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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/06/09 11:21:46 UTC

[GitHub] [arrow] jorisvandenbossche commented on pull request #10486: ARROW-13016: [C++][Compute] Support Null type in Sum/Mean/MinMax aggregation

jorisvandenbossche commented on pull request #10486:
URL: https://github.com/apache/arrow/pull/10486#issuecomment-857612059


   One problem with supporting this for the "null" type, is that a sum of an empty array (empty to start with or after skipping all the nulls) can be defined as 0 (depending on the value of the `min_count` parameter), while for "null" type that can of course only be null.


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