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https://issues.apache.org/jira/browse/SPARK-8267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14578559#comment-14578559
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Cheng Hao commented on SPARK-8267:
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I am working on this.
> string function: trim
> ---------------------
>
> Key: SPARK-8267
> URL: https://issues.apache.org/jira/browse/SPARK-8267
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> trim(string A): string
> Returns the string resulting from trimming spaces from both ends of A. For
> example, trim(' foobar ') results in 'foobar'
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