ALTER DEFAULT PRIVILEGES(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 }
[, ...] | 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
TO { [ GROUP ] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]
GRANT { USAGE | ALL [ PRIVILEGES ] }
ON TYPES
TO { [ GROUP ] role_name | PUBLIC } [, ...] [ WITH GRANT OPTION ]
REVOKE [ GRANT OPTION FOR ]
{ { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
[, ...] | 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
FROM { [ GROUP ] role_name | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
REVOKE [ GRANT OPTION FOR ]
{ USAGE | ALL [ PRIVILEGES ] }
ON TYPES
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.) Currently, only the
privileges for tables (including views and foreign tables), sequences,
functions, and types (including domains) can be altered.
You can change default privileges only for objects that will be created
by yourself or by roles that you are a member of. The privileges can be
set globally (i.e., for all objects created in the current database),
or just for objects created in specified schemas. Default privileges
that are specified per-schema are added to whatever the global default
privileges are for the particular object type.
As explained under GRANT(7), 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.
Parameters
target_role
The name of an existing role of which the current role is a member.
If FOR ROLE is omitted, the current role is assumed.
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.
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 values
is the same as explained for \dp under GRANT(7).
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;
COMPATIBILITY
There is no ALTER DEFAULT PRIVILEGES statement in the SQL standard.
SEE ALSO
GRANT(7), REVOKE(7)
PostgreSQL 9.4.15 2017 ALTER DEFAULT PRIVILEGES(7)
PostgreSQL 9.4.15 - Generated Sun Nov 26 18:57:15 CST 2017