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postgres/doc/src/sgml/ref/drop_event_trigger.sgml
Peter Eisentraut 3c49c6facb Convert documentation to DocBook XML
Since some preparation work had already been done, the only source
changes left were changing empty-element tags like <xref linkend="foo">
to <xref linkend="foo"/>, and changing the DOCTYPE.

The source files are still named *.sgml, but they are actually XML files
now.  Renaming could be considered later.

In the build system, the intermediate step to convert from SGML to XML
is removed.  Everything is build straight from the source files again.
The OpenSP (or the old SP) package is no longer needed.

The documentation toolchain instructions are updated and are much
simpler now.

Peter Eisentraut, Alexander Lakhin, Jürgen Purtz
2017-11-23 09:44:28 -05:00

116 lines
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<!--
doc/src/sgml/ref/drop_event_trigger.sgml
PostgreSQL documentation
-->
<refentry id="sql-dropeventtrigger">
<indexterm zone="sql-dropeventtrigger">
<primary>DROP EVENT TRIGGER</primary>
</indexterm>
<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>
<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,
and in turn all objects that depend on those objects
(see <xref linkend="ddl-depend"/>).
</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>