1<!--
2doc/src/sgml/ref/drop_routine.sgml
3PostgreSQL documentation
4-->
5
6<refentry id="sql-droproutine">
7 <indexterm zone="sql-droproutine">
8  <primary>DROP ROUTINE</primary>
9 </indexterm>
10
11 <refmeta>
12  <refentrytitle>DROP ROUTINE</refentrytitle>
13  <manvolnum>7</manvolnum>
14  <refmiscinfo>SQL - Language Statements</refmiscinfo>
15 </refmeta>
16
17 <refnamediv>
18  <refname>DROP ROUTINE</refname>
19  <refpurpose>remove a routine</refpurpose>
20 </refnamediv>
21
22 <refsynopsisdiv>
23<synopsis>
24DROP ROUTINE [ IF EXISTS ] <replaceable class="parameter">name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] [, ...]
25    [ CASCADE | RESTRICT ]
26</synopsis>
27 </refsynopsisdiv>
28
29 <refsect1>
30  <title>Description</title>
31
32  <para>
33   <command>DROP ROUTINE</command> removes the definition of an existing
34   routine, which can be an aggregate function, a normal function, or a
35   procedure.  See
36   under <xref linkend="sql-dropaggregate"/>, <xref linkend="sql-dropfunction"/>,
37   and <xref linkend="sql-dropprocedure"/> for the description of the
38   parameters, more examples, and further details.
39  </para>
40 </refsect1>
41
42 <refsect1 id="sql-droproutine-examples">
43  <title>Examples</title>
44
45  <para>
46   To drop the routine <literal>foo</literal> for type
47   <type>integer</type>:
48<programlisting>
49DROP ROUTINE foo(integer);
50</programlisting>
51   This command will work independent of whether <literal>foo</literal> is an
52   aggregate, function, or procedure.
53  </para>
54 </refsect1>
55
56 <refsect1 id="sql-droproutine-compatibility">
57  <title>Compatibility</title>
58
59  <para>
60   This command conforms to the SQL standard, with
61   these <productname>PostgreSQL</productname> extensions:
62   <itemizedlist>
63    <listitem>
64     <para>The standard only allows one routine to be dropped per command.</para>
65    </listitem>
66    <listitem>
67     <para>The <literal>IF EXISTS</literal> option</para>
68    </listitem>
69    <listitem>
70     <para>The ability to specify argument modes and names</para>
71    </listitem>
72    <listitem>
73     <para>Aggregate functions are an extension.</para>
74    </listitem>
75   </itemizedlist>
76  </para>
77 </refsect1>
78
79 <refsect1>
80  <title>See Also</title>
81
82  <simplelist type="inline">
83   <member><xref linkend="sql-dropaggregate"/></member>
84   <member><xref linkend="sql-dropfunction"/></member>
85   <member><xref linkend="sql-dropprocedure"/></member>
86   <member><xref linkend="sql-alterroutine"/></member>
87  </simplelist>
88
89  <para>
90   Note that there is no <literal>CREATE ROUTINE</literal> command.
91  </para>
92 </refsect1>
93
94</refentry>
95