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Posted to jira@arrow.apache.org by "Will Ayd (Jira)" <ji...@apache.org> on 2021/12/08 19:19:00 UTC

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

Will Ayd created ARROW-15032:
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             Summary: 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
            Reporter: Will Ayd


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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