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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-259) Add PERCENTILE aggregate function
Date Sun, 28 Feb 2010 09:39:06 GMT

     [ https://issues.apache.org/jira/browse/HIVE-259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-259:
----------------------------

    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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