> > 4. Is there any worth in me submitting a patch that will allow
> rudimentary
> > column type changing, so long as the types are binary compatible???
>
> Hmm. Seems like that case, and the various ones involving adjustment of
> char/varchar length by hacking atttypmod, would be useful to support via
> ALTER COLUMN even if we don't have a full implementation. Essentially
> this would be taking the existing folklore about safe ways to hack
> pg_attribute and reducing them to code --- why not do it?
Can you only reduce the length of a varchar (say) or can you actually
increase them as well?
Chris