Jeff Davis <pg...@j-davis.com> writes: > I tested in gdb, and it calls HeapTupleSatisfiesMVCC, until I VACUUM a > few times, and then it doesn't call it any more. So, apparently the seq > scan optimization _is_ there. And that means it is correctness-critical.
The page header bit is critical. Not the VM. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers