递归出java实体类中所有带@Schema注解且有复杂类型属性List＜T＞泛型类型

18 - 各赛事的用户注册率

-- 注册率=注册用户数/所有用户数
select
    r.contest_id,round(100*count(*)/(select count(*) from Users),2) percentage 
from 
    Register r
group by 
    r.contest_id
order by
     percentage desc,r.contest_id ASC;