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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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Xiao Li updated SPARK-23736:
----------------------------
    Issue Type: Sub-task  (was: New Feature)
        Parent: SPARK-23899

> Extension of the concat function to support array columns
> ---------------------------------------------------------
>
>                 Key: SPARK-23736
>                 URL: https://issues.apache.org/jira/browse/SPARK-23736
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Marek Novotny
>            Priority: Major
>
> Extend the _concat_ function to also support array columns.
> Example:
> {{concat(array(1, 2, 3), array(10, 20, 30), array(100, 200)) => [1, 2, 3,10, 
> 20, 30,100, 200] }}



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