MySQL throws ER_SP_BADSELECT when a stored procedure that emits a result set is invoked from a context that does not permit result sets, such as a function, trigger, or another restricted routine.
MySQL Error 1312: ER_SP_BADSELECT occurs when a procedure that returns rows is executed where result sets are forbidden, like inside a function or trigger. Refactor the routine to use OUT parameters or temporary tables, or call it only from client code to resolve the issue.
PROCEDURE %s can't return a result set in the given
MySQL error 1312, condition name ER_SP_BADSELECT, is raised with the message “PROCEDURE %s can't return a result set in the given context.” It appears when a stored procedure that produces a result set is executed where result sets are forbidden.
The restriction applies to contexts such as stored functions, triggers, events, and certain prepared statements.
Because these contexts run inside the server, MySQL blocks any attempt to stream a result set back to the client.
Error 1312 is triggered whenever a SELECT statement inside a stored procedure tries to return rows while the caller is a routine that disallows result sets.
Typical offenders are functions, triggers, and procedures marked as deterministic but used in restricted places.
The same error appears if a client issues CALL inside a subquery or CHECK constraint, because MySQL must guarantee deterministic execution and cannot forward the result set.
Move the SELECT outside the disallowed context. Invoke the procedure directly from the client or another procedure that runs in a permissive context. Replace result-set SELECT statements with SELECT ...
INTO or SET statements that store values in OUT parameters.
When you need multiple rows, write the procedure to INSERT data into a temporary table, then read that table after the restricted routine completes.
Temporary tables survive within the same session and bypass the limitation.
Inside a function: Rewrite the logic so the function calls a deterministic query that uses INTO variables, or change the function to RETURN a scalar calculated value.
Inside a trigger: Move the heavy query into an AFTER trigger that inserts into a log table, then fetch that log table later, or call the procedure from application code instead of inside the trigger.
Within an event: Keep the event simple.
Have it call a procedure that writes to a staging table, then let an external job read the staging table.
Design stored procedures to use OUT parameters for scalar values and temporary tables for sets when reuse inside functions or triggers is required. Keep functions side-effect free and deterministic.
During code review, test routines inside all intended contexts.
Galaxy’s versioning and endorsement features help teams validate that approved routines never violate MySQL’s result-set rules.
MySQL Error 1415 (0A000): Not allowed to return a result set from a trigger - occurs when a SELECT in a trigger returns rows. Solution: remove or redirect the SELECT into a table.
MySQL Error 1336 (0A000): VIEW's SELECT contains a subquery in the FROM clause - arises when a view contains disallowed constructs.
Rewrite the view to comply with MySQL limitations.
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Stored functions cannot emit result sets. Calling a procedure that SELECTs rows from within a function immediately throws ER_SP_BADSELECT.
Triggers run inside the server context and are not allowed to return result sets. Any procedure they call must avoid plain SELECT output.
Events execute without a client connection.
Result sets would have nowhere to go, so MySQL blocks them, raising the error.
If the prepared CALL resides within a restricted routine, MySQL still enforces the no-result-set rule and issues error 1312.
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Happens when a trigger inadvertently runs a SELECT that returns rows. Remove or redirect the SELECT.
Occurs when a view definition uses disallowed subqueries. Simplify the view or materialize results.
Raised when a trigger or function updates the table that fired it.
Use AFTER triggers or queue updates instead.
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No. The limitation is baked into MySQL’s execution engine. You must refactor the routine or change where it is called.
Yes. The rule applies to all supported MySQL versions, though improved diagnostics in 8.0 make it easier to debug.
SQL_MODE settings do not influence this restriction. The only fix is restructuring the procedure or its call site.
Galaxy’s linting warns when a procedure returning rows is referenced inside a function or trigger. Version control and endorsements stop the bad code from reaching production.
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