MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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Sergei Petrunia b293abe7a5 MDEV-36410: review input:
Fix the tescases:
- if EXPLAIN shows that the query isn't using index_merge.
what is the purpose of running SELECT to check the query output?
We do know we are not running index_merge. We use ref access and
we never had reasons to doubt ref access.

- As pointed out earlier, different ORDER BY .. LIMIT clauses do
not add any value.

- Instead, let's check optimizer to see that affected range scans
do not have the ROR property.

Fix the code:
- Suprisingly, is_key_scan_ror() is called with keynr==clustered_pk.
  just return true in that case.
- Rephrase comment
- re-order parts of the condition to be more readable.
2025-07-09 09:56:19 +03:00
.github Merge 10.6 into 10.9 2023-05-19 15:11:06 +03:00
BUILD Merge branch '10.6' into 10.11 2024-04-26 08:02:49 +02:00
client Merge 10.6 into 10.11 2025-05-26 08:10:47 +03:00
cmake Debian/Hurd doesn't support auth_socket 2025-06-18 09:11:28 +10:00
dbug Merge 10.6 into 10.8 2023-02-10 13:43:53 +02:00
debian Merge branch '10.6' into 10.11 2025-01-30 11:55:13 +01:00
Docs Merge 10.4 into 10.5 2022-09-26 13:34:38 +03:00
extra MDEV-34425 mroonga files are not copied by mariabackup 2025-06-18 10:23:47 +10:00
include Merge branch '10.6' into 10.11 2025-06-04 14:09:23 +02:00
libmariadb@55abb32038 new CC 2025-04-20 20:48:21 +02:00
libmysqld Merge branch '10.6' into 10.11 2025-01-30 11:55:13 +01:00
libservices Merge 10.6 into 10.11 2024-02-08 15:04:46 +02:00
man Merge branch '10.6' into 10.11 2024-07-22 15:14:50 +02:00
mysql-test MDEV-36410: review input: 2025-07-09 09:56:19 +03:00
mysys Enable use of elf_aux_info() to detect CPU features on aarch64 and powerpc64 2025-06-14 17:39:01 +10:00
mysys_ssl MDEV-35838 libressl support differences in CRYPTO_set_mem_functions 2025-01-14 12:13:22 +11:00
plugin MDEV-12305 FTBFS on hurd-i386 due to PATH_MAX 2025-06-18 09:11:28 +10:00
randgen/conf Group commit for maria engine. 2010-02-12 15:12:28 +02:00
scripts Replace deprecated CMAKE_COMPILER_IS_GNU(CC|CXX) with CMAKE_(C|CXX)_COMPILER_ID 2025-06-03 18:16:35 +10:00
sql MDEV-36410: review input: 2025-07-09 09:56:19 +03:00
sql-bench Updated sql-bench to run with PostgreSQL 14.9 2023-09-09 15:14:45 +03:00
sql-common Merge branch '10.6' into 10.11 2025-01-30 11:55:13 +01:00
storage MDEV-36962 innodb.log_file_overwrite fails with ASAN 2025-06-18 15:31:28 +10:00
strings MDEV-36765: JSON Histogram cannot handle >1 byte characters 2025-06-09 21:15:30 +03:00
support-files Merge branch '10.6' into 10.11 2025-04-26 10:47:03 +02:00
tests Merge branch '10.6' into 10.11 2025-04-26 10:47:03 +02:00
tpool Merge branch '10.6' into 10.11 2025-04-21 11:23:11 +02:00
unittest Merge 10.6 into 10.11 2024-12-19 15:38:53 +02:00
vio Merge branch '10.6' into 10.11 2025-05-26 16:59:32 +02:00
win MDEV-36938 Fix MSI install failure when ADDLOCAL omits required runtime 2025-06-10 14:23:31 +02:00
wsrep-lib@e55f01ce1e MDEV-36422 Build fails with cmake 4.0.0 due to wsrep 2025-04-10 13:05:19 +02:00
zlib Merge branch 'merge-zlib' (1.3.1) into 10.4 2024-04-26 13:50:03 +02:00
.clang-format Remove duplicate key "Language" from .clang-format 2024-04-17 16:52:37 +02:00
.gitattributes Merge branch '10.5' into 10.6 2022-02-03 17:01:31 +01:00
.gitignore Merge 10.6 into 10.11 2025-05-21 07:36:35 +03:00
.gitlab-ci.yml Merge branch '10.6' into 10.11 2024-07-22 15:14:50 +02:00
.gitmodules Merge remote-tracking branch '10.4' into 10.5 2023-03-31 21:32:41 +02:00
appveyor.yml Fix appveyor config 2025-04-18 19:53:55 +02:00
BUILD-CMAKE Minor spelling fixes in code comments, docs and output 2018-01-12 16:49:02 +02:00
CMakeLists.txt Replace deprecated CMAKE_COMPILER_IS_GNU(CC|CXX) with CMAKE_(C|CXX)_COMPILER_ID 2025-06-03 18:16:35 +10:00
config.h.cmake Cleanup CMake code (Windows-specific) 2025-04-04 08:58:40 +02:00
configure.cmake Merge branch '10.6' into 10.11 2024-10-29 15:24:38 +01:00
CONTRIBUTING.md Remove mention of Freenode 2021-09-22 07:15:08 +02:00
COPYING Update FSF Address 2019-05-11 21:29:06 +03:00
CREDITS Update sponsors 2024-08-12 09:32:30 +01:00
INSTALL-SOURCE Update AskMonty and Atlassian references to MariaDB 2016-03-08 15:24:01 +02:00
INSTALL-WIN-SOURCE Update AskMonty and Atlassian references to MariaDB 2016-03-08 15:24:01 +02:00
KNOWN_BUGS.txt Changed some MySQL names in messages to MariaDB 2018-12-09 20:49:05 +02:00
README.md Update README for branch choice 2024-05-29 13:49:32 +01:00
THIRDPARTY Merge branch '10.6' into 10.11 2024-02-01 18:36:14 +01:00
VERSION bump the VERSION 2025-05-22 10:23:36 -04:00

Code status:

  • Appveyor CI status ci.appveyor.com

MariaDB: The innovative open source database

MariaDB was designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance.

MariaDB is brought to you by the MariaDB Foundation and the MariaDB Corporation. Please read the CREDITS file for details about the MariaDB Foundation, and who is developing MariaDB.

MariaDB is developed by many of the original developers of MySQL who now work for the MariaDB Corporation, the MariaDB Foundation and by many people in the community.

MySQL, which is the base of MariaDB, is a product and trademark of Oracle Corporation, Inc. For a list of developers and other contributors, see the Credits appendix. You can also run 'SHOW authors' to get a list of active contributors.

A description of the MariaDB project and a manual can be found at:

https://mariadb.org

https://mariadb.com/kb/en/

https://mariadb.com/kb/en/mariadb-vs-mysql-features/

https://mariadb.com/kb/en/mariadb-versus-mysql-compatibility/

https://mariadb.com/kb/en/new-and-old-releases/

Getting the code, building it and testing it

Refer to the following guide: https://mariadb.org/get-involved/getting-started-for-developers/get-code-build-test/ which outlines how to build the source code correctly and run the MariaDB testing framework, as well as which branch to target for your contributions.

Help

More help is available from the Maria Discuss mailing list https://lists.mariadb.org/postorius/lists/discuss.lists.mariadb.org/ and MariaDB's Zulip instance, https://mariadb.zulipchat.com/

Licensing


MariaDB is specifically available only under version 2 of the GNU General Public License (GPLv2). (I.e. Without the "any later version" clause.) This is inherited from MySQL. Please see the README file in the MySQL distribution for more information.

License information can be found in the COPYING file. Third party license information can be found in the THIRDPARTY file.


Bug Reports

Bug and/or error reports regarding MariaDB should be submitted at: https://jira.mariadb.org

For reporting security vulnerabilities see: https://mariadb.org/about/security-policy/

The code for MariaDB, including all revision history, can be found at: https://github.com/MariaDB/server