Ron Johnson <ron.l.johnson@xxxxxxx> writes: > How much does the on-disk structure of *existing* tables and indexes > change between x.y versions? > > Between, for example, 8.0 and 8.2? Enough to require a dump/reload in order to upgrade. :) Within major versions (8.2.0, 8.2.1, etc) the files are compatible so you can do in-place upgrades (except in extraordinary circumstances). -Doug
