sql - 基于当前的下一个/上一个记录

Question

我有一个未按任何列排序的表。如果我只知道当前的 ID，有什么方法可以选择下一个/上一个记录？ (我用的是mssql)

Id     Label     Date
---------------------
1      label1    2011-01-10
7      label2    2011-01-15 -- how to get previous?
5      label3    2011-01-12 -- I know id of this record
10     label10   2011-01-25 -- how to get next?
12     label8    2011-01-13
2      label5    2011-01-29

提前致谢!

Answer 1

试试这个:

VALUES (1, 'label1', '2011-01-10'), (7, 'label2', '2011-01-15'),
       (5, 'label3', '2011-01-12'), (10, 'label10', '2011-01-25'),             
       (12, 'label8', '2011-01-13'), (2, 'label5', '2011-01-29')

select * from table007; 

Declare @inptID int=12;

;WITH CTE 
as
(
   select *, ROW_NUMBER() over (order by (select 0)) as rn 
   from table007
 )

select * 
from CTE 
where rn in( select rn-1 from CTE where id = @inptID)
union all
select * from CTE where rn in(select rn + 1 from CTE where id = @inptID);

SQL fiddle 演示

DEMO