1<!--
2doc/src/sgml/ref/drop_foreign_table.sgml
3PostgreSQL documentation
4-->
5
6<refentry id="sql-dropforeigntable">
7 <indexterm zone="sql-dropforeigntable">
8  <primary>DROP FOREIGN TABLE</primary>
9 </indexterm>
10
11 <refmeta>
12  <refentrytitle>DROP FOREIGN TABLE</refentrytitle>
13  <manvolnum>7</manvolnum>
14  <refmiscinfo>SQL - Language Statements</refmiscinfo>
15 </refmeta>
16
17 <refnamediv>
18  <refname>DROP FOREIGN TABLE</refname>
19  <refpurpose>remove a foreign table</refpurpose>
20 </refnamediv>
21
22 <refsynopsisdiv>
23<synopsis>
24DROP FOREIGN TABLE [ 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 TABLE</command> removes a foreign table.
33   Only the owner of a foreign table can remove it.
34  </para>
35 </refsect1>
36
37 <refsect1>
38  <title>Parameters</title>
39
40  <variablelist>
41   <varlistentry>
42    <term><literal>IF EXISTS</literal></term>
43    <listitem>
44     <para>
45      Do not throw an error if the foreign table does not exist.
46      A notice is issued in this case.
47     </para>
48    </listitem>
49   </varlistentry>
50
51   <varlistentry>
52    <term><replaceable class="parameter">name</replaceable></term>
53    <listitem>
54     <para>
55      The name (optionally schema-qualified) of the foreign table to drop.
56     </para>
57    </listitem>
58   </varlistentry>
59
60   <varlistentry>
61    <term><literal>CASCADE</literal></term>
62    <listitem>
63     <para>
64      Automatically drop objects that depend on the foreign table (such as
65      views), and in turn all objects that depend on those objects
66      (see <xref linkend="ddl-depend"/>).
67     </para>
68    </listitem>
69   </varlistentry>
70
71   <varlistentry>
72    <term><literal>RESTRICT</literal></term>
73    <listitem>
74     <para>
75      Refuse to drop the foreign table if any objects depend on it.  This is
76      the default.
77     </para>
78    </listitem>
79   </varlistentry>
80  </variablelist>
81 </refsect1>
82
83 <refsect1>
84  <title>Examples</title>
85
86  <para>
87   To destroy two foreign tables, <literal>films</literal> and
88   <literal>distributors</literal>:
89
90<programlisting>
91DROP FOREIGN TABLE films, distributors;
92</programlisting></para>
93 </refsect1>
94
95 <refsect1>
96  <title>Compatibility</title>
97
98  <para>
99   This command conforms to ISO/IEC 9075-9 (SQL/MED), except that the
100   standard only allows one foreign table to be dropped per command, and apart
101   from the <literal>IF EXISTS</literal> option, which is a <productname>PostgreSQL</productname>
102   extension.
103  </para>
104 </refsect1>
105
106 <refsect1>
107  <title>See Also</title>
108
109  <simplelist type="inline">
110   <member><xref linkend="sql-alterforeigntable"/></member>
111   <member><xref linkend="sql-createforeigntable"/></member>
112  </simplelist>
113 </refsect1>
114
115</refentry>
116