> 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-alteropclass.md).

# ALTER OPERATOR CLASS

### ALTER OPERATOR CLASS

ALTER OPERATOR CLASS — change the definition of an operator class

### Synopsis

```

ALTER OPERATOR CLASS name USING index_method
    RENAME TO new_name

ALTER OPERATOR CLASS name USING index_method
    OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }

ALTER OPERATOR CLASS name USING index_method
    SET SCHEMA new_schema
```

### Description

`ALTER OPERATOR CLASS` changes the definition of an operator class.

You must own the operator class to use `ALTER OPERATOR CLASS`. To alter the owner, you must be able to `SET ROLE` to the new owning role, and that role must have `CREATE` privilege on the operator class's schema. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the operator class. However, a superuser can alter ownership of any operator class anyway.)

### Parameters

*`name`* : The name (optionally schema-qualified) of an existing operator class.

*`index_method`* : The name of the index method this operator class is for.

*`new_name`* : The new name of the operator class.

*`new_owner`* : The new owner of the operator class.

*`new_schema`* : The new schema for the operator class.

### Compatibility

There is no `ALTER OPERATOR CLASS` statement in the SQL standard.

### See Also

[CREATE OPERATOR CLASS](/reference/sql-commands/sql-createopclass.md), [DROP OPERATOR CLASS](/reference/sql-commands/sql-dropopclass.md), [ALTER OPERATOR FAMILY](/reference/sql-commands/sql-alteropfamily.md)

***

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


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