogram','%f,%d' %(fake_float,percentile_data))        
+        # self.constant_error_check("%s" %self.db,'histogram','%s,%d' %(fake_str,percentile_data))  
+      
+        #TD-19843
+        self.derivative_sql("%s" %self.db)
+        
+        
+        #taos -f sql 
+        print("taos -f sql start!")
+        taos_cmd1 = "taos -f %s/%s.sql" % (self.testcasePath,self.testcaseFilename)
+        _ = subprocess.check_output(taos_cmd1, shell=True)
+        print("taos -f sql over!")     
+                
+
+        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())