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.
Este ejercicio forma parte del curso
Joining Data with data.table in R
Instrucciones del ejercicio
Inner join population to capitals using the data.table syntax.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Inner join with the data.table syntax
___[population, ___, ___]