alamb commented on issue #9403:
URL: 
https://github.com/apache/arrow-datafusion/issues/9403#issuecomment-2031962735

   BTW the DuckDB paper (which I have not yet read) seems to describe a very 
similar layout for variable length strings: 
https://duckdb.org/2024/03/29/external-aggregation
   
   
![image](https://github.com/apache/arrow-datafusion/assets/490673/58ca5d8f-0e19-4de4-a7a4-1fc987c21f2d)
   


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