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Release date: 12 Nov 2024

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

MariaDB Connector/C 3.3.12 was not released separately but is included in MariaDB Community Server 10.6.20, 10.11.10, and 11.2.6. MariaDB Connector/C 3.3.13 includes additional bug fixes for the Connector.

Notable changes

• Added TLSv1.3 support for Schannel (Windows)

• Added new option -DWITH_BOOST_CONTEXT. CMake option -DWITH_BOOST_CONTEXT=ON adds boost::context as a dependency of libmariadb to provide a fallback on non-natively supported architectures. boost::context is preferred over ucontext when both are available.

Issues fixed:

• Fixed possible crash if not default plugin was loaded.

• : Undefined behavior in the reference ed25519 implementation

• : Fixed error "SEC_E_ALGORITHM_MISMATCH" connecting Windows client to Ubuntu

• : A reconnect doesn't do node failover when using a connection string with multiple hosts

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Download Release Notes Changelog

Release date: 11 Feb 2025

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Notable changes

• Added support for setting zstd compression level via mysql_optionsv parameter MYSQL_OPT_ZSTD_COMPRESSION_LEVEL.

Issues fixed:

• : Fix SSL_read/write return value checking in ma_tls_async_check_result (Kudos to Joshua Hunt for contributing this fix)

• : First query fails after reconnect

• : Ubsan and Asan fixes

• : Fix crash when sending NULL_LENGTH in field description

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Release date: 20 Aug 2024

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 9 Apr 2025

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 21 Nov 2025

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 21 Aug 2025

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 11 Feb 2025

This is a release of MariaDBConnector/C, formerly known as MariaDB Client Library for C.

Release date: 21 Aug 2025

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 9 Apr 2025

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 12 Nov 2024

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

MariaDB Connector/C 3.4.2 was not released separately but is included in . MariaDB Connector/C 3.4.3 includes additional bug fixes for the Connector and is included in , and .

Release date: 24 June 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Download Release Notes Changelog

Release date: 22 May 2023

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Notable changes

• Updated bundled zlib library (version 1.2.13)

• : Added support for all binary log events (replication/binlog API).

• : Support of semi-sync replication

• : Build named pipe plugin as built-in plugin (Windows)

Issues fixed:

• : Checksum verification (replication/binlog API).

• : Fixed NULL pointer dereference in unpack_fields().

• : Clear server status and remove pending result sets in mysql_reset_connection().

• : If prepare step failed in mariadb_stmt_execute_direct now both mysql_stmt_error and mysql_error return the error message from prepare step instead of error message of execute.

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

MariaDB Connector/C 3.2 is the current major development version. MariaDB Connector/C 3.1 is stable and feature-complete, so major new features to be developed are going into 3.2.

• View the source tree

New Features

• : Do not resend prepared statement metadata unnecessarily

• : Added support for passwords > 255 characters

• LOAD DATA LOCAL is now supported in binary protocol

• Updated/extended cipher suite list for Schannel TLS module

• : Added support for certificate revocation list in GnuTLS module

• : Changed default character set from latin1 to utf8mb4

• : Added support for non blocking calls using binary protocol

• : mysql_get_client_* api functions now return Connector version

Notable changes:

• The connection plugin "aurora" was removed

• Default character set is now utf8mb4

• Character set utf8 will be mapped to utf8mb3

• Added support for MSVC asan

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 10 Nov 2021

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

• : If a stored procedure was executed as server side cursor and server doesn't set the SERVER_STATUS_CURSOR_EXISTS status flag, the result set will not be processed as a server side cursor.

• : If mariadb_stmt_execute_direct fails, the number of parameters (obtained by response packet of mysql_stmt_prepare) will be set back to the number of prebinded parameters to avoid memory overrun.

• : The API function mysql_load_plugin_v() now returns the plugin handle (instead of raising an error and returning a NULL handle) even if the plugin was already loaded. This will avoid possible race conditions, when one thread is loading the plugin while another thread waits for the lock to load the same plugin.

• Xcode compatibility update (Thanks to Sergei Krivonos for his contribution)

• : Removed callback function for crypto threads, since the callback function cannot be cleared (this affects OpenSSL <= 1.0.2 only)

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Download Release Notes Changelog

Release date: 7 Feb 2023

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Issues fixed:

• : Don't substitute parameters in server error message

• : Fix memory leak in prepared statements if realloc failed

• : Fixed error numbers

• : Check error code ranges and provide support for variadic arguments in prepared statement errors.

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 18 Jun 2024

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Issues fixed:

• : Replace COM_PROCESS_KILL by SQL kill command

• : memory leak fixed in get_default_configuration_dirs()

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 11 Feb 2025

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Issues fixed:

• : Fix SSL_read/write return value checking in ma_tls_async_check_result (Kudos to Joshua Hunt for contributing this fix)

• : First query fails after reconnect

• : Fix crash when sending NULL_LENGTH in field description

• : Fix possible buffer overflow in ma_read_ok_packet

• : prepared statement support AUTO_SEC_PART_DIGITS

• : Added support for TLSv1.3 ciphers (GnuTLS)

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Download Release Notes Changelog

Release date: 25 May 2022

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Notable changes

• Updated bundled zlib (Version 1.2.12)

• : License header fixes

• : Save proxy settings on reconnect

• Android build fix

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Release date: 29 Nov 2023

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 15 Feb 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 14 Sep 2023

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 7 Nov 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 17 September 2020

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

Release date: 25 May 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 9 Aug 2021

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 25 May 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 8 Apr 2019

This is an release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

New Features

Release date: 1 Sep 2023

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Issues fixed:

Release date: 4 Dec 2017

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug Fixes

Release date: 11 Aug 2021

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 7 Jul 2021

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 11 May 2021

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

Release date: 29 Jun 2021

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

In addition to various minor bug fixes, in this release we have updated the minor version number (skipped over 3.2.1

Release date: 22 May 2023

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Updated bundled zlib library (version 1.2.13)

Release date: 2 Aug 2018

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

Release date: 15 Feb 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 18 Jan 2018

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug Fixes

Release date: 15 Feb 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

Release date: 6 Jun 2019

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Bug fixes

Release date: 7 Nov 2022

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: This version was never released

Download Release Notes Changelog

Release date: 20 Aug 2024

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Issues fixed:

• : parse_connection_string ignores empty string in last parameter

• : Replace COM_PROCESS_KILL by KILL command

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 7 Feb 2023

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

mysql_get_client_info()/mysql_get_client_version() now return the Connector/C specific version (instead of corresponding server version),

Issues fixed:

• : Don't substitute parameters in server error message

• : Fix memory leak in prepared statements if realloc failed

• : Fixed error numbers

• : Check error code ranges and provide support for variadic arguments in prepared statement errors.

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 4 Nov 2020

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

• : Added support for passwords > 255 characters

• : Added support for TLS v1.3 cipher suites (OpenSSL only)

• : Removed unused command COM_MULTI

• If character set "auto" was specified on Windows, and GetConsoleCP returns a positive number, Ansi code page identifier (GetACP) will be used

• Updated bundled zlib (now version 1.2.11)

Bugs Fixed

• : MSAN use-of-uninitialized-value in strstr()

• : truncation check for float values fails on i386 due to Intel FPU optimization bug in gcc

• : Fix crash when loading plugins in mysql_server_init()

• : Fixed race condition in ma_net_init (Kudos to Alexander Sapin)

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 29 Nov 2023

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Issues fixed:

• : Fix memory allocation issue with prepared statement reexecution.

• : Win32 build fix

• : Cache bcrypt algorithm providers (Windows)

• : Initialize time struct in pvio_socket_set_timeout

• : Avoid false positive gcc warning

• Remove WORDS_BIGENDIAN

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 25 Apr 2018

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Features

• Added option MYSQL_OPT_CAN_HANDLE_EXPIRED_PASSWORDS for mysql_options()/mysql_optionsv():If this option is set, client indicates that it will be able to handle expired passwords by setting the CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS capability flag. If password is expired and CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS is set, the server will not return an error when connecting, but will put the connection in sandbox mode, where all commands will return error 1820/1828 (ER_MUST_CHANGE_PASSWORD/ER_MUST_CHANGE_PASSWORD_LOGIN) unless a new password was set.

• New plugin configuration interface: The default configuration for a specific plugin can be specified via cmake parameter -DCLIENT_PLUGIN_${PLUGIN}=[DYNAMIC|STATIC|OFF].

• Added support for linux abstract socket (). Thanks to Daniel Black for his contribution.

• Added Travis and Appveyor build support

• : Added asynchronous/non-blocking support for OpenSSL and GnuTLS

Notable Bug fixes

• Fixed various clang compiler warnings

• : Access violation in mysql_close when using a connection plugin.

• : If built dynamically the old_password plugin could not be located due to wrong filename (must be mysql_old_password.so instead of old_password.so).

• : If no default client character set was specified, the utf8 character set will be used by default (instead of setting the client character set to server character set)

For a list of changes made in this release, with links to detailed information on each push, see the .

Download Release Notes Changelog

Release date: 22 Aug 2022

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Notable changes

• : Callback support for status and session_tracking

Bugs fixed

• : Ignore unknown events in replication/binlog API

• : Fixed build for MacOS when using bundled zlib library.

• : Fixed memory leak in non-blocking API. Kudos to Hyung Hwan who found this issue and provided a fix.

• : Fixed error handling in TLS read/write

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 10 Nov 2021

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

• : If a stored procedure was executed as server side cursor and server doesn't set the SERVER_STATUS_CURSOR_EXISTS status flag, the result set will not be processed as a server side cursor.

• : If mariadb_stmt_execute_direct fails, the number of parameters (obtained by response packet of mysql_stmt_prepare) will be set back to the number of prebinded parameters to avoid memory overrun.

• : The API function mysql_load_plugin_v() now returns the plugin handle (instead of raising an error and returning a NULL handle) even if the plugin was already loaded. This will avoid possible race conditions, when one thread is loading the plugin while another thread waits for the lock to load the same plugin.

• Xcode compatibility update (Thanks to Sergei Krivonos for his contribution)

• : Removed callback function for crypto threads, since the callback function cannot be cleared (this affects OpenSSL <= 1.0.2 only)

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 1 Aug 2019

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Bug fixes

• : Fix CMake warnings

• : heap-use-after-free in client_mpvio_read_packet

• : Fix GnuTLS error with TLSv1.3

• : Ignore SERVER_STATUS_CURSOR_EXISTS if client didn't open a cursor before

• : Fixed crash in GnuTLS when key and certificate are in the same file

• : Don't allow invalid characters in plugin names

• : Fixed Location of PLUGINDIR if Connector/C is a subproject

• Fixes for the following :

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesAbout MariaDB Connector/C

Release date: 20 Jan 2016

This is an Alpha release of MariaDB Connector/C, formerly known as the MariaDB Client Library for C. As with any other pre-production release, cautions should be taken when installing on production systems or systems with critical data. Not all of the features, planned for the final MariaDB Connector/C 3.0 release are implemented yet.

For a description of this library see the page.

Download

Binary packages for Windows (32 and 64-bit) and generic Linux packages as well as source code packages are available from the

New features

SSL

• In addition to OpenSSL the following SSL libraries are supported in Connector/C 3.0:

  • GnuTLS

  • Windows Schannel. SChannel requires no other external libraries besides the Windows system libraries, and is the default for SSL Support on Windows operating systems.

• Support of the TLSv1.1 and TLSv1.2 protocols.

Plugins

All plugins can either be linked statically or built as shared objects (or dynamic link libraries on Windows)

• pluggable Virtual IO (PVIO) for communication via socket, named pipe and shared memory

• connection plugins, e.g for aurora failover or replication (master write, slave read)

• remote IO plugin, which allows to access remote files (via http, https, ftp, ldap, ..)

• Trace plugin (for analyzing and dumping network traffic)

New API functions

• mariadb_get_info and mariadb_get_infov (variable argument list) for obtaining general and connection specific values.

• mariadb_get_charset_by_name and mariadb_get_charset_by_nr which return charset information for a given internal number or name of character set. These functions have been previously used internally by MariaDB Connector/ODBC and are now exported, so they can be used also within plugins.

• mysql_get_option and mysql_get_optionv (variable argument list) for obtaining option values for a given connection.

• mysql_reconnect which was used internally before (if the option MYSQL_OPT_RECONNECT was set) is now part of the API and can be used by applications and plugins to reestablish a failing connection

We will cover new functionality in detail with a couple of blog entries during the next days. The first one "What's new in Connector/C 3.0: Part I SSL" can be found

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 22 Aug 2022

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable changes

• : Fixed crash when reconnecting via TLS

• : Disable sigpipe errors for GnuTLS

• : Infinite loop in pvio_socket_internal_connect: Kudos to Hugo Wen who reported this issue and provided a fix)

• : Replaced server error code constants in communication (ma_net)

• Fixed build for static plugins

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 9 Apr 2025

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Issues fixed:

• : Valid named pipe connection on Windows is closed. Fixed different behavior of pvio_is_alive (which was first used with fix of ). Both for sockets and named pipe the function now returns true if the connection is alive, otherwise false

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 21 Dec 2018

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

• Added missing pdb's to windows installer

• Fixed windows build when using external zlib

• mingw fix: use lowercase names for include files

• : Fixed handshake errors when mixing TLSv1.3 cipher suites with cipher suites from other TLS protocols

New features

• : Added new caching_sha2_password authentication plugin for authentication with MySQL 8.0

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Download Release Notes Changelog

Release date: 21 Jun 2024

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Issues fixed:

• : Don't allow to use unsupported client flags in mysql_real_connect

• : Fix memory leak when setting default configuration directories

• : Don't trust error packets received prior to TLS handshake completion. (Kudos to Daniel Lenski for his contribution

Notable changes

• Allow named pipe connection handle to be used with IO completion port. Pipe handle can be obtained via mysql_get_socket() API function. Added support for zstd static library (Kudos to Uilian Ries for his contribution)

• Added support for restricted_auth in configuration files

• - Server now permits to send a result-set containing generated id and affected rows for each bulk operation. This feature can be enabled with option MARIADB_OPT_BULK_UNIT_RESULTS. The server indicates if this feature is supported by setting MARIADB_CLIENT_BULK_UNIT_RESULTS in his capability flags.

Contributions

• Warning fixes (-Wcalloc-transposed-args) in calloc calls (Thanks to Sam James)

• Fixed SSL_read/write return value check in ma_tls_async_check_result (Thanks to Josh Hunt)

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 23 Feb 2021

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Bugs Fixed

• : Fix warnings generated during compilation of plugin/auth_pam/testing/pam_mariadb_mtr.c on FreeBSD

• : Fixed warning on MacOS when including ucontext.h

• : Check if mysql->options.extension was allocated before checking async_context

• : C/C looks for plugins in wrong location on Windows

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 19 June 2020

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

• : Use servers preferred authentication method unless another plugin was specified.

• Added support for kFreeBSD builds

• Fixed memory leak in GnuTLS if connection couldn't be established.

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 14 Nov 2018

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

• Build fixes when building with ASAN/TSAN

• : Fixed memory leak in configuration file parsing.

• : Incorrect fractional part conversion when converting datetime string to MYSQL_TIME

• : Fixed pkg-config configuration

• : Not all sockets created in pvio_socket_connect function are closed

• multiple fixes in named pipe implementation

• OpenSSL build fixes on Windows platforms

New features

• : Added new parameter STMT_ATTR_STATE to retrieve statement status via api function mysql_stmt_attr_get

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 7 Sep 2018

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug Fixes

• Fix for security vulnerability

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 4 Aug 2016

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

New features

• Added support for OpenSSL 1.1 library

Notable Bug fixes

• : Fixed wrong behaviour of mysql_stmt_fetch_column: If a blob is fetched in pieces, offset was ignored.

• : When retrieving large result sets mysql_stmt_store_result was 4 times slower than libmysql due to extra loops in alloc_root() function. (see also )

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 13 May 2019

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

• : Host option in configuration file is ignored

• : Fixed crash when server sent session tracking information with session type SESSION_TRACK_STATE_CHANGE

• : MariaDB does not verify IP addresses from subject alternative names

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 11 Sep 2019

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

• : Use windows crypto libraries on Windows platforms

• Included in , , and

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 7 Jun 2018

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug Fixes

• : Copy all members of MYSQL_FIELD from mysql->fields to stmt->fields

• Fixed conversion from string to MYSQL_TIME type (prepared statements)

• Added missing status defines (SERVER_STATUS_ANSI_QUOTES, SERVER_STATUS_IN_TRANS_READONLY)

• : Added new default connection attribute _server_host

• : Changed default character set to latin1

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 9 Dec 2015

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

• : Build fails with -DWITH_OPENSSL=On in Visual Studio 2015

• Disable nagle algorithm for tcp/ip connections on Windows by default

• ssl-validate-cert incorrect hostname check

• Support for CMake versions >= 3.0

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 29 Nov 2012

This is the initial Stable (GA) release of the MariaDB Client Library for C. In general, marking this release as stable means that there are no known serious bugs, except for those marked as feature requests, that no bugs were fixed since last release that caused a notable code changes, and that we believe the code is ready for general usage (based on bug inflow).

For a description of this library see the page.

For a list of changes made in this release, with links to detailed information on each push, see the changelog.

Download Release Notes Changelog

Release date: 21 Nov 2025

This is a Stable (GA) release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Notable Items

• Included in MariaDB Community Server , and

Summary

This release includes internal improvements to the build system and continuous integration setup. There are no user-facing changes, bug fixes, or new features in this version.

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

DownloadRelease NotesChangelogAbout MariaDB Connector/C

Release date: 29 Jan 2020

This is a Stable (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

• Included in , , and

• TLS/SSL: when the client doesn't procide a CA file and the option ssl_verify_server_cert was set, the peer cerificate will be validated against the system CA.

• Fixes for the following :

Changelog

For a list of changes made in this release, with links to detailed information on each push, see the .

Release date: 19 Feb 2024

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

Release date: 12 Nov 2024

This is a release of MariaDB Connector/C, formerly known as MariaDB Client Library for C.

MariaDB Connector/C 3.1.25 was not released separately but is included in . MariaDB Connector/C 3.1.26 includes additional bug fixes for the Connector.

For a description of this library see the page.

Issues fixed:

Release date: 26 Apr 2016

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

Release date: 18 Nov 2015

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C. In general, marking this release as stable means that there are no known serious bugs, except for those marked as feature requests, that no bugs were fixed since last release that caused a notable code changes, and that we believe the code is ready for general usage (based on bug inflow).

For a description of this library see the page.

Release date: 3 Apr 2014

This is a (GA) release of the MariaDB Client Library for C. In general, marking this release as stable means that there are no known serious bugs, except for those marked as feature requests, that no bugs were fixed since the last release that caused notable code changes, and that we believe the code is ready for general usage (based on bug inflow).

For a description of this library, see the page.

Release date: 11 Feb 2019

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

Release date: 18 Jan 2017

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

New features

Plugin API interface change: Changed the interface of authentication plugins, so plugins from C/C 3.0 (like GSSAPI/Kerberos plugin) can be used with Connector/C 2.3

Release date: 12 Dec 2019

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes and Changes

Release date: 14 May 2020

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes

Release date: 1 Jul 2016

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

New features

New option MARIADB_OPT_VERIFY_LOCAL_INFILE_CALLBACK

Release date: 7 Jun 2018

This is a (GA) release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Bug fixes

Release date: 19 Jun 2019

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Bug fixes

Release date: 11 Nov 2019

This is a release of the MariaDB Connector/C, formerly known as MariaDB Client Library for C.

For a description of this library see the page.

Notable Changes