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<!--
doc/src/sgml/ref/alter_materialized_view.sgml
PostgreSQL documentation
-->
<refentry id="sql-altermaterializedview">
<indexterm zone="sql-altermaterializedview">
<primary>ALTER MATERIALIZED VIEW</primary>
</indexterm>
<refmeta>
<refentrytitle>ALTER MATERIALIZED VIEW</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER MATERIALIZED VIEW</refname>
<refpurpose>change the definition of a materialized view</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
ALTER MATERIALIZED VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
<replaceable class="parameter">action</replaceable> [, ... ]
ALTER MATERIALIZED VIEW <replaceable class="parameter">name</replaceable>
[ NO ] DEPENDS ON EXTENSION <replaceable class="parameter">extension_name</replaceable>
ALTER MATERIALIZED VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
RENAME [ COLUMN ] <replaceable class="parameter">column_name</replaceable> TO <replaceable class="parameter">new_column_name</replaceable>
ALTER MATERIALIZED VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
RENAME TO <replaceable class="parameter">new_name</replaceable>
ALTER MATERIALIZED VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
SET SCHEMA <replaceable class="parameter">new_schema</replaceable>
ALTER MATERIALIZED VIEW ALL IN TABLESPACE <replaceable class="parameter">name</replaceable> [ OWNED BY <replaceable class="parameter">role_name</replaceable> [, ... ] ]
SET TABLESPACE <replaceable class="parameter">new_tablespace</replaceable> [ NOWAIT ]
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
ALTER [ COLUMN ] <replaceable class="parameter">column_name</replaceable> SET STATISTICS <replaceable class="parameter">integer</replaceable>
ALTER [ COLUMN ] <replaceable class="parameter">column_name</replaceable> SET ( <replaceable class="parameter">attribute_option</replaceable> = <replaceable class="parameter">value</replaceable> [, ... ] )
ALTER [ COLUMN ] <replaceable class="parameter">column_name</replaceable> RESET ( <replaceable class="parameter">attribute_option</replaceable> [, ... ] )
ALTER [ COLUMN ] <replaceable class="parameter">column_name</replaceable> SET STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN }
ALTER [ COLUMN ] <replaceable class="parameter">column_name</replaceable> SET COMPRESSION <replaceable class="parameter">compression_method</replaceable>
CLUSTER ON <replaceable class="parameter">index_name</replaceable>
SET WITHOUT CLUSTER
SET ACCESS METHOD <replaceable class="parameter">new_access_method</replaceable>
SET TABLESPACE <replaceable class="parameter">new_tablespace</replaceable>
SET ( <replaceable class="parameter">storage_parameter</replaceable> [= <replaceable class="parameter">value</replaceable>] [, ... ] )
RESET ( <replaceable class="parameter">storage_parameter</replaceable> [, ... ] )
OWNER TO { <replaceable class="parameter">new_owner</replaceable> | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER MATERIALIZED VIEW</command> changes various auxiliary
properties of an existing materialized view.
</para>
<para>
You must own the materialized view to use <command>ALTER MATERIALIZED
VIEW</command>. To change a materialized view's schema, you must also have
<literal>CREATE</literal> privilege on the new schema.
To alter the owner, you must also be a direct or indirect member of the new
owning role, and that role must have <literal>CREATE</literal> privilege on
the materialized view's schema. (These restrictions enforce that altering
the owner doesn't do anything you couldn't do by dropping and recreating the
materialized view. However, a superuser can alter ownership of any view
anyway.)
</para>
<para>
The statement subforms and actions available for
<command>ALTER MATERIALIZED VIEW</command> are a subset of those available
for <command>ALTER TABLE</command>, and have the same meaning when used for
materialized views. See the descriptions for
<link linkend="sql-altertable"><command>ALTER TABLE</command></link>
for details.
</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 materialized view.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">column_name</replaceable></term>
<listitem>
<para>
Name of a new or existing column.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">extension_name</replaceable></term>
<listitem>
<para>
The name of the extension that the materialized view is to depend on (or no longer
dependent on, if <literal>NO</literal> is specified). A materialized view
that's marked as dependent on an extension is automatically dropped when
the extension is dropped.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_column_name</replaceable></term>
<listitem>
<para>
New name for an existing column.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_owner</replaceable></term>
<listitem>
<para>
The user name of the new owner of the materialized view.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_name</replaceable></term>
<listitem>
<para>
The new name for the materialized view.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">new_schema</replaceable></term>
<listitem>
<para>
The new schema for the materialized view.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
To rename the materialized view <literal>foo</literal> to
<literal>bar</literal>:
<programlisting>
ALTER MATERIALIZED VIEW foo RENAME TO bar;
</programlisting></para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>ALTER MATERIALIZED VIEW</command> is a
<productname>PostgreSQL</productname> extension.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-creatematerializedview"/></member>
<member><xref linkend="sql-dropmaterializedview"/></member>
<member><xref linkend="sql-refreshmaterializedview"/></member>
</simplelist>
</refsect1>
</refentry>
|
