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Posted to jira@arrow.apache.org by "Ian Cook (Jira)" <ji...@apache.org> on 2021/09/21 04:13:00 UTC

[jira] [Created] (ARROW-14051) [R] Handle conditionals enclosing aggregate expressions

Ian Cook created ARROW-14051:
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             Summary: [R] Handle conditionals enclosing aggregate expressions
                 Key: ARROW-14051
                 URL: https://issues.apache.org/jira/browse/ARROW-14051
             Project: Apache Arrow
          Issue Type: Improvement
          Components: R
            Reporter: Ian Cook


This type of {{summarise()}} expression does not work in arrow:
{code:r}
Table$create(x = c(0, 1, 1), y = c(2, 3, 5), z = c(8, 13, 21)) %>%
  group_by(x) %>%
  summarise(r = ifelse(n() > 1, mean(y), mean(z))){code}



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