User-Defined Functions

Extend MariaDB Server's capabilities with user-defined functions (UDFs). Learn how to create and implement custom functions to perform specialized operations directly within your SQL queries.

User-Defined Functions Overview

An introduction to User-Defined Functions (UDFs) in MariaDB, explaining how they extend the server's functionality by adding new native-like functions.

Creating User-Defined Functions

A guide for developers on writing UDFs in C/C++, covering the required interface functions, memory allocation, and thread safety.

CREATE FUNCTION UDF

Install a user-defined function from a shared library. This command loads an external compiled function into the server for extended capabilities.

DROP FUNCTION UDF

Documentation for the DROP FUNCTION statement, which uninstalls a UDF and removes its entry from the system table.

User-Defined Functions Calling Sequences

Technical details on the execution flow of UDFs, explaining the sequence in which initialization, processing, and de-initialization functions are called.

User-Defined Functions Security

Overview of security measures for UDFs, including file location restrictions, required privileges, and system variable configurations.

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