在mysql數據庫中 rank的用法
在mysql數據庫中 rank的用法的用法你知道嗎？下面小編就跟你們詳細介紹下在mysql數據庫中 rank的用法的用法，希望對你們有用。
在mysql數據庫中 rank的用法的用法如下：
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.
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+----+-------+
| 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):
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+-------+------+
| Score | Rank |
+-------+------+
| 4.00 | 1 |
| 4.00 | 1 |
| 3.85 | 2 |
| 3.65 | 3 |
| 3.65 | 3 |
| 3.50 | 4 |
+-------+------+
題目解答：
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# Write your MySQL query statement below
SELECT e, COUNT(e) AS RANK
FROM Scores
, (
SELECT DISTINCT Score
FROM Scores
) Ranking
WHERE e <= e
GROUP BY , e
ORDER BY e DESC;
