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From "Marek Novotny (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-23736) collection function: concat_arrays
Date Mon, 19 Mar 2018 12:06:00 GMT
Marek Novotny created SPARK-23736:
-------------------------------------

             Summary: collection function: concat_arrays
                 Key: SPARK-23736
                 URL: https://issues.apache.org/jira/browse/SPARK-23736
             Project: Spark
          Issue Type: Story
          Components: SQL
    Affects Versions: 2.4.0
            Reporter: Marek Novotny


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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