GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 2.1AS(Slurm) |
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alter_user(l) |
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ALTER USER − Modifies user account information
ALTER USER
username
[ WITH PASSWORD ’password’ ]
[ CREATEDB | NOCREATEDB ] [ CREATEUSER | NOCREATEUSER ]
[ VALID UNTIL ’abstime’ ]
INPUTS
username
The name of the user whose details are to be altered.
password
The new password to be used for this account.
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.
CREATEUSER
NOCREATEUSER
These clauses determine whether a user will be permitted to create new users himself. This option will also make the user a superuser who can override all access restrictions.
abstime
The date (and, optionally, the time) at which this user’s password is to expire.
OUTPUTS
ALTER USER
Message returned if the alteration was successful.
ERROR: ALTER USER: user "username" does not exist
Error message returned if the specified user is not known to the database.
ALTER USER is used to change the attributes of a user’s Postgres account. Only a database superuser can change privileges and password expiration with this command. Ordinary users can only change their own password.
Use CREATE USER [create_user(l)] to create a new user and DROP USER [drop_user(l)] to remove a user.
Change a user password:
ALTER USER davide WITH PASSWORD ’hu8jmn3’;
Change a user’s valid until date:
ALTER USER manuel VALID UNTIL ’Jan 31 2030’;
Change a user’s valid until date, specifying that his authorization should expire at midday on 4th May 1998 using the time zone which is one hour ahead of UTC:
ALTER USER chris VALID UNTIL ’May 4 12:00:00 1998 +1’;
Give a user the ability to create other users and new databases:
ALTER USER miriam CREATEUSER CREATEDB;
SQL92
There is no ALTER USER statement in SQL92. The
standard leaves the definition of users to the
implementation.
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alter_user(l) | |