120 lines
3.7 KiB
Python
120 lines
3.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# MySQL Connector/Python - MySQL driver written in Python.
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# Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
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# MySQL Connector/Python is licensed under the terms of the GPLv2
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# <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
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# MySQL Connectors. There are special exceptions to the terms and
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# conditions of the GPLv2 as it is applied to this software, see the
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# FOSS License Exception
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# <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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Example using MySQL Connector/Python showing:
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* How to save timestamps including microseconds
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* Check the MySQL server version
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NOTE: This only works with MySQL 5.6.4 or greater. This example will work
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with earlier versions, but the microseconds information will be lost.
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Story: We keep track of swimmers in a freestyle 4x 100m relay swimming event
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with millisecond precision.
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"""
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from datetime import time, datetime
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import mysql.connector
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CREATE_TABLE = (
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"CREATE TABLE relay_laps ("
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"teamid TINYINT UNSIGNED NOT NULL, "
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"swimmer TINYINT UNSIGNED NOT NULL, "
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"lap TIME(3), "
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"start_shot DATETIME(6), "
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"PRIMARY KEY (teamid, swimmer)"
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") ENGINE=InnoDB"
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)
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def main(config):
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output = []
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cnx = mysql.connector.Connect(**config)
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if cnx.get_server_version() < (5,6,4):
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output.append(
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"MySQL {0} does not support fractional precision"\
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" for timestamps.".format(cnx.get_server_info()))
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return output
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cursor = cnx.cursor()
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try:
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cursor.execute("DROP TABLE IF EXISTS relay_laps")
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except:
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# Ignoring the fact that it was not there
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pass
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cursor.execute(CREATE_TABLE)
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teams = {}
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teams[1] = [
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(1, time(second=47, microsecond=510000),
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datetime(2009, 6, 7, 9, 15, 2, 234)),
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(2, time(second=47, microsecond=20000),
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datetime(2009, 6, 7, 9, 30, 5, 102345)),
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(3, time(second=47, microsecond=650000),
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datetime(2009, 6, 7, 9, 50, 23, 2300)),
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(4, time(second=46, microsecond=60000),
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datetime(2009, 6, 7, 10, 30, 56, 1)),
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]
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insert = ("INSERT INTO relay_laps (teamid, swimmer, lap, start_shot) "
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"VALUES (%s, %s, %s, %s)")
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for team, swimmers in teams.items():
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for swimmer in swimmers:
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cursor.execute(insert, (team, swimmer[0], swimmer[1], swimmer[2]))
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cnx.commit()
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cursor.execute("SELECT * FROM relay_laps")
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for row in cursor:
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output.append("{0: 2d} | {1: 2d} | {2} | {3}".format(*row))
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try:
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cursor.execute("DROP TABLE IF EXISTS relay_lapss")
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except:
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# Ignoring the fact that it was not there
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pass
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cursor.close()
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cnx.close()
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return output
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if __name__ == '__main__':
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config = {
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'host': 'localhost',
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'port': 3306,
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'database': 'test',
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'user': 'root',
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'password': '',
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'charset': 'utf8',
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'use_unicode': True,
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'get_warnings': True,
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}
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out = main(config)
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print('\n'.join(out))
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