[DB-SIG] ANN: eGenix mxODBC 3.3.3 - Python ODBC Database Interface

eGenix Team: M.-A. Lemburg info at egenix.com
Thu Jun 25 10:12:51 CEST 2015



                         eGenix.com mxODBC

                   Python ODBC Database Interface

                           Version 3.3.3

    mxODBC is our commercially supported Python extension providing
         ODBC database connectivity to Python applications
            on Windows, Mac OS X, Unix and BSD platforms
           with many advanced Python DB-API extensions and
                 full support of stored procedures

This announcement is also available on our web-site for online reading:



mxODBC provides an easy-to-use, high-performance, reliable and robust
Python interface to ODBC compatible databases such as MS SQL Server,
Oracle Database, IBM DB2, Informix and Netezza, SAP Sybase ASE and
Sybase Anywhere, Teradata, MySQL, MariaDB, PostgreSQL, SAP MaxDB and
many more:


The "eGenix mxODBC - Python ODBC Database Interface" product is a
commercial extension to our open-source eGenix mx Base Distribution:




The 3.3.3 release of our mxODBC is a patch level release of our
popular Python ODBC Interface for Windows, Linux, Mac OS X and
FreeBSD. It includes these enhancements and fixes:

Driver Compatibility

MS SQL Server

 MS SQL Server Native Client

 * Added a fix for the MS SQL Server Native Client error
   "[Microsoft][ODBC Driver 11 for SQL Server][SQL Server]The data
   types varchar and text are incompatible in the equal to operator."
   when trying to bind a string of more than 256 bytes to a *VARCHAR*
   column while using cursor.executedirect(). cursor.execute() was
   unaffected by this. Thanks to Paul Perez for reporting this.

 * Added a note to *avoid using "execute "* when calling stored
   procedures with MS SQL Server. This can result in '[Microsoft][SQL
   Native Client]Invalid Descriptor Index' errors. Simply dropping the
   "execute " will have the error go away.

 FreeTDS ODBC Driver

 * Added a work-around to address the FreeTDS driver error
   '[FreeTDS][SQL Server]The data types varbinary and image are
   incompatible in the equal to operator.' when trying to bind binary
   strings longer than 256 bytes to a *VARBINARY* column. This problem
   does not occur with the MS SQL Server Native Client.

 * Reenabled returning *cursor.rowcount* for FreeTDS >= 0.91. In
   previous versions, FreeTDS could return wrong data for .rowcount
   when using SELECTs.This should make *SQLAlchemy* users happy again.

 * Add work-around to have FreeTDS ODBC driver accept *binary data* in
   strings as input for VARBINARY columns. A side effect of this is
   that FreeTDS will now also accept binary data in VARCHAR columns.

SAP Sybase ASE

 * Added work-arounds and improvements for Sybase ASE ODBC drivers to
   enable working with *BINARY* and *VARBINARY* columns.

 * Added a work-around for a *cursor.rowcount* problem with Sybase ASE's
   ODBC driver on 64-bit platforms. It sometimes returns 4294967295
   instead of -1.

 * Added note about random segfault problems with the
   *Sybase ASE 15.7 ODBC driver* on Windows. Unfortunately, there's
   nothing much we can do about this, other than recommend using the
   Sybase ASE 15.5 ODBC driver version which does not have these
   stability problems.


 * Added improved documentation on the *direct execution model*
   available in mxODBC. This can help in more complex parameter
   binding situations and also provides performance boosts for a few
   databases, including e.g. MS SQL Server.

 * Improved tests and added more data binding tests, esp. for SELECT
   queries with bound parameters.

 * Fixed some minor issues with the *package web installer* related to
   Linux2 vs. Linux3, FreeBSD installations and an intermittent error
   related to hash seeds, which sometimes caused prebuilt archives to
   not install correctly.

For the full set of changes please check the mxODBC change log:




mxODBC 3.3 was released on 2014-04-08. Please see the full
announcement for highlights of the 3.3 release:


For the full set of features mxODBC has to offer, please see:




mxODBC is available in these two editions:

 * The Professional Edition, which gives full access to all mxODBC features.

 * The Product Development Edition, which allows including mxODBC in
   applications you develop.

For a complete overview of the available editions, please see the
product page:




The download archives and instructions for installing the package can
be found at:


In order to use the eGenix mxODBC package you will first need to
install the eGenix mx Base package:


You can also simply use:

    pip install egenix-mxodbc

and then get evaluation licenses from our website to try mxODBC:




Users are encouraged to upgrade to this latest mxODBC release to
benefit from the new features and updated ODBC driver support.

We have taken special care not to introduce backwards incompatible
changes, making the upgrade experience as smooth as possible.

Customers who have purchased mxODBC 3.3 licenses can continue to use
their licenses with this patch level release.

For upgrade purchases, we will give out 20% discount coupons going
from mxODBC 2.x to 3.3 and 50% coupons for upgrades from mxODBC 3.x to
3.3. Please contact the eGenix.com Sales Team with your existing
license serials for details for an upgrade discount coupon.

If you want to try the new release before purchase, you can request
30-day evaluation licenses by visiting our web-site


or writing to sales at egenix.com, stating your name (or the name of the
company) and the number of eval licenses that you need.



Commercial support for this product is available from eGenix.com.
Please see


for details about our support offerings.



About Python (http://www.python.org/):

    Python is an object-oriented Open Source programming language
    which runs on all modern platforms. By integrating ease-of-use,
    clarity in coding, enterprise application connectivity and rapid
    application design, Python establishes an ideal programming
    platform for today's IT challenges.

About eGenix (http://www.egenix.com/):

    eGenix is a software project, consulting and product company
    focusing on expert services and professional quality products for
    companies, Python users and developers.

Marc-Andre Lemburg

Professional Python Services directly from the Source  (#1, Jun 25 2015)
>>> Python Projects, Coaching and Consulting ...  http://www.egenix.com/
>>> mxODBC Plone/Zope Database Adapter ...       http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
2015-06-16: Released eGenix pyOpenSSL 0.13.10 ... http://egenix.com/go78
2015-07-20: EuroPython 2015, Bilbao, Spain ...             25 days to go
2015-07-29: Python Meeting Duesseldorf ...                 34 days to go

   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

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