viirya commented on issue #24525: [SPARK-27633][SQL] Remove redundant aliases in NestedColumnAliasing URL: https://github.com/apache/spark/pull/24525#issuecomment-492478564 Thanks for review @dongjoon-hyun I understood your concerns. Thanks for test, also. Can you provide few cases that you think might be problematic, if you find any? In case here, the intent is to see the child of a nested field accessor is already presented. Do you think it is more robust, if comparing them exactly equally, not semantically?
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