--- /dev/null
+<!--
+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>
+ <refsynopsisdiv>
+ <refsynopsisdivinfo>
+ <date>2002-04-19</date>
+ </refsynopsisdivinfo>
+ <synopsis>
+ALTER TRIGGER <replaceable class="PARAMETER">trigger</replaceable> ON <replaceable class="PARAMETER">table</replaceable>
+ RENAME TO <replaceable class="PARAMETER">newname</replaceable>
+ </synopsis>
+
+ <refsect2 id="R2-SQL-ALTERTRIGGER-1">
+ <refsect2info>
+ <date>2002-04-19</date>
+ </refsect2info>
+ <title>
+ Inputs
+ </title>
+ <para>
+ <variablelist>
+
+ <varlistentry>
+ <term><replaceable class="PARAMETER"> trigger </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>
+ New name for the existing trigger.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+ </para>
+ </refsect2>
+
+ <refsect2 id="R2-SQL-ALTERTRIGGER-2">
+ <refsect2info>
+ <date>2002-04-19</date>
+ </refsect2info>
+ <title>
+ Outputs
+ </title>
+ <para>
+
+ <variablelist>
+ <varlistentry>
+ <term><computeroutput>ALTER</computeroutput></term>
+ <listitem>
+ <para>
+ Message returned from trigger renaming.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><computeroutput>ERROR</computeroutput></term>
+ <listitem>
+ <para>
+ Message returned if trigger is not available, or new name is a duplicate of another existing trigger on the table.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+ </refsect2>
+ </refsynopsisdiv>
+
+ <refsect1 id="R1-SQL-ALTERTRIGGER-1">
+ <refsect1info>
+ <date>2002-04-19</date>
+ </refsect1info>
+ <title>
+ Description
+ </title>
+ <para>
+ <command>ALTER TRIGGER</command> changes the definition of an existing trigger.
+ The <literal>RENAME</literal> clause causes the name of a trigger on the given table
+ to change without otherwise changing the trigger definition.
+ </para>
+
+ <para>
+ You must own the table on which the trigger acts in order to change its properties.
+ </para>
+
+ <refsect2 id="R2-SQL-ALTERTRIGGER-3">
+ <refsect2info>
+ <date>2002-04-19</date>
+ </refsect2info>
+ <title>
+ Notes
+ </title>
+ <para>
+ Refer to <command>CREATE TRIGGER</command> for a further description
+ of valid arguments.
+ </para>
+ </refsect2>
+ </refsect1>
+
+ <refsect1 id="R1-SQL-ALTERTRIGGER-2">
+ <title>
+ Usage
+ </title>
+ <para>
+ To rename an existing trigger:
+ <programlisting>
+ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;
+ </programlisting>
+ </para>
+ </refsect1>
+
+ <refsect1 id="R1-SQL-ALTERTRIGGER-3">
+ <title>
+ Compatibility
+ </title>
+
+ <refsect2 id="R2-SQL-ALTERTRIGGER-4">
+ <refsect2info>
+ <date>2002-04-19</date>
+ </refsect2info>
+ <title>SQL92</title>
+ <para>
+ The clause to rename triggers is a
+ <productname>PostgreSQL</productname> extension from SQL92.
+ </para>
+ </refsect2>
+ </refsect1>
+</refentry>
+
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