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134 lines
3.1 KiB
Plaintext
134 lines
3.1 KiB
Plaintext
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/alter_trigger.sgml,v 1.4 2003/04/15 13:25:08 petere Exp $
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PostgreSQL documentation
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-->
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<refentry id="SQL-ALTERTRIGGER">
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<refmeta>
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<refentrytitle id="sql-altertrigger-title">ALTER TRIGGER</refentrytitle>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>ALTER TRIGGER</refname>
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<refpurpose>change the definition of a trigger</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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ALTER TRIGGER <replaceable class="PARAMETER">trigger</replaceable> ON <replaceable class="PARAMETER">table</replaceable>
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RENAME TO <replaceable class="PARAMETER">newname</replaceable>
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</synopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>ALTER TRIGGER</command> changes properties of an existing
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trigger. The <literal>RENAME</literal> clause changes the name of
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the given trigger without otherwise changing the trigger
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definition.
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</para>
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<para>
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You must own the table on which the trigger acts to be allowed to change its properties.
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</para>
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</refsect1>
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<refsect1>
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<title>Parameter</title>
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<variablelist>
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<varlistentry>
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<term><replaceable class="PARAMETER">trigger</replaceable></term>
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<listitem>
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<para>
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The name of an existing trigger to alter.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="PARAMETER">table</replaceable></term>
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<listitem>
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<para>
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The name of the table on which this trigger acts.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="PARAMETER">newname</replaceable></term>
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<listitem>
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<para>
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The new name for the trigger.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Diagnostics</title>
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<variablelist>
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<varlistentry>
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<term><computeroutput>ALTER TRIGGER</computeroutput></term>
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<listitem>
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<para>
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Message returned if successful.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>ERROR</computeroutput></term>
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<listitem>
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<para>
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If the trigger does not exist, or the new name is a duplicate of
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another existing trigger on the table.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>
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To rename an existing trigger:
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<programlisting>
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ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;
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</programlisting>
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</para>
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</refsect1>
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<refsect1>
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<title>Compatibility</title>
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<para>
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<command>ALTER TRIGGER</command> is a <productname>PostgreSQL</>
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extension of the SQL standard.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:nil
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sgml-shorttag:t
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"../reference.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:"/usr/lib/sgml/catalog"
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sgml-local-ecat-files:nil
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End:
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-->
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