Re: [HACKERS] Role members

On Mon, May 21, 2007 at 02:21:52PM +0400, Akmal Akmalhojaev wrote:
> Hello! I have the following question.

Moving to -general.

> For example I have a role ID1 with members ID2 and ID3.
> Role ID2 has also members ID4 and ID5. It means that roles ID4 and ID5 are
> members of ID1.
> The question: Is there any function in PostgreSQL, that finds all the
> members of role ID1 - even such members, as ID4 and ID5.

Here's a function I've written in SQL:

CREATE OR REPLACE FUNCTION get_roles_under(OID)
RETURNS SETOF OID
LANGUAGE sql
AS $$
SELECT
$1
UNION
SELECT
member
FROM
pg_catalog.pg_auth_members
WHERE
roleid = $1
UNION
SELECT
get_roles_over(roleid) AS "roleid"
FROM
pg_catalog.pg_auth_members
WHERE
roleid IN (
SELECT
member
FROM
pg_catalog.pg_auth_members
WHERE
roleid = $1
)
$$;

Cheers,
D
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
phone: +1 415 235 3778 AIM: dfetter666
Skype: davidfetter

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