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MySQL Connector/ODBC 8.0.24 has been released
Posted by: Gipson Pulla
Date: April 20, 2021 03:19AM

Dear MySQL users,

MySQL Connector/ODBC 8.0.24 is a new version in the MySQL Connector/ODBC
8.0 series, the ODBC driver for the MySQL Server.

The available downloads include both a Unicode driver and an ANSI driver
based on the same modern codebase. Please select the driver type you
need based on the type of your application - Unicode or ANSI.
Server-side prepared statements are enabled by default. It is suitable
for use with the latest MySQL server version 8.0.

This release of the MySQL ODBC driver is conforming to the ODBC 3.8
specification. It contains implementations of key 3.8 features,
including self-identification as a ODBC 3.8 driver, streaming of out (for
binary types only), and support of the SQL_ATTR_RESET_CONNECTION
connection attribute (for the Unicode driver only).

The release is now available in source and binary form for a number of
platforms from our download pages at

  https://dev.mysql.com/downloads/connector/odbc/

For information on installing, please see the documentation at

  https://dev.mysql.com/doc/connector-odbc/en/connector-odbc-installation.html

Enjoy and thanks for your support!


Changes in MySQL Connector/ODBC 8.0.24 (2021-04-20, General Availability)

Functionality Added or Changed


     * Previously, if the connection to the server was not used
       within the period specified by the wait_timeout system
       variable and the server closed the connection, the client
       received no notification of the reason. Typically, the
       client would see Lost connection to MySQL server during
       query (CR_SERVER_LOST) or MySQL server has gone away
       (CR_SERVER_GONE_ERROR).
       In such cases, the server now writes the reason to the
       connection before closing it, and the client receives a
       more informative error message: The client was
       disconnected by the server because of inactivity. See
       wait_timeout and interactive_timeout for configuring this
       behavior. (ER_CLIENT_INTERACTION_TIMEOUT).
       The previous behavior still applies for client
       connections to older servers and connections to the
       server by older clients.

     * If a classic MySQL protocol connection experiences a
       server timeout, Connector/ODBC now reports more precise
       disconnection information from the server.

Bugs Fixed


     * The ODBC SQLProcedureColumns function returns incomplete
       results, fetches after usage would only return the first
       40 parameters.
       The workaround was to increase the group_concat_max_len
       size, for example 'group-concat-max-len = 1000000' under
       [mysqld]. (Bug #32504915, Bug #102589)

     * MySQL 8.0.24 added a new ER_CLIENT_INTERACTION_TIMEOUT
       error code, and it caused the ODBC driver to report the
       wrong SQLSTATE HY000 instead of 08S01 after the
       connection is terminated on the server by
       wait_/_interactive timeout. The ODBC driver is now linked
       against libmysqlclient 8.0.24 to handle this situation.
       (Bug #32394545)

On Behalf of Oracle/MySQL Engineering Team,
Gipson Pulla

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