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Posted to issues@madlib.apache.org by "Frank McQuillan (JIRA)" <ji...@apache.org> on 2016/03/24 16:36:25 UTC

[jira] [Updated] (MADLIB-808) Improve documentation / Handling of quartiles/ntiles in Postgres

     [ https://issues.apache.org/jira/browse/MADLIB-808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Frank McQuillan updated MADLIB-808:
-----------------------------------
    Labels:   (was: TriagePending)

> Improve documentation / Handling of quartiles/ntiles in Postgres
> ----------------------------------------------------------------
>
>                 Key: MADLIB-808
>                 URL: https://issues.apache.org/jira/browse/MADLIB-808
>             Project: Apache MADlib
>          Issue Type: Request
>            Reporter: Caleb Welton
>            Assignee: Rahul Iyer
>
> Currently the Summary() function will silently decide not to calculate quartile values on Postgres or GPDB < 4.2 due to the lack of support for the SQL Standard PERCENTILE_CONT() function on those platforms/versions.  
> This limitation should be clearly documented and a warning should be produced if these statistics are requested on a platform that does not support them.



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