Category Archives: Plugins
MariaDB already allows developers to add new Pluggable Data Types and scalar Plugin Functions. One missing piece has been Pluggable Aggregate Functions operating on PDTs. That matters for functionality such as HyperLogLog, where an extension needs to aggregate values into a custom statistical sketch while preserving its native SQL type.
MDEV-40672 closes that architectural gap. Aggregate functions can now participate in MariaDB’s native aggregation infrastructure, including DISTINCT, window execution, prepared statements and Pluggable Data Types.
MariaDB already supports MariaDB_FUNCTION_PLUGIN, a mechanism for registering SQL functions that create regular server Item objects and can behave almost like built-in functions.
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During the last MariaDB Foundation Board Meeting (24 June 2026), Barry shared how it can be difficult to deploy an upgrade immediately and that they sometimes have to wait for one that fixes security bugs. Wait for the validation, wait for the fix, and the release. Even if the MariaDB engineers are doing incredible work, it might still not be fast enough for the security team.
That’s where Barry requested MariaDB implement a query-rewriter plugin, like the one in MySQL, to address the fact that, in a multi-tenant environment, certain queries that would trigger known vulnerabilities are never legitimately used by applications.
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Continue reading “MariaDB Server Plugins: disabled functions”