在一组重叠的版本编号区间中，找到每个时间点的最新版本

I'm working with a set of date intervals where each interval has a version number and new intervals will frequently overlap old ones, or even be subsets of them. From this data I need to calculate a new set of intervals that shows the most recent version number, at each point in time. Is there a set-based solution to this problem?I'm working with a set of date intervals where