标签:font 方法 style 查询 sql col 代码 weight from
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;
标签:font 方法 style 查询 sql col 代码 weight from
原文地址:https://www.cnblogs.com/leo-lzj/p/10327936.html