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https://issues.apache.org/jira/browse/SPARK-33947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jiaan.geng resolved SPARK-33947.
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Resolution: Won't Fix
> String functions: Trim/Ltrim/Rtrim support byte array
> -----------------------------------------------------
>
> Key: SPARK-33947
> URL: https://issues.apache.org/jira/browse/SPARK-33947
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: jiaan.geng
> Assignee: Apache Spark
> Priority: Major
>
> String functions: Trim/Ltrim/Rtrim support byte arrays
> The mainstream database support this feature show below:
> Teradata
> https://docs.teradata.com/r/756LNiPSFdY~4JcCCcR5Cw/vd81iWAoGj0cEeGBMAfF9A
> Vertica
> https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/Functions/String/BTRIM.htm?tocpath=SQL%20Reference%20Manual%7CSQL%20Functions%7CString%20Functions%7C_____5
> Redshift
> https://docs.aws.amazon.com/redshift/latest/dg/r_BTRIM.html
> Postgresql
> https://www.postgresql.org/docs/11/functions-binarystring.html
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