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 exercício faz parte do curso
Joining Data with data.table in R
Instruções do exercício
Inner join population to capitals using the data.table syntax.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Inner join with the data.table syntax
___[population, ___, ___]