pyodbc Changelog
What's new in pyodbc 3.0.6
Jun 25, 2013- Added Cursor.commit() and Cursor.rollback(). It is now possible to use only a cursor in your code instead of keeping track of a connection and a cursor.
- Added readonly keyword to connect. If set to True, SQLSetConnectAttr SQL_ATTR_ACCESS_MODE is set to SQL_MODE_READ_ONLY. This may provide better locking semantics or speed for some drivers.
- Fixed an error reading SQL Server XML data types longer than 4K.