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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>53.24. pg_sequences</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="view-pg-seclabels.html" title="53.23. pg_seclabels" /><link rel="next" href="view-pg-settings.html" title="53.25. pg_settings" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">53.24. <code class="structname">pg_sequences</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="view-pg-seclabels.html" title="53.23. pg_seclabels">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="views.html" title="Chapter 53. System Views">Up</a></td><th width="60%" align="center">Chapter 53. System Views</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="view-pg-settings.html" title="53.25. pg_settings">Next</a></td></tr></table><hr /></div><div class="sect1" id="VIEW-PG-SEQUENCES"><div class="titlepage"><div><div><h2 class="title" style="clear: both">53.24. <code class="structname">pg_sequences</code> <a href="#VIEW-PG-SEQUENCES" class="id_link">#</a></h2></div></div></div><a id="id-1.10.5.28.2" class="indexterm"></a><p>
   3    The view <code class="structname">pg_sequences</code> provides access to
   4    useful information about each sequence in the database.
   5   </p><div class="table" id="id-1.10.5.28.4"><p class="title"><strong>Table 53.24. <code class="structname">pg_sequences</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_sequences Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
   6        Column Type
   7       </p>
   8       <p>
   9        Description
  10       </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
  11        <code class="structfield">schemaname</code> <code class="type">name</code>
  12        (references <a class="link" href="catalog-pg-namespace.html" title="52.32. pg_namespace"><code class="structname">pg_namespace</code></a>.<code class="structfield">nspname</code>)
  13       </p>
  14       <p>
  15        Name of schema containing sequence
  16       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  17        <code class="structfield">sequencename</code> <code class="type">name</code>
  18        (references <a class="link" href="catalog-pg-class.html" title="52.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">relname</code>)
  19       </p>
  20       <p>
  21        Name of sequence
  22       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  23        <code class="structfield">sequenceowner</code> <code class="type">name</code>
  24        (references <a class="link" href="catalog-pg-authid.html" title="52.8. pg_authid"><code class="structname">pg_authid</code></a>.<code class="structfield">rolname</code>)
  25       </p>
  26       <p>
  27        Name of sequence's owner
  28       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  29        <code class="structfield">data_type</code> <code class="type">regtype</code>
  30        (references <a class="link" href="catalog-pg-type.html" title="52.64. pg_type"><code class="structname">pg_type</code></a>.<code class="structfield">oid</code>)
  31       </p>
  32       <p>
  33        Data type of the sequence
  34       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  35        <code class="structfield">start_value</code> <code class="type">int8</code>
  36       </p>
  37       <p>
  38        Start value of the sequence
  39       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  40        <code class="structfield">min_value</code> <code class="type">int8</code>
  41       </p>
  42       <p>
  43        Minimum value of the sequence
  44       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  45        <code class="structfield">max_value</code> <code class="type">int8</code>
  46       </p>
  47       <p>
  48        Maximum value of the sequence
  49       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  50        <code class="structfield">increment_by</code> <code class="type">int8</code>
  51       </p>
  52       <p>
  53        Increment value of the sequence
  54       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  55        <code class="structfield">cycle</code> <code class="type">bool</code>
  56       </p>
  57       <p>
  58        Whether the sequence cycles
  59       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  60        <code class="structfield">cache_size</code> <code class="type">int8</code>
  61       </p>
  62       <p>
  63        Cache size of the sequence
  64       </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
  65        <code class="structfield">last_value</code> <code class="type">int8</code>
  66       </p>
  67       <p>
  68        The last sequence value written to disk.  If caching is used,
  69        this value can be greater than the last value handed out from the
  70        sequence.
  71       </p></td></tr></tbody></table></div></div><br class="table-break" /><p>
  72    The <code class="structfield">last_value</code> column will read as null if any of
  73    the following are true:
  74    </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
  75       The sequence has not been read from yet.
  76      </p></li><li class="listitem"><p>
  77       The current user does not have <code class="literal">USAGE</code> or
  78       <code class="literal">SELECT</code> privilege on the sequence.
  79      </p></li><li class="listitem"><p>
  80       The sequence is unlogged and the server is a standby.
  81      </p></li></ul></div><p>
  82   </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="view-pg-seclabels.html" title="53.23. pg_seclabels">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="views.html" title="Chapter 53. System Views">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="view-pg-settings.html" title="53.25. pg_settings">Next</a></td></tr><tr><td width="40%" align="left" valign="top">53.23. <code class="structname">pg_seclabels</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"> 53.25. <code class="structname">pg_settings</code></td></tr></table></div></body></html>