alamb commented on issue #10316:
URL: https://github.com/apache/datafusion/issues/10316#issuecomment-2091665546

   > What comes to my mind is that if we can successfully bring the 
`statistics` to `SortPreservingMerge`, it could handle this work without a 
separate operator (This will probably need a change in `statistics` API to 
return statistics for each partition).
   
   I think this approach would work as well -- or maybe just a flag on the 
`SortPreservingMerge` and a different stream rather than an entirely 
`ExecutionPlan` 🤔 
   
   Per partition statistics is an interesting idea 🤔  -- it certainly makes 
sense for things like data sources. I wonder how generally useful it could be 


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