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fastplyr (version 0.2.0)

f_distinct: Find distinct rows

Description

Like dplyr::distinct() but faster when lots of groups are involved.

Usage

f_distinct(
  data,
  ...,
  .keep_all = FALSE,
  sort = FALSE,
  order = sort,
  .by = NULL,
  .cols = NULL
)

Value

A data.frame of distinct groups.

Arguments

data

A data frame.

...

Variables used to find distinct rows.

.keep_all

If TRUE then all columns of data frame are kept, default is FALSE.

sort

Should result be sorted? Default is FALSE. When order = FALSE this option has no effect on the result.

order

Should the groups be calculated as ordered groups? Setting to TRUE may sometimes offer a speed benefit, but usually this is not the case. The default is FALSE.

.by

(Optional). A selection of columns to group by for this operation. Columns are specified using tidy-select.

.cols

(Optional) alternative to ... that accepts a named character vector or numeric vector. If speed is an expensive resource, it is recommended to use this.