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https://issues.apache.org/jira/browse/ARROW-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419184#comment-17419184
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Joris Van den Bossche commented on ARROW-11090:
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For the date arithmetic in general, some questions:
- {{subtract(date, date)}} is listed as returning {{duration}}, but in theory
could also give a interval? (number of days)
- For kernels involving {{date}} input and result in {{timestamp}}, do we
generally consider those date/timestamps as naive or as UTC?
(another option could be to require the user to first convert the date to
timestamp themselves, before adding a duration, in which case you can be
explicit about the timezone)
> [C++] Support temporal arithmetic ({time,date}{32,64}, timestamp, duration)
> ---------------------------------------------------------------------------
>
> 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: 7.0.0
>
>
> [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.
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