subject:"\[GitHub\] \[arrow\] alamb edited a comment on pull request #8222\: ARROW\-10043\: \[Rust\]\[DataFusion\] Implement COUNT\(DISTINCT col\)"

[GitHub] [arrow] alamb edited a comment on pull request #8222: ARROW-10043: [Rust][DataFusion] Implement COUNT(DISTINCT col)

2020-09-22 Thread GitBox

alamb edited a comment on pull request #8222: URL: https://github.com/apache/arrow/pull/8222#issuecomment-696842287 @drusso I think you are correct that we would need a separate group by operator for each count distinct and then combine them together: so `SELECT c1, COUNT(DISTINCT

[GitHub] [arrow] alamb edited a comment on pull request #8222: ARROW-10043: [Rust][DataFusion] Implement COUNT(DISTINCT col)

2020-09-22 Thread GitBox

alamb edited a comment on pull request #8222: URL: https://github.com/apache/arrow/pull/8222#issuecomment-696842287 @drusso I think you are correct that we would need a separate group by operator for each count distinct and then combine them together: so `SELECT c1, COUNT(DISTINCT