Heikki Linnakangas <heikki@enterprisedb.com> writes:
> I've been experimenting with the idea of a so-called Block B-Tree. The
> basic idea is that instead of storing an index tuple for each heap
> tuple, we store an index tuple for each heap block. This dramatically
> reduces the size of an index, leading to savings on I/O.
VACUUM?
regards, tom lane