westonpace edited a comment on pull request #11106:
URL: https://github.com/apache/arrow/pull/11106#issuecomment-915663195


   CC @jorisvandenbossche 
   
   Also, I noticed another potential con: we do mention UUID in the pyarrow 
extension type examples.  If uuid was accepted that might weaken that example.  
However, the extension type example supports round trip.
   
   The original StackOverflow issue could almost be solved by an extension type 
except there is no way to tie an extension type into the inference logic
   
   The issue could also almost be solved by a pandas UUID extension type except 
pandas read_sql_query supports dtype but not a type-mapping mechanism that 
would allow a pandas UUID extension type to automatically be used if the column 
type was UUID.


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