LeetCode--178.分数排名

编写一个 SQL查询来实现分数排名。如果两个分数相同，则两个分数排名（Rank）相同。请注意，评分后的下一个名次应该是下一个连续的整数值。换句话说，名次之间不应该有“间隔”。

建表

Create table  scores (Id int, Score DECIMAL(3,2));
insert into scores (Id, Score) values ('1','3.5');
insert into scores (Id, Score) values ('2','3.65');
insert into scores (Id, Score) values ('3','4.0');
insert into scores (Id, Score) values ('4','3.85');
insert into scores (Id, Score) values ('5','4.0');
insert into scores (Id, Score) values ('6','3.65');

用开窗函数排序即可

select Id, Score, dense_rank() over(ORDER BY Score desc) ranks from scores