问题：
用sql语言查询连续三天人流量超过100的体育馆的信息
思路：
sql语言不是很熟练，这里的方法也很暴力，就是将大于100人流量的体育馆记录全部做连接，然后筛选出id相邻3个的。。
代码：
1 # Write your MySQL query statement below 2 3 select s1.* 4 from stadium as s1, stadium as s2, stadium as s3 5 where s1.people >= 100 and s2.people >= 100 and s3.people >= 100 6 and ( 7 (s1.id + 1 = s2.id and s1.id + 2 = s3.id) 8 or 9 (s1.id - 1 = s2.id and s1.id + 1 = s3.id) 10 or 11 (s1.id - 2 = s2.id and s1.id - 1 = s3.id) 12 ) 13 group by s1.id;
原文：https://www.cnblogs.com/leo-lzj/p/10327936.html