viirya opened a new pull request #24599: [SPARK-27701][SQL] Extend NestedColumnAliasing to more nested field cases URL: https://github.com/apache/spark/pull/24599 ## What changes were proposed in this pull request? `NestedColumnAliasing` rule covers `GetStructField` only, currently. It means that some nested field extraction expressions aren't pruned. For example, if only accessing a nested field in an array of struct, this column isn't pruned. This patch extends the rule to cover such cases. ## How was this patch tested? Added tests.
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