Nicola Crane created ARROW-14947:
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Summary: [C++] Implement maths with timestamps?
Key: ARROW-14947
URL: https://issues.apache.org/jira/browse/ARROW-14947
Project: Apache Arrow
Issue Type: Sub-task
Components: C++
Reporter: Nicola Crane
Please could we have maths with timestamps implemented?
In order to implement some of the functionality I'd like in R, I need to be
able to do maths with dates. For example:
* Addition and subtraction: Timestamp + Duration = Timestamp (with and without
rollback so have 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.
See https://lubridate.tidyverse.org/reference/mplus.html for documentation of
the R functionality.
* Multiplying Durations: Duration * Numeric = Duration
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