ALTER ROUTINE
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## ALTER ROUTINE

ALTER ROUTINE — change the definition of a routine

## Synopsis

    ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
        action [ ... ] [ RESTRICT ]
    ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
        RENAME TO new_name
    ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
        OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
    ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
        SET SCHEMA new_schema
    ALTER ROUTINE name [ ( [ [ argmode ] [ argname ] argtype [, ...] ] ) ]
        [ NO ] DEPENDS ON EXTENSION extension_name

    where action is one of:

        IMMUTABLE | STABLE | VOLATILE
        [ NOT ] LEAKPROOF
        [ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER
        PARALLEL { UNSAFE | RESTRICTED | SAFE }
        COST execution_cost
        ROWS result_rows
        SET configuration_parameter { TO | = } { value | DEFAULT }
        SET configuration_parameter FROM CURRENT
        RESET configuration_parameter
        RESET ALL

## Description

`ALTER ROUTINE` changes the definition of a routine, which can be an aggregate function, a normal function, or a procedure. See under ALTER AGGREGATE, ALTER FUNCTION, and ALTER PROCEDURE for the description of the parameters, more examples, and further details.

## Examples

To rename the routine `foo` for type `integer` to `foobar`:

    ALTER ROUTINE foo(integer) RENAME TO foobar;

This command will work independent of whether `foo` is an aggregate, function, or procedure.

## Compatibility

This statement is partially compatible with the `ALTER ROUTINE` statement in the SQL standard. See under ALTER FUNCTION and ALTER PROCEDURE for more details. Allowing routine names to refer to aggregate functions is a PostgreSQL extension.

## See Also

ALTER AGGREGATE, ALTER FUNCTION, ALTER PROCEDURE, DROP ROUTINE

Note that there is no `CREATE ROUTINE` command.

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