From: todd brandys <brandys@eng3.hep.uiuc.edu>
o The manual (really text) pages for create/alter/drop user.
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Marc G. Fournier
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/src/man/Attic/alter_user.l,v 1.1 1998/01/25 07:42:00 scrappy Exp $
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.TH "ALTER USER" SQL 01/26/98 PostgreSQL PostgreSQL
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.SH NAME
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alter user -- alter user account information within a PostgreSQL instance
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.SH SYNOPSIS
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.nf
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\fBalter user\fR username
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[\fBwith password\fR password]
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[\fBcreatedb\fR | \fBnocreatedb\fR]
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[\fBcreateuser\fR | \fBnocreateuser\fR]
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[\fBin group\fR group-1, ..., group-n]
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[\fBvalid until '\fRabstime\fB'\fR]
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.fi
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.SH DESCRIPTION
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.BR "alter user"
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is used to change the attributes of a user's PostgreSQL account. For a
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detailed description of each of the clause in the alter user statement,
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please see the create_user(l) manual page. Please note that it is not
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possible to alter a user's usesysid via the alter user statement. Also,
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it is only possible for the postgres user or any user with read and modify
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permissions on pg_user to alter user passwords.
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If any of the clauses of the alter user statement are omitted, the
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corresponding value in the pg_user relation is left unchanged.
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This statement can be used to modify users created with createuser(1).
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.SH EXAMPLES
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.nf
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---
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--- Change a user password
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---
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alter user tab with password hu8jmn3;
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.fi
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.nf
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---
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--- Change a user's valid until date
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---
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alter user tab valid until 'Jan 31 2030';
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.fi
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.nf
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---
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--- Give a user the ability to create other users.
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---
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alter user tab createuser;
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.fi
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.SH "SEE ALSO"
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create_user(l), drop_user(l).
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/src/man/Attic/create_user.l,v 1.1 1998/01/25 07:42:01 scrappy Exp $
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.TH "CREATE USER" SQL 01/26/98 PostgreSQL PostgreSQL
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.SH NAME
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create user -- create a new user within a PostgreSQL instance
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.SH SYNOPSIS
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.nf
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\fBcreate user <username>
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[\fBwith password\fR password]
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[\fBcreatedb\fR | \fBnocreatedb\fR]
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[\fBcreateuser\fR | \fBnocreateuser\fR]
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[\fBin group\fR group-1, ..., group-n]
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[\fBvalid until '\fRabstime\fB'\fR]
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.fi
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.SH DESCRIPTION
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.BR "create user"
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will add a new user to an instance of PostgreSQL. The new user will be
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given a usesysid of 'SELECT max(usesysid) + 1 FROM pg_user'. This means
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that a PostgreSQL user's usesysid will not correspond to their operating
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system(OS) user id. The exception to this rule is the 'postgres' user,
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whose OS user id is used as the usesysid during the initdb process. If
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you still want the OS user id and the usesysid to match for any given
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user, then use the createuser(1) script provided with the PostgreSQL
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distribution.
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The 'with password' clause sets the user's password within the pg_user
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relation. For this reason, pg_user is no longer accessible to the
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'public' group. Please note that when initdb(1) is executed for an
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instance of PostgreSQL that the postgres user's password is initially set
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to NULL. When a user's password in the pg_user relation is NULL, then
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user authentication proceeds as it historically has (HBA, PG_PASSWORD,
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etc). However, if a password is set for a user, then a new authentication
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system supplants any other configured for the PostgreSQL instance, and the
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password stored in the pg_user relation is used for authentication. For
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more details on how this authentication system functions see pg_crypt(3).
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If the 'with password' clause is omitted, then the user's password is set
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to the empty string with equates to a NULL value in the authentication
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system mentioned above.
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The createdb/nocreatedb clause defines a user's ability to create
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databases. If createdb is specified, then the user being defined will be
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allowed to create his/her own databases. Using nocreatedb will deny a
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user the ability to create databases. If this clause is omitted, then
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nocreatedb is used by default.
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The createuser/nocreateuser clause allows/prevents a user from creating
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new users in an instance of PostgreSQL. Omitting this clause will set the
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user's value of this attribute to be nocreateuser.
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At the current time the 'in group' clause is non-functional. The intent
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is to use this clause to affect the groups a user is a member of (as
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defined in the pg_group relation).
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Finally, the 'valid until' clause sets an absolute time after which the
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user's PostgreSQL login is no longer valid. Please note that if a user
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does not have a password defined in the pg_user relation, then the valid
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until date will not be checked during user authentication. If this clause
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is omitted, then a NULL value is stored in pg_user for this attribute, and
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the login will be valid for all time.
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.SH EXAMPLES
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.nf
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---
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--- Create a user with no password
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---
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create user tab;
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.fi
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.nf
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---
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--- Create a user with a password
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---
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create user tab with password jw8s0F4;
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.fi
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.nf
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---
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--- Create a user with a password, whose account is valid thru 2001
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--- Note that after one second has ticked in 2002, the account is not
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--- valid
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---
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create user tab with password jw8s0F4 valid until 'Jan 1 2002';
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.fi
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.nf
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---
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--- Create an account where the user can create databases.
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---
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create user tab with password jw8s0F4 createdb;
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.fi
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.SH "SEE ALSO"
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pg_crypt(3), alter_user(l), drop_user(l).
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/src/man/Attic/drop_user.l,v 1.1 1998/01/25 07:42:02 scrappy Exp $
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.TH "DROP USER" SQL 01/26/98 PostgreSQL PostgreSQL
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.SH NAME
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drop user -- drop user from within a PostgreSQL instance
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.SH SYNOPSIS
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.nf
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\fBdrop user\fR username
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.fi
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.SH DESCRIPTION
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.BR "drop user"
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statement removes the named user from a PostgreSQL instance, along with
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any databases owned by the user. It does not remove tables, views, or
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triggers owned by the named user in database not owned by the user. This
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statement can be used in the place of destroyuser(1), regardless of how
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the user was created.
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.SH EXAMPLES
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.nf
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---
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--- Drop a user
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---
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drop user tab;
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.fi
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.SH "SEE ALSO"
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alter_user(l), create_user(l).
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