61 lines
1.6 KiB
Python
Executable File
61 lines
1.6 KiB
Python
Executable File
###################################################################
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# Copyright (c) 2016 by TAOS Technologies, Inc.
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# All rights reserved.
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#
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# This file is proprietary and confidential to TAOS Technologies.
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# No part of this file may be reproduced, stored, transmitted,
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# disclosed or used in any form or by any means other than as
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# expressly provided by the written permission from Jianhui Tao
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#
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###################################################################
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# -*- coding: utf-8 -*-
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import sys
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import taos
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import time
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from datetime import datetime
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class QueryMetaData:
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def __init__(self):
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self.host = "127.0.0.1"
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self.user = "root"
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self.password = "taosdata"
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self.config = "/etc/taos"
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def connectDB(self):
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self.conn = taos.connect(
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self.host,
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self.user,
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self.password,
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self.config)
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self.cursor = self.conn.cursor()
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def queryData(self):
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print("===============query tag data===============")
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self.cursor.execute("use test")
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startTime = datetime.now()
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self.cursor.execute("select areaid from meters")
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data = self.cursor.fetchall()
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endTime = datetime.now()
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print(endTime - startTime)
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start = datetime.now()
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self.cursor.execute("select areaid, loc from meters")
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data2 = self.cursor.fetchall()
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end = datetime.now()
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print(end - start)
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def closeConn(self):
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self.cursor.close()
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self.conn.close()
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test = QueryMetaData()
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test.connectDB()
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test.queryData()
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test.closeConn()
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