MariaDB Error 1765: System Variable in Function/Trigger

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Description

This error indicates an attempt to modify a MariaDB system variable (e.g., `@@sql_mode`, `@@autocommit`) from within a stored function or trigger. MariaDB restricts setting system variables in these contexts to ensure deterministic behavior, prevent unexpected side effects, and maintain data consistency during transactions.

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Error Message

The system variable %s cannot be set in stored functions or triggers.

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Known Causes

3 known causes

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Direct System Variable Assignment

Attempting to use `SET` or `SELECT @@variable_name := value` to modify a system variable within the `BEGIN...END` block of a function or trigger.

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Operation in Restricted Context

Executing SQL statements that implicitly or explicitly try to alter session or global system settings when defined inside a stored function or trigger.

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Misunderstanding Routine Scope

Developers might mistakenly assume system variables can be freely manipulated within stored routines, similar to regular SQL scripts.

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Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

Check the error message carefully for specific details
Review recent changes that might have caused the error
Search for the exact error code in the official documentation
Check log files for additional context
Try restarting the application or service

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Related Errors

5 related errors