Flag / Mark Highest ranking record

Question

I have a query that in the end looks like this:

DECLARE @Rank TABLE
(
     Team VARCHAR(3),
     StatCount TINYINT,
     TeamRank TINYINT
)
INSERT INTO @Rank VALUES ('AAA', 10, 5)
INSERT INTO @Rank VALUES ('AAA', 7, 4)
INSERT INTO @Rank VALUES ('AAA', 6, 3)
INSERT INTO @Rank VALUES ('AAA', 4, 2)
INSERT INTO @Rank VALUES ('AAA', 2, 1)

SELECT * From @Rank ORDER BY TeamRank DESC

Now my requirement is to mark the highest rank so that the front end can highlight that record. I am open to other ideas but tried this out of the gate and it's not quite behaving as expected. So if you could point out what I am doing wrong or as mentioned another way I would be grateful.

SELECT 
    Team,
    StatCount,
    TeamRank,
    (
        CASE 
            WHEN MAX(StatCount) = StatCount
                THEN 'True'
            ELSE
                'False'
            END
    ) AS 'HighScore'
FROM Rank
ORDER BY Team DESC;

Thank You

MY Mistake!

DDL had 'AAA' for every entry but they are different. Should be 'AAA','BBB','CCC' etc.

Thank You everyone for your answers. I apologize again for the bad DDL data.

Answer 1

Try

SELECT 
    Team,
    StatCount,
    TeamRank,
    (
        CASE 
            WHEN StatCount = (select max(StatCount) from @Rank)
                THEN 'True'
            ELSE
                'False'
            END
    ) AS 'HighScore'
FROM @Rank
ORDER BY Team DESC

Answer 2

Here's one way using Max with Partition By (assuming you're using SQL 2005 or greater):

SELECT 
    Team,
    StatCount,
    TeamRank,
    CASE 
        WHEN MAX(StatCount) OVER (PARTITION BY Team) = StatCount
            THEN 'True'
        ELSE
            'False'
    END
    AS 'HighScore'
FROM @Rank
ORDER BY Team DESC;

• SQL Fiddle Demo

Answer 3

what about:

SELECT 
    r.*, isnull(v.b, 0) HighScore
From 
    @Rank r
    left join (select max(StatCount) m, 1 b from @Rank) v on r.StatCount = v.m
ORDER BY TeamRank DESC