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https://issues.apache.org/jira/browse/SPARK-17299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15451919#comment-15451919
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Sean Owen commented on SPARK-17299:
-----------------------------------
We should fix this now IMHO. I'm not sure about the other change which is both
large, and less useful in Spark SQL where you can perform any transformations
you want easily in code.
> TRIM/LTRIM/RTRIM strips characters other than spaces
> ----------------------------------------------------
>
> Key: SPARK-17299
> URL: https://issues.apache.org/jira/browse/SPARK-17299
> Project: Spark
> Issue Type: Bug
> Components: Documentation, SQL
> Affects Versions: 2.0.0
> Reporter: Jeremy Beard
> Priority: Minor
>
> TRIM/LTRIM/RTRIM docs state that they only strip spaces:
> http://spark.apache.org/docs/2.0.0/api/java/org/apache/spark/sql/functions.html#trim(org.apache.spark.sql.Column)
> But the implementation strips all characters of ASCII value 20 or less:
> https://github.com/apache/spark/blob/v2.0.0/common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java#L468-L470
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