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<!--
doc/src/sgml/ref/drop_materialized_view.sgml
PostgreSQL documentation
-->
<refentry id="sql-dropmaterializedview">
<indexterm zone="sql-dropmaterializedview">
<primary>DROP MATERIALIZED VIEW</primary>
</indexterm>
<refmeta>
<refentrytitle>DROP MATERIALIZED VIEW</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DROP MATERIALIZED VIEW</refname>
<refpurpose>remove a materialized view</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
DROP MATERIALIZED VIEW [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>DROP MATERIALIZED VIEW</command> drops an existing materialized
view. To execute this command you must be the owner of the materialized
view.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>IF EXISTS</literal></term>
<listitem>
<para>
Do not throw an error if the materialized view does not exist. A notice
is issued in this case.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name (optionally schema-qualified) of the materialized view to
remove.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>CASCADE</literal></term>
<listitem>
<para>
Automatically drop objects that depend on the materialized view (such as
other materialized views, or regular views),
and in turn all objects that depend on those objects
(see <xref linkend="ddl-depend"/>).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>RESTRICT</literal></term>
<listitem>
<para>
Refuse to drop the materialized view if any objects depend on it. This
is the default.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
This command will remove the materialized view called
<literal>order_summary</literal>:
<programlisting>
DROP MATERIALIZED VIEW order_summary;
</programlisting></para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>DROP 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-altermaterializedview"/></member>
<member><xref linkend="sql-refreshmaterializedview"/></member>
</simplelist>
</refsect1>
</refentry>
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