1<!--
2doc/src/sgml/ref/drop_event_trigger.sgml
3PostgreSQL documentation
4-->
5
6<refentry id="SQL-DROPEVENTTRIGGER">
7 <indexterm zone="sql-dropeventtrigger">
8  <primary>DROP EVENT TRIGGER</primary>
9 </indexterm>
10
11 <refmeta>
12  <refentrytitle>DROP EVENT TRIGGER</refentrytitle>
13  <manvolnum>7</manvolnum>
14  <refmiscinfo>SQL - Language Statements</refmiscinfo>
15 </refmeta>
16
17 <refnamediv>
18  <refname>DROP EVENT TRIGGER</refname>
19  <refpurpose>remove an event trigger</refpurpose>
20 </refnamediv>
21
22 <refsynopsisdiv>
23<synopsis>
24DROP EVENT TRIGGER [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [ CASCADE | RESTRICT ]
25</synopsis>
26 </refsynopsisdiv>
27
28 <refsect1>
29  <title>Description</title>
30
31  <para>
32   <command>DROP EVENT TRIGGER</command> removes an existing event trigger.
33   To execute this command, the current user must be the owner of the event
34   trigger.
35  </para>
36 </refsect1>
37
38 <refsect1>
39  <title>Parameters</title>
40
41  <variablelist>
42
43   <varlistentry>
44    <term><literal>IF EXISTS</literal></term>
45    <listitem>
46     <para>
47      Do not throw an error if the event trigger does not exist. A notice
48      is issued in this case.
49     </para>
50    </listitem>
51   </varlistentry>
52
53   <varlistentry>
54    <term><replaceable class="PARAMETER">name</replaceable></term>
55    <listitem>
56     <para>
57      The name of the event trigger to remove.
58     </para>
59    </listitem>
60   </varlistentry>
61
62   <varlistentry>
63    <term><literal>CASCADE</literal></term>
64    <listitem>
65     <para>
66      Automatically drop objects that depend on the trigger,
67      and in turn all objects that depend on those objects
68      (see <xref linkend="ddl-depend">).
69     </para>
70    </listitem>
71   </varlistentry>
72
73   <varlistentry>
74    <term><literal>RESTRICT</literal></term>
75    <listitem>
76     <para>
77      Refuse to drop the trigger if any objects depend on it.  This is
78      the default.
79     </para>
80    </listitem>
81   </varlistentry>
82  </variablelist>
83 </refsect1>
84
85 <refsect1 id="sql-dropeventtrigger-examples">
86  <title>Examples</title>
87
88  <para>
89   Destroy the trigger <literal>snitch</literal>:
90
91<programlisting>
92DROP EVENT TRIGGER snitch;
93</programlisting></para>
94 </refsect1>
95
96 <refsect1 id="sql-dropeventtrigger-compatibility">
97  <title>Compatibility</title>
98
99  <para>
100   There is no <command>DROP EVENT TRIGGER</command> statement in the
101   SQL standard.
102  </para>
103
104 </refsect1>
105
106 <refsect1>
107  <title>See Also</title>
108
109  <simplelist type="inline">
110   <member><xref linkend="sql-createeventtrigger"></member>
111   <member><xref linkend="sql-altereventtrigger"></member>
112  </simplelist>
113 </refsect1>
114
115</refentry>
116