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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>53.27. pg_inherits</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="catalog-pg-index.html" title="53.26. pg_index" /><link rel="next" href="catalog-pg-init-privs.html" title="53.28. pg_init_privs" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">53.27. <code class="structname">pg_inherits</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-index.html" title="53.26. pg_index">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 53. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="catalog-pg-init-privs.html" title="53.28. pg_init_privs">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-INHERITS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">53.27. <code class="structname">pg_inherits</code></h2></div></div></div><a id="id-1.10.4.29.2" class="indexterm"></a><p>
The catalog <code class="structname">pg_inherits</code> records information about
table and index inheritance hierarchies. There is one entry for each direct
parent-child table or index relationship in the database. (Indirect
inheritance can be determined by following chains of entries.)
</p><div class="table" id="id-1.10.4.29.4"><p class="title"><strong>Table 53.27. <code class="structname">pg_inherits</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_inherits 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">inhrelid</code> <code class="type">oid</code>
(references <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">oid</code>)
</p>
<p>
The OID of the child table or index
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">inhparent</code> <code class="type">oid</code>
(references <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">oid</code>)
</p>
<p>
The OID of the parent table or index
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">inhseqno</code> <code class="type">int4</code>
</p>
<p>
If there is more than one direct parent for a child table (multiple
inheritance), this number tells the order in which the
inherited columns are to be arranged. The count starts at 1.
</p>
<p>
Indexes cannot have multiple inheritance, since they can only inherit
when using declarative partitioning.
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">inhdetachpending</code> <code class="type">bool</code>
</p>
<p>
<code class="literal">true</code> for a partition that is in the process of
being detached; <code class="literal">false</code> otherwise.
</p></td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="catalog-pg-index.html" title="53.26. pg_index">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-init-privs.html" title="53.28. pg_init_privs">Next</a></td></tr><tr><td width="40%" align="left" valign="top">53.26. <code class="structname">pg_index</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 53.28. <code class="structname">pg_init_privs</code></td></tr></table></div></body></html>
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