Re: Clarification on View Privileges and Operator Execution in PostgreSQL

On Sun, Apr 7, 2024 at 11:02 AM Ayush Vatsa <ayushvatsa1810(at)gmail(dot)com>
wrote:

> > If you want to confirm what the documentation says create a custom
> operator/function that alex is not permitted to execute and have them query
> a view defined by postgres that uses that function.
> Thanks for the suggestion, it helped and I found out alex could not
> execute the view as it didn't have privileges for the function associated
> with operator
>
> But a small doubt arises here I have to revoke the execution of the
> function using the command
> REVOKE ALL ON ALL FUNCTIONS IN SCHEMA public from public;
> but when I tried
> REVOKE EXECUTE ON FUNCTION text_equals(text,text) FROM alex;
> or
> REVOKE ALL ON FUNCTION text_equals(text,text) FROM alex;
> It didn't work i.e alex can still execute text_equals function. Why is it
> so?
>
>>
>>
See https://www.postgresql.org/docs/current/ddl-priv.html
Especially the part regarding default privileges. The PUBLIC pseudo-role
is granted execute on functions by default. You are probably trying to
revoke a privilege from alex that was never granted to alex directly.

David J.