queryInterval.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 tdLog
from util.cases import tdCases
from util.sql import tdSql


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

        self.ts = 1538548685000

    def run(self):
        tdSql.prepare()

        tdSql.execute("create table st (ts timestamp, voltage int) tags (loc nchar(30))")
        tdSql.execute("insert into t0 using st tags('beijing') values(now, 220) (now - 15d, 221) (now - 30d, 225) (now - 35d, 228) (now - 45d, 222)")
        tdSql.execute("insert into t1 using st tags('shanghai') values(now, 220) (now - 60d, 221) (now - 50d, 225) (now - 40d, 228) (now - 20d, 222)")

        tdSql.query("select avg(voltage) from st interval(1n)")
        tdSql.checkRows(3)
        tdSql.checkData(0, 1, 223.0)
        tdSql.checkData(1, 1, 225.0)
        tdSql.checkData(2, 1, 220.333333)
        
        tdSql.query("select avg(voltage) from st interval(1n, 15d)")
        tdSql.checkRows(3)
        tdSql.checkData(0, 1, 224.8)
        tdSql.checkData(1, 1, 222.666666)
        tdSql.checkData(2, 1, 220.0)

        tdSql.query("select avg(voltage) from st interval(1n, 15d) group by loc")
        tdSql.checkRows(6)
        tdSql.checkData(0, 1, 225.0)
        tdSql.checkData(1, 1, 223.0)
        tdSql.checkData(2, 1, 220.0)
        tdSql.checkData(3, 1, 224.666666)
        tdSql.checkData(4, 1, 222.0)
        tdSql.checkData(5, 1, 220.0)

    def stop(self):
        tdSql.close()
        tdLog.success("%s successfully executed" % __file__)


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