178. scores ranking
SQL schema
to write a SQL query to achieve the score rankings. If the two scores are identical, the two scores rank (Rank) the same. Note that in the bisecting a ranking should be the next consecutive integer values. In other words, there should be no "gap" between the ranking.
+----+-------+
| Id | Score |
+----+-------+
| 1 | 3.50 |
| 2 | 3.65 |
| 3 | 4.00 |
| 4 | 3.85 |
| 5 | 4.00 |
| 6 | 3.65 |
+----+-------+
For example, according to the table given Scores, your query should return (by score from highest to lowest):
+-------+------+
| Score | Rank |
+-------+------+
| 4.00 | 1 |
| 4.00 | 1 |
| 3.85 | 2 |
| 3.65 | 3 |
| 3.65 | 3 |
| 3.50 | 4 |
+-------+------+
PS:
b is not repeated query results, and descending sequence of numbers
SELECT b.Score AS Score,b.Rank FROM Scores INNER JOIN
(
SELECT Score,ROW_NUMBER() OVER (ORDER BY Score DESC) AS Rank FROM
(SELECT DISTINCT(Score) AS Score FROM Scores)
a
)b ON b.Score = Scores.Score
ORDER BY b.Rank
