Jeff Davis <[email protected]> wrote: > ">>" means "strictly right of" > "<<" means "strictly left of" > "-|-" means "adjacent" (touching but not overlapping) > > I'm open to suggestion about how those behave with empty ranges. OK, that still leaves a lot to the imagination, though. To try to clarify in *my* mind: "empty range" ============= Zero length? If so, is it fixed at some point, but empty? '(x,x)'? '[x,x)'? Is it everything? '[-inf,+inf]'? Is it really meaningfully distinct from NULL? Where do you see it being useful? -Kevin
-- Sent via pgsql-hackers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
