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Home Backend Development PHP Tutorial mysql 数据库根据id 查找其他相邻的数据

mysql 数据库根据id 查找其他相邻的数据

Jun 23, 2016 pm 01:35 PM

比如我有一个article的表(总共有 9 条数据)
有一条数据 id为8
我想查出 id接近8 的其他相邻的4条数据  结果为:9,1,2,3

如果 id 为1 结果为 :2,3,4,5


回复讨论(解决方案)

select *from article where id in (id+1,id+2,id+3,id+4);
试试行不行

通过mysql语句查询比较难,最直接简单的方式可以通过php去处理查询

SELECT ABS(id-8),* FROM article ORDER BY 1
(d-8表示id与8的差,如果id值是8那么差为0,如果id值为9那么差是-1,如果id值是7那么差为1
ABS(id-8)表示id与8的差的绝对值,绝对着就是把负数变为正数,如果id值是8那么差为0,如果id值为9那么差是1,如果id值是7那么差还是为1)
谢谢 ,不过最后找到答案了

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