Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com> writes:
> Just a heads-up: each of those ALTER's will rewrite the table, so unless your database is tiny this will be a slow process. There's ways to work around that, but they're significantly more complicated.
I think he's trying to get rid of all the blank-padding he's got right
now, so table rewrites are unavoidable.
regards, tom lane