select_last_crash.py

###################################################################
#           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 taos
from util.log import *
from util.cases import *
from util.sql import *


class TDTestCase:
    def init(self, conn, logSql):
        tdLog.debug("start to execute %s" % __file__)
        tdSql.init(conn.cursor())

        
        self.rowNum = 5000
        self.ts = 1537146000000

    def run(self):
        tdSql.prepare()

        tdSql.execute(
            "create table if not exists st (ts timestamp, value nchar(50), speed int) tags(dev nchar(50))")
        tdSql.execute(
            "create table t1 using st tags('dev_001')")

        for i in range(self.rowNum):
            tdSql.execute("insert into t1 values(%d, 'taosdata%d', %d)" % (self.ts + i, i + 1, i + 1))

        tdSql.query("select last(*) from st")
        tdSql.checkRows(1)
        
    def stop(self):
        tdSql.close()
        tdLog.success("%s successfully executed" % __file__)


tdCases.addWindows(__file__, TDTestCase())
tdCases.addLinux(__file__, TDTestCase())