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https://issues.apache.org/jira/browse/HIVE-259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Shao updated HIVE-259:
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Attachment: HIVE-259.5.patch
We take the method recommended by NIST.
See http://en.wikipedia.org/wiki/Percentile#Alternative_methods
> Add PERCENTILE aggregate function
> ---------------------------------
>
> Key: HIVE-259
> URL: https://issues.apache.org/jira/browse/HIVE-259
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Venky Iyer
> Assignee: Jerome Boulon
> Attachments: HIVE-259-2.patch, HIVE-259-3.patch, HIVE-259.1.patch,
> HIVE-259.4.patch, HIVE-259.5.patch, HIVE-259.patch, jb2.txt, Percentile.xlsx
>
>
> Compute atleast 25, 50, 75th percentiles
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