On Thu, 1 Aug 2002, Jeff Davis wrote:
> What's the easiest way to change the allowable length of a varchar attribute?
>
> I looked in pg_attribute and noticed that the allowable length of the varchar
> (+4 bytes for the actual length, presumably) was the atttypemod attribute of
> the pg_attribute relation. Is it safe to change that? I would of course need
> to be a superuser.
That should be safe to change. If you're lowering it, you should make
sure the data fits.