one function

Get one value from each group

Returns one arbitrary value from the input for each group. The function is biased towards non-null values: if there is at least one non-null value for a certain group, that value is returned, and only if all the values are null for the group will the function return null.

one(...)

Arguments

• ...: Unquoted column name to pull values from.

Examples

## Not run:

mtcars |>
  arrow_table() |>
  group_by(cyl) |>
  summarize(x = one(disp))
## End(Not run)