Error 1336 appears when a disallowed statement is placed in a stored function, trigger, or event.
MySQL Error 1336: ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG arises when MySQL finds a statement such as ALTER TABLE or COMMIT inside a stored function or trigger. Remove or move the prohibited statement outside the routine to resolve the issue.
%s is not allowed in stored function or trigger
MySQL throws error 1336 with message "%s is not allowed in stored function or trigger" when the server encounters a SQL statement that is prohibited inside a stored function, trigger, or event. The placeholder %s is replaced by the offending statement keyword.
The restriction exists because certain statements change transactional context, generate implicit commits, or modify schema metadata, which would break the atomicity that stored functions and triggers rely on.
Error 1336 surfaces at compile time or runtime whenever MySQL parses disallowed statements such as CREATE TEMPORARY TABLE, ALTER TABLE, COMMIT, or LOAD DATA INFILE inside the body of a stored function, trigger, or scheduled event.
Leaving the error unresolved blocks creation or execution of the routine, preventing business logic, data validation, or automation from functioning. Production deployments that rely on these objects will fail until code is corrected.
The primary cause is including non-deterministic, schema-altering, or transaction-control statements inside routine code. MySQL forbids them to guarantee consistent behavior, replication safety, and binary-log correctness.
Identify the disallowed statement from the error message, move that logic outside the stored function or trigger, or replace it with an allowed alternative. For example, transform CREATE TEMPORARY TABLE calls into explicit table variables in application code.
Developers often try to bulk-load files in a trigger with LOAD DATA INFILE; move the load to application code and call the trigger afterwards. Another scenario is using explicit COMMIT in a function; remove it because functions run within the caller's transaction.
Keep stored functions and triggers side-effect-free. Limit them to deterministic SELECT, INSERT, UPDATE, and DELETE statements on permanent tables. Validate code in a modern SQL IDE like Galaxy, which highlights disallowed statements before deployment.
Similar routine-scope restrictions include Error 1422 (explicit or implicit commit), Error 1459 (recursive triggers), and Error 1442 (updating table in trigger). Fix them by adopting the same principle: remove or refactor forbidden statements.
Including COMMIT or ROLLBACK inside a stored function or trigger violates MySQL's atomic routine rules and triggers error 1336.
DDL statements perform implicit commits and alter schema metadata, so MySQL blocks them inside routines and returns error 1336.
File system interaction can compromise replication safety and determinism, making these statements disallowed inside stored functions or triggers.
If a routine calls another procedure that contains a forbidden statement, MySQL detects it and still raises error 1336.
Raised when a routine executes statements that cause an implicit commit, such as ALTER TABLE.
Occurs when a trigger updates the same table that fired it.
Thrown when a trigger invokes itself recursively.
Often appears when refactoring routines after removing forbidden DDL statements.
No. MySQL blocks ALTER TABLE inside routines regardless of binlog settings because it creates implicit commits and breaks atomicity.
Deterministic DML like SELECT, INSERT, UPDATE, DELETE, simple SET statements, and variable assignments are allowed. Transaction control, DDL, and file I/O are not.
Most restrictions apply only to stored functions, triggers, and events. Stored procedures allow a wider range of statements, including transactional control.
Galaxy's linting engine flags disallowed statements in real time. Team members can endorse corrected routines, ensuring that only compliant SQL reaches production.
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