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<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_user_mapping.sgml,v 1.4 2009/02/27 07:20:00 petere Exp $
PostgreSQL documentation
-->
<refentry id="SQL-CREATEUSERMAPPING">
<refmeta>
<refentrytitle id="sql-createusermapping-title">CREATE USER MAPPING</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>CREATE USER MAPPING</refname>
<refpurpose>define a new mapping of a user to a foreign server</refpurpose>
</refnamediv>
<indexterm zone="sql-createusermapping">
<primary>CREATE USER MAPPING</primary>
</indexterm>
<refsynopsisdiv>
<synopsis>
CREATE USER MAPPING FOR { <replaceable class="parameter">username</replaceable> | USER | CURRENT_USER | PUBLIC }
SERVER <replaceable class="parameter">servername</replaceable>
[ OPTIONS ( <replaceable class="PARAMETER">option</replaceable> '<replaceable class="PARAMETER">value</replaceable>' [ , ... ] ) ]
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>CREATE USER MAPPING</command> defines a mapping of a user
to a foreign server.
</para>
<para>
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
his own user name if <literal>USAGE</> privilege on the server has
been granted to the user.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">username</replaceable></term>
<listitem>
<para>
The name of an existing user that is mapped to foreign server.
<literal>CURRENT_USER</> and <literal>USER</> match the name of
the current user. <literal>PUBLIC</> is used to match all
present and future user names in the system.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">servername</replaceable></term>
<listitem>
<para>
The name of an existing server for which the user mapping is
to be created.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>OPTIONS ( <replaceable class="PARAMETER">option</replaceable> '<replaceable class="PARAMETER">value</replaceable>' [, ... ] )</literal></term>
<listitem>
<para>
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.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Create a user mapping for user <literal>bob</>, server <literal>foo</>:
<programlisting>
CREATE USER MAPPING FOR bob SERVER foo OPTIONS (user 'bob', password 'secret');
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>CREATE USER MAPPING</command> conforms to ISO/IEC 9075-9 (SQL/MED).
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-alterusermapping" endterm="sql-alterusermapping-title"></member>
<member><xref linkend="sql-dropusermapping" endterm="sql-dropusermapping-title"></member>
<member><xref linkend="sql-createforeigndatawrapper" endterm="sql-createforeigndatawrapper-title"></member>
<member><xref linkend="sql-createserver" endterm="sql-createserver-title"></member>
</simplelist>
</refsect1>
</refentry>
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