178. Rank Scores

Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking number should be the next consecutive integer value. In other words, there should be no "holes" between ranks.

+----+-------+
| Id | Score |
+----+-------+
| 1  | 3.50  |
| 2  | 3.65  |
| 3  | 4.00  |
| 4  | 3.85  |
| 5  | 4.00  |
| 6  | 3.65  |
+----+-------+

For example, given the above Scores table, your query should generate the following report (order by highest score):

+-------+------+
| Score | Rank |
+-------+------+
| 4.00  | 1    |
| 4.00  | 1    |
| 3.85  | 2    |
| 3.65  | 3    |
| 3.65  | 3    |
| 3.50  | 4    |
+-------+------+

# Write your MySQL query statement below
SELECT Score,(
    SELECT COUNT(*)
    FROM ((SELECT DISTINCT Score AS S
            FROM Scores 
            ) AS tmp)
    WHERE Score <= S ) AS RANK
    
FROM Scores
ORDER BY Score DESC;

# Write your MySQL query statement below
SELECT Score,(
    SELECT COUNT(DISTINCT Score) FROM Scores AS S1
    WHERE S1.Score >= S2.Score) AS RANK
    
FROM Scores AS S2
ORDER BY Score DESC;

select Score, rank
from Scores a
left join
    (select dscore, @rank := @rank + 1 as rank
    from 
        (select distinct Score as dscore
        from Scores
        order by dscore desc) s,
        (select @rank := 0) r
     ) as b
on a.Score = b.dscore
order by Score desc