Peter Eisentraut <peter_e@gmx.net> writes:
> I have noticed that AND and TRAILING could be made ColLabel's without
> further changes. Currently they are completely reserved. (This is
> especially odd given that OR is a ColLabel.) Would that be okay to
> change?
If you don't get shift/reduce conflicts, go for it.
> (For the interested, the only other completely reserved tokens are TYPE
> and AS.)
I suspect we're stuck on that for AS. However, TYPE is actually allowed
as a ColId, via the 'generic' production, so in reality it's not
reserved.
regards, tom lane