begriffs open source - ai-pg/blob - full-docs/src/sgml/html/sql-abort.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>ABORT</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-commands.html" title="SQL Commands" /><link rel="next" href="sql-alteraggregate.html" title="ALTER AGGREGATE" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">ABORT</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-commands.html" title="SQL Commands">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-alteraggregate.html" title="ALTER AGGREGATE">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-ABORT"><div class="titlepage"></div><a id="id-1.9.3.3.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">ABORT</span></h2><p>ABORT — abort the current transaction</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
   3 ABORT [ WORK | TRANSACTION ] [ AND [ NO ] CHAIN ]
   4 </pre></div><div class="refsect1" id="id-1.9.3.3.5"><h2>Description</h2><p>
   5    <code class="command">ABORT</code> rolls back the current transaction and causes
   6    all the updates made by the transaction to be discarded.
   7    This command is identical
   8    in behavior to the standard <acronym class="acronym">SQL</acronym> command
   9    <a class="link" href="sql-rollback.html" title="ROLLBACK"><code class="command">ROLLBACK</code></a>,
  10    and is present only for historical reasons.
  11   </p></div><div class="refsect1" id="id-1.9.3.3.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">WORK</code><br /></span><span class="term"><code class="literal">TRANSACTION</code></span></dt><dd><p>
  12       Optional key words. They have no effect.
  13      </p></dd><dt><span class="term"><code class="literal">AND CHAIN</code></span></dt><dd><p>
  14       If <code class="literal">AND CHAIN</code> is specified, a new transaction is
  15       immediately started with the same transaction characteristics (see <a class="link" href="sql-set-transaction.html" title="SET TRANSACTION"><code class="command">SET TRANSACTION</code></a>) as the just finished one.  Otherwise,
  16       no new transaction is started.
  17      </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.3.7"><h2>Notes</h2><p>
  18    Use <a class="link" href="sql-commit.html" title="COMMIT"><code class="command">COMMIT</code></a> to
  19    successfully terminate a transaction.
  20   </p><p>
  21    Issuing <code class="command">ABORT</code> outside of a transaction block
  22    emits a warning and otherwise has no effect.
  23   </p></div><div class="refsect1" id="id-1.9.3.3.8"><h2>Examples</h2><p>
  24    To abort all changes:
  25 </p><pre class="programlisting">
  26 ABORT;
  27 </pre></div><div class="refsect1" id="id-1.9.3.3.9"><h2>Compatibility</h2><p>
  28    This command is a <span class="productname">PostgreSQL</span> extension
  29    present for historical reasons. <code class="command">ROLLBACK</code> is the
  30    equivalent standard SQL command.
  31   </p></div><div class="refsect1" id="id-1.9.3.3.10"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-begin.html" title="BEGIN"><span class="refentrytitle">BEGIN</span></a>, <a class="xref" href="sql-commit.html" title="COMMIT"><span class="refentrytitle">COMMIT</span></a>, <a class="xref" href="sql-rollback.html" title="ROLLBACK"><span class="refentrytitle">ROLLBACK</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-commands.html" title="SQL Commands">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-alteraggregate.html" title="ALTER AGGREGATE">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SQL Commands </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"> ALTER AGGREGATE</td></tr></table></div></body></html>