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https://issues.apache.org/jira/browse/SPARK-21117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051457#comment-16051457
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Apache Spark commented on SPARK-21117:
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User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/18323
> Built-in SQL Function Support - WIDTH_BUCKET
> --------------------------------------------
>
> Key: SPARK-21117
> URL: https://issues.apache.org/jira/browse/SPARK-21117
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Yuming Wang
>
> For a given expression, the {{WIDTH_BUCKET}} function returns the bucket
> number into which the value of this expression would fall after being
> evaluated.
> {code:sql}
> WIDTH_BUCKET (expr , min_value , max_value , num_buckets)
> {code}
> Ref:
> https://docs.oracle.com/cd/B28359_01/olap.111/b28126/dml_functions_2137.htm#OLADM717
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