Question

I have data that looks like this:

Table
Group: "A" , Color: "Blue", Count: "400"
Group: "A" , Color: "Green", Count: "3"
Group: "A" , Color: "Yellow", Count: "6"
Group: "A" , Color: "Red", Count: "1"
Group: "B" , Color: "Purple", Count: "243"
Group: "B" , Color: "Green", Count: "2"
Group: "B" , Color: "Yellow", Count: "7"

How can I query this data to get for each group the most popular (by count) color. So the result would look like this:

Result
Group: "A", Color: "Blue"
Group: "B", Color: "Purple"

Answer 1

SELECT Group, Color
FROM MyTable t
INNER JOIN (SELECT Group, Max(CAST(Count as int)) as Ct
            FROM MyTable
            GROUP BY Group) Sub
   ON sub.group = t.group
   AND sub.ct = t.count

As an aside, don’t name a field GROUP, or COUNT. They are keywords and will lead to headaches and heartbreak.