我正在尝试用点数据库构建片段
points
id | xcoord
1 | 2
2 | 5
3 | 9
4 | 12
我的想法是加入一个被一个偏移的xcoords,这会给我..
first_x next_x
2 | 5
5 | 9
9 | 12
但我无法弄明白
select first_x, next_x from (
(select xcoords as first_x from points order by xcoords)
join( select xcoords as next_x from points limit 100 offset 1 )
on ???