begriffs open source - ai-pg/blob - full-docs/src/sgml/html/catalog-pg-foreign-table.html

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   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>52.25. pg_foreign_table</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-foreign-server.html" title="52.24. pg_foreign_server" /><link rel="next" href="catalog-pg-index.html" title="52.26. pg_index" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">52.25. <code class="structname">pg_foreign_table</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-foreign-server.html" title="52.24. pg_foreign_server">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 52. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 52. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="catalog-pg-index.html" title="52.26. pg_index">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-FOREIGN-TABLE"><div class="titlepage"><div><div><h2 class="title" style="clear: both">52.25. <code class="structname">pg_foreign_table</code> <a href="#CATALOG-PG-FOREIGN-TABLE" class="id_link">#</a></h2></div></div></div><a id="id-1.10.4.27.2" class="indexterm"></a><p>
   3    The catalog <code class="structname">pg_foreign_table</code> contains
   4    auxiliary information about foreign tables.  A foreign table is
   5    primarily represented by a
   6    <a class="link" href="catalog-pg-class.html" title="52.11. pg_class"><code class="structname">pg_class</code></a>
   7    entry, just like a regular table.  Its <code class="structname">pg_foreign_table</code>
   8    entry contains the information that is pertinent only to foreign tables
   9    and not any other kind of relation.
  10   </p><div class="table" id="id-1.10.4.27.4"><p class="title"><strong>Table 52.25. <code class="structname">pg_foreign_table</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_foreign_table Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
  11        Column Type
  12       </p>
  13       <p>
  14        Description
  15       </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
  16        <code class="structfield">ftrelid</code> <code class="type">oid</code>
  17        (references <a class="link" href="catalog-pg-class.html" title="52.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">oid</code>)
  18       </p>
  19       <p>
  20        The OID of the <a class="link" href="catalog-pg-class.html" title="52.11. pg_class"><code class="structname">pg_class</code></a> entry for this foreign table
  21       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  22        <code class="structfield">ftserver</code> <code class="type">oid</code>
  23        (references <a class="link" href="catalog-pg-foreign-server.html" title="52.24. pg_foreign_server"><code class="structname">pg_foreign_server</code></a>.<code class="structfield">oid</code>)
  24       </p>
  25       <p>
  26        OID of the foreign server for this foreign table
  27       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  28        <code class="structfield">ftoptions</code> <code class="type">text[]</code>
  29       </p>
  30       <p>
  31        Foreign table options, as <span class="quote">“<span class="quote">keyword=value</span>”</span> strings
  32       </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-foreign-server.html" title="52.24. pg_foreign_server">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html" title="Chapter 52. System Catalogs">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-index.html" title="52.26. pg_index">Next</a></td></tr><tr><td width="40%" align="left" valign="top">52.24. <code class="structname">pg_foreign_server</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 52.26. <code class="structname">pg_index</code></td></tr></table></div></body></html>