Neil Conway <nconway@klamath.dyndns.org> writes:
> I can understand not allowing COPY FROM to target a view
> (or at least, a view without an insertion rule defined) --
> but is there a similar reason for disallowing copying data
> out of a view?
Allowing either would take COPY out of the realm of utility statements
and into the realm of plannable queries --- in particular, COPY from a
view would have to have full SELECT capability, with only a slightly
different user interface for delivering the tuples.
This would not necessarily be a bad idea ... but it would be a major
rewrite of COPY.
regards, tom lane