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postgres/doc/src/sgml/ref/drop_event_trigger.sgml
Robert Haas 3855968f32 Syntax support and documentation for event triggers.
They don't actually do anything yet; that will get fixed in a
follow-on commit.  But this gets the basic infrastructure in place,
including CREATE/ALTER/DROP EVENT TRIGGER; support for COMMENT,
SECURITY LABEL, and ALTER EXTENSION .. ADD/DROP EVENT TRIGGER;
pg_dump and psql support; and documentation for the anticipated
initial feature set.

Dimitri Fontaine, with review and a bunch of additional hacking by me.
Thom Brown extensively reviewed earlier versions of this patch set,
but there's not a whole lot of that code left in this commit, as it
turns out.
2012-07-18 10:16:16 -04:00

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2.5 KiB
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<!--
doc/src/sgml/ref/drop_event_trigger.sgml
PostgreSQL documentation
-->
<refentry id="SQL-DROPEVENTTRIGGER">
<refmeta>
<refentrytitle>DROP EVENT TRIGGER</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DROP EVENT TRIGGER</refname>
<refpurpose>remove an event trigger</refpurpose>
</refnamediv>
<indexterm zone="sql-dropeventtrigger">
<primary>DROP EVENT TRIGGER</primary>
</indexterm>
<refsynopsisdiv>
<synopsis>
DROP EVENT TRIGGER [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [ CASCADE | RESTRICT ]
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>DROP EVENT TRIGGER</command> removes an existing event trigger.
To execute this command, the current user must be the owner of the event
trigger.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>IF EXISTS</literal></term>
<listitem>
<para>
Do not throw an error if the event trigger does not exist. A notice
is issued in this case.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of the event trigger to remove.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>CASCADE</literal></term>
<listitem>
<para>
Automatically drop objects that depend on the trigger.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>RESTRICT</literal></term>
<listitem>
<para>
Refuse to drop the trigger if any objects depend on it. This is
the default.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="sql-dropeventtrigger-examples">
<title>Examples</title>
<para>
Destroy the trigger <literal>snitch</literal>:
<programlisting>
DROP EVENT TRIGGER snitch;
</programlisting></para>
</refsect1>
<refsect1 id="sql-dropeventtrigger-compatibility">
<title>Compatibility</title>
<para>
There is no <command>DROP EVENT TRIGGER</command> statement in the
SQL standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createeventtrigger"></member>
<member><xref linkend="sql-altereventtrigger"></member>
</simplelist>
</refsect1>
</refentry>