What you're looking for sounds like and extended (destructive) version
of what autovacuum does.
So you might try to look at the statistics tables like autovacuum does.
I don't know how it does that, but it seems that that way you'd be able
to incrementally have approximate information about wha
I have a table that is essentially a log where new entries are streaming in
continually and from time to time I throw old entries away to
keep the table from growing.
I understand that in addition to issue a
DELETE FROM log WHERE date < xxx
I also need to issue a
VACUUM log
so that new entri
