[jira] [Updated] (ARROW-14947) [C++] Implement maths with timestamps

["Nicola Crane (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nicola Crane updated ARROW-14947:
---------------------------------
    Summary: [C++] Implement maths with timestamps  (was: [C++] Implement maths with timestamps?)

> [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
>            Priority: Major
>
> 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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