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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>CREATE USER MAPPING</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="sql-createuser.html" title="CREATE USER" /><link rel="next" href="sql-createview.html" title="CREATE VIEW" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">CREATE USER MAPPING</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-createuser.html" title="CREATE USER">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-createview.html" title="CREATE VIEW">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-CREATEUSERMAPPING"><div class="titlepage"></div><a id="id-1.9.3.96.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">CREATE USER MAPPING</span></h2><p>CREATE USER MAPPING — define a new mapping of a user to a foreign server</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
CREATE USER MAPPING [ IF NOT EXISTS ] FOR { <em class="replaceable"><code>user_name</code></em> | USER | CURRENT_USER | PUBLIC }
SERVER <em class="replaceable"><code>server_name</code></em>
[ OPTIONS ( <em class="replaceable"><code>option</code></em> '<em class="replaceable"><code>value</code></em>' [ , ... ] ) ]
</pre></div><div class="refsect1" id="id-1.9.3.96.5"><h2>Description</h2><p>
<code class="command">CREATE USER MAPPING</code> defines a mapping of a user
to a foreign server. A user mapping typically encapsulates
connection information that a foreign-data wrapper uses together
with the information encapsulated by a foreign server to access an
external data resource.
</p><p>
The owner of a foreign server can create user mappings for that
server for any user. Also, a user can create a user mapping for
their own user name if <code class="literal">USAGE</code> privilege on the server has
been granted to the user.
</p></div><div class="refsect1" id="id-1.9.3.96.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">IF NOT EXISTS</code></span></dt><dd><p>
Do not throw an error if a mapping of the given user to the given foreign
server already exists. A notice is issued in this case. Note that there
is no guarantee that the existing user mapping is anything like the one
that would have been created.
</p></dd><dt><span class="term"><em class="replaceable"><code>user_name</code></em></span></dt><dd><p>
The name of an existing user that is mapped to foreign server.
<code class="literal">CURRENT_USER</code> and <code class="literal">USER</code> match the name of
the current user. When <code class="literal">PUBLIC</code> is specified, a
so-called public mapping is created that is used when no
user-specific mapping is applicable.
</p></dd><dt><span class="term"><em class="replaceable"><code>server_name</code></em></span></dt><dd><p>
The name of an existing server for which the user mapping is
to be created.
</p></dd><dt><span class="term"><code class="literal">OPTIONS ( <em class="replaceable"><code>option</code></em> '<em class="replaceable"><code>value</code></em>' [, ... ] )</code></span></dt><dd><p>
This clause specifies the options of the user mapping. The
options typically define the actual user name and password of
the mapping. Option names must be unique. The allowed option
names and values are specific to the server's foreign-data wrapper.
</p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.96.7"><h2>Examples</h2><p>
Create a user mapping for user <code class="literal">bob</code>, server <code class="literal">foo</code>:
</p><pre class="programlisting">
CREATE USER MAPPING FOR bob SERVER foo OPTIONS (user 'bob', password 'secret');
</pre></div><div class="refsect1" id="id-1.9.3.96.8"><h2>Compatibility</h2><p>
<code class="command">CREATE USER MAPPING</code> conforms to ISO/IEC 9075-9 (SQL/MED).
</p></div><div class="refsect1" id="id-1.9.3.96.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-alterusermapping.html" title="ALTER USER MAPPING"><span class="refentrytitle">ALTER USER MAPPING</span></a>, <a class="xref" href="sql-dropusermapping.html" title="DROP USER MAPPING"><span class="refentrytitle">DROP USER MAPPING</span></a>, <a class="xref" href="sql-createforeigndatawrapper.html" title="CREATE FOREIGN DATA WRAPPER"><span class="refentrytitle">CREATE FOREIGN DATA WRAPPER</span></a>, <a class="xref" href="sql-createserver.html" title="CREATE SERVER"><span class="refentrytitle">CREATE SERVER</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-createuser.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-createview.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">CREATE USER </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> CREATE VIEW</td></tr></table></div></body></html>
