Hi pá 5. 7. 2019 v 18:48 odesílatel Jeff Davis <pg...@j-davis.com> napsal:
> On Fri, 2019-07-05 at 07:58 +0200, Pavel Stehule wrote: > > The question is naming - should be this agg function named > > "range_agg", and multi range agg "multirange_agg"? Personally, I have > > not a problem with range_agg, and I have not a problem so it is based > > on union operation. It is true so only result of union can be > > implemented as range simply. When I though about multi range result, > > then there are really large set of possible algorithms how to do some > > operations over two, three values. > > Hi Pavel, > > Can you explain in more detail? Would an intersection-based aggregate > be useful? If so, and we implement it in the future, what would we call > it? > Intersection can be interesting - you can use it for planning - "is there a intersection of free time ranges?" About naming - what range_union_agg(), range_intersect_agg() ? Regards Pavel > > Regards, > Jeff Davis > > >
