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https://issues.apache.org/jira/browse/SPARK-28123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16899349#comment-16899349
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EdisonWang commented on SPARK-28123:
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seems it is the same with trim() on both sides?
> String Functions: Add support btrim
> -----------------------------------
>
> Key: SPARK-28123
> URL: https://issues.apache.org/jira/browse/SPARK-28123
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> ||Function||Return Type||Description||Example||Result||
> |{{btrim(_{{string}}_}}{{bytea}}{{,
> _{{bytes}}_}}{{bytea}}{{)}}|{{bytea}}|Remove the longest string containing
> only bytes appearing in _{{bytes}}_from the start and end of
> _{{string}}_|{{btrim('\000trim\001'::bytea, '\000\001'::bytea)}}|{{trim}}|
> More details: https://www.postgresql.org/docs/11/functions-binarystring.html
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