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https://issues.apache.org/jira/browse/SPARK-16894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15646563#comment-15646563
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Kapil Singh commented on SPARK-16894:
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The use case is similar to scala collection's take method. So, for example, one
of the input columns is an array containing product category hierarchy e.g.
[apparel, men, t-shirt, printed, ...] and I'm only interested in first n (say
3) categories. I want a function/expression on DataFrame so that I can get an
output column containing only first 3 categories e.g. [apparel, men, t-shirt]
> take function for returning the first n elements of array column
> ----------------------------------------------------------------
>
> Key: SPARK-16894
> URL: https://issues.apache.org/jira/browse/SPARK-16894
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Reporter: Kapil Singh
>
> take(inputArray, n)
> Returns array containing first n elements of inputArray
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