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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/10/19 13:41:46 UTC

[GitHub] [arrow] ianmcook commented on a change in pull request #11425: ARROW-14304: [R] Update news for 6.0.0

ianmcook commented on a change in pull request #11425:
URL: https://github.com/apache/arrow/pull/11425#discussion_r731879881



##########
File path: r/NEWS.md
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@@ -21,32 +21,64 @@
 
 There are now two ways to query Arrow data:
 
-## 1. Grouped aggregation in Arrow
+## 1. Expanded Arrow-native queries: aggregation and joins
 
 `dplyr::summarize()`, both grouped and ungrouped, is now implemented for Arrow Datasets, Tables, and RecordBatches. Because data is scanned in chunks, you can aggregate over larger-than-memory datasets backed by many files. Supported aggregation functions include `n()`, `n_distinct()`, `min(),` `max()`, `sum()`, `mean()`, `var()`, `sd()`, `any()`, and `all()`. `median()` and `quantile()` with one probability are also supported and currently return approximate results using the t-digest algorithm.
 
+Along with `summarize()`, you can also call `count()`, `tally()`, and `distinct()`, which effectively wrap `summarize()`.
+
 This enhancement does change the behavior of `summarize()` and `collect()` in some cases: see "Breaking changes" below for details.
 
-New compute functions include `str_to_title()` and `strftime()`.
+In addition to `summarize()`, equality joins (`left_join()`, `inner_join()`, `semi_join()`, et al.) are also supported natively in Arrow.

Review comment:
       Let's just list all these instead of using "et al."
   ```suggestion
   In addition to `summarize()`, mutating and filtering equality joins (`inner_join()`, `left_join()`, `right_join()`, `full_join()`, `semi_join()`, and `anti_join()`) with are also supported natively in Arrow.
   ```




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