On Sat, Nov 25, 2023 at 4:49 AM Peter J. Holzer <hjp-pgsql@hjp.at> wrote:
On 2023-11-24 13:06:45 -0500, Ron Johnson wrote: > On Fri, Nov 24, 2023 at 1:01 PM Peter J. Holzer <hjp-pgsql@hjp.at> wrote: > On 2023-11-20 22:03:06 -0500, Ron Johnson wrote: > > Or row level security. > > Does that help here? AIUI row level security can be used to limit access > to specific rows (e.g. user alex can access info about ssn '106-91-9930' > but not '234-56-7890') but not how many rows can be accessed in a single > query. > > > I don't think OP indicated that ssn in a unique key.
No he didn't, but that's IMHO not relevant to the possibility of using row level security. If a row level security allows a user to select a row, that row can be selected by any query, including «select * from t». I don't see a way to use RLS to ensure that a query can only return a sufficiently small subset of the total rows a user has access to. How would you do that?
It's an alternative to functions for restricting the client to only his data.
