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<!--
doc/src/sgml/ref/alter_large_object.sgml
PostgreSQL documentation
-->
<refentry id="sql-alterlargeobject">
<indexterm zone="sql-alterlargeobject">
<primary>ALTER LARGE OBJECT</primary>
</indexterm>
<refmeta>
<refentrytitle>ALTER LARGE OBJECT</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER LARGE OBJECT</refname>
<refpurpose>change the definition of a large object</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
ALTER LARGE OBJECT <replaceable class="parameter">large_object_oid</replaceable> OWNER TO { <replaceable>new_owner</replaceable> | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER LARGE OBJECT</command> changes the definition of a
large object.
</para>
<para>
You must own the large object to use <command>ALTER LARGE OBJECT</command>.
To alter the owner, you must also be able to <literal>SET ROLE</literal> 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.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable>large_object_oid</replaceable></term>
<listitem>
<para>
OID of the large object to be altered
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>new_owner</replaceable></term>
<listitem>
<para>
The new owner of the large object
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>ALTER LARGE OBJECT</command> statement in the SQL
standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="largeobjects"/></member>
</simplelist>
</refsect1>
</refentry>
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