mirror of
https://github.com/postgres/postgres.git
synced 2025-12-15 02:22:24 +03:00
115 lines
2.8 KiB
Plaintext
115 lines
2.8 KiB
Plaintext
<!--
|
|
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_trigger.sgml,v 1.10 2006/09/16 00:30:16 momjian Exp $
|
|
PostgreSQL documentation
|
|
-->
|
|
|
|
<refentry id="SQL-ALTERTRIGGER">
|
|
<refmeta>
|
|
<refentrytitle id="sql-altertrigger-title">ALTER TRIGGER</refentrytitle>
|
|
<refmiscinfo>SQL - Language Statements</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>ALTER TRIGGER</refname>
|
|
<refpurpose>change the definition of a trigger</refpurpose>
|
|
</refnamediv>
|
|
|
|
<indexterm zone="sql-altertrigger">
|
|
<primary>ALTER TRIGGER</primary>
|
|
</indexterm>
|
|
|
|
<refsynopsisdiv>
|
|
<synopsis>
|
|
ALTER TRIGGER <replaceable class="PARAMETER">name</replaceable> ON <replaceable class="PARAMETER">table</replaceable> RENAME TO <replaceable class="PARAMETER">newname</replaceable>
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>
|
|
<command>ALTER TRIGGER</command> changes properties of an existing
|
|
trigger. The <literal>RENAME</literal> clause changes the name of
|
|
the given trigger without otherwise changing the trigger
|
|
definition.
|
|
</para>
|
|
|
|
<para>
|
|
You must own the table on which the trigger acts to be allowed to change its properties.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Parameters</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><replaceable class="PARAMETER">name</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The name of an existing trigger to alter.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><replaceable class="PARAMETER">table</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The name of the table on which this trigger acts.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><replaceable class="PARAMETER">newname</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The new name for the trigger.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Notes</title>
|
|
|
|
<para>
|
|
The ability to temporarily enable or disable a trigger is provided by
|
|
<xref linkend="SQL-ALTERTABLE" endterm="SQL-ALTERTABLE-TITLE">, not by
|
|
<command>ALTER TRIGGER</>, because <command>ALTER TRIGGER</> has no
|
|
convenient way to express the option of enabling or disabling all of
|
|
a table's triggers at once.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<para>
|
|
To rename an existing trigger:
|
|
<programlisting>
|
|
ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;
|
|
</programlisting>
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Compatibility</title>
|
|
|
|
<para>
|
|
<command>ALTER TRIGGER</command> is a <productname>PostgreSQL</>
|
|
extension of the SQL standard.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
|
|
<simplelist type="inline">
|
|
<member><xref linkend="sql-altertable" endterm="sql-altertable-title"></member>
|
|
</simplelist>
|
|
</refsect1>
|
|
</refentry>
|