codekingpro/portable-devtools

1<?xml version="1.0" encoding="UTF-8" standalone="no"?>2<!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 Vsnapshot" /><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 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 16.3 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 /></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">3DROP EXTENSION [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]4</pre></div><div class="refsect1" id="id-1.9.3.111.5"><h2>Description</h2><p>5   <code class="command">DROP EXTENSION</code> removes extensions from the database.6   Dropping an extension causes its member objects, and other explicitly7   dependent routines (see <a class="xref" href="sql-alterroutine.html" title="ALTER ROUTINE"><span class="refentrytitle">ALTER ROUTINE</span></a>,8   the <code class="literal">DEPENDS ON EXTENSION <em class="replaceable"><code>extension_name</code></em>9   </code> action), to be dropped as well.10  </p><p>11   You must own the extension to use <code class="command">DROP EXTENSION</code>.12  </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>13      Do not throw an error if the extension does not exist. A notice is issued14      in this case.15     </p></dd><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>16      The name of an installed extension.17     </p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p>18      Automatically drop objects that depend on the extension,19      and in turn all objects that depend on those objects20      (see <a class="xref" href="ddl-depend.html" title="5.14. Dependency Tracking">Section 5.14</a>).21     </p></dd><dt><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p>22      This option prevents the specified extensions from being dropped if23      other objects, besides these extensions, their members, and their24      explicitly dependent routines, depend on them.  This is the default.25     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.111.7"><h2>Examples</h2><p>26   To remove the extension <code class="literal">hstore</code> from the current27   database:28</p><pre class="programlisting">29DROP EXTENSION hstore;30</pre><p>31   This command will fail if any of <code class="literal">hstore</code>'s objects32   are in use in the database, for example if any tables have columns33   of the <code class="type">hstore</code> type.  Add the <code class="literal">CASCADE</code> option to34   forcibly remove those dependent objects as well.35  </p></div><div class="refsect1" id="id-1.9.3.111.8"><h2>Compatibility</h2><p>36   <code class="command">DROP EXTENSION</code> is a <span class="productname">PostgreSQL</span>37   extension.38  </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 class="navfooter"><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 16.3 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DROP FOREIGN DATA WRAPPER</td></tr></table></div></body></html>