parthchandra opened a new issue, #7434:
URL: https://github.com/apache/datafusion-comet/issues/7434

   ### What is the problem the feature request solves?
   
   `min` and `max` over `STRING` and `BINARY` run natively as plain aggregates 
(#6909), but not as window functions. A `WindowExec` with one of these falls 
back to Spark as a whole.
   
   ### Describe the potential solution
   
   Support string and binary input for windowed `min` / `max`, with the same 
frame support as numeric input.
   
   ### Additional context
   
   Listed under "Falls back to Spark" in the window function compatibility 
guide.
   


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