GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 6.2(Zoot) |
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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 ]
[ IN GROUP groupname [, ...] ]
[ VALID UNTIL ’abstime’ ]
INPUTS
Refer to CREATE USER for a detailed description of
each clause.
username
The Postgres account name of the user whose details are to be altered.
password
The new password to be used for this account.
groupname
The name of an access group into which this account is to be put.
abstime
The date (and, optionally, the time) at which this user’s access is to be terminated.
OUTPUTS
ALTER USER
Message returned if the alteration was successful.
ERROR: alterUser: 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. Please note that it is not possible to alter a user’s "usesysid" via the alter user statement. Also, it is only possible for the Postgres user or any user with read and modify permissions on pg_shadow to alter user passwords.
If any of the clauses of the alter user statement are omitted, the corresponding value in the pg_shadow table is left unchanged.
NOTES
ALTER USER is a Postgres language extension.
Refer to CREATE/DROP USER to create or remove a user account.
In the current release (v6.5), the IN GROUP clause is parsed but has no affect. When it is fully implemented, it is intended to modify the pg_group relation.
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 authorisation 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;
Place a user in two groups
ALTER USER miriam IN GROUP sales, payroll;
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) | |