FW: OCBC connection

M.-A. Lemburg mal at egenix.com
Fri Sep 28 19:37:29 CEST 2007


On 2007-09-28 19:22, Sugrue, Sean wrote:
> Is this the right email list to be on for asking rather elementary
> python questions?
> If not do you have a suggestion

It's the right place, indeed :-)

Here's an example using mxODBC:

# mxODBC is available from http://www.egenix.com/products/python/mxODBC/:

# On Windows:
from mx.ODBC import Windows as Database

# On Mac OS X:
from mx.ODBC import iODBC as Database

# On Linux/BSD/etc.:
from mx.ODBC import unixODBC as Database
# or
from mx.ODBC import iODBC as Database

# Open a connection to the database
connection = Database.DriverConnect('DSN=<datasourcename>;'
                                    'UID=<username>;'
                                    'PWD=<password>;'
                                    'KEYWORD=<value>')
# replace the values accordingly, add new keyword-value pairs as
# necessary for your data source; data sources are configured
# in the ODBC manager

# Create a cursor; this is used to execute commands
cursor = connection.cursor()

# Create a table
cursor.execute('CREATE TABLE mxodbcexample1 '
               ' (id integer, name varchar(10), data varchar(254))')
# this command does not create a result set, so there's nothing
# to fetch from the database; however in order to make the
# change permanent, we need to commit the change
connection.commit()

# Prepare some data rows to add to the table, ie. a list of tuples
rows = []
for i in range(42):
    name = 'name-%i' % i
    data = 'value-%i' % i
    rows.append((i, name, data))

# Add the data in one go; the values from the tuples get assigned
# to the ?-mark parameter markers in the SQL statement based on
# their position and the SQL statement is executed once for
# each tuple in the list of rows
cursor.executemany('INSERT INTO mxodbcexample1 VALUES (?,?,?)',
                   rows)

# If you apply changes to the database, be sure to commit or
# rollback your changes; a call to .commit() or .rollback()
# will implicitly start a new transaction
connection.commit()

# Now fetch some data rows
from_id = 40
to_id = 42
cursor.execute('SELECT * FROM mxodbcexample1'
               ' WHERE (id >= ?) and (id < ?)',
               (from_id, to_id))

# Fetch the results
for i, row in enumerate(cursor.fetchall()):
    print 'Row %i: %r' % (i, row)

# Remove the table again
cursor.execute('DROP TABLE mxodbcexample1')
connection.commit()

# Close the connection
connection.close()

Regards,
-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Source  (#1, Sep 28 2007)
>>> Python/Zope Consulting and Support ...        http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ...             http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
________________________________________________________________________

:::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! ::::


   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611


> Sean 
> 
> -----Original Message-----
> From: python-list-bounces+sean.sugrue=analog.com at python.org
> [mailto:python-list-bounces+sean.sugrue=analog.com at python.org] On Behalf
> Of Sugrue, Sean
> Sent: Friday, September 28, 2007 10:58 AM
> To: python-list at python.org
> Subject: OCBC connection
> 
> I'm trying to make an odbc connection to postgresql which is on a server
> using python.
> Does anyone have a code snippet to make a basic connection with a select
> query?
> 
> Sean
> --
> http://mail.python.org/mailman/listinfo/python-list




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