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Posted to issues@flink.apache.org by "Timo Walther (JIRA)" <ji...@apache.org> on 2017/05/03 12:59:04 UTC

[jira] [Resolved] (FLINK-4604) Add support for standard deviation/variance

     [ https://issues.apache.org/jira/browse/FLINK-4604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timo Walther resolved FLINK-4604.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 1.3.0

Fixed in 1.3.0: 0af57fc1800d7430843a1e14bb70168bbd750389 & 72dfce40b76f31cdf54959577977a33a0082a7bb

> Add support for standard deviation/variance
> -------------------------------------------
>
>                 Key: FLINK-4604
>                 URL: https://issues.apache.org/jira/browse/FLINK-4604
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Anton Mushin
>             Fix For: 1.3.0
>
>         Attachments: 1.jpg
>
>
> Calcite's {{AggregateReduceFunctionsRule}} can convert SQL {{AVG, STDDEV_POP, STDDEV_SAMP, VAR_POP, VAR_SAMP}} to sum/count functions. We should add, test and document this rule. 
> If we also want to add this aggregates to Table API is up for discussion.



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