REVOKE — remove access privileges
REVOKE [ GRANT OPTION FOR ]
    { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
    [, ...] | ALL [ PRIVILEGES ] }
    ON { [ TABLE ] table_name [, ...]
         | ALL TABLES IN SCHEMA schema_name [, ...] }
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { { SELECT | INSERT | UPDATE | REFERENCES } ( column_name [, ...] )
    [, ...] | ALL [ PRIVILEGES ] ( column_name [, ...] ) }
    ON [ TABLE ] table_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { { USAGE | SELECT | UPDATE }
    [, ...] | ALL [ PRIVILEGES ] }
    ON { SEQUENCE sequence_name [, ...]
         | ALL SEQUENCES IN SCHEMA schema_name [, ...] }
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { { CREATE | CONNECT | TEMPORARY | TEMP } [, ...] | ALL [ PRIVILEGES ] }
    ON DATABASE database_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { USAGE | ALL [ PRIVILEGES ] }
    ON DOMAIN domain_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { USAGE | ALL [ PRIVILEGES ] }
    ON FOREIGN DATA WRAPPER fdw_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { USAGE | ALL [ PRIVILEGES ] }
    ON FOREIGN SERVER server_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { EXECUTE | ALL [ PRIVILEGES ] }
    ON { { FUNCTION | PROCEDURE | ROUTINE } function_name [ ( [ [ argmode ] [ arg_name ] arg_type [, ...] ] ) ] [, ...]
         | ALL { FUNCTIONS | PROCEDURES | ROUTINES } IN SCHEMA schema_name [, ...] }
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { USAGE | ALL [ PRIVILEGES ] }
    ON LANGUAGE lang_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { { SELECT | UPDATE } [, ...] | ALL [ PRIVILEGES ] }
    ON LARGE OBJECT loid [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { { CREATE | USAGE } [, ...] | ALL [ PRIVILEGES ] }
    ON SCHEMA schema_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { CREATE | ALL [ PRIVILEGES ] }
    ON TABLESPACE tablespace_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
    { USAGE | ALL [ PRIVILEGES ] }
    ON TYPE type_name [, ...]
    FROM { [ GROUP ] role_name | PUBLIC } [, ...]
    [ CASCADE | RESTRICT ]
REVOKE [ ADMIN OPTION FOR ]
    role_name [, ...] FROM role_name [, ...]
    [ CASCADE | RESTRICT ]
   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 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 privilege
   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. On the other hand, if a role has been granted privileges on a table, then revoking the same privileges from individual columns will have no effect.
   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.
  
   Use psql's \dp command to
   display the privileges granted on existing tables and columns.  See GRANT 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 turn 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 their 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
    PRIVILEGES forms will issue a warning message if no grant options are
    held, while the other forms will issue a warning 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 indirectly 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 unspecified
    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 privileges other than the ones you intended, or not
    revoking anything at all.
   
   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;
    The compatibility notes of the GRANT command
    apply analogously to REVOKE.
    The keyword RESTRICT or CASCADE
    is required according to the standard, but PostgreSQL
    assumes RESTRICT by default.