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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 EXTENSION</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="sql-dropeventtrigger.html" title="DROP EVENT TRIGGER" /><link rel="next" href="sql-dropforeigndatawrapper.html" title="DROP FOREIGN DATA WRAPPER" /></head><body id="docContent" class="container-fluid col-10"><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DROP EXTENSION</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-dropeventtrigger.html" title="DROP EVENT TRIGGER">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 13.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-dropforeigndatawrapper.html" title="DROP FOREIGN DATA WRAPPER">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-DROPEXTENSION"><div class="titlepage"></div><a id="id-1.9.3.111.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP EXTENSION</span></h2><p>DROP EXTENSION — remove an extension</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+DROP EXTENSION [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]
+</pre></div><div class="refsect1" id="id-1.9.3.111.5"><h2>Description</h2><p>
+   <code class="command">DROP EXTENSION</code> removes extensions from the database.
+   Dropping an extension causes its component objects to be dropped as well.
+  </p><p>
+   You must own the extension to use <code class="command">DROP EXTENSION</code>.
+  </p></div><div class="refsect1" id="id-1.9.3.111.6"><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 extension 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 of an installed extension.
+     </p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p>
+      Automatically drop objects that depend on the extension,
+      and in turn all objects that depend on those objects
+      (see <a class="xref" href="ddl-depend.html" title="5.14. Dependency Tracking">Section 5.14</a>).
+     </p></dd><dt><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p>
+      Refuse to drop the extension if any objects depend on it (other than
+      its own member objects and other extensions listed in the same
+      <code class="command">DROP</code> command).  This is the default.
+     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.111.7"><h2>Examples</h2><p>
+   To remove the extension <code class="literal">hstore</code> from the current
+   database:
+</p><pre class="programlisting">
+DROP EXTENSION hstore;
+</pre><p>
+   This command will fail if any of <code class="literal">hstore</code>'s objects
+   are in use in the database, for example if any tables have columns
+   of the <code class="type">hstore</code> type.  Add the <code class="literal">CASCADE</code> option to
+   forcibly remove those dependent objects as well.
+  </p></div><div class="refsect1" id="id-1.9.3.111.8"><h2>Compatibility</h2><p>
+   <code class="command">DROP EXTENSION</code> is a <span class="productname">PostgreSQL</span>
+   extension.
+  </p></div><div class="refsect1" id="id-1.9.3.111.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-createextension.html" title="CREATE EXTENSION"><span class="refentrytitle">CREATE EXTENSION</span></a>, <a class="xref" href="sql-alterextension.html" title="ALTER EXTENSION"><span class="refentrytitle">ALTER EXTENSION</span></a></span></div></div><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-dropeventtrigger.html" title="DROP EVENT TRIGGER">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-dropforeigndatawrapper.html" title="DROP FOREIGN DATA WRAPPER">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP EVENT TRIGGER </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 13.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DROP FOREIGN DATA WRAPPER</td></tr></table></div></body></html>
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