Robert Haas <robertmhaas@gmail.com> writes:
> On Mon, Jul 16, 2012 at 9:58 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> BTW, I wonder whether the code that checks for relfilenode conflict
>> when selecting a pg_class or relfilenode OID tries both file naming
>> conventions? If not, should we make it do so?
> I don't believe it does, nor do I see what we would gain by making it to do so.
What we would gain is ensuring that we aren't using the same relfilenode
for both a regular table and a temp table. Do you really want to assume
that such a conflict is 100% safe? It sounds pretty scary to me, and
even if we were sure the backend would never get confused, what about
client-side code that's looking at relfilenode?
regards, tom lane