Bruce Momjian <bruce@momjian.us> writes:
> Also interestingly, "now" without quotes requires parentheses to make it
> a function call:
I'm not sure why you find that surprising, or why you think that
'now()'::timestamptz is a function call. (Well, it is a call of
timestamptz_in, but not of the SQL function now().) Documentation
that is equally confused won't help any.
regards, tom lane