> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/reference/sql-commands/sql-alterroutine.md).

# ALTER ROUTINE

### 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](/reference/sql-commands/sql-alteraggregate.md), [ALTER FUNCTION](/reference/sql-commands/sql-alterfunction.md), and [ALTER PROCEDURE](/reference/sql-commands/sql-alterprocedure.md) 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](/reference/sql-commands/sql-alterfunction.md) and [ALTER PROCEDURE](/reference/sql-commands/sql-alterprocedure.md) for more details. Allowing routine names to refer to aggregate functions is a PostgreSQL extension.

### See Also

[ALTER AGGREGATE](/reference/sql-commands/sql-alteraggregate.md), [ALTER FUNCTION](/reference/sql-commands/sql-alterfunction.md), [ALTER PROCEDURE](/reference/sql-commands/sql-alterprocedure.md), [DROP ROUTINE](/reference/sql-commands/sql-droproutine.md)

Note that there is no `CREATE ROUTINE` command.

***

原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/sql-alterroutine.html)（英文原文，待翻譯）


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