sql - 如何在 SQL Server 中有效获取上一行和下一行的值

Question

假设我有这些行，

仪器ID

547
698
708

InstrumentID 不是自动生成的列。

假设我在过程中传递参数为 698，我应该得到前一个值为 547 的值，下一个值为 708 的值。如何在 SQL 中有效地执行此操作？

我有这个程序，但效率不高(而且不正确)。

Alter PROCEDURE GetNextAndPreviousInsturmentID
(
    @InstrumentID   varchar(14),
    @PreviousInstrumentID   varchar(14) OUT,
    @NextInstrumentID   varchar(14) OUT
)
AS
BEGIN
    Declare @RowNum int = 0

    Select @RowNum = ROW_NUMBER() Over (Order by Cast(@InstrumentID as decimal(18))) From Documents Where InstrumentID = @InstrumentID 

    ;With normal As
    (   
        Select ROW_NUMBER() Over (Order by Cast(@InstrumentID as decimal(18))) as RowNum, Cast(InstrumentID as decimal(18)) as InstrumentID
            From Documents 
    )
    Select @PreviousInstrumentID = InstrumentID From normal
        Where RowNum = @RowNum - 1
    Select @NextInstrumentID = InstrumentID From normal
        Where RowNum = @RowNum + 1

END
GO

Answer 1

这是一个更简单的解决方案，但仍然更有效

SELECT P.PreviousID, N.NextID
FROM
(SELECT  MAX(D.InstrumentID) PreviousID
FROM Documents D
WHERE InstrumentID < @InstrumentID) P
CROSS JOIN
(SELECT  MIN(D.InstrumentID) NextID
FROM Documents D
WHERE InstrumentID > @InstrumentID) N