On Mon, Jul 24, 2017 at 9:51 AM, Claudio Freire <klaussfre...@gmail.com> wrote: > My point was that the TID doesn't have to point to an actual tuple. > > It's more of a keyspace thing, so it doesn't need to match real > tuples, it can just divide the keyspace with an arbitrary cutoff, and > should be cheapter to maintain without that requirement.
I agree, but unless you're using normalized keys, then I don't see that you get much useful leeway from using fake or truncated TID values. Presumably the comparison logic will be based on comparing an ItemPointerData field, which is impractical to truncate. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers