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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ALTER USER MAPPING</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="ALTER USER" HREF="sql-alteruser.html"><LINK REL="NEXT" TITLE="ALTER VIEW" HREF="sql-alterview.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="REFENTRY" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="ALTER USER" HREF="sql-alteruser.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="ALTER VIEW" HREF="sql-alterview.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-ALTERUSERMAPPING" ></A >ALTER USER MAPPING</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN66086" ></A ><H2 >Name</H2 >ALTER USER MAPPING -- change the definition of a user mapping</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN66091" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >ALTER USER MAPPING FOR { <TT CLASS="REPLACEABLE" ><I >user_name</I ></TT > | USER | CURRENT_USER | PUBLIC } SERVER <TT CLASS="REPLACEABLE" ><I >server_name</I ></TT > OPTIONS ( [ ADD | SET | DROP ] <TT CLASS="REPLACEABLE" ><I >option</I ></TT > ['<TT CLASS="REPLACEABLE" ><I >value</I ></TT >'] [, ... ] )</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN66097" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >ALTER USER MAPPING</TT > changes the definition of a user mapping. </P ><P > The owner of a foreign server can alter user mappings for that server for any user. Also, a user can alter a user mapping for his own user name if <TT CLASS="LITERAL" >USAGE</TT > privilege on the server has been granted to the user. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN66103" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >user_name</I ></TT ></DT ><DD ><P > User name of the mapping. <TT CLASS="LITERAL" >CURRENT_USER</TT > and <TT CLASS="LITERAL" >USER</TT > match the name of the current user. <TT CLASS="LITERAL" >PUBLIC</TT > is used to match all present and future user names in the system. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >server_name</I ></TT ></DT ><DD ><P > Server name of the user mapping. </P ></DD ><DT ><TT CLASS="LITERAL" >OPTIONS ( [ ADD | SET | DROP ] <TT CLASS="REPLACEABLE" ><I >option</I ></TT > ['<TT CLASS="REPLACEABLE" ><I >value</I ></TT >'] [, ... ] )</TT ></DT ><DD ><P > Change options for the user mapping. The new options override any previously specified options. <TT CLASS="LITERAL" >ADD</TT >, <TT CLASS="LITERAL" >SET</TT >, and <TT CLASS="LITERAL" >DROP</TT > specify the action to be performed. <TT CLASS="LITERAL" >ADD</TT > is assumed if no operation is explicitly specified. Option names must be unique; options are also validated by the server's foreign-data wrapper. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN66130" ></A ><H2 >Examples</H2 ><P > Change the password for user mapping <TT CLASS="LITERAL" >bob</TT >, server <TT CLASS="LITERAL" >foo</TT >: </P><PRE CLASS="PROGRAMLISTING" >ALTER USER MAPPING FOR bob SERVER foo OPTIONS (SET password 'public');</PRE ><P></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN66136" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >ALTER USER MAPPING</TT > conforms to ISO/IEC 9075-9 (SQL/MED). There is a subtle syntax issue: The standard omits the <TT CLASS="LITERAL" >FOR</TT > key word. Since both <TT CLASS="LITERAL" >CREATE USER MAPPING</TT > and <TT CLASS="LITERAL" >DROP USER MAPPING</TT > use <TT CLASS="LITERAL" >FOR</TT > in analogous positions, and IBM DB2 (being the other major SQL/MED implementation) also requires it for <TT CLASS="LITERAL" >ALTER USER MAPPING</TT >, PostgreSQL diverges from the standard here in the interest of consistency and interoperability. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN66145" ></A ><H2 >See Also</H2 ><A HREF="sql-createusermapping.html" >CREATE USER MAPPING</A >, <A HREF="sql-dropusermapping.html" >DROP USER MAPPING</A ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sql-alteruser.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sql-alterview.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ALTER USER</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ALTER VIEW</TD ></TR ></TABLE ></DIV ></BODY ></HTML >