Have you ever written a query where the GROUP BY was easy, but the aggregate was the problem?
You know how to group the rows.
You know what result you want for each group.
But none of the built-in aggregate functions really match your logic.
So you end up with a long expression using SUM(), CASE, IF(), GROUP_CONCAT(), JSON functions, or application-side code. It works, but it is not beautiful. And if you need the same logic in several places, it becomes even worse.
This is exactly the kind of problem MariaDB’s CREATE AGGREGATE FUNCTION solves.
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Continue reading “MariaDB Hidden Gem: Create Aggregate Function”
The MariaDB Foundation Sea Lions Champions recognize individuals and organizations that strengthen the MariaDB ecosystem through technical excellence, community leadership, open-source stewardship, ecosystem impact, and real-world adoption.
This first edition’s nominees reflect the diversity and strength of the MariaDB Community: developers, educators, advocates, companies, community organizers, and partners who help MariaDB grow as an open, collaborative, and industry-relevant database platform.
Each nomination highlights a different way to strengthen the database ecosystem and help MariaDB remain open, useful, and innovative.
Technical Excellence
The Technical Excellence category highlights people who contribute deep technical expertise, engineering quality, and innovation around MariaDB and the broader database ecosystem.
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Continue reading “Celebrating the MariaDB Foundation Sea Lions Champions Nominees”
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Continue reading “MariaDB Foundation: Bringing TPC-B Back To Life”
If you are a Galera user, you are strongly recommended to upgrade ASAP!
MariaDB Community Server corrective releases are now available for the currently maintained long-term series. These releases address critical CVEs, and we strongly recommend that all users review the security advisories and upgrade as soon as possible.
These are Stable (GA) releases and are recommended for users running the corresponding MariaDB Server series.
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We have a new record average time to process a pull request: 21 days!
Part of my job is following (and trying to improve of course) some key metrics about MariaDB Server pull request processing. As a part of that I compile a nice pull request metric and a graph of it. This is what it looked like for the last month:
There’s a single number that caught my attention: 21.05 ! This is a new record low! That’s how much it takes on average from opening a pull request to closing it for all the requests closed last month!
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Continue reading “A New Pull Request Processing Time Record”
The MariaDB Foundation is pleased to announce the availability of MariaDB Server 12.3 LTS, the latest Long Term Support release of MariaDB Server. The first GA of the 12.3 series is 12.3.2.
MariaDB Server 12.3 LTS includes the features and improvements introduced during the MariaDB 12.x development series and provides a stable release line for production environments requiring long-term maintenance.
Highlights
MariaDB Server 12.3 LTS includes improvements across several areas of the server, including binary logging, SQL compatibility, replication, optimizer behavior, security, GIS, JSON, and general server usability.
Important
In MariaDB 12.3, innodb_snapshot_isolation defaults to ON
As we wanted to be correct when using REPEATBLE READ isolation level, we changed the default of the InnoDB snapshot isolation.
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Last week, Oracle invited MariaDB Foundation to give a presentation at Oracle’s MySQL Contributor Summit 2026. I had the opportunity to participate remotely and speak about MariaDB’s role within the broader MySQL ecosystem.
First of all, I would like to thank Heather VanCura, VP Community Engagement at Oracle, and Jason Wilcox, SVP Data Services at Oracle, for the invitation and for creating a space where these discussions could happen openly and constructively.
The presentation itself is available here on YouTube. At just over 17 minutes, it is reasonably compact viewing for anyone interested in the current state — and possible future direction — of the MySQL ecosystem.
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We are delighted to announce that Virtuozzo has renewed its sponsorship of MariaDB Foundation.
Virtuozzo has been a long-standing supporter of open infrastructure, service providers, and cloud platforms, and we are very pleased to continue strengthening our collaboration.
At MariaDB Foundation, sponsorship is not only about financial support. It is also about building useful, practical ecosystem work around MariaDB Server together with organizations that care about open technology, reliable infrastructure, and long-term user choice.
With Virtuozzo, we see strong alignment around open cloud infrastructure, database performance, operational reliability, and practical deployment models for service providers, SaaS platforms, and enterprise environments.
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