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.
Latihan ini adalah bagian dari kursus
Joining Data with data.table in R
Petunjuk latihan
Inner join population to capitals using the data.table syntax.
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
# Inner join with the data.table syntax
___[population, ___, ___]