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<!--
doc/src/sgml/ref/alter_opclass.sgml
PostgreSQL documentation
-->
<refentry id="sql-alteropclass">
<indexterm zone="sql-alteropclass">
<primary>ALTER OPERATOR CLASS</primary>
</indexterm>
<refmeta>
<refentrytitle>ALTER OPERATOR CLASS</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER OPERATOR CLASS</refname>
<refpurpose>change the definition of an operator class</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
ALTER OPERATOR CLASS <replaceable>name</replaceable> USING <replaceable class="parameter">index_method</replaceable>
RENAME TO <replaceable>new_name</replaceable>
ALTER OPERATOR CLASS <replaceable>name</replaceable> USING <replaceable class="parameter">index_method</replaceable>
OWNER TO { <replaceable>new_owner</replaceable> | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER OPERATOR CLASS <replaceable>name</replaceable> USING <replaceable class="parameter">index_method</replaceable>
SET SCHEMA <replaceable>new_schema</replaceable>
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER OPERATOR CLASS</command> changes the definition of
an operator class.
</para>
<para>
You must own the operator class to use <command>ALTER OPERATOR CLASS</command>.
To alter the owner, you must be able to <literal>SET ROLE</literal> to the
new owning role, and that role must have <literal>CREATE</literal>
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.)
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name (optionally schema-qualified) of an existing operator
class.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">index_method</replaceable></term>
<listitem>
<para>
The name of the index method this operator class is for.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_name</replaceable></term>
<listitem>
<para>
The new name of the operator class.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_owner</replaceable></term>
<listitem>
<para>
The new owner of the operator class.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_schema</replaceable></term>
<listitem>
<para>
The new schema for the operator class.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>ALTER OPERATOR CLASS</command> statement in
the SQL standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createopclass"/></member>
<member><xref linkend="sql-dropopclass"/></member>
<member><xref linkend="sql-alteropfamily"/></member>
</simplelist>
</refsect1>
</refentry>
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