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https://issues.apache.org/jira/browse/SPARK-23736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-23736:
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Assignee: (was: Apache Spark)
> collection function: concat_arrays
> ----------------------------------
>
> Key: SPARK-23736
> URL: https://issues.apache.org/jira/browse/SPARK-23736
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Marek Novotny
> Priority: Major
>
> Implement the _concat_arrays_ function that merges two or more array columns
> into one. If any of children values is null, the function should return null.
> {{def concat_arrays(columns : Column*): Column }}
> Example:
> [1, 2, 3], [10, 20, 30], [100, 200] => [1, 2, 3,10, 20, 30,100, 200]
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