Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
ALTER DEF...RIVILEGES(7) PostgreSQL 17.5 DocumentationALTER DEF...RIVILEGES(7)

NAME
       ALTER_DEFAULT_PRIVILEGES	- define default access	privileges

SYNOPSIS
       ALTER DEFAULT PRIVILEGES
	   [ FOR { ROLE	| USER } target_role [,	...] ]
	   [ IN	SCHEMA schema_name [, ...] ]
	   abbreviated_grant_or_revoke

       where abbreviated_grant_or_revoke is one	of:

       GRANT { { SELECT	| INSERT | UPDATE | DELETE | TRUNCATE |	REFERENCES | TRIGGER | MAINTAIN	}
	   [, ...] | ALL [ PRIVILEGES ]	}
	   ON TABLES
	   TO {	[ GROUP	] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]

       GRANT { { USAGE | SELECT	| UPDATE }
	   [, ...] | ALL [ PRIVILEGES ]	}
	   ON SEQUENCES
	   TO {	[ GROUP	] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]

       GRANT { EXECUTE | ALL [ PRIVILEGES ] }
	   ON {	FUNCTIONS | ROUTINES }
	   TO {	[ GROUP	] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]

       GRANT { USAGE | ALL [ PRIVILEGES	] }
	   ON TYPES
	   TO {	[ GROUP	] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]

       GRANT { { USAGE | CREATE	}
	   [, ...] | ALL [ PRIVILEGES ]	}
	   ON SCHEMAS
	   TO {	[ GROUP	] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]

       REVOKE [	GRANT OPTION FOR ]
	   { { SELECT |	INSERT | UPDATE	| DELETE | TRUNCATE | REFERENCES | TRIGGER | MAINTAIN }
	   [, ...] | ALL [ PRIVILEGES ]	}
	   ON TABLES
	   FROM	{ [ GROUP ] role_name |	PUBLIC } [, ...]
	   [ CASCADE | RESTRICT	]

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

       REVOKE [	GRANT OPTION FOR ]
	   { EXECUTE | ALL [ PRIVILEGES	] }
	   ON {	FUNCTIONS | ROUTINES }
	   FROM	{ [ GROUP ] role_name |	PUBLIC } [, ...]
	   [ CASCADE | RESTRICT	]

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

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

DESCRIPTION
       ALTER DEFAULT PRIVILEGES	allows you to set the privileges that will be
       applied to objects created in the future. (It does not affect
       privileges assigned to already-existing objects.) Privileges can	be set
       globally	(i.e., for all objects created in the current database), or
       just for	objects	created	in specified schemas.

       While you can change your own default privileges	and the	defaults of
       roles that you are a member of, at object creation time,	new object
       permissions are only affected by	the default privileges of the current
       role, and are not inherited from	any roles in which the current role is
       a member.

       As explained in Section 5.8, the	default	privileges for any object type
       normally	grant all grantable permissions	to the object owner, and may
       grant some privileges to	PUBLIC as well.	However, this behavior can be
       changed by altering the global default privileges with ALTER DEFAULT
       PRIVILEGES.

       Currently, only the privileges for schemas, tables (including views and
       foreign tables),	sequences, functions, and types	(including domains)
       can be altered. For this	command, functions include aggregates and
       procedures. The words FUNCTIONS and ROUTINES are	equivalent in this
       command.	(ROUTINES is preferred going forward as	the standard term for
       functions and procedures	taken together.	In earlier PostgreSQL
       releases, only the word FUNCTIONS was allowed. It is not	possible to
       set default privileges for functions and	procedures separately.)

       Default privileges that are specified per-schema	are added to whatever
       the global default privileges are for the particular object type. This
       means you cannot	revoke privileges per-schema if	they are granted
       globally	(either	by default, or according to a previous ALTER DEFAULT
       PRIVILEGES command that did not specify a schema). Per-schema REVOKE is
       only useful to reverse the effects of a previous	per-schema GRANT.

   Parameters
       target_role
	   Change default privileges for objects created by the	target_role,
	   or the current role if unspecified.

       schema_name
	   The name of an existing schema. If specified, the default
	   privileges are altered for objects later created in that schema. If
	   IN SCHEMA is	omitted, the global default privileges are altered.
	   IN SCHEMA is	not allowed when setting privileges for	schemas, since
	   schemas can't be nested.

       role_name
	   The name of an existing role	to grant or revoke privileges for.
	   This	parameter, and all the other parameters	in
	   abbreviated_grant_or_revoke,	act as described under GRANT(7)	or
	   REVOKE(7), except that one is setting permissions for a whole class
	   of objects rather than specific named objects.

NOTES
       Use psql(1)'s \ddp command to obtain information	about existing
       assignments of default privileges. The meaning of the privilege display
       is the same as explained	for \dp	in Section 5.8.

       If you wish to drop a role for which the	default	privileges have	been
       altered,	it is necessary	to reverse the changes in its default
       privileges or use DROP OWNED BY to get rid of the default privileges
       entry for the role.

EXAMPLES
       Grant SELECT privilege to everyone for all tables (and views) you
       subsequently create in schema myschema, and allow role webuser to
       INSERT into them	too:

	   ALTER DEFAULT PRIVILEGES IN SCHEMA myschema GRANT SELECT ON TABLES TO PUBLIC;
	   ALTER DEFAULT PRIVILEGES IN SCHEMA myschema GRANT INSERT ON TABLES TO webuser;

       Undo the	above, so that subsequently-created tables won't have any more
       permissions than	normal:

	   ALTER DEFAULT PRIVILEGES IN SCHEMA myschema REVOKE SELECT ON	TABLES FROM PUBLIC;
	   ALTER DEFAULT PRIVILEGES IN SCHEMA myschema REVOKE INSERT ON	TABLES FROM webuser;

       Remove the public EXECUTE permission that is normally granted on
       functions, for all functions subsequently created by role admin:

	   ALTER DEFAULT PRIVILEGES FOR	ROLE admin REVOKE EXECUTE ON FUNCTIONS FROM PUBLIC;

       Note however that you cannot accomplish that effect with	a command
       limited to a single schema. This	command	has no effect, unless it is
       undoing a matching GRANT:

	   ALTER DEFAULT PRIVILEGES IN SCHEMA public REVOKE EXECUTE ON FUNCTIONS FROM PUBLIC;

       That's because per-schema default privileges can	only add privileges to
       the global setting, not remove privileges granted by it.

COMPATIBILITY
       There is	no ALTER DEFAULT PRIVILEGES statement in the SQL standard.

SEE ALSO
       GRANT(7), REVOKE(7)

PostgreSQL 17.5			     2025	      ALTER DEF...RIVILEGES(7)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=ALTER_DEFAULT_PRIVILEGES&sektion=7&manpath=FreeBSD+Ports+14.3.quarterly>

home | help