nealrichardson commented on a change in pull request #12533:
URL: https://github.com/apache/arrow/pull/12533#discussion_r818136658
##########
File path: r/R/dplyr.R
##########
@@ -151,8 +151,14 @@ dim.arrow_dplyr_query <- function(x) {
rows <- NA_integer_
} else if (isTRUE(x$filtered_rows)) {
rows <- x$.data$num_rows
- } else {
+ } else if (query_on_dataset(x)) {
+ # TODO: do this with an ExecPlan instead of Scanner?
Review comment:
```suggestion
# TODO: do this with an ExecPlan instead of Scanner (after ARROW-12311)?
# See also https://github.com/apache/arrow/pull/12533/files#r818129459
```
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