dongjoon-hyun edited a comment on issue #24637: [SPARK-27707][SQL] Prune unnecessary nested fields from Generate URL: https://github.com/apache/spark/pull/24637#issuecomment-512872770 Thank you for adding more. Then, please do a white list approach for those four expressions. ``` case p @ Project(projectList, g @ Generate(e: Explode, _, _, _, _, _)) if canPruneXXX(e) && ``` cc @cloud-fan and @gatorsmile
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