题目链接：
解析：
这道题没有什么技术含量，只需要直接使用WHERE做限定即可。
题解：
# Write your MySQL query statement below
SELECT DISTINCT s1.* FROM stadium s1, stadium s2, stadium s3
WHERE s1.people >= 100 AND s2.people >= 100 AND s3.people >= 100
AND (
(s1.id+1=s2.id AND s1.id+2=s3.id AND s2.id+1=s3.id) ## s1 s2 s3
OR (s2.id+1=s1.id AND s2.id+2=s3.id AND s1.id+1=s3.id) ## s2 s1 s3
OR (s2.id+1=s3.id AND s2.id+2=s1.id AND s3.id+1=s1.id) ## s2 s3 s1
)
ORDER BY s1.id;
