[jira] [Updated] (ARROW-15032) Compute Function to return Year / Month / Day

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li updated ARROW-15032:
-----------------------------
    Labels: kernel  (was: )

> Compute Function to return Year / Month / Day
> ---------------------------------------------
>
>                 Key: ARROW-15032
>                 URL: https://issues.apache.org/jira/browse/ARROW-15032
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Will Ayd
>            Priority: Minor
>              Labels: kernel
>
> Related to
> [https://stackoverflow.com/questions/70194714/how-to-return-a-structarray-from-multiple-scalar-functions/70213443#70213443]
>  
> Right now the temporal compute functions include year / month / day as separate functions. AFAICT in the implementation these all internally create a struct containing year/month/day using the date library and then return only one of the components.
>  
> From a pure efficiency perspective it might be best to just return all as one StructArray and allow the user to unpack the values. From a user perspective, I also typically want year / month / day to be bundled together, so one function call to get all three in one pass would be ideal
>  
> This might be extendable down to the timestamp structure as well



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