On Mon, 9 Oct 2000, Tom Lane wrote:
> The Hermit Hacker <scrappy@hub.org> writes:
> >> What happens if you crash partway through?
>
> > what happens if you crash partway through a vacuum?
>
> Nothing. Vacuum is crash-safe. ALTER TABLE should be too.
Sorry, that's what I meant ... why should marking a column as 'deleted'
and running a 'vacuum' to clean up the physical table be any less
crash-safe?