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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>37.11. collation_character_set_​applicability</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="infoschema-collations.html" title="37.10. collations" /><link rel="next" href="infoschema-column-column-usage.html" title="37.12. column_column_usage" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">37.11. <code class="literal">collation_character_set_​applicability</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="infoschema-collations.html" title="37.10. collations">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="information-schema.html" title="Chapter 37. The Information Schema">Up</a></td><th width="60%" align="center">Chapter 37. The Information Schema</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.6 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="infoschema-column-column-usage.html" title="37.12. column_column_usage">Next</a></td></tr></table><hr /></div><div class="sect1" id="INFOSCHEMA-COLLATION-CHARACTER-SET-APPLICAB"><div class="titlepage"><div><div><h2 class="title" style="clear: both">37.11. <code class="literal">collation_character_set_​applicability</code></h2></div></div></div><p>
   The view <code class="literal">collation_character_set_applicability</code>
   identifies which character set the available collations are
   applicable to.  In PostgreSQL, there is only one character set per
   database (see explanation
   in <a class="xref" href="infoschema-character-sets.html" title="37.7. character_sets">Section 37.7</a>), so this view does
   not provide much useful information.
  </p><div class="table" id="id-1.7.6.15.3"><p class="title"><strong>Table 37.9. <code class="structname">collation_character_set_applicability</code> Columns</strong></p><div class="table-contents"><table class="table" summary="collation_character_set_applicability 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">collation_catalog</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Name of the database containing the collation (always the current database)
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">collation_schema</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Name of the schema containing the collation
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">collation_name</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Name of the default collation
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">character_set_catalog</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Character sets are currently not implemented as schema objects, so this column is null
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">character_set_schema</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Character sets are currently not implemented as schema objects, so this column is null
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">character_set_name</code> <code class="type">sql_identifier</code>
      </p>
      <p>
       Name of the character set
      </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="infoschema-collations.html" title="37.10. collations">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="information-schema.html" title="Chapter 37. The Information Schema">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="infoschema-column-column-usage.html" title="37.12. column_column_usage">Next</a></td></tr><tr><td width="40%" align="left" valign="top">37.10. <code class="literal">collations</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.6 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 37.12. <code class="literal">column_column_usage</code></td></tr></table></div></body></html>