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https://issues.apache.org/jira/browse/SPARK-40688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17655734#comment-17655734
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Apache Spark commented on SPARK-40688:
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User 'vinodkc' has created a pull request for this issue:
https://github.com/apache/spark/pull/39449
> Support data masking built-in function 'mask_first_n'
> ------------------------------------------------------
>
> Key: SPARK-40688
> URL: https://issues.apache.org/jira/browse/SPARK-40688
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Vinod KC
> Priority: Minor
>
> Support data masking built-in function *mask_first_n*
> Return a masked version of str with the first n values masked. Upper case
> letters should be converted to "X", lower case letters should be converted to
> "x" and numbers should be converted to "n". For example,
> mask_first_n("1234-5678-8765-4321", 4) results in nnnn-5678-8765-4321.
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