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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>52.14. pg_conversion</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-constraint.html" title="52.13. pg_constraint" /><link rel="next" href="catalog-pg-database.html" title="52.15. pg_database" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">52.14. <code class="structname">pg_conversion</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-constraint.html" title="52.13. pg_constraint">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-database.html" title="52.15. pg_database">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-CONVERSION"><div class="titlepage"><div><div><h2 class="title" style="clear: both">52.14. <code class="structname">pg_conversion</code> <a href="#CATALOG-PG-CONVERSION" class="id_link">#</a></h2></div></div></div><a id="id-1.10.4.16.2" class="indexterm"></a><p>
   3    The catalog <code class="structname">pg_conversion</code> describes
   4    encoding conversion functions.  See <a class="xref" href="sql-createconversion.html" title="CREATE CONVERSION"><span class="refentrytitle">CREATE CONVERSION</span></a>
   5    for more information.
   6   </p><div class="table" id="id-1.10.4.16.4"><p class="title"><strong>Table 52.14. <code class="structname">pg_conversion</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_conversion Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
   7        Column Type
   8       </p>
   9       <p>
  10        Description
  11       </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
  12        <code class="structfield">oid</code> <code class="type">oid</code>
  13       </p>
  14       <p>
  15        Row identifier
  16       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  17        <code class="structfield">conname</code> <code class="type">name</code>
  18       </p>
  19       <p>
  20        Conversion name (unique within a namespace)
  21       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  22        <code class="structfield">connamespace</code> <code class="type">oid</code>
  23        (references <a class="link" href="catalog-pg-namespace.html" title="52.32. pg_namespace"><code class="structname">pg_namespace</code></a>.<code class="structfield">oid</code>)
  24       </p>
  25       <p>
  26        The OID of the namespace that contains this conversion
  27       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  28        <code class="structfield">conowner</code> <code class="type">oid</code>
  29        (references <a class="link" href="catalog-pg-authid.html" title="52.8. pg_authid"><code class="structname">pg_authid</code></a>.<code class="structfield">oid</code>)
  30       </p>
  31       <p>
  32        Owner of the conversion
  33       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  34        <code class="structfield">conforencoding</code> <code class="type">int4</code>
  35       </p>
  36       <p>
  37        Source encoding ID (<a class="link" href="functions-info.html#PG-ENCODING-TO-CHAR"><code class="function">pg_encoding_to_char()</code></a>
  38        can translate this number to the encoding name)
  39       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  40        <code class="structfield">contoencoding</code> <code class="type">int4</code>
  41       </p>
  42       <p>
  43        Destination encoding ID (<a class="link" href="functions-info.html#PG-ENCODING-TO-CHAR"><code class="function">pg_encoding_to_char()</code></a>
  44        can translate this number to the encoding name)
  45       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  46        <code class="structfield">conproc</code> <code class="type">regproc</code>
  47        (references <a class="link" href="catalog-pg-proc.html" title="52.39. pg_proc"><code class="structname">pg_proc</code></a>.<code class="structfield">oid</code>)
  48       </p>
  49       <p>
  50        Conversion function
  51       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  52        <code class="structfield">condefault</code> <code class="type">bool</code>
  53       </p>
  54       <p>
  55        True if this is the default conversion
  56       </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-constraint.html" title="52.13. pg_constraint">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-database.html" title="52.15. pg_database">Next</a></td></tr><tr><td width="40%" align="left" valign="top">52.13. <code class="structname">pg_constraint</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"> 52.15. <code class="structname">pg_database</code></td></tr></table></div></body></html>