Forgive me if this is not the correct list for this type of question.
I thought I understood PostgreSQL’s privileges well enough, but I’m running into problems, so I must misunderstand something.
I have a website that I’m adding functionality to, and therefore need to expand the database. The database already contains around 30 populated tables with 1 group role (group_reader) and 1 user role (user_reader). To all existing tables, I’d assigned PUBLIC and group_reader SELECT privilege.
Everything is working fine.
Now, I created one more group role (called group_writer) and another user role (user_writer) and make sure that user_writer is a member of group_writer.
I then explicitly grant group_writer SELECT privilege on all tables. (I know this is technically not necessary as PUBLIC has already been assigned SELECT privilege.)
I created (tbl_batch) and deliberately decided to not grant PUBLIC access to this table. Instead, I granted group_writer SELECT, INSERT, UPDATE, and DELETE privileges to this table. Looking at the ACL list for this table confirms this.
When I attempt to access this table as user_writer, I’m denied access. I’m access this through Tomcat and verifying the connected user as user_writer.
I shouldn’t have to grant the PUBLIC group full access to this table as well, should I?
From what I understand of the manual, a user’s privileges are the SUM of the privileges of all groups of which that user is a member. Therefore, user_writer’s privileges should be {SELECT, INSERT, UPDATE, DELETE} from group_writer plus {} from PUBLIC, which should yield {SELECT, INSERT, UPDATE, DELETE}.
BTW, I’m running 8.2.6 on WinXP x64 SP2.
Thanks,
Gord