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92 lines
3.0 KiB
Python
92 lines
3.0 KiB
Python
# datetime.py - example of using date and time types
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#
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# Copyright (C) 2001-2004 Federico Di Gregorio <fog@debian.org>
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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 the
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# Free Software Foundation; either version 2, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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## put in DSN your DSN string
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DSN = 'dbname=test'
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## don't modify anything below tis line (except for experimenting)
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import sys, psycopg
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import mx.DateTime
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import datetime
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if len(sys.argv) > 1:
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DSN = sys.argv[1]
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print "Opening connection using dns:", DSN
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conn = psycopg.connect(DSN)
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curs = conn.cursor()
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try:
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curs.execute("""CREATE TABLE test_dt (k int4, d date, t time, dt timestamp,
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z interval)""")
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except:
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conn.rollback()
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curs.execute("DROP TABLE test_dt")
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curs.execute("""CREATE TABLE test_dt (k int4,
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d date, t time, dt timestamp,
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z interval)""")
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conn.commit()
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# build and insert some data using mx.DateTime
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mx1 = (
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1,
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mx.DateTime.Date(2004, 10, 19),
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mx.DateTime.Time(0, 11, 17.015),
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mx.DateTime.Timestamp(2004, 10, 19, 0, 11, 17.5),
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mx.DateTime.DateTimeDelta(13, 15, 17, 59.9))
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print "Inserting mx.DateTime values..."
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curs.execute("INSERT INTO test_dt VALUES (%s, %s, %s, %s, %s)", mx1)
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# build and insert some values using the datetime adapters
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dt1 = (
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2,
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datetime.date(2004, 10, 19),
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datetime.time(0, 11, 17, 15000),
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datetime.datetime(2004, 10, 19, 0, 11, 17, 500000),
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datetime.timedelta(13, 15*3600+17*60+59, 900000))
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print "Inserting Python datetime values..."
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curs.execute("INSERT INTO test_dt VALUES (%s, %s, %s, %s, %s)", dt1)
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# now extract the row from database and print them
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print "Extracting values inserted with mx.DateTime wrappers:"
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curs.execute("SELECT d, t, dt, z FROM test_dt WHERE k = 1")
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for n, x in zip(mx1[1:], curs.fetchone()):
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try:
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# this will work only is psycopg has been compiled with datetime
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# as the default typecaster for date/time values
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s = repr(n) + "\n -> " + repr(x) + "\n -> " + x.isoformat()
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except:
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s = repr(n) + "\n -> " + repr(x) + "\n -> " + str(x)
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print s
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print
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print "Extracting values inserted with Python datetime wrappers:"
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curs.execute("SELECT d, t, dt, z FROM test_dt WHERE k = 2")
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for n, x in zip(dt1[1:], curs.fetchone()):
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try:
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# this will work only is psycopg has been compiled with datetime
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# as the default typecaster for date/time values
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s = repr(n) + "\n -> " + repr(x) + "\n -> " + x.isoformat()
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except:
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s = repr(n) + "\n -> " + repr(x) + "\n -> " + str(x)
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print s
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print
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curs.execute("DROP TABLE test_dt")
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conn.commit()
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