我想编写一个 MySQL 查询来对分数进行排名。如果两个分数之间存在平局,则两者的排名应相同。同样在平局之后,下一个排名数字应该是下一个连续的整数值。换句话说,等级之间不应该有“漏洞”。
+----+-------+
| Id | Score |
+----+-------+
| 1 | 3.50 |
| 2 | 3.65 |
| 3 | 4.00 |
| 4 | 3.85 |
| 5 | 4.00 |
| 6 | 3.65 |
+----+-------+
给定上述分数表,查询应生成以下报告(按最高分排序)
+-------+------+
| Score | Rank |
+-------+------+
| 4.00 | 1 |
| 4.00 | 1 |
| 3.85 | 2 |
| 3.65 | 3 |
| 3.65 | 3 |
| 3.50 | 4 |
+-------+------+
我尝试了类似下面的设置@pk1 =''; 设置@rn1 =1;设置@val = 1;
SELECT score,Rank
FROM
(
SELECT score,
@rn1 := if(@pk1=score,@rn1, @rn1+@val) as Rank,
@val := if(@pk1=score,@val+1, 1 ) as value,
@pk1 := score
FROM
(SELECT score FROM scores ORDER BY score) as rank) as scores;
但上述没有用任何人都可以帮助解决这个问题