There are currently two version of Connector/ODBC available:
Connector/ODBC 5.1, currently in GA status, is a partial rewrite of the of the 3.51 code base and is designed to work with all versions of MySQL from 4.1.1. It does not work with versions of MySQL Server prior to 4.1.1.
Connector/ODBC 5.1 also includes the following changes and improvements over the 3.51 release:
Improved support on Windows 64-bit platforms.
Full Unicode support at the driver level. This includes
support for the
SQL_WCHAR datatype, and
support for Unicode login, password and DSN
configurations. For more information,. see
Knowledgebase Article #716246.
Support for the
datatype, which provides easier access to the precise
definition of numeric values. For more information, see
Knowledgebase Article #714556
Native Windows setup library. This replaces the Qt library based interface for configuring DSN information within the ODBC Data Sources application.
Support for the ODBC descriptor, which improves the handling and metadata of columns and parameter data. For more information, see Microsoft Knowledgebase Article #716339.
Connector/ODBC 3.51 is the current release of the 32-bit ODBC driver, also known as the MySQL ODBC 3.51 driver. Connector/ODBC 3.51 has support for ODBC 3.5x specification level 1 (complete core API + level 2 features) in order to continue to provide all functionality of ODBC for accessing MySQL.
The manual for versions of Connector/ODBC older than 3.51 can be located in the corresponding binary or source distribution. Please note that versions of Connector/ODBC earlier than the 3.51 revision were not fully compliant with the ODBC specification.
From this section onward, the primary focus of this guide is the Connector/ODBC 3.51 and Connector/ODBC 5.1 drivers.
Version numbers for MySQL products are formatted as X.X.X. However, Windows tools (Control Panel, properties display) may show the version numbers as XX.XX.XX. For example, the official MySQL formatted version number 5.0.9 may be displayed by Windows tools as 5.00.09. The two versions are the same; only the number display format is different.