Re: Extend ALTER DEFAULT PRIVILEGES for large objects

On 2025/07/10 14:11, Yugo Nagata wrote:
> On Thu, 10 Jul 2025 13:23:47 +0900
> Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> wrote:
>
>>
>>
>> On 2025/07/10 10:30, Yugo Nagata wrote:
>>> You're right. I must have overlooked something. I think I saw "TO" being
>>> suggested after "FOREIGN SERVER" when no foreign servers were defined.
>>>
>>> The attached patch still prevents "TO/FROM" from being suggested after
>>> "FOREIGN SERVER" in such cases.
>
>>
>> Based on your patch, I'm thinking of simplifying the code like this:
>>
>> - else if (Matches("GRANT", MatchAnyN, "ON", MatchAny, MatchAny))
>> - COMPLETE_WITH("TO");
>> - else if (Matches("REVOKE", MatchAnyN, "ON", MatchAny, MatchAny))
>> - COMPLETE_WITH("FROM");
>> + else if (Matches("GRANT|REVOKE", MatchAnyN, "ON", MatchAny, MatchAny) &&
>> + !TailMatches("FOREIGN", "SERVER") && !TailMatches("LARGE", "OBJECT"))
>> + {
>> + if (Matches("GRANT", MatchAnyN, "ON", MatchAny, MatchAny))
>> + COMPLETE_WITH("TO");
>> + else
>> + COMPLETE_WITH("FROM");
>> + }
>
> Thank you for your review!
> I agree with your suggestion and have updated the patch accordingly.

I've pushed the patch. Thanks!

>>> But perhaps this corner case doesn't really
>>> need to be handled?
>>
>> Probably I failed to get your point here. Could you clarify what you meant?
>
> I'm sorry for not explaining it clearly.
>
> Currently, TO or FROM could be suggested immediately after FOREIGN SERVER, but
> only when no foreign servers are defined. When foreign servers do exist,
> their names are correctly suggested instead, as expected.
>
> The patch fixed the behavior so that TO or FROM are not suggested after FOREIGN SERVER,
> even when no foreign servers are defined. However, I've started to wonder if it's worth
> fixing such a corner case. What do you think?

I think it's worth doing. This issue can lead to unexpected behavior
and is something users might run into. If the fix were overly complex
for a minor issue, it might not be justified. But that's not the case here.

Regards,

--
Fujii Masao
NTT DATA Japan Corporation