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create table carSales ( car varchar(25), colour varchar(10), sold int); insert into carSales values ('Benz','Black', 2), ('Benz','White', 1), ('BMW', 'Black', 3), ('BMW', 'Green' , 2), ('BMW', 'Blue', 1), ('Toyota','Yellow', 7), ('Toyota','Red', 5), ('Toyota','Blue', 3), ('Toyota','White', 1);
with rankedSales as ( select car, colour, sold, rank() over (partition by car order by sold desc) rn from carSales) select car, colour, sold from rankedSales where rn = 1;
car
colour
sold
Benz
Black
2
BMW
Black
3
Toyota
Yellow
7