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Posted to jira@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2021/08/05 14:41:00 UTC

[jira] [Created] (ARROW-13574) [C++] Implement "count(*)" hash aggregate kernel

David Li created ARROW-13574:
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             Summary: [C++] Implement "count(*)" hash aggregate kernel
                 Key: ARROW-13574
                 URL: https://issues.apache.org/jira/browse/ARROW-13574
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: David Li


The current "count" hash aggregate kernel counts either all non-null or all null values, but doesn't count all values regardless of nullity (i.e. SQL "count(*)" or Pandas size()).



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