Alvaro Herrera <alvherre@dcc.uchile.cl> writes:
> The trick to keep in mind is that the XID comparison functions use
> "modulo" operations, _but_ there are special "frozen" XIDs that are
> always "committed" -- that's why a VACUUM FREEZE would relieve the table
> forever from this problem.
> (At least this is how I understand it -- I could be totally wrong here)
No, that's exactly correct.
regards, tom lane
