[jira] [Commented] (ARROW-11090) [C++] Support temporal arithmetic ({time,date}{32,64}, timestamp, interval)

["Dragoș Moldovan-Grünfeld (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17503497#comment-17503497 ] 

Dragoș Moldovan-Grünfeld commented on ARROW-11090:
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Apologies if this has been discussed, but I didn't see any mention of {{rollback}}. I don't think we currently support rolling a date backward ({{rollback}}) or forward. Is my understanding correct?

> [C++] Support temporal arithmetic ({time,date}{32,64}, timestamp, interval)
> ---------------------------------------------------------------------------
>
>                 Key: ARROW-11090
>                 URL: https://issues.apache.org/jira/browse/ARROW-11090
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Jonathan Keane
>            Priority: Major
>              Labels: kernel
>             Fix For: 8.0.0
>
>
> [It appears that only subtract on two timestamps is currently supported|https://github.com/apache/arrow/commit/dd94a5809b56b32fe2fb538f688bf568d9642e3b] when there is more supported, we should include support for that in R.
>  
> This should also cover the ability to do with and without rollback (so have the ability to do e.g. 2021-03-30 minus 1 month and either get a null back, or 2021-02-28), plus the ability to specify whether to rollback to the first or last, and whether to preserve or rest the time.)



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