qlong commented on PR #15384:
URL: https://github.com/apache/iceberg/pull/15384#issuecomment-4760792009

   > thanks. in #16133 I've had it working with a different impl of this pr 
(something copilot did for me, separate from my main work). moving to yours is 
hitting some problems with spark parsing the normalised path coming down from 
iceberg, e.g
   > 
   > good
   > 
   > ```
   > variant_get(nested, '$.varcategory', 'int')";
   > ```
   > 
   > bad
   > 
   > ```
   > variant_get(nested, ''[$'.'varcategory'], 'int')";
   > ```
   > 
   > Switch UnboundExtract.path to the raw rather than normalized path and 
things are happy, but that makes the code brittle to all the things 
normalisation is meant to stop.
   
   @steveloughran Thanks for testing the integration, bracket representation is 
intentional. In #15385 I also change so  describe the path in bracket form.   
Does this describe change break your tests? Can you assert on bracket form for 
filters?
   
   
   


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