MySQL raises error 1107 when a CALL statement passes a different number of arguments than the stored procedure definition expects.
MySQL Error 1107: ER_WRONG_PARAMCOUNT_TO_PROCEDURE appears when a CALL statement supplies too many or too few parameters compared with the procedure definition. Verify the procedure signature with SHOW CREATE PROCEDURE, then adjust the CALL argument list or alter the procedure to match - that resolves the issue.
Incorrect parameter count to procedure '%s'
Error 1107 signals that MySQL could not match the argument list supplied in a CALL statement with the parameter list declared in the target stored procedure. The server checks the count before executing the routine.
The mismatch can be either too many or too few parameters.
MySQL aborts execution and returns SQLSTATE 42000 along with ER_WRONG_PARAMCOUNT_TO_PROCEDURE.
The error fires at compile time for prepared statements and at runtime for direct calls. It surfaces in MySQL 5.x, 8.x, and Percona/MariaDB forks when a CALL, EXECUTE IMMEDIATE, or mysql.proc entry is invoked incorrectly.
Unhandled, the procedure never runs, business logic stops, and dependent applications may crash.
In production, repeated failures can flood logs and saturate connection pools.
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Developers alter a procedure by adding or removing parameters but forget to update every CALL site, causing an argument mismatch.
CALL statements often omit OUT parameters, assuming they are optional, yet MySQL counts them just like IN parameters.
Application code builds CALL strings dynamically and sometimes skips a placeholder variable, sending fewer arguments than required.
A misspelled procedure name may resolve to a different routine that takes a different signature, triggering error 1107.
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Yes. MySQL counts every parameter defined in the procedure header, regardless of mode. Supply variables for OUT and INOUT slots in the CALL statement.
MySQL stored procedures do not support default values. You must pass a value for every parameter position.
No. MySQL validates parameter count when the prepared CALL executes. The error will still appear.
Galaxy’s context-aware autocomplete surfaces the exact parameter list when you type CALL, preventing mismatches. Shared, endorsed snippets ensure all teammates reference the up-to-date signature.
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