Get startedGet started for free

Multiple data.tables, multiple keys

Three new data.tables are available in your workspace: area, capitals, and population, containing basic statistics about the geography and demographics of Australia.

Which columns can be used to match rows across these three data.tables?

This exercise is part of the course

Joining Data with data.table in R

View Course

Hands-on interactive exercise

Turn theory into action with one of our interactive exercises

Start Exercise