MariaDB vs MySQL
Where MariaDB Came From
MariaDB vs MySQL is mostly a story about one project splitting into two. MariaDB began as a fork of MySQL, meaning a copy of its code that then developed along its own path.
MariaDB was created by Michael "Monty" Widenius, one of the original developers of MySQL, amid Oracle's acquisition of Sun Microsystems, which owned MySQL at the time. The project takes its name from Widenius's daughter Maria. It is open source and developed by a community, with the MariaDB Foundation overseeing its governance.
Where MariaDB and MySQL Stay Compatible
Because MariaDB started from the same code, most applications work on either server without changes. The same SQL statements, client libraries and connection methods work for common tasks, and tools such as backup utilities and admin interfaces usually behave the same way.
- Basic queries, joins, transactions and indexes behave the same way in common cases.
- Popular applications, including WordPress, run on both.
- Logical backups can often move between the two, although version differences still matter.
Where the Two Databases Diverge
Compatibility is high but not complete. Over time, each project has added its own features and changed some internal behavior.
- JSON support differs. MySQL has a native JSON data type, while MariaDB stores JSON as text and provides functions to work with it.
- Storage engines differ. Both use InnoDB, but MariaDB includes some engines that MySQL does not ship.
- Features and replication details diverge over time, including some extensions to SQL syntax and differences in replication and authentication options.
Because of these gaps, a query or setting that works on one server may fail or behave differently on the other.
Frequently asked questions
Can I switch from MySQL to MariaDB?
Often yes, especially for simple setups, because the two are highly compatible. Still, check that your application and its plugins support the MariaDB version you plan to use, test with a copy of your data, and keep a full backup before changing anything. Features that exist only on one server will need attention.
Which one should a website owner choose?
Most websites and applications run on either server, so the choice often follows what the host offers. Check the requirements of your software, such as a content management system or plugin, and choose the option it lists as supported. Neither option is universally better.