#创建成绩表 CREATE TABLE `tscore` ( `id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'id唯一标识 /注:自增', `score` float(11) DEFAULT NULL COMMENT '分数', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='成绩表'; insert into tscore (id,score) value (1,3.5); insert into tscore (id,score) value (2,3.65); insert into tscore (id,score) value (3,4.00); insert into tscore (id,score) value (4,3.85); insert into tscore (id,score) value (5,4.00); insert into tscore (id,score) value (6,3.65); #查询,实现分数排名,去重显示。 #查询去重后分数的条件:当前行分数大于等于同表的分数 的count数量, 去重显示, 然后降序输出 select Score, (select count(distinct Score) from tscore where Score>=t.Score) as Rank from tscore as t order by Score desc;
查询,实现分数排名,去重显示。
猜你喜欢
转载自blog.csdn.net/tangerine_/article/details/86063978
今日推荐
周排行