'\" t
.\"     Title: CREATE USER MAPPING
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2021
.\"    Manual: PostgreSQL 13.4 Documentation
.\"    Source: PostgreSQL 13.4
.\"  Language: English
.\"
.TH "CREATE USER MAPPING" "7" "2021" "PostgreSQL 13.4" "PostgreSQL 13.4 Documentation"
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.SH "NAME"
CREATE_USER_MAPPING \- define a new mapping of a user to a foreign server
.SH "SYNOPSIS"
.sp
.nf
CREATE USER MAPPING [ IF NOT EXISTS ] FOR { \fIuser_name\fR | USER | CURRENT_USER | PUBLIC }
    SERVER \fIserver_name\fR
    [ OPTIONS ( \fIoption\fR \*(Aq\fIvalue\fR\*(Aq [ , \&.\&.\&. ] ) ]
.fi
.SH "DESCRIPTION"
.PP
\fBCREATE USER MAPPING\fR
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\&.
.PP
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
USAGE
privilege on the server has been granted to the user\&.
.SH "PARAMETERS"
.PP
IF NOT EXISTS
.RS 4
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\&.
.RE
.PP
\fIuser_name\fR
.RS 4
The name of an existing user that is mapped to foreign server\&.
CURRENT_USER
and
USER
match the name of the current user\&. When
PUBLIC
is specified, a so\-called public mapping is created that is used when no user\-specific mapping is applicable\&.
.RE
.PP
\fIserver_name\fR
.RS 4
The name of an existing server for which the user mapping is to be created\&.
.RE
.PP
OPTIONS ( \fIoption\fR \*(Aq\fIvalue\fR\*(Aq [, \&.\&.\&. ] )
.RS 4
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\*(Aqs foreign\-data wrapper\&.
.RE
.SH "EXAMPLES"
.PP
Create a user mapping for user
bob, server
foo:
.sp
.if n \{\
.RS 4
.\}
.nf
CREATE USER MAPPING FOR bob SERVER foo OPTIONS (user \*(Aqbob\*(Aq, password \*(Aqsecret\*(Aq);
.fi
.if n \{\
.RE
.\}
.SH "COMPATIBILITY"
.PP
\fBCREATE USER MAPPING\fR
conforms to ISO/IEC 9075\-9 (SQL/MED)\&.
.SH "SEE ALSO"
ALTER USER MAPPING (\fBALTER_USER_MAPPING\fR(7)), DROP USER MAPPING (\fBDROP_USER_MAPPING\fR(7)), CREATE FOREIGN DATA WRAPPER (\fBCREATE_FOREIGN_DATA_WRAPPER\fR(7)), CREATE SERVER (\fBCREATE_SERVER\fR(7))