Inner join with the data.table syntax
In the last exercise, you right joined population to capitals. The result contained all rows from population and had some NAs. In this exercise, you will perform an inner join instead, retaining rows only from both the tables.
Deze oefening maakt deel uit van de cursus
Joining Data with data.table in R
Oefeninstructies
Inner join population to capitals using the data.table syntax.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Inner join with the data.table syntax
___[population, ___, ___]