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Posted to jira@arrow.apache.org by "Jonathan Keane (Jira)" <ji...@apache.org> on 2021/11/02 19:18:00 UTC

[jira] [Assigned] (ARROW-14051) [R] Handle conditionals enclosing aggregate expressions

     [ https://issues.apache.org/jira/browse/ARROW-14051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Keane reassigned ARROW-14051:
--------------------------------------

    Assignee: Dewey Dunnington

> [R] Handle conditionals enclosing aggregate expressions
> -------------------------------------------------------
>
>                 Key: ARROW-14051
>                 URL: https://issues.apache.org/jira/browse/ARROW-14051
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Ian Cook
>            Assignee: Dewey Dunnington
>            Priority: Major
>              Labels: query-engine
>
> This type of {{summarise()}} expression does not work in arrow:
> {code:r}
> Table$create(x = c(0, 1, 1), y = c(2, 3, 5), z = c(8, 13, 21)) %>%
>   group_by(x) %>%
>   summarise(r = ifelse(n() > 1, mean(y), mean(z))){code}



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