Craig's post yesterday about exposing syntax for disabling indexes reminded me of another feature I think we're lacking in areas where we have to do table management.
The issue is to create a *something* that has the exact permissions of another *something*. Usually it's creating a table related to (but not yet inheriting) a parent, but it could also be to drop and recreate a *something*, making sure it has the same permissions it had before.
BEGIN;
CREATE VIEW dummy AS SELECT 1::text as dummy;
UPDATE pg_class
SET relacl = ( SELECT relacl FROM pg_class
WHERE oid = 'foo'::regclass)
WHERE oid = 'dummy'::regclass;
DROP VIEW foo;
CREATE VIEW foo AS <insert new view definition here>;
UPDATE pg_class
SET relacl = ( SELECT relacl FROM pg_class
WHERE oid = 'dummy'::regclass)
WHERE oid = 'foo'::regclass;
END;
I suppose I could have learned how to store a relacl as a scalar and just saved it to a variable, but even then I'd have to twiddle with (and have the permissions to twiddle with) pg_class.
So it'd be nice to:
ALTER TABLE bar SET PERMISSIONS FROM foo;
or maybe even
GRANT SAME PERMISSIONS ON VIEW bar FROM foo;
Thoughts?
