Stephen Frost <sfrost@snowman.net> writes:
> I'd tend to agree that it seems like a bug but I'm a little mystified as
> to why an 'order by' would be desired (or allowed) for a 'create table as'
> at all. Allowing it seems to imply it has some meaning.
By that logic we should disallow CLUSTER, REINDEX, and a host of other
things that are meaningless according to the SQL data model ;-)
But if you want a plausible use-case, the combination of ORDER BY and
LIMIT certainly seems interesting and useful, even if each one alone
is debatable.
regards, tom lane