> 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/10.4/10.4.5.md).

# MariaDB 10.4.5 Release Notes

The most recent release of [MariaDB 10.4](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series) is:[**MariaDB 10.4.34**](/docs/release-notes/community-server/old-releases/10.4/10.4.34.md) Stable (GA) [Download Now](https://downloads.mariadb.org/mariadb/10.4.34/)

[Download](https://downloads.mariadb.org/mariadb/10.4.5) | [Release Notes](/docs/release-notes/community-server/old-releases/10.4/10.4.5.md) | [Changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-10-4-series/mariadb-1045-changelog.md) | [Overview of 10.4](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series/what-is-mariadb-104)

**Release date:** 21 May 2019

[MariaDB 10.4](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series) is the current *development* series of MariaDB. It is an evolution\
of [MariaDB 10.3](/docs/release-notes/community-server/old-releases/10.3/what-is-mariadb-103.md) with several entirely new features not found anywhere else\
and with backported and reimplemented features from MySQL.

[MariaDB 10.4.5](/docs/release-notes/community-server/old-releases/10.4/10.4.5.md) is a [***Release Candidate (RC)***](/docs/release-notes/community-server/about/release-criteria.md) release.

**Do not use non-stable (non-GA) releases in production!**

**For an overview of** [**MariaDB 10.4**](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series) **see the**[**What is MariaDB 10.4?**](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series/what-is-mariadb-104) **page.**

Thanks, and enjoy MariaDB!

## Notable Changes

### General Server

* New [mysqlimport](/docs/server/clients-and-utilities/legacy-clients-and-utilities/mysqlimport.md) option, `--ignore-foreign-keys` ([MDEV-788](https://jira.mariadb.org/browse/MDEV-788)).
* Setting [sql\_mode](/docs/server/server-management/variables-and-modes/sql_mode.md) to `MSSQL` implements a limited subset of Microsoft SQL Server's language. See [SQL\_MODE=MSSQL](https://mariadb.com/docs/release-notes/compatibility-and-differences/sql_modemssql) ([MDEV-19142](https://jira.mariadb.org/browse/MDEV-19142)).
* Add [CAST(expr AS FLOAT)](/docs/server/reference/sql-functions/string-functions/cast.md) ([MDEV-16872](https://jira.mariadb.org/browse/MDEV-16872)).
* List of slave transaction errors that will result in a retry rather than a halt ([slave\_transaction\_retry\_errors](/docs/server/ha-and-performance/standard-replication/replication-and-binary-log-system-variables.md#slave_transaction_retry_errors)) have been increased by default, assisting [Spider](/docs/server/server-usage/storage-engines/spider.md) setups to be more robust ([MDEV-16543](https://jira.mariadb.org/browse/MDEV-16543)).
* [MDEV-15458](https://jira.mariadb.org/browse/MDEV-15458) - Segfault in heap\_scan() upon UPDATE after ADD SYSTEM VERSIONING
* [MDEV-19235](https://jira.mariadb.org/browse/MDEV-19235) - MariaDB Server compiled for 128 Indexes crashes at startup

### JSON

* [JSON\_MERGE\_PATCH](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge_patch.md) and [JSON\_MERGE\_PRESERVE](/docs/server/reference/sql-functions/special-functions/json-functions/json_merge_preserve.md) ([MDEV-13992](https://jira.mariadb.org/browse/MDEV-13992))

### InnoDB

* Merge InnoDB changes from MySQL 5.6.44 and 5.7.26
* Fixes of corruption or crashes: [MDEV-19241](https://jira.mariadb.org/browse/MDEV-19241), [MDEV-13942](https://jira.mariadb.org/browse/MDEV-13942), [MDEV-19385](https://jira.mariadb.org/browse/MDEV-19385), [MDEV-16060](https://jira.mariadb.org/browse/MDEV-16060), [MDEV-18220](https://jira.mariadb.org/browse/MDEV-18220), [MDEV-17540](https://jira.mariadb.org/browse/MDEV-17540)
* InnoDB recovery fixes and speedup: [MDEV-12699](https://jira.mariadb.org/browse/MDEV-12699), [MDEV-19356](https://jira.mariadb.org/browse/MDEV-19356)

### Encryption

* [MDEV-14398](https://jira.mariadb.org/browse/MDEV-14398) - innodb\_encrypt\_tables will work even with innodb\_encryption\_rotate\_key\_age=0

### System-Versioned Tables

* [MDEV-15966](https://jira.mariadb.org/browse/MDEV-15966) - [System-versioned tables](/docs/server/reference/sql-structure/temporal-tables/system-versioned-tables.md) are now protected from [TRUNCATE TABLE](/docs/server/reference/sql-statements/table-statements/truncate-table.md) statements.

### Information schema

* [MDEV-19490](https://jira.mariadb.org/browse/MDEV-19490) show tables fails when selecting the information\_schema database

### Statistics

* [MDEV-19407](https://jira.mariadb.org/browse/MDEV-19407) - Assertion \`field->table->stats\_is\_read' failed in is\_eits\_usable
* New status variable, [Aborted\_connects\_preauth](/docs/server/server-management/variables-and-modes/server-status-variables.md#aborted_connects_preauth), that records the number of connection attempts that were aborted prior to authentication ([MDEV-19277](https://jira.mariadb.org/browse/MDEV-19277)).

### Packaging

* As per the [MariaDB Deprecation Policy](/docs/release-notes/community-server/about/platform-deprecation-policy.md), this is the last release of [MariaDB 10.4](https://mariadb.com/docs/release-notes/mariadb-community-server-release-notes/old-releases/release-notes-mariadb-10-4-series) for Fedora 28
* Packages and a repository for Fedora 30 and Ubuntu 19.04 "disco" have been added with this release, visit the [Repository Configuration Tool](https://downloads.mariadb.org/mariadb/repositories/) for instructions on adding the repository

### Security

* Fixes for the following [security vulnerabilities](/docs/server/security/cve.md):
  * [CVE-2019-2614](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-2614)
  * [CVE-2019-2627](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-2627)
  * [CVE-2019-2628](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-2628)

## Changelog

For a complete list of changes made in [MariaDB 10.4.5](/docs/release-notes/community-server/old-releases/10.4/10.4.5.md), with links to detailed\
information on each push, see the [changelog](/docs/release-notes/community-server/changelogs/changelogs-mariadb-10-4-series/mariadb-1045-changelog.md).

## Contributors

For a full list of contributors to [MariaDB 10.4.5](/docs/release-notes/community-server/old-releases/10.4/10.4.5.md), see the [MariaDB Foundation release announcement](https://mariadb.org/mariadb-10-4-5-now-available/).

{% 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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