alamb commented on PR #7242:
URL: 
https://github.com/apache/arrow-datafusion/pull/7242#issuecomment-1676334979

   > Unfortunately, we might need to change the signature in Accumulator from 
ScalarValue to ColumnarValue. Do you think this signature change is a good 
decision for accepting the Aggregate function to process Array?
   
   I wonder if you can call `Accumulator::update_batch` instead? It is already 
possible to go from ColumnarValue --> Array via 
https://docs.rs/datafusion/latest/datafusion/logical_expr/enum.ColumnarValue.html#method.into_array


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