single_table

group_by.dtplyr_step

.data

In <code>group_by()</code>, variables or computations to group by.
In <code>ungroup()</code>, variables to remove from the grouping.

When <code>FALSE</code>, the default, <code>group_by()</code> will
override existing groups. To add to the existing groups, use
<code>.add = TRUE</code>.
This argument was previously called <code>add</code>, but that prevented
creating a new grouping variable called <code>add</code>, and conflicts with
our naming conventions.

If <code>TRUE</code>, will automatically arrange the output of
subsequent grouped operations by group. If <code>FALSE</code>, output order will be
left unchanged. In the generated data.table code this switches between
using the <code>keyby</code> (<code>TRUE</code>) and <code>by</code> (<code>FALSE</code>) arguments.

arrange

This documents differences between standard dplyr verbs and their
data.table instantiation.

Provides a data.table backend for 'dplyr'. The goal of 'dtplyr'
is to allow you to write 'dplyr' code that is automatically translated to
the equivalent, but usually much faster, data.table code.

single_table: Single table operations

Description

Usage

Arguments