Rachelint commented on PR #12996:
URL: https://github.com/apache/datafusion/pull/12996#issuecomment-2452991852

   > Is it possible to somehow unify GroupValuesColumn and 
VectorizedGroupValuesColumn ?
   
   🤔I think It can unify simply,  
`VectorizedGroupValuesColumn::scalarized_intern` is similar as 
`GroupValuesColumn::intern`.
   But its logic is a bit more complex, I am afraid performance regression of 
`streaming aggregation`.


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