pk&lt;-

A primary key is a variable in a dataset that has a unique value for every
row. A variable must be either numeric or text type and have no duplicate or
missing values. A primary key on a dataset causes appends to that dataset
that have the rows with the same primary key value(s) as the first dataset
to update the existing rows rather than inserting new ones.

The Crunch.io service <https://crunch.io/> provides a cloud-based
data store and analytic engine, as well as an intuitive web interface.
Using this package, analysts can interact with and manipulate Crunch
datasets from within R. Importantly, this allows technical researchers to
collaborate naturally with team members, managers, and clients who prefer a
point-and-click interface.

Greg Freedman Ellis

crunch

Crunch.io Data Tools

Jonathan Keane

Mike Malecki

Neal Richardson

Gordon Shotwell

Aljaž Sluga

pk function

<dl><dt>x</dt>
<dd>a Dataset</dd>
<dt>value</dt>
<dd>For the setter, a single Variable to use as the primary key or
<code>NULL</code> to remove the primary key.</dd></dl>

Arguments

Get and set the primary key for a Crunch dataset — pk

<dl>

<dt>x</dt>
<dd>a Dataset</dd>


<dt>value</dt>
<dd>For the setter, a single Variable to use as the primary key or
<code>NULL</code> to remove the primary key.</dd>

</dl>

pk: Get and set the primary key for a Crunch dataset

Description

Usage

Value

Arguments