juliuszsompolski commented on issue #26942: [SPARK-30301][SQL] Fix wrong 
results when datetimes as fields of complex types
URL: https://github.com/apache/spark/pull/26942#issuecomment-603740898
   I believe the new behaviour is more sensible than the previous - returning 
just `[B@ba4f370` was useless; returning the String made from Binary blob at 
least returns some content... I know some systems try to parse back these 
results as JSON to be able to explore the nested data - e.g. I think PowerBI 
does that with what thriftserver returns... I fear that if the binary has some 
strange contents, it would break the JSON parsing... But I haven't tested it.
   I don't expect anyone using this kind of type combination and running into 
issues in practice...

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