Tom Lane <tgl@sss.pgh.pa.us> writes:
> As it happens, the original Berkeley-era Postgres did indeed add
> creation and deletion timestamps to every row, as part of their "time
> travel" feature. That got ripped out very soon after the code left
> Berkeley, because the overhead was just unacceptable ... and our
> threshold for unacceptable performance was a whole lot higher then
> than it is today ...
>
> It's worth noting in connection with this Joe Hellerstein's description
> of Berkeley-era Postgres:
> http://archives.postgresql.org/pgsql-hackers/2002-06/msg00085.php
The followups are fascinating too. The next three messages immediately begin
discussing how to get back this feature at least as an option.
--
greg