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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>54.2. pg_available_extensions</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="views-overview.html" title="54.1. Overview" /><link rel="next" href="view-pg-available-extension-versions.html" title="54.3. pg_available_extension_versions" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">54.2. <code class="structname">pg_available_extensions</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="views-overview.html" title="54.1. Overview">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="views.html" title="Chapter 54. System Views">Up</a></td><th width="60%" align="center">Chapter 54. System Views</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="view-pg-available-extension-versions.html" title="54.3. pg_available_extension_versions">Next</a></td></tr></table><hr /></div><div class="sect1" id="VIEW-PG-AVAILABLE-EXTENSIONS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">54.2. <code class="structname">pg_available_extensions</code></h2></div></div></div><a id="id-1.10.5.6.2" class="indexterm"></a><p>
The <code class="structname">pg_available_extensions</code> view lists the
extensions that are available for installation.
See also the
<a class="link" href="catalog-pg-extension.html" title="53.22. pg_extension"><code class="structname">pg_extension</code></a>
catalog, which shows the extensions currently installed.
</p><div class="table" id="id-1.10.5.6.4"><p class="title"><strong>Table 54.2. <code class="structname">pg_available_extensions</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_available_extensions Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
Column Type
</p>
<p>
Description
</p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">name</code> <code class="type">name</code>
</p>
<p>
Extension name
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">default_version</code> <code class="type">text</code>
</p>
<p>
Name of default version, or <code class="literal">NULL</code> if none is
specified
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">installed_version</code> <code class="type">text</code>
</p>
<p>
Currently installed version of the extension,
or <code class="literal">NULL</code> if not installed
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">comment</code> <code class="type">text</code>
</p>
<p>
Comment string from the extension's control file
</p></td></tr></tbody></table></div></div><br class="table-break" /><p>
The <code class="structname">pg_available_extensions</code> view is read-only.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="views-overview.html" title="54.1. Overview">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="views.html" title="Chapter 54. System Views">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="view-pg-available-extension-versions.html" title="54.3. pg_available_extension_versions">Next</a></td></tr><tr><td width="40%" align="left" valign="top">54.1. Overview </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 54.3. <code class="structname">pg_available_extension_versions</code></td></tr></table></div></body></html>
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