begriffs open source - ai-pg/blob - full-docs/src/sgml/html/sql-dropsequence.html

   1 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
   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>DROP SEQUENCE</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="sql-dropschema.html" title="DROP SCHEMA" /><link rel="next" href="sql-dropserver.html" title="DROP SERVER" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DROP SEQUENCE</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-dropschema.html" title="DROP SCHEMA">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</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="sql-dropserver.html" title="DROP SERVER">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-DROPSEQUENCE"><div class="titlepage"></div><a id="id-1.9.3.130.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP SEQUENCE</span></h2><p>DROP SEQUENCE — remove a sequence</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
   3 DROP SEQUENCE [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]
   4 </pre></div><div class="refsect1" id="id-1.9.3.130.5"><h2>Description</h2><p>
   5    <code class="command">DROP SEQUENCE</code> removes sequence number
   6    generators. A sequence can only be dropped by its owner or a superuser.
   7   </p></div><div class="refsect1" id="id-1.9.3.130.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">IF EXISTS</code></span></dt><dd><p>
   8       Do not throw an error if the sequence does not exist. A notice is issued
   9       in this case.
  10      </p></dd><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>
  11       The name (optionally schema-qualified) of a sequence.
  12      </p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p>
  13       Automatically drop objects that depend on the sequence,
  14       and in turn all objects that depend on those objects
  15       (see <a class="xref" href="ddl-depend.html" title="5.15. Dependency Tracking">Section 5.15</a>).
  16      </p></dd><dt><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p>
  17       Refuse to drop the sequence if any objects depend on it.  This
  18       is the default.
  19      </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.130.7"><h2>Examples</h2><p>
  20    To remove the sequence <code class="literal">serial</code>:
  21
  22 </p><pre class="programlisting">
  23 DROP SEQUENCE serial;
  24 </pre></div><div class="refsect1" id="id-1.9.3.130.8"><h2>Compatibility</h2><p>
  25    <code class="command">DROP SEQUENCE</code> conforms to the <acronym class="acronym">SQL</acronym>
  26    standard, except that the standard only allows one
  27    sequence to be dropped per command, and apart from the
  28    <code class="literal">IF EXISTS</code> option, which is a <span class="productname">PostgreSQL</span>
  29    extension.
  30   </p></div><div class="refsect1" id="id-1.9.3.130.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-createsequence.html" title="CREATE SEQUENCE"><span class="refentrytitle">CREATE SEQUENCE</span></a>, <a class="xref" href="sql-altersequence.html" title="ALTER SEQUENCE"><span class="refentrytitle">ALTER SEQUENCE</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-dropschema.html" title="DROP SCHEMA">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-dropserver.html" title="DROP SERVER">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP SCHEMA </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"> DROP SERVER</td></tr></table></div></body></html>