> 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-alterlargeobject.md).

# ALTER LARGE OBJECT

### ALTER LARGE OBJECT

ALTER LARGE OBJECT — change the definition of a large object

### Synopsis

```

ALTER LARGE OBJECT large_object_oid OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
```

### Description

`ALTER LARGE OBJECT` changes the definition of a large object.

You must own the large object to use `ALTER LARGE OBJECT`. To alter the owner, you must also be able to `SET ROLE` to the new owning role. (However, a superuser can alter any large object anyway.) Currently, the only functionality is to assign a new owner, so both restrictions always apply.

### Parameters

*`large_object_oid`* : OID of the large object to be altered

*`new_owner`* : The new owner of the large object

### Compatibility

There is no `ALTER LARGE OBJECT` statement in the SQL standard.

### See Also

[Chapter 33](/client-interfaces/largeobjects.md)

***

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


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