> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/community-server/old-releases/5.2/5.2.1.md).

# MariaDB 5.2.1 Release Notes

The most recent release in the [MariaDB 5.2 series](/docs/release-notes/community-server/old-releases/5.2/changes-improvements-in-mariadb-5-2.md) is:[**MariaDB 5.2.14**](/docs/release-notes/community-server/old-releases/5.2/5.2.14.md)

[Download](https://archive.mariadb.org/mariadb-5.2.1-beta/) | **Release Notes** | [Changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-52-series/mariadb-521-changelog.md) |[Overview of 5.2](/docs/release-notes/community-server/old-releases/5.2/changes-improvements-in-mariadb-5-2.md)

**Release date:** 18 Jun 2010

### Release Notes

See the [MariaDB versus MySQL](https://mariadb.com/docs/release-notes/compatibility-and-differences/mariadb-vs-mysql-compatibility) page for a high-level overview of the differences between MariaDB and MySQL.

The [Changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-52-series/mariadb-521-changelog.md) has a detailed list of the changes included in this release. For a description of this release see the [MariaDB 5.1 overview](/docs/release-notes/community-server/old-releases/5.1/changes-improvements-in-mariadb-5-1.md).

#### OQGraph storage engine

This version of MariaDB includes the [OQGRAPH storage engine](/docs/server/server-usage/storage-engines/oqgraph-storage-engine.md).

#### Extending CREATE TABLE

This version of MariaDB includes some bugfixes and small changes for MWL#43: *Extending CREATE TABLE*. See [Extending CREATE TABLE](/docs/server/reference/product-development/plugin-development/storage-engines-storage-engine-development/engine-defined-new-tablefieldindex-attributes.md) for more information on the new options this worklog gives to storage engine developers.

#### New command line option

This version of MariaDB supports a new command line option `--plugin-maturity=XXX`, where `XXX` can be one of`unknown`,`experimental`,`alpha`,`beta`,`gamma`,`stable`.

When used, MySQL will refuse to load plugins that have a maturity less than specified in this command line option.

#### Bugfixes

Several bugfixes and buildbot improvements have also been incorporated into this version of [MariaDB 5.2](/docs/release-notes/community-server/old-releases/5.2/changes-improvements-in-mariadb-5-2.md) including some that were discussed during the 2010 Storage Engine summit. See the [changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-52-series/mariadb-521-changelog.md) for links to the details.

{% hint style="info" %}
Be notified of new MariaDB Server releases automatically by [subscribing](https://lists.mariadb.org/postorius/lists/announce.lists.mariadb.org/) to the MariaDB Foundation community announce 'at' lists.mariadb.org announcement list (this is a low traffic, announce-only list). MariaDB plc customers will be notified for all new releases, security issues and critical bug fixes for all MariaDB plc products thanks to the Notification Services.

MariaDB may already be included in your favorite OS distribution. More information can be found on the [Distributions which Include MariaDB](/docs/general-resources/distributions-including-mariadb.md) page.
{% endhint %}

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