1<!--
2doc/src/sgml/ref/drop_foreign_data_wrapper.sgml
3PostgreSQL documentation
4-->
5
6<refentry id="sql-dropforeigndatawrapper">
7 <indexterm zone="sql-dropforeigndatawrapper">
8  <primary>DROP FOREIGN DATA WRAPPER</primary>
9 </indexterm>
10
11 <refmeta>
12  <refentrytitle>DROP FOREIGN DATA WRAPPER</refentrytitle>
13  <manvolnum>7</manvolnum>
14  <refmiscinfo>SQL - Language Statements</refmiscinfo>
15 </refmeta>
16
17 <refnamediv>
18  <refname>DROP FOREIGN DATA WRAPPER</refname>
19  <refpurpose>remove a foreign-data wrapper</refpurpose>
20 </refnamediv>
21
22 <refsynopsisdiv>
23<synopsis>
24DROP FOREIGN DATA WRAPPER [ 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 FOREIGN DATA WRAPPER</command> removes an existing
33   foreign-data wrapper.  To execute this command, the current user
34   must be the owner of the foreign-data wrapper.
35  </para>
36 </refsect1>
37
38 <refsect1>
39  <title>Parameters</title>
40
41  <variablelist>
42   <varlistentry>
43    <term><literal>IF EXISTS</literal></term>
44    <listitem>
45     <para>
46      Do not throw an error if the foreign-data wrapper does not
47      exist.  A notice is issued in this case.
48     </para>
49    </listitem>
50   </varlistentry>
51
52   <varlistentry>
53    <term><replaceable class="parameter">name</replaceable></term>
54    <listitem>
55     <para>
56      The name of an existing foreign-data wrapper.
57     </para>
58    </listitem>
59   </varlistentry>
60
61   <varlistentry>
62    <term><literal>CASCADE</literal></term>
63    <listitem>
64     <para>
65      Automatically drop objects that depend on the foreign-data
66      wrapper (such as foreign tables and servers),
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 foreign-data wrapper if any objects depend
78      on it.  This is the default.
79     </para>
80    </listitem>
81   </varlistentry>
82  </variablelist>
83 </refsect1>
84
85 <refsect1>
86  <title>Examples</title>
87
88  <para>
89   Drop the foreign-data wrapper <literal>dbi</literal>:
90<programlisting>
91DROP FOREIGN DATA WRAPPER dbi;
92</programlisting></para>
93 </refsect1>
94
95 <refsect1>
96  <title>Compatibility</title>
97
98  <para>
99   <command>DROP FOREIGN DATA WRAPPER</command> conforms to ISO/IEC
100   9075-9 (SQL/MED).  The <literal>IF EXISTS</literal> clause is
101   a <productname>PostgreSQL</productname> extension.
102  </para>
103 </refsect1>
104
105 <refsect1>
106  <title>See Also</title>
107
108  <simplelist type="inline">
109   <member><xref linkend="sql-createforeigndatawrapper"/></member>
110   <member><xref linkend="sql-alterforeigndatawrapper"/></member>
111  </simplelist>
112 </refsect1>
113
114</refentry>
115