Re: AW: [HACKERS] Getting OID in psql of recent insert

Zeugswetter Andreas SEV <ZeugswetterA@wien.spardat.at> writes:
>> Yes, I use 'em the same way.  I think an OID is kind of like a pointer
>> in a C program: good for fast, unique access to an object within the
>> context of the execution of a particular application (and maybe not
>> even that long).  You don't write pointers into files to be used again
>> by other programs, though, and in the same way an OID isn't a good
>> candidate for a long-lasting reference from one table to another.

> I thought this special case is where the new xid access method would come
> in.

Good point, but (AFAIK) you could only use it for tables that you were
sure no other client was updating in parallel.  Otherwise you might be
updating a just-obsoleted tuple.  Or is there a solution for that?

> Is someone still working on the xid access ?

I think we have the ability to refer to CTID in WHERE now, but not yet an
access method that actually makes it fast...
        regards, tom lane