User and Groups

Hi, I'm having some problems trying to get my head around how users and groups
work.

I have 2 groups of users: client & consultants. I create these groups as
follows:-

/* Group : create group consultants */
INSERT INTO pg_group VALUES ('consultants', '100');
INSERT INTO pg_group VALUES ('clients', '200');

I then create some tables and set the permissions on these tables as follows:-

REVOKE ALL ON clients, clientaddr, consultants, consultantaddr,
systemconstants, clients_consultants, tasks, client_extras,
timesheet, schedule, invoice, invoice_items,
pg_user, pg_shadow
FROM GROUP clients;

GRANT ALL ON clients, clientaddr, consultants, consultantaddr,
systemconstants, clients_consultants, tasks, client_extras,
timesheet, schedule, invoice, invoice_items
TO GROUP consultants;

Now I create a user:-

testdb=> CREATE USER paul IN GROUP consultants;
CREATE USER

I login as this user and try a select on a table that should have permissions
set:-

testdb=> select * from consultants;
NOTICE: in_group: group 100 not found
ERROR: consultants: Permission denied.

I can't understand this - should I insert the user id of each consultant user
into grolist of pg_group where groname = consultants?

TOA

--

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Greg Frith - University Of Leeds : School of Computer Studies