Re: Add pg_get_acl() function get the ACL for a database object

On Tue, Jun 25, 2024, at 08:42, Michael Paquier wrote:
> On Tue, Jun 25, 2024 at 08:06:41AM +0200, Joel Jacobson wrote:
>> Not sure if I see how to implement it for pg_get_acl() though.
>> 
>> I've had a look at how pg_describe_object() works for this case:
>> 
>> SELECT pg_describe_object(0,'t'::regclass::oid,0);
>> ERROR:  unsupported object class: 0
>> 
>> I suppose this is the error message we want in pg_get_acl() when
>> the class ID is invalid?
>
> Ah, and here I thought that this was also returning NULL.  My previous
> work in this area only focused on the object OIDs, not their classes.
> At the end, I'm OK to keep your patch as it is, checking only for the
> case of pinned dependencies in pg_depend as we do for
> pg_describe_object().
>
> It's still a bit confusing, but we've been living with that for years
> now without anybody complaining except me, so perhaps that's fine at
> the end to keep that as this is still useful.  If we change that,
> applying the same rules across the board would make the most sense.

OK, cool.

New version attached that fixes the indentation of the example,
and uses <literal>NULL</literal> instead of just NULL in the doc.

/Joel