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https://issues.apache.org/jira/browse/SPARK-25967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16678700#comment-16678700
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kevin yu commented on SPARK-25967:
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Hello Victor: I see, by SQL2003 standard, the TRIM function removes spaces by 
default. 

> sql.functions.trim() should remove trailing and leading tabs
> ------------------------------------------------------------
>
>                 Key: SPARK-25967
>                 URL: https://issues.apache.org/jira/browse/SPARK-25967
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.1.0, 2.2.0, 2.3.2
>            Reporter: Victor Sahin
>            Priority: Minor
>
> sql.functions.trim removes only trailing and leading whitespaces. Removing 
> tabs as well helps use the function for the same use case e.g. artifact 
> cleaning.



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