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https://issues.apache.org/jira/browse/SPARK-13436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157867#comment-15157867
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Apache Spark commented on SPARK-13436:
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User 'mgummelt' has created a pull request for this issue:
https://github.com/apache/spark/pull/11311
> Add parameter drop to subsetting operator [
> -------------------------------------------
>
> Key: SPARK-13436
> URL: https://issues.apache.org/jira/browse/SPARK-13436
> Project: Spark
> Issue Type: Sub-task
> Components: SparkR
> Reporter: Oscar D. Lara Yejas
>
> Parameter drops allows to return a vector/data.frame accordingly if the
> result of subsetting a data.frame has one single column (see example below).
> The same behavior is needed on a DataFrame.
> > head(iris[, 1, drop=F])
> Sepal.Length
> 1 5.1
> 2 4.9
> 3 4.7
> 4 4.6
> 5 5.0
> 6 5.4
> > head(iris[, 1, drop=T])
> [1] 5.1 4.9 4.7 4.6 5.0 5.4
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