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https://issues.apache.org/jira/browse/ARROW-11090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419183#comment-17419183
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Joris Van den Bossche commented on ARROW-11090:
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Note that the example you show is for timestamp / interval arithmetic, while
for now this issue (and all the child tasks you created) are for timestamp /
timestamp or timestamp / duration, which are generally much simpler operations
than once intervals are involved (which don't have a fixed length).
> Perhaps another important implementation detail is that many date arithmetic
> operations are implemented by first converting a date to a timestamp and then
> calling the corresponding implementation for timestamp
The date64 is basically already the same memory layout as timestamp[ms]. For
date32 (days since epoch) that would be a bit more costly conversion.
> [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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