MySQL raises error 1108 when a stored procedure is invoked with a parameter list that does not match the procedure's definition.
MySQL Error 1108: ER_WRONG_PARAMETERS_TO_PROCEDURE occurs when a stored procedure is called with too many, too few, or incompatible parameters. Check the procedure definition in your region’s database instance and supply the exact number, order, and data types to resolve the issue.
Incorrect parameters to procedure '%s'
Error 1108 appears with the message “Incorrect parameters to procedure 'proc_name'.” MySQL throws it when the argument list supplied in a CALL statement does not match the stored procedure’s declared parameters.
Mismatch includes wrong count, incorrect order, NULLs where NOT NULL is required, or incompatible data types.
The server rejects the invocation before execution, so no procedure logic runs.
The error surfaces during runtime whenever a CALL statement, prepared statement, or client API tries to execute a procedure with an invalid argument list. It is version-agnostic and affects MySQL 5.x, 8.x, Aurora MySQL, and compatible MariaDB builds.
Frequent parameter errors break application workflows, trigger transaction rollbacks, and degrade user experience.
Cleaning them early safeguards data integrity and ensures stored routines remain reliable building blocks in Galaxy or any SQL editor.
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Supplying more or fewer arguments than the procedure signature defines immediately triggers error 1108.
MySQL binds arguments positionally.
A swapped order can send INT where VARCHAR is expected and provoke the error.
Passing an incompatible type (e.g., string to INT) causes implicit conversion failure and raises the error.
Calling the procedure with NULL for a NOT NULL parameter breaches the definition and MySQL rejects the call.
CLIENT APIs sometimes forget to register placeholders for OUT/INOUT parameters, prompting a mismatch.
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No. MySQL only supports positional parameters in CALL statements, so order must match the procedure definition.
Galaxy’s inline schema browser shows procedure signatures. Hover over the procedure name while typing CALL to view expected parameters.
Not natively. You can simulate defaults by making parameters NULLable and handling defaults inside the procedure body.
If you omit a variable placeholder for an OUT or INOUT parameter, MySQL counts arguments incorrectly and raises error 1108.
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