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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>ALTER TRIGGER</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-altertstemplate.html" title="ALTER TEXT SEARCH TEMPLATE" /><link rel="next" href="sql-altertype.html" title="ALTER TYPE" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">ALTER TRIGGER</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-altertstemplate.html" title="ALTER TEXT SEARCH TEMPLATE">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 16.3 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-altertype.html" title="ALTER TYPE">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-ALTERTRIGGER"><div class="titlepage"></div><a id="id-1.9.3.41.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">ALTER TRIGGER</span></h2><p>ALTER TRIGGER — change the definition of a trigger</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">3ALTER TRIGGER <em class="replaceable"><code>name</code></em> ON <em class="replaceable"><code>table_name</code></em> RENAME TO <em class="replaceable"><code>new_name</code></em>4ALTER TRIGGER <em class="replaceable"><code>name</code></em> ON <em class="replaceable"><code>table_name</code></em> [ NO ] DEPENDS ON EXTENSION <em class="replaceable"><code>extension_name</code></em>5</pre></div><div class="refsect1" id="id-1.9.3.41.5"><h2>Description</h2><p>6   <code class="command">ALTER TRIGGER</code> changes properties of an existing7   trigger.8  </p><p>9   The <code class="literal">RENAME</code> clause changes the name of10   the given trigger without otherwise changing the trigger11   definition.12   If the table that the trigger is on is a partitioned table,13   then corresponding clone triggers in the partitions are14   renamed too.15  </p><p>16   The <code class="literal">DEPENDS ON EXTENSION</code> clause marks17   the trigger as dependent on an extension, such that if the extension is18   dropped, the trigger will automatically be dropped as well.19  </p><p>20   You must own the table on which the trigger acts to be allowed to change its properties.21  </p></div><div class="refsect1" id="id-1.9.3.41.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>22      The name of an existing trigger to alter.23     </p></dd><dt><span class="term"><em class="replaceable"><code>table_name</code></em></span></dt><dd><p>24      The name of the table on which this trigger acts.25     </p></dd><dt><span class="term"><em class="replaceable"><code>new_name</code></em></span></dt><dd><p>26      The new name for the trigger.27     </p></dd><dt><span class="term"><em class="replaceable"><code>extension_name</code></em></span></dt><dd><p>28      The name of the extension that the trigger is to depend on (or no longer29      dependent on, if <code class="literal">NO</code> is specified).  A trigger30      that's marked as dependent on an extension is automatically dropped when31      the extension is dropped.32     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.41.7"><h2>Notes</h2><p>33    The ability to temporarily enable or disable a trigger is provided by34    <a class="link" href="sql-altertable.html" title="ALTER TABLE"><code class="command">ALTER TABLE</code></a>, not by35    <code class="command">ALTER TRIGGER</code>, because <code class="command">ALTER TRIGGER</code> has no36    convenient way to express the option of enabling or disabling all of37    a table's triggers at once.38   </p></div><div class="refsect1" id="id-1.9.3.41.8"><h2>Examples</h2><p>39   To rename an existing trigger:40</p><pre class="programlisting">41ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;42</pre><p>43   To mark a trigger as being dependent on an extension:44</p><pre class="programlisting">45ALTER TRIGGER emp_stamp ON emp DEPENDS ON EXTENSION emplib;46</pre></div><div class="refsect1" id="id-1.9.3.41.9"><h2>Compatibility</h2><p>47   <code class="command">ALTER TRIGGER</code> is a <span class="productname">PostgreSQL</span>48   extension of the SQL standard.49  </p></div><div class="refsect1" id="id-1.9.3.41.10"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-altertable.html" title="ALTER TABLE"><span class="refentrytitle">ALTER TABLE</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-altertstemplate.html" title="ALTER TEXT SEARCH TEMPLATE">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-altertype.html" title="ALTER TYPE">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ALTER TEXT SEARCH TEMPLATE </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.3 Documentation">Home</a></td><td width="40%" align="right" valign="top"> ALTER TYPE</td></tr></table></div></body></html>