{As of 2021, the airport is rated by Skytrax as being the fourth-most effective airport on the planet. Skytrax has also rated the airport as the entire world's finest Intercontinental transit airport and among the planet's cleanest airports.
a : a variety of dwelling things getting some organic romantic relationship b : a mix of atoms usually found together inside a molecule a methyl group
Output: As you'll be able to see in the above mentioned output the students with both equally exactly the same Issue and Yr are put in exactly the same group. And people whose only SUBJECT is similar although not YEAR belong to diverse groups. So here We now have grouped the desk Based on two group columns or multiple column.