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https://issues.apache.org/jira/browse/SPARK-27701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-27701:
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Assignee: Apache Spark
> Extend NestedColumnAliasing to more nested field cases
> ------------------------------------------------------
>
> Key: SPARK-27701
> URL: https://issues.apache.org/jira/browse/SPARK-27701
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Liang-Chi Hsieh
> Assignee: Apache Spark
> Priority: Major
>
> {{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.
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