dongjoon-hyun commented on issue #24525: [SPARK-27633][SQL] Remove redundant aliases in NestedColumnAliasing URL: https://github.com/apache/spark/pull/24525#issuecomment-519386468 @viirya . I has been not sure about this PR [due to the old reason](https://github.com/apache/spark/pull/24525#issuecomment-492309173), but I don't have a counter example you asked. Sorry about that. If the other committers think okay, I will not be against this PR. Thanks for working on nested column improvement, @viirya . cc @cloud-fan , @dbtsai , @gatorsmile
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