mirror of
https://github.com/taosdata/TDengine
synced 2026-05-24 10:09:01 +00:00
72 lines
No EOL
2.3 KiB
Python
72 lines
No EOL
2.3 KiB
Python
###################################################################
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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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from util.log import *
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from util.cases import *
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from util.sql import *
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from util.dnodes import *
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import multiprocessing as mp
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class TDTestCase:
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def init(self, conn, logSql):
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tdLog.debug("start to execute %s" % __file__)
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tdSql.init(conn.cursor())
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self.ts = 1609430400000
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def alterTableSchema(self):
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conn1 = taos.connect(host="127.0.0.1", user="root", password="taosdata", config=tdDnodes.getSimCfgPath())
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c1 = conn1.cursor()
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c1.execute("use db")
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c1.execute("alter table st drop column c2")
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c1.execute("alter table st add column c2 double")
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tdLog.sleep(1)
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c1.execute("select * from st")
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for data in c1:
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print("Process 1: c2 = %s" % data[2])
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def insertData(self):
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conn2 = taos.connect(host="127.0.0.1", user="root", password="taosdata", config=tdDnodes.getSimCfgPath())
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c2 = conn2.cursor()
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tdLog.sleep(1)
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c2.execute("use db")
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c2.execute("insert into t1 values(%d, 2, 2.22)" % (self.ts + 1))
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c2.execute("select * from st")
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for data in c2:
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print("Process 2: c2 = %f" % data[2])
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def run(self):
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tdSql.prepare()
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tdSql.execute("create table st(ts timestamp, c1 int, c2 float) tags(t1 int)")
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tdSql.execute("create table t1 using st tags(1)")
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tdSql.execute("insert into t1 values(%d, 1, 1.11)" % self.ts)
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p1 = mp.Process(target=self.alterTableSchema, args=())
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p2 = mp.Process(target=self.insertData, args=())
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p1.start()
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p2.start()
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p1.join()
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p2.join()
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def stop(self):
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tdSql.close()
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tdLog.success("%s successfully executed" % __file__)
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tdCases.addWindows(__file__, TDTestCase())
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tdCases.addLinux(__file__, TDTestCase()) |