coracuity commented on issue #16821:
URL: https://github.com/apache/datafusion/issues/16821#issuecomment-3147382664

   @alamb it's definitely a kind of range join. Having generalized 
optimizations for that would definitely be welcome, but I think in this case I 
can outperform any join. Each partition I need to join within (field A) is 
fewer than 1000 rows and so it's embarrassingly parallelizable and extremely 
low memory usage. I need to solve how to do other 
filtering/slicing/grouping/etc of the output, though, which is why I'd like to 
expose it as a table/view to datafusion.


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