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https://issues.apache.org/jira/browse/SPARK-26965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-26965:
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Assignee: (was: Apache Spark)
> Makes ElementAt nullability more precise
> ----------------------------------------
>
> Key: SPARK-26965
> URL: https://issues.apache.org/jira/browse/SPARK-26965
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Takeshi Yamamuro
> Priority: Minor
>
> In master, ElementAt nullable is always true;
> https://github.com/apache/spark/blob/be1cadf16dc70e22eae144b3dfce9e269ef95acc/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala#L1977
> But, If input key is foldable, we could make its nullability more precise.
> This fix is the same with SPARK-26747 and -SPARK-26637-
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