AW: [HACKERS] Re: PostgreSQL reference manual

>> > > I have another question about GRANT/REVOKE:
>> > >
>> > >       grant <privilege[,privilege,...]>
>> > >            on <rel1>[,...<reln>]
>> > >            to [public | GROUP <group> | <username>]
>> > >                         ^^^^^^^^^^^^^
>> > > I don't know how to create a GROUP ?
>> >
>> > I believe that you use "CREATE USER groupname", and then can assign
>> > privileges to that pseudo-user/group, and then add users to that
>> > group. Have you tried that?
>> postgres=> create user grupo;
>> CREATE USER

No, do this: insert into pg_group values ('grupo', 100, '{6}');

>> postgres=> grant all on tmp to grupo;
>> CHANGE
>> create user joe in group grupo;

looks like this is ignored ?

>> CREATE USER
>> postgres=> grant select on tmp to group grupo;
>> ERROR:  non-existent group "grupo"
>
>Can someone tell us how "groups" work? I'm not finding enough clues just
>by looking in the parser, and haven't stumbled across it in the docs...

I have no idea what the grosysid is supposed to be, I only notice, that 100 works while 18204
crashes psql. To be consistent with pg_user I think it should hold the unix group id,
if the group also exists in /etc/groups. If not, from what I see in the sources
it must still be unique, see src/backend/catalog/aclchk.c ** this code is a little mess really **
The field grolist has to be manually maintained currently. It contains an
array of usesysid's of the users in this group. (select usesysid from pg_user where usename='joe';)

Andreas