Jacek Pliszka created ARROW-12637:
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Summary: Range type (similar to Pandas intervals)
Key: ARROW-12637
URL: https://issues.apache.org/jira/browse/ARROW-12637
Project: Apache Arrow
Issue Type: Wish
Components: C, C++
Reporter: Jacek Pliszka
This is wish for range(interval) extension type.
Type would describe range/interval with defined start and end and would have
metadata
whether range is open/close/left-open/right-open.
Considerations:
* should it focus on integers and like or on floats as well?
* are open/semi-open cases worth the effort? Maybe not.
The most useful case might be closed range of 32bit/64bit and maybe 8bit/16bit
unsigned integers packed in twice larger integer.
This would allow computation kernels like:
* overlap joins (see R foverlaps)
* range algebra: unions, intersections, differences
* classification in Allen's interval algebra
* conversion to/from 2 columns/rows
* exploding (see Pandas explode)
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