ozankabak commented on PR #13805:
URL: https://github.com/apache/datafusion/pull/13805#issuecomment-2550590605

   I wonder if we should change `across_partitions` to an `enum`; i.e.
   ```rust
   enum PartitionValues {
       Uniform(Option<ScalarValue>),
       Heterogenous(Option<Vec<ScalarValue>>)
   }
   ```
   
   with `Uniform` meaning that all partitions have the same value given in the 
payload (if known), and `Heterogenous` meaning partitions can have different 
constant values (each of which is given in the vector, if known).


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