diff --git a/tests/system-test/1-insert/delete_data.py b/tests/system-test/1-insert/delete_data.py
index c085d2763a5816897a3f0dc00b7e1e59fb6d47cd..718a4497dc5b87200f338c45bc92151c48451f1e 100644
--- a/tests/system-test/1-insert/delete_data.py
+++ b/tests/system-test/1-insert/delete_data.py
@@ -1,312 +1,313 @@
-###################################################################
-#           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 string
-
-from numpy import logspace
-from util import constant
-from util.log import *
-from util.cases import *
-from util.sql import *
-from util.common import *
-from util.sqlset import TDSetSql
-
-class TDTestCase:
-    def init(self, conn, logSql, replicaVar=1):
-        self.replicaVar = int(replicaVar)
-        tdLog.debug("start to execute %s" % __file__)
-        tdSql.init(conn.cursor(), True)
-        self.dbname = 'db_test'
-        self.setsql = TDSetSql()
-        self.stbname = 'stb'
-        self.ntbname = 'ntb'
-        self.rowNum = 10
-        self.tbnum = 3
-        self.ts = 1537146000000
-        self.binary_str = 'taosdata'
-        self.nchar_str = '涛思数据'
-        self.str_length = 20
-        self.column_dict = {
-            'col1': 'tinyint',
-            'col2': 'smallint',
-            'col3': 'int',
-            'col4': 'bigint',
-            'col5': 'tinyint unsigned',
-            'col6': 'smallint unsigned',
-            'col7': 'int unsigned',
-            'col8': 'bigint unsigned',
-            'col9': 'float',
-            'col10': 'double',
-            'col11': 'bool',
-            'col12': f'binary({self.str_length})',
-            'col13': f'nchar({self.str_length})',
-
-        }
-
-        self.tinyint_val = random.randint(constant.TINYINT_MIN,constant.TINYINT_MAX)
-        self.smallint_val = random.randint(constant.SMALLINT_MIN,constant.SMALLINT_MAX)
-        self.int_val = random.randint(constant.INT_MIN,constant.INT_MAX)
-        self.bigint_val = random.randint(constant.BIGINT_MIN,constant.BIGINT_MAX)
-        self.untingint_val = random.randint(constant.TINYINT_UN_MIN,constant.TINYINT_UN_MAX)
-        self.unsmallint_val = random.randint(constant.SMALLINT_UN_MIN,constant.SMALLINT_UN_MAX)
-        self.unint_val = random.randint(constant.INT_UN_MIN,constant.INT_MAX)
-        self.unbigint_val = random.randint(constant.BIGINT_UN_MIN,constant.BIGINT_UN_MAX)
-        self.float_val = random.uniform(constant.FLOAT_MIN,constant.FLOAT_MAX)
-        self.double_val = random.uniform(constant.DOUBLE_MIN*(1E-300),constant.DOUBLE_MAX*(1E-300))
-        self.bool_val = random.randint(0,100)%2
-        self.binary_val = tdCom.getLongName(random.randint(0,self.str_length))
-        self.nchar_val = tdCom.getLongName(random.randint(0,self.str_length))
-        self.base_data = {
-            'tinyint':self.tinyint_val,
-            'smallint':self.smallint_val,
-            'int':self.int_val,
-            'bigint':self.bigint_val,
-            'tinyint unsigned':self.untingint_val,
-            'smallint unsigned':self.unsmallint_val,
-            'int unsigned':self.unint_val,
-            'bigint unsigned':self.unbigint_val,
-            'bool':self.bool_val,
-            'float':self.float_val,
-            'double':self.double_val,
-            'binary':self.binary_val,
-            'nchar':self.nchar_val
-                    }
-        
-    def insert_base_data(self,col_type,tbname,rows,base_data):
-        for i in range(rows):
-            if col_type.lower() == 'tinyint':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["tinyint"]})')
-            elif col_type.lower() == 'smallint':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["smallint"]})')
-            elif col_type.lower() == 'int':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["int"]})')
-            elif col_type.lower() == 'bigint':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bigint"]})')
-            elif col_type.lower() == 'tinyint unsigned':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["tinyint unsigned"]})')
-            elif col_type.lower() == 'smallint unsigned':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["smallint unsigned"]})')
-            elif col_type.lower() == 'int unsigned':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["int unsigned"]})')
-            elif col_type.lower() == 'bigint unsigned':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bigint unsigned"]})')
-            elif col_type.lower() == 'bool':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bool"]})')
-            elif col_type.lower() == 'float':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["float"]})')
-            elif col_type.lower() == 'double':
-                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["double"]})')
-            elif 'binary' in col_type.lower():
-                tdSql.execute(f'''insert into {tbname} values({self.ts+i},"{base_data['binary']}")''')
-            elif 'nchar' in col_type.lower():
-                tdSql.execute(f'''insert into {tbname} values({self.ts+i},"{base_data['nchar']}")''')
-    def delete_all_data(self,tbname,col_type,row_num,base_data,dbname,tb_type,tb_num=1,stbname=''):
-        tdSql.query(f'select count(*) from {tbname}')
-        tdSql.execute(f'delete from {tbname}')
-        tdSql.execute(f'flush database {dbname}')
-        tdSql.execute('reset query cache')
-        tdSql.query(f'select * from {tbname}')
-        tdSql.checkRows(0)
-        if tb_type == 'ntb' or tb_type == 'ctb':
-            if tb_type == 'ctb':
-                tdSql.query(f'select count(*) from {stbname}')
-                if tb_num <= 1:
-                    if len(tdSql.queryResult) != 0:
-                        tdLog.exit('delete case failure!')
-                else:
-                    tdSql.checkEqual(tdSql.queryResult[0][0],(tb_num-1)*row_num)
-
-            self.insert_base_data(col_type,tbname,row_num,base_data)
-        elif tb_type == 'stb':
-            for i in range(tb_num):
-                self.insert_base_data(col_type,f'{tbname}_{i}',row_num,base_data)
-        tdSql.execute(f'flush database {dbname}')
-        tdSql.execute('reset query cache')
-        tdSql.query(f'select * from {tbname}')
-        if tb_type == 'ntb' or tb_type == 'ctb':
-            tdSql.checkRows(row_num)
-        elif tb_type =='stb':
-            tdSql.checkRows(row_num*tb_num)
-    def delete_one_row(self,tbname,column_type,column_name,base_data,row_num,dbname,tb_type,tb_num=1):
-        tdSql.execute(f'delete from {tbname} where ts={self.ts}')
-        tdSql.execute(f'flush database {dbname}')
-        tdSql.execute('reset query cache')
-        tdSql.query(f'select {column_name} from {tbname}')
-        if tb_type == 'ntb' or tb_type == 'ctb':
-            tdSql.checkRows(row_num-1)
-        elif tb_type == 'stb':
-            tdSql.checkRows((row_num-1)*tb_num)
-        tdSql.query(f'select {column_name} from {tbname} where ts={self.ts}')
-        tdSql.checkRows(0)
-        if tb_type == 'ntb' or tb_type == 'ctb':
-            if 'binary' in column_type.lower():
-                tdSql.execute(f'''insert into {tbname} values({self.ts},"{base_data['binary']}")''')
-            elif 'nchar' in column_type.lower():
-                tdSql.execute(f'''insert into {tbname} values({self.ts},"{base_data['nchar']}")''')
-            else:
-                tdSql.execute(f'insert into {tbname} values({self.ts},{base_data[column_type]})')
-        elif tb_type == 'stb':
-            for i in range(tb_num):
-                if 'binary' in column_type.lower():
-                    tdSql.execute(f'''insert into {tbname}_{i} values({self.ts},"{base_data['binary']}")''')
-                elif 'nchar' in column_type.lower():
-                    tdSql.execute(f'''insert into {tbname}_{i} values({self.ts},"{base_data['nchar']}")''')
-                else:
-                    tdSql.execute(f'insert into {tbname}_{i} values({self.ts},{base_data[column_type]})')
-        tdSql.query(f'select {column_name} from {tbname} where ts={self.ts}')
-        if column_type.lower() == 'float' or column_type.lower() == 'double':
-            if abs(tdSql.queryResult[0][0] - base_data[column_type]) / base_data[column_type] <= 0.0001:
-                tdSql.checkEqual(tdSql.queryResult[0][0],tdSql.queryResult[0][0])
-            else:
-                tdLog.exit(f'{column_type} data check failure')
-        elif 'binary' in column_type.lower():
-            tdSql.checkEqual(tdSql.queryResult[0][0],base_data['binary'])
-        elif 'nchar' in column_type.lower():
-            tdSql.checkEqual(tdSql.queryResult[0][0],base_data['nchar'])
-        else:
-            tdSql.checkEqual(tdSql.queryResult[0][0],base_data[column_type])
-    def delete_rows(self,dbname,tbname,col_name,col_type,base_data,row_num,tb_type,tb_num=1):
-        for i in range(row_num):
-            tdSql.execute(f'delete from {tbname} where ts>{self.ts+i}')
-            tdSql.execute(f'flush database {dbname}')
-            tdSql.execute('reset query cache')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(i+1)
-                self.insert_base_data(col_type,tbname,row_num,base_data)
-            elif tb_type == 'stb':
-                tdSql.checkRows((i+1)*tb_num)
-                for j in range(tb_num):
-                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
-        for i in range(row_num):
-            tdSql.execute(f'delete from {tbname} where ts>={self.ts+i}')
-            tdSql.execute(f'flush database {dbname}')
-            tdSql.execute('reset query cache')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(i)
-                self.insert_base_data(col_type,tbname,row_num,base_data)
-            elif tb_type == 'stb':
-                tdSql.checkRows(i*tb_num)
-                for j in range(tb_num):
-                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
-        for i in range(row_num):
-            tdSql.execute(f'delete from {tbname} where ts<={self.ts+i}')
-            tdSql.execute(f'flush database {dbname}')
-            tdSql.execute('reset query cache')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(row_num-i-1)
-                self.insert_base_data(col_type,tbname,row_num,base_data)
-            elif tb_type == 'stb':
-                tdSql.checkRows((row_num-i-1)*tb_num)
-                for j in range(tb_num):
-                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
-        for i in range(row_num):
-            tdSql.execute(f'delete from {tbname} where ts<{self.ts+i}')
-            tdSql.execute(f'flush database {dbname}')
-            tdSql.execute('reset query cache')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(row_num-i)
-                self.insert_base_data(col_type,tbname,row_num,base_data)
-            elif tb_type == 'stb':
-                tdSql.checkRows((row_num-i)*tb_num)
-                for j in range(tb_num):
-                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
-        for i in range(row_num):
-            tdSql.execute(f'delete from {tbname} where ts between {self.ts} and {self.ts+i}')
-            tdSql.execute(f'flush database {dbname}')
-            tdSql.execute('reset query cache')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(row_num - i-1)
-                self.insert_base_data(col_type,tbname,row_num,base_data)
-            elif tb_type == 'stb':
-                tdSql.checkRows(tb_num*(row_num - i-1))
-                for j in range(tb_num):
-                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
-            tdSql.execute(f'delete from {tbname} where ts between {self.ts+i+1} and {self.ts}')
-            tdSql.query(f'select {col_name} from {tbname}')
-            if tb_type == 'ntb' or tb_type == 'ctb':
-                tdSql.checkRows(row_num)
-            elif tb_type == 'stb':
-                tdSql.checkRows(tb_num*row_num)
-    def delete_error(self,tbname,column_name,column_type,base_data):
-        for error_list in ['',f'ts = {self.ts} and',f'ts = {self.ts} or']:
-            if 'binary' in column_type.lower():
-                tdSql.error(f'''delete from {tbname} where {error_list} {column_name} ="{base_data['binary']}"''')
-            elif 'nchar' in column_type.lower():
-                tdSql.error(f'''delete from {tbname} where {error_list} {column_name} ="{base_data['nchar']}"''')
-            else:
-                tdSql.error(f'delete from {tbname} where {error_list} {column_name} = {base_data[column_type]}')
-
-    def delete_data_ntb(self):
-        tdSql.execute(f'create database if not exists {self.dbname}')
-        tdSql.execute(f'use {self.dbname}')
-        for col_name,col_type in self.column_dict.items():
-            tdSql.execute(f'create table {self.ntbname} (ts timestamp,{col_name} {col_type})')
-            self.insert_base_data(col_type,self.ntbname,self.rowNum,self.base_data)
-            self.delete_one_row(self.ntbname,col_type,col_name,self.base_data,self.rowNum,self.dbname,'ntb')
-            self.delete_all_data(self.ntbname,col_type,self.rowNum,self.base_data,self.dbname,'ntb')
-            self.delete_error(self.ntbname,col_name,col_type,self.base_data)
-            self.delete_rows(self.dbname,self.ntbname,col_name,col_type,self.base_data,self.rowNum,'ntb')
-            for func in ['first','last']:
-                tdSql.query(f'select {func}(*) from {self.ntbname}')
-            tdSql.execute(f'drop table {self.ntbname}')
-        tdSql.execute(f'drop database {self.dbname}')
-    def delete_data_ctb(self):
-        tdSql.execute(f'create database if not exists {self.dbname}')
-        tdSql.execute(f'use {self.dbname}')
-        for col_name,col_type in self.column_dict.items():
-            tdSql.execute(f'create table {self.stbname} (ts timestamp,{col_name} {col_type}) tags(t1 int)')
-            for i in range(self.tbnum):
-                tdSql.execute(f'create table {self.stbname}_{i} using {self.stbname} tags(1)')
-                self.insert_base_data(col_type,f'{self.stbname}_{i}',self.rowNum,self.base_data)
-                self.delete_one_row(f'{self.stbname}_{i}',col_type,col_name,self.base_data,self.rowNum,self.dbname,'ctb')
-                self.delete_all_data(f'{self.stbname}_{i}',col_type,self.rowNum,self.base_data,self.dbname,'ctb',i+1,self.stbname)
-                self.delete_error(f'{self.stbname}_{i}',col_name,col_type,self.base_data)
-                self.delete_rows(self.dbname,f'{self.stbname}_{i}',col_name,col_type,self.base_data,self.rowNum,'ctb')
-                for func in ['first','last']:
-                    tdSql.query(f'select {func}(*) from {self.stbname}_{i}')
-            tdSql.execute(f'drop table {self.stbname}')
-    def delete_data_stb(self):
-        tdSql.execute(f'create database if not exists {self.dbname}')
-        tdSql.execute(f'use {self.dbname}')
-        for col_name,col_type in self.column_dict.items():
-            tdSql.execute(f'create table {self.stbname} (ts timestamp,{col_name} {col_type}) tags(t1 int)')
-            for i in range(self.tbnum):
-                tdSql.execute(f'create table {self.stbname}_{i} using {self.stbname} tags(1)')
-                self.insert_base_data(col_type,f'{self.stbname}_{i}',self.rowNum,self.base_data)
-            self.delete_error(self.stbname,col_name,col_type,self.base_data)
-            self.delete_one_row(self.stbname,col_type,col_name,self.base_data,self.rowNum,self.dbname,'stb',self.tbnum)
-            self.delete_all_data(self.stbname,col_type,self.rowNum,self.base_data,self.dbname,'stb',self.tbnum)
-            self.delete_rows(self.dbname,self.stbname,col_name,col_type,self.base_data,self.rowNum,'stb',self.tbnum)
-            for func in ['first','last']:
-                tdSql.query(f'select {func}(*) from {self.stbname}')
-            tdSql.execute(f'drop table {self.stbname}')
-        tdSql.execute(f'drop database {self.dbname}')
-    def run(self):
-        self.delete_data_ntb()
-        self.delete_data_ctb()
-        self.delete_data_stb()
-        tdDnodes.stoptaosd(1)
-        tdDnodes.starttaosd(1)
-        self.delete_data_ntb()
-    def stop(self):
-        tdSql.close()
-        tdLog.success("%s successfully executed" % __file__)
-
-tdCases.addWindows(__file__, TDTestCase())
-tdCases.addLinux(__file__, TDTestCase())
+
+###################################################################
+#           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 string
+
+from numpy import logspace
+from util import constant
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.common import *
+from util.sqlset import TDSetSql
+
+class TDTestCase:
+    def init(self, conn, logSql, replicaVar=1):
+        self.replicaVar = int(replicaVar)
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), True)
+        self.dbname = 'db_test'
+        self.setsql = TDSetSql()
+        self.stbname = 'stb'
+        self.ntbname = 'ntb'
+        self.rowNum = 10
+        self.tbnum = 3
+        self.ts = 1537146000000
+        self.binary_str = 'taosdata'
+        self.nchar_str = '涛思数据'
+        self.str_length = 20
+        self.column_dict = {
+            'col1': 'tinyint',
+            'col2': 'smallint',
+            'col3': 'int',
+            'col4': 'bigint',
+            'col5': 'tinyint unsigned',
+            'col6': 'smallint unsigned',
+            'col7': 'int unsigned',
+            'col8': 'bigint unsigned',
+            'col9': 'float',
+            'col10': 'double',
+            'col11': 'bool',
+            'col12': f'binary({self.str_length})',
+            'col13': f'nchar({self.str_length})',
+
+        }
+
+        self.tinyint_val = random.randint(constant.TINYINT_MIN,constant.TINYINT_MAX)
+        self.smallint_val = random.randint(constant.SMALLINT_MIN,constant.SMALLINT_MAX)
+        self.int_val = random.randint(constant.INT_MIN,constant.INT_MAX)
+        self.bigint_val = random.randint(constant.BIGINT_MIN,constant.BIGINT_MAX)
+        self.untingint_val = random.randint(constant.TINYINT_UN_MIN,constant.TINYINT_UN_MAX)
+        self.unsmallint_val = random.randint(constant.SMALLINT_UN_MIN,constant.SMALLINT_UN_MAX)
+        self.unint_val = random.randint(constant.INT_UN_MIN,constant.INT_MAX)
+        self.unbigint_val = random.randint(constant.BIGINT_UN_MIN,constant.BIGINT_UN_MAX)
+        self.float_val = random.uniform(constant.FLOAT_MIN,constant.FLOAT_MAX)
+        self.double_val = random.uniform(constant.DOUBLE_MIN*(1E-300),constant.DOUBLE_MAX*(1E-300))
+        self.bool_val = random.randint(0,100)%2
+        self.binary_val = tdCom.getLongName(random.randint(0,self.str_length))
+        self.nchar_val = tdCom.getLongName(random.randint(0,self.str_length))
+        self.base_data = {
+            'tinyint':self.tinyint_val,
+            'smallint':self.smallint_val,
+            'int':self.int_val,
+            'bigint':self.bigint_val,
+            'tinyint unsigned':self.untingint_val,
+            'smallint unsigned':self.unsmallint_val,
+            'int unsigned':self.unint_val,
+            'bigint unsigned':self.unbigint_val,
+            'bool':self.bool_val,
+            'float':self.float_val,
+            'double':self.double_val,
+            'binary':self.binary_val,
+            'nchar':self.nchar_val
+                    }
+        
+    def insert_base_data(self,col_type,tbname,rows,base_data):
+        for i in range(rows):
+            if col_type.lower() == 'tinyint':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["tinyint"]})')
+            elif col_type.lower() == 'smallint':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["smallint"]})')
+            elif col_type.lower() == 'int':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["int"]})')
+            elif col_type.lower() == 'bigint':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bigint"]})')
+            elif col_type.lower() == 'tinyint unsigned':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["tinyint unsigned"]})')
+            elif col_type.lower() == 'smallint unsigned':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["smallint unsigned"]})')
+            elif col_type.lower() == 'int unsigned':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["int unsigned"]})')
+            elif col_type.lower() == 'bigint unsigned':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bigint unsigned"]})')
+            elif col_type.lower() == 'bool':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["bool"]})')
+            elif col_type.lower() == 'float':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["float"]})')
+            elif col_type.lower() == 'double':
+                tdSql.execute(f'insert into {tbname} values({self.ts+i},{base_data["double"]})')
+            elif 'binary' in col_type.lower():
+                tdSql.execute(f'''insert into {tbname} values({self.ts+i},"{base_data['binary']}")''')
+            elif 'nchar' in col_type.lower():
+                tdSql.execute(f'''insert into {tbname} values({self.ts+i},"{base_data['nchar']}")''')
+    def delete_all_data(self,tbname,col_type,row_num,base_data,dbname,tb_type,tb_num=1,stbname=''):
+        tdSql.query(f'select count(*) from {tbname}')
+        tdSql.execute(f'delete from {tbname}')
+        tdSql.execute(f'flush database {dbname}')
+        tdSql.execute('reset query cache')
+        tdSql.query(f'select * from {tbname}')
+        tdSql.checkRows(0)
+        if tb_type == 'ntb' or tb_type == 'ctb':
+            if tb_type == 'ctb':
+                tdSql.query(f'select count(*) from {stbname}')
+                if tb_num <= 1:
+                    if len(tdSql.queryResult) != 0:
+                        tdLog.exit('delete case failure!')
+                else:
+                    tdSql.checkEqual(tdSql.queryResult[0][0],(tb_num-1)*row_num)
+
+            self.insert_base_data(col_type,tbname,row_num,base_data)
+        elif tb_type == 'stb':
+            for i in range(tb_num):
+                self.insert_base_data(col_type,f'{tbname}_{i}',row_num,base_data)
+        tdSql.execute(f'flush database {dbname}')
+        tdSql.execute('reset query cache')
+        tdSql.query(f'select * from {tbname}')
+        if tb_type == 'ntb' or tb_type == 'ctb':
+            tdSql.checkRows(row_num)
+        elif tb_type =='stb':
+            tdSql.checkRows(row_num*tb_num)
+    def delete_one_row(self,tbname,column_type,column_name,base_data,row_num,dbname,tb_type,tb_num=1):
+        tdSql.execute(f'delete from {tbname} where ts={self.ts}')
+        tdSql.execute(f'flush database {dbname}')
+        tdSql.execute('reset query cache')
+        tdSql.query(f'select {column_name} from {tbname}')
+        if tb_type == 'ntb' or tb_type == 'ctb':
+            tdSql.checkRows(row_num-1)
+        elif tb_type == 'stb':
+            tdSql.checkRows((row_num-1)*tb_num)
+        tdSql.query(f'select {column_name} from {tbname} where ts={self.ts}')
+        tdSql.checkRows(0)
+        if tb_type == 'ntb' or tb_type == 'ctb':
+            if 'binary' in column_type.lower():
+                tdSql.execute(f'''insert into {tbname} values({self.ts},"{base_data['binary']}")''')
+            elif 'nchar' in column_type.lower():
+                tdSql.execute(f'''insert into {tbname} values({self.ts},"{base_data['nchar']}")''')
+            else:
+                tdSql.execute(f'insert into {tbname} values({self.ts},{base_data[column_type]})')
+        elif tb_type == 'stb':
+            for i in range(tb_num):
+                if 'binary' in column_type.lower():
+                    tdSql.execute(f'''insert into {tbname}_{i} values({self.ts},"{base_data['binary']}")''')
+                elif 'nchar' in column_type.lower():
+                    tdSql.execute(f'''insert into {tbname}_{i} values({self.ts},"{base_data['nchar']}")''')
+                else:
+                    tdSql.execute(f'insert into {tbname}_{i} values({self.ts},{base_data[column_type]})')
+        tdSql.query(f'select {column_name} from {tbname} where ts={self.ts}')
+        if column_type.lower() == 'float' or column_type.lower() == 'double':
+            if abs(tdSql.queryResult[0][0] - base_data[column_type]) / base_data[column_type] <= 0.0001:
+                tdSql.checkEqual(tdSql.queryResult[0][0],tdSql.queryResult[0][0])
+            else:
+                tdLog.exit(f'{column_type} data check failure')
+        elif 'binary' in column_type.lower():
+            tdSql.checkEqual(tdSql.queryResult[0][0],base_data['binary'])
+        elif 'nchar' in column_type.lower():
+            tdSql.checkEqual(tdSql.queryResult[0][0],base_data['nchar'])
+        else:
+            tdSql.checkEqual(tdSql.queryResult[0][0],base_data[column_type])
+    def delete_rows(self,dbname,tbname,col_name,col_type,base_data,row_num,tb_type,tb_num=1):
+        for i in range(row_num):
+            tdSql.execute(f'delete from {tbname} where ts>{self.ts+i}')
+            tdSql.execute(f'flush database {dbname}')
+            tdSql.execute('reset query cache')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(i+1)
+                self.insert_base_data(col_type,tbname,row_num,base_data)
+            elif tb_type == 'stb':
+                tdSql.checkRows((i+1)*tb_num)
+                for j in range(tb_num):
+                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
+        for i in range(row_num):
+            tdSql.execute(f'delete from {tbname} where ts>={self.ts+i}')
+            tdSql.execute(f'flush database {dbname}')
+            tdSql.execute('reset query cache')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(i)
+                self.insert_base_data(col_type,tbname,row_num,base_data)
+            elif tb_type == 'stb':
+                tdSql.checkRows(i*tb_num)
+                for j in range(tb_num):
+                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
+        for i in range(row_num):
+            tdSql.execute(f'delete from {tbname} where ts<={self.ts+i}')
+            tdSql.execute(f'flush database {dbname}')
+            tdSql.execute('reset query cache')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(row_num-i-1)
+                self.insert_base_data(col_type,tbname,row_num,base_data)
+            elif tb_type == 'stb':
+                tdSql.checkRows((row_num-i-1)*tb_num)
+                for j in range(tb_num):
+                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
+        for i in range(row_num):
+            tdSql.execute(f'delete from {tbname} where ts<{self.ts+i}')
+            tdSql.execute(f'flush database {dbname}')
+            tdSql.execute('reset query cache')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(row_num-i)
+                self.insert_base_data(col_type,tbname,row_num,base_data)
+            elif tb_type == 'stb':
+                tdSql.checkRows((row_num-i)*tb_num)
+                for j in range(tb_num):
+                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
+        for i in range(row_num):
+            tdSql.execute(f'delete from {tbname} where ts between {self.ts} and {self.ts+i}')
+            tdSql.execute(f'flush database {dbname}')
+            tdSql.execute('reset query cache')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(row_num - i-1)
+                self.insert_base_data(col_type,tbname,row_num,base_data)
+            elif tb_type == 'stb':
+                tdSql.checkRows(tb_num*(row_num - i-1))
+                for j in range(tb_num):
+                    self.insert_base_data(col_type,f'{tbname}_{j}',row_num,base_data)
+            tdSql.execute(f'delete from {tbname} where ts between {self.ts+i+1} and {self.ts}')
+            tdSql.query(f'select {col_name} from {tbname}')
+            if tb_type == 'ntb' or tb_type == 'ctb':
+                tdSql.checkRows(row_num)
+            elif tb_type == 'stb':
+                tdSql.checkRows(tb_num*row_num)
+    def delete_error(self,tbname,column_name,column_type,base_data):
+        for error_list in ['',f'ts = {self.ts} and',f'ts = {self.ts} or']:
+            if 'binary' in column_type.lower():
+                tdSql.error(f'''delete from {tbname} where {error_list} {column_name} ="{base_data['binary']}"''')
+            elif 'nchar' in column_type.lower():
+                tdSql.error(f'''delete from {tbname} where {error_list} {column_name} ="{base_data['nchar']}"''')
+            else:
+                tdSql.error(f'delete from {tbname} where {error_list} {column_name} = {base_data[column_type]}')
+
+    def delete_data_ntb(self):
+        tdSql.execute(f'create database if not exists {self.dbname}')
+        tdSql.execute(f'use {self.dbname}')
+        for col_name,col_type in self.column_dict.items():
+            tdSql.execute(f'create table {self.ntbname} (ts timestamp,{col_name} {col_type})')
+            self.insert_base_data(col_type,self.ntbname,self.rowNum,self.base_data)
+            self.delete_one_row(self.ntbname,col_type,col_name,self.base_data,self.rowNum,self.dbname,'ntb')
+            self.delete_all_data(self.ntbname,col_type,self.rowNum,self.base_data,self.dbname,'ntb')
+            self.delete_error(self.ntbname,col_name,col_type,self.base_data)
+            self.delete_rows(self.dbname,self.ntbname,col_name,col_type,self.base_data,self.rowNum,'ntb')
+            for func in ['first','last']:
+                tdSql.query(f'select {func}(*) from {self.ntbname}')
+            tdSql.execute(f'drop table {self.ntbname}')
+        tdSql.execute(f'drop database {self.dbname}')
+    def delete_data_ctb(self):
+        tdSql.execute(f'create database if not exists {self.dbname}')
+        tdSql.execute(f'use {self.dbname}')
+        for col_name,col_type in self.column_dict.items():
+            tdSql.execute(f'create table {self.stbname} (ts timestamp,{col_name} {col_type}) tags(t1 int)')
+            for i in range(self.tbnum):
+                tdSql.execute(f'create table {self.stbname}_{i} using {self.stbname} tags(1)')
+                self.insert_base_data(col_type,f'{self.stbname}_{i}',self.rowNum,self.base_data)
+                self.delete_one_row(f'{self.stbname}_{i}',col_type,col_name,self.base_data,self.rowNum,self.dbname,'ctb')
+                self.delete_all_data(f'{self.stbname}_{i}',col_type,self.rowNum,self.base_data,self.dbname,'ctb',i+1,self.stbname)
+                self.delete_error(f'{self.stbname}_{i}',col_name,col_type,self.base_data)
+                self.delete_rows(self.dbname,f'{self.stbname}_{i}',col_name,col_type,self.base_data,self.rowNum,'ctb')
+                for func in ['first','last']:
+                    tdSql.query(f'select {func}(*) from {self.stbname}_{i}')
+            tdSql.execute(f'drop table {self.stbname}')
+    def delete_data_stb(self):
+        tdSql.execute(f'create database if not exists {self.dbname}')
+        tdSql.execute(f'use {self.dbname}')
+        for col_name,col_type in self.column_dict.items():
+            tdSql.execute(f'create table {self.stbname} (ts timestamp,{col_name} {col_type}) tags(t1 int)')
+            for i in range(self.tbnum):
+                tdSql.execute(f'create table {self.stbname}_{i} using {self.stbname} tags(1)')
+                self.insert_base_data(col_type,f'{self.stbname}_{i}',self.rowNum,self.base_data)
+            self.delete_error(self.stbname,col_name,col_type,self.base_data)
+            self.delete_one_row(self.stbname,col_type,col_name,self.base_data,self.rowNum,self.dbname,'stb',self.tbnum)
+            self.delete_all_data(self.stbname,col_type,self.rowNum,self.base_data,self.dbname,'stb',self.tbnum)
+            self.delete_rows(self.dbname,self.stbname,col_name,col_type,self.base_data,self.rowNum,'stb',self.tbnum)
+            for func in ['first','last']:
+                tdSql.query(f'select {func}(*) from {self.stbname}')
+            tdSql.execute(f'drop table {self.stbname}')
+        tdSql.execute(f'drop database {self.dbname}')
+    def run(self):
+        self.delete_data_ntb()
+        self.delete_data_ctb()
+        self.delete_data_stb()
+        tdDnodes.stoptaosd(1)
+        tdDnodes.starttaosd(1)
+        self.delete_data_ntb()
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file