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REVOKE(7)                        SQL Commands                        REVOKE(7)



NAME
       REVOKE - remove access privileges


SYNOPSIS
       REVOKE [ GRANT OPTION FOR ]
           { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
           [,...] | ALL [ PRIVILEGES ] }
           ON [ TABLE ] tablename [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { { SELECT | INSERT | UPDATE | REFERENCES } ( column [, ...] )
           [,...] | ALL [ PRIVILEGES ] ( column [, ...] ) }
           ON [ TABLE ] tablename [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { { USAGE | SELECT | UPDATE }
           [,...] | ALL [ PRIVILEGES ] }
           ON SEQUENCE sequencename [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { { CREATE | CONNECT | TEMPORARY | TEMP } [,...] | ALL [ PRIVILEGES ] }
           ON DATABASE dbname [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { USAGE | ALL [ PRIVILEGES ] }
           ON FOREIGN DATA WRAPPER fdwname [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { USAGE | ALL [ PRIVILEGES ] }
           ON FOREIGN SERVER servername [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { EXECUTE | ALL [ PRIVILEGES ] }
           ON FUNCTION funcname ( [ [ argmode ] [ argname ] argtype [, ...] ] ) [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { USAGE | ALL [ PRIVILEGES ] }
           ON LANGUAGE langname [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { { CREATE | USAGE } [,...] | ALL [ PRIVILEGES ] }
           ON SCHEMA schemaname [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ GRANT OPTION FOR ]
           { CREATE | ALL [ PRIVILEGES ] }
           ON TABLESPACE tablespacename [, ...]
           FROM { [ GROUP ] rolename | PUBLIC } [, ...]
           [ CASCADE | RESTRICT ]

       REVOKE [ ADMIN OPTION FOR ]
           role [, ...] FROM rolename [, ...]
           [ CASCADE | RESTRICT ]


DESCRIPTION
       The  REVOKE command revokes previously granted privileges from one or more roles. The key word PUBLIC refers to
       the implicitly defined group of all roles.

       See the description of the GRANT [grant(7)] command for the meaning of the privilege types.

       Note that any particular role will have the sum of privileges granted directly to it, privileges granted to any
       role  it  is presently a member of, and privileges granted to PUBLIC. Thus, for example, revoking SELECT privi-
       lege from PUBLIC does not necessarily mean that all roles have lost SELECT privilege on the object:  those  who
       have  it  granted directly or via another role will still have it. Similarly, revoking SELECT from a user might
       not prevent that user from using SELECT if PUBLIC or another membership role still has SELECT rights.

       If GRANT OPTION FOR is specified, only the grant option for the privilege is revoked, not the privilege itself.
       Otherwise, both the privilege and the grant option are revoked.

       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; if it is not, 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 might effectively keep the privilege if it was also granted through other users.

       When revoking privileges on a table, the corresponding column privileges (if any) are automatically revoked  on
       each column of the table, as well.

       When  revoking  membership in a role, GRANT OPTION is instead called ADMIN OPTION, but the behavior is similar.
       Note also that this form of the command does not allow the noise word GROUP.

NOTES
       Use psql(1)'s \dp command to display  the  privileges  granted  on  existing  tables  and  columns.  See  GRANT
       [grant(7)] for information about the format. For non-table objects there are other \d commands that can display
       their privileges.

       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 in turn revoked from user C. For another example, if both A and B have
       granted the same privilege to C, A can revoke his own grant but not B's grant, so C will still effectively have
       the privilege.

       When  a  non-owner  of an object attempts to REVOKE privileges on the object, the command will fail outright if
       the user has no privileges whatsoever on the object. As long as some privilege is available, the  command  will
       proceed,  but  it will revoke only those privileges for which the user has grant options. The REVOKE ALL PRIVI-
       LEGES forms will issue a warning message if no grant options are held, while the other forms will issue a warn-
       ing  if  grant options for any of the privileges specifically named in the command are not held.  (In principle
       these statements apply to the object owner as well, but since the owner is always treated as holding all  grant
       options, the cases can never occur.)

       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  indi-
       rectly  via  chains  of grant options), it is possible for a superuser to revoke all privileges, but this might
       require use of CASCADE as stated above.

       REVOKE can also be done by a role that is not the owner of the affected object, but is a  member  of  the  role
       that  owns  the object, or is a member of a role that holds privileges WITH GRANT OPTION on the object. In this
       case the command is performed as though it were issued by the containing role that actually owns the object  or
       holds  the  privileges  WITH  GRANT OPTION. For example, if table t1 is owned by role g1, of which role u1 is a
       member, then u1 can revoke privileges on t1 that are recorded as being  granted  by  g1.   This  would  include
       grants made by u1 as well as by other members of role g1.

       If the role executing REVOKE holds privileges indirectly via more than one role membership path, it is unspeci-
       fied which containing role will be used to perform the command. In such cases it is best practice  to  use  SET
       ROLE  to  become the specific role you want to do the REVOKE as. Failure to do so might lead to revoking privi-
       leges other than the ones you intended, or not revoking anything at all.

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;

       Note that this actually means ''revoke all privileges that I granted''.

       Revoke membership in role admins from user joe:

       REVOKE admins FROM joe;


COMPATIBILITY
       The compatibility notes of the GRANT [grant(7)] command apply analogously to REVOKE.  The keyword  RESTRICT  or
       CASCADE is required according to the standard, but PostgreSQL assumes RESTRICT by default.

SEE ALSO
       GRANT [grant(7)]



SQL - Language Statements         2014-02-17                         REVOKE(7)