Etsuro Fujita <etsuro.fujita@gmail.com> writes:
> On Sat, Sep 25, 2021 at 4:11 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Longer-term, it seems like we really have to be able to represent
>> the notion of a remote column that has an "unknown" collation (that
>> is, one that doesn't match any local collation, or at least is not
>> known to do so).
> +1
> In addition, a) we should detect whether local “default” matches
> remote “default”,
If we had a way to do that, most of the problem here wouldn't exist.
I don't believe we can do it reliably. (Maybe we could put it on
the user to tell us, say via a foreign-server property?)
regards, tom lane