CREATE USER() SQL Commands CREATE USER()NAME
CREATE USER - Creates a new database user
SYNOPSIS
CREATE USER username
[ WITH
[ SYSID uid ]
[ PASSWORD 'password' ] ]
[ CREATEDB | NOCREATEDB ] [ CREATEUSER | NOCREATEUSER ]
[ IN GROUP groupname [, ...] ]
[ VALID UNTIL 'abstime' ]
INPUTS
username
The name of the user.
uid The SYSID clause can be used to choose the Postgres user id of
the user that is being created. It is not at all necessary that
those match the UNIX user ids, but some people choose to keep
the numbers the same.
If this is not specified, the highest assigned user id plus one
will be used as default.
password
Sets the user's password. If you do not plan to use password
authentication you can omit this option, otherwise the user
won't be able to connect to a password-authenticated server.
See the chapter on client authentication in the Administrator's
Guide for details on how to set up authentication mechanisms.
CREATEDB
NOCREATEDB
These clauses define a user's ability to create databases. If
CREATEDB is specified, the user being defined will be allowed to
create his own databases. Using NOCREATEDB will deny a user the
ability to create databases. If this clause is omitted, NOCREAT‐
EDB is used by default.
CREATEUSER
NOCREATEUSER
These clauses determine whether a user will be permitted to cre‐
ate new users himself. This option will also make the user a
superuser who can override all access restrictions. Omitting
this clause will set the user's value of this attribute to be
NOCREATEUSER.
groupname
A name of a group into which to insert the user as a new member.
abstime
The VALID UNTIL clause sets an absolute time after which the
user's password is no longer valid. If this clause is omitted
the login will be valid for all time.
OUTPUTS
CREATE USER
Message returned if the command completes successfully.
DESCRIPTION
CREATE USER will add a new user to an instance of Postgres. Refer to
the administrator's guide for information about managing users and
authentication. You must be a database superuser to use this command.
Use ALTER USER [alter_user(l)] to change a user's password and privi‐
leges, and DROP USER [drop_user(l)] to remove a user. Use ALTER GROUP
to add or remove the user from other groups. Postgres comes with a
script createuser [createuser(1)] which has the same functionality as
this command (in fact, it calls this command) but can be run from the
command shell.
USAGE
Create a user with no password:
CREATE USER jonathan
Create a user with a password:
CREATE USER davide WITH PASSWORD 'jw8s0F4'
Create a user with a password, whose account is valid until the end of
2001. Note that after one second has ticked in 2002, the account is
not valid:
CREATE USER miriam WITH PASSWORD 'jw8s0F4' VALID UNTIL 'Jan 1 2002'
Create an account where the user can create databases:
CREATE USER manuel WITH PASSWORD 'jw8s0F4' CREATEDB
COMPATIBILITY
SQL92
There is no CREATE USER statement in SQL92.
SQL - Language Statements 29 March 2001 CREATE USER()
