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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>DROP MATERIALIZED VIEW</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="sql-droplanguage.html" title="DROP LANGUAGE" /><link rel="next" href="sql-dropoperator.html" title="DROP OPERATOR" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DROP MATERIALIZED VIEW</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-droplanguage.html" title="DROP LANGUAGE">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 10.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-dropoperator.html" title="DROP OPERATOR">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-DROPMATERIALIZEDVIEW"><div class="titlepage"></div><a id="id-1.9.3.114.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP MATERIALIZED VIEW</span></h2><p>DROP MATERIALIZED VIEW — remove a materialized view</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">DROP MATERIALIZED VIEW [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]</pre></div><div class="refsect1" id="id-1.9.3.114.5"><h2>Description</h2><p> <code class="command">DROP MATERIALIZED VIEW</code> drops an existing materialized
view. To execute this command you must be the owner of the materialized
view.
</p></div><div class="refsect1" id="id-1.9.3.114.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">IF EXISTS</code></span></dt><dd><p> Do not throw an error if the materialized view does not exist. A notice
is issued in this case.
</p></dd><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p> The name (optionally schema-qualified) of the materialized view to
remove.
</p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p> 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 <a class="xref" href="ddl-depend.html" title="5.13. Dependency Tracking">Section 5.13</a>).
</p></dd><dt><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p> Refuse to drop the materialized view if any objects depend on it. This
is the default.
</p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.114.7"><h2>Examples</h2><p> This command will remove the materialized view called
<code class="literal">order_summary</code>:
</p><pre class="programlisting">DROP MATERIALIZED VIEW order_summary;</pre></div><div class="refsect1" id="id-1.9.3.114.8"><h2>Compatibility</h2><p> <code class="command">DROP MATERIALIZED VIEW</code> is a
<span class="productname">PostgreSQL</span> extension.
</p></div><div class="refsect1" id="id-1.9.3.114.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-creatematerializedview.html" title="CREATE MATERIALIZED VIEW"><span class="refentrytitle">CREATE MATERIALIZED VIEW</span></a>, <a class="xref" href="sql-altermaterializedview.html" title="ALTER MATERIALIZED VIEW"><span class="refentrytitle">ALTER MATERIALIZED VIEW</span></a>, <a class="xref" href="sql-refreshmaterializedview.html" title="REFRESH MATERIALIZED VIEW"><span class="refentrytitle">REFRESH MATERIALIZED VIEW</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-droplanguage.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-dropoperator.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP LANGUAGE </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> DROP OPERATOR</td></tr></table></div></body></html>