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REVOKE(5)
NAME
REVOKE - remove access privileges
SYNOPSIS
REVOKE [ GRANT OPTION FOR ]
{ { SELECT | INSERT | UPDATE | DELETE | RULE | REFERENCES | TRIGGER }
[,...] | ALL [ PRIVILEGES ] }
ON [ TABLE ] tablename [, ...]
FROM { username | GROUP groupname | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
{ { CREATE | TEMPORARY | TEMP } [,...] | ALL [ PRIVILEGES ] }
ON DATABASE dbname [, ...]
FROM { username | GROUP groupname | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
{ EXECUTE | ALL [ PRIVILEGES ] }
ON FUNCTION funcname ([type, ...]) [, ...]
FROM { username | GROUP groupname | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
{ USAGE | ALL [ PRIVILEGES ] }
ON LANGUAGE langname [, ...]
FROM { username | GROUP groupname | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
{ { CREATE | USAGE } [,...] | ALL [ PRIVILEGES ] }
ON SCHEMA schemaname [, ...]
FROM { username | GROUP groupname | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
DESCRIPTION
The REVOKE command revokes previously granted privileges from one or more
users or groups of users. The key word PUBLIC refers to the implicitly
defined group of all users.
See the description of the GRANT [grant(5)] command for the meaning of the
privilege types.
Note that any particular user will have the sum of privileges granted
directly to him, privileges granted to any group he is presently a member
of, and privileges granted to PUBLIC. Thus, for example, revoking SELECT
privilege from PUBLIC does not necessarily mean that all users have lost
SELECT privilege on the object: those who have it granted directly or via a
group will still have it.
If GRANT OPTION FOR is specified, only the grant option for the privilege
is revoked, not the privilege itself.
If a user holds a privilege with grant option and has granted it to other
users then the privileges held by those other users are called dependent
privileges. If the privilege or the grant option held by the first user is
being revoked and dependent privileges exist, those dependent privileges
are also revoked if CASCADE is specified, else the revoke action will fail.
This recursive revocation only affects privileges that were granted through
a chain of users that is traceable to the user that is the subject of this
REVOKE command. Thus, the affected users may effectively keep the
privilege if it was also granted through other users.
NOTES
Use psql(1)'s \z command to display the privileges granted on existing
objects. See also GRANT [grant(5)] for information about the format.
A user can only revoke privileges that were granted directly by that user.
If, for example, user A has granted a privilege with grant option to user
B, and user B has in turned granted it to user C, then user A cannot revoke
the privilege directly from C. Instead, user A could revoke the grant
option from user B and use the CASCADE option so that the privilege is
automatically revoked from user C.
If a superuser chooses to issue a GRANT or REVOKE command, the command is
performed as though it were issued by the owner of the affected object.
Since all privileges ultimately come from the object owner (possibly
indirectly via chains of grant options), it is possible for a superuser to
revoke all privileges, but this may require use of CASCADE as stated above.
EXAMPLES
Revoke insert privilege for the public on table films:
REVOKE INSERT ON films FROM PUBLIC;
Revoke all privileges from user manuel on view kinds:
REVOKE ALL PRIVILEGES ON kinds FROM manuel;
COMPATIBILITY
The compatibility notes of the GRANT [grant(5)] command apply analogously
to REVOKE. The syntax summary is:
REVOKE [ GRANT OPTION FOR ] privileges
ON object [ ( column [, ...] ) ]
FROM { PUBLIC | username [, ...] }
{ RESTRICT | CASCADE }
One of RESTRICT or CASCADE is required according to the standard, but
PostgreSQL assumes RESTRICT by default.
SEE ALSO
GRANT [grant(5)]
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Index for Section 5 |
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Alphabetical listing for R |
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