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https://issues.apache.org/jira/browse/ARROW-14209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ian Cook updated ARROW-14209:
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Description:
ARROW-13620 and ARROW-14036 added support for the {{n_distinct()}} function in
the dplyr verb {{summarise()}} but only with a single argument. Add support for
multiple arguments to {{n_distinct()}}. This should return the number of unique
combinations of values in the specified columns/expressions.
See the comment about this here:
[https://github.com/apache/arrow/pull/11257#discussion_r720873549]
was:
ARROW-13620 and ARROW-14036 added support for the {{n_distinct()}} in function
in the dplyr verb {{summarise()}} but only with a single argument. Add support
for multiple arguments to {{n_distinct()}}. This should return the number of
unique combinations of values in the specified columns/expressions.
See the comment about this here:
https://github.com/apache/arrow/pull/11257#discussion_r720873549
> [R] Allow multiple arguments to n_distinct()
> --------------------------------------------
>
> Key: ARROW-14209
> URL: https://issues.apache.org/jira/browse/ARROW-14209
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Ian Cook
> Priority: Major
> Fix For: 7.0.0
>
>
> ARROW-13620 and ARROW-14036 added support for the {{n_distinct()}} function
> in the dplyr verb {{summarise()}} but only with a single argument. Add
> support for multiple arguments to {{n_distinct()}}. This should return the
> number of unique combinations of values in the specified columns/expressions.
> See the comment about this here:
> [https://github.com/apache/arrow/pull/11257#discussion_r720873549]
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