Provided by: postgresql-client-8.0_8.0.7-2build1_i386
CREATE USER - define a new database user account
CREATE USER name [ [ WITH ] option [ ... ] ]
where option can be:
| CREATEDB | NOCREATEDB
| CREATEUSER | NOCREATEUSER
| IN GROUP groupname [, ...]
| [ ENCRYPTED | UNENCRYPTED ] PASSWORD ’password’
| VALID UNTIL ’abstime’
CREATE USER adds a new user to a PostgreSQL database cluster. Refer to
the documentation and the documentation for information about managing
users and authentication. You must be a database superuser to use this
name The name of the new user.
uid The SYSID clause can be used to choose the PostgreSQL user ID of
the new user. This is normally not necessary, but may be useful
if you need to recreate the owner of an orphaned object.
If this is not specified, the highest assigned user ID plus one
(with a minimum of 100) will be used as default.
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 not specified, NOCREATEDB is the
These clauses determine whether a user will be permitted to
create new users himself. CREATEUSER will also make the user a
superuser, who can override all access restrictions. If not
specified, NOCREATEUSER is the default.
A name of an existing group into which to insert the user as a
new member. Multiple group names may be listed.
Sets the user’s password. If you do not plan to use password
authentication you can omit this option, but then the user won’t
be able to connect if you decide to switch to password
authentication. The password can be set or changed later, using
ALTER USER [alter_user(7)].
These key words control whether the password is stored encrypted
in the system catalogs. (If neither is specified, the default
behavior is determined by the configuration parameter
password_encryption.) If the presented password string is
already in MD5-encrypted format, then it is stored encrypted as-
is, regardless of whether ENCRYPTED or UNENCRYPTED is specified
(since the system cannot decrypt the specified encrypted
password string). This allows reloading of encrypted passwords
Note that older clients may lack support for the MD5
authentication mechanism that is needed to work with passwords
that are stored encrypted.
The VALID UNTIL clause sets an absolute time after which the
user’s password is no longer valid. If this clause is omitted
the password will be valid for all time.
Use ALTER USER [alter_user(7)] to change the attributes of a user, and
DROP USER [drop_user(7)] to remove a user. Use ALTER GROUP
[alter_group(l)] to add the user to groups or remove the user from
PostgreSQL includes a program createuser [createuser(1)] that has the
same functionality as CREATE USER (in fact, it calls this command) but
can be run from the command shell.
The VALID UNTIL clause defines an expiration time for a password only,
not for the user account per se. In particular, the expiration time is
not enforced when logging in using a non-password-based authentication
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 that is valid until the end of 2004.
After one second has ticked in 2005, the password is no longer valid.
CREATE USER miriam WITH PASSWORD ’jw8s0F4’ VALID UNTIL ’2005-01-01’;
Create an account where the user can create databases:
CREATE USER manuel WITH PASSWORD ’jw8s0F4’ CREATEDB;
The CREATE USER statement is a PostgreSQL extension. The SQL standard
leaves the definition of users to the implementation.
ALTER USER [alter_user(7)], DROP USER [drop_user(l)], createuser(1)