Tom Lane pisze:
> The reason we don't automatically translate OVERLAPS is that the spec's
> definition of OVERLAPS is too weird for that to work; in particular
> it demands a true result for some cases in which one of the four
> endpoints is NULL, which'd be pretty hard to do with an interval-style
> index.
shame, I just work on a thing that would benefit from index that could
be used in OVERLAPS. I don't know psql internals , except for how GiST
works, hence my question.
thanks for the answer.