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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Igor Babaev 658128af43 MDEV-16188 Use in-memory PK filters built from range index scans
This patch contains a full implementation of the optimization
that allows to use in-memory rowid / primary filters built for range  
conditions over indexes. In many cases usage of such filters reduce  
the number of disk seeks spent for fetching table rows.

In this implementation the choice of what possible filter to be applied  
(if any) is made purely on cost-based considerations.

This implementation re-achitectured the partial implementation of
the feature pushed by Galina Shalygina in the commit
8d5a11122c.

Besides this patch contains a better implementation of the generic  
handler function handler::multi_range_read_info_const() that
takes into account gaps between ranges when calculating the cost of
range index scans. It also contains some corrections of the
implementation of the handler function records_in_range() for MyISAM.

This patch supports the feature for InnoDB and MyISAM.
2019-02-03 14:56:12 -08:00
BUILD
client Merge 10.3 into 10.4 2018-11-08 10:19:55 +02:00
cmake Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
dbug
debian Merge 10.3 into 10.4 2018-11-08 10:19:55 +02:00
Docs
extra Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
include MDEV-16188 Use in-memory PK filters built from range index scans 2019-02-03 14:56:12 -08:00
libmariadb@17d0e53176
libmysqld Merge 10.2 into 10.3 2018-11-06 09:40:39 +02:00
libservices
man
mysql-test MDEV-16188 Use in-memory PK filters built from range index scans 2019-02-03 14:56:12 -08:00
mysys Merge 10.3 into 10.4 2018-11-08 10:19:55 +02:00
mysys_ssl
pcre
plugin Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
randgen/conf
scripts Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
sql MDEV-16188 Use in-memory PK filters built from range index scans 2019-02-03 14:56:12 -08:00
sql-bench
sql-common MDEV-17563 Different results using table or view when comparing values of time type 2018-11-08 09:31:46 +04:00
storage MDEV-16188 Use in-memory PK filters built from range index scans 2019-02-03 14:56:12 -08:00
strings Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
support-files Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
tests MDEV-16188 Use in-memory PK filters built from range index scans 2019-02-03 14:56:12 -08:00
unittest Merge 10.2 into 10.3 2018-11-06 09:40:39 +02:00
vio Merge 10.3 into 10.4 2018-11-08 10:19:55 +02:00
win
wsrep
zlib
.gitattributes
.gitignore Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
.gitmodules
.travis.compiler.sh
.travis.yml
appveyor.yml
BUILD-CMAKE
CMakeLists.txt Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
config.h.cmake
configure.cmake Merge 10.2 into 10.3 2018-11-06 09:40:39 +02:00
COPYING
COPYING.thirdparty
CREDITS
EXCEPTIONS-CLIENT
INSTALL-SOURCE
INSTALL-WIN-SOURCE
KNOWN_BUGS.txt
README.md Merge 10.3 into 10.4 2018-11-06 16:24:16 +02:00
VERSION bump the VERSION 2018-11-09 09:53:56 -05:00

Code status:

  • tests status travis-ci.org (10.4 branch)

MariaDB: drop-in replacement for MySQL

MariaDB is 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. 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 Foundation and the MariaDB Corporation, 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-features/

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

As MariaDB is a full replacement of MySQL, the MySQL manual at http://dev.mysql.com/doc is generally applicable.

Help:

More help is available from the Maria Discuss mailing list https://launchpad.net/~maria-discuss and the #maria IRC channel on Freenode.

License:


NOTE:

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, COPYING.LESSER, and COPYING.thirdparty files.


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/

Bugs in the MySQL code can also be submitted at: https://bugs.mysql.com

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