brancz opened a new issue, #21150:
URL: https://github.com/apache/datafusion/issues/21150

   ### Is your feature request related to a problem or challenge?
   
   min/max doesn't support dictionary encoded arrays
   
   ### Describe the solution you'd like
   
   Just allow min/max tracked scalars to be coerced from dicts.
   
   ### Describe alternatives you've considered
   
   Casting my dict to flat, but bad idea for performance, that why I'm looking 
into this.
   
   ### Additional context
   
   I already have the code for this, so just opening this for tracking purposes.
   
   @alamb 


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