依序在SQL Server中使用库存

Question

下面是我的订单表。起始编号：300，最后编号：900（由客户根据订单提供）

  declare @Order table
    (
       Id int,
       [From] int,
       [To] int
    )

    Insert Into @Order
    Values 


       (1,100,400),
        (2,401,600),
        (3,601,1000),
        (4,1001,2000),
    Declare @first int=300, @last int=900

必需的输出：

请提供解决方案。我必须根据开始和结束编号计算开始和结束列

Answer 1

  

编辑-重新考虑

示例

Declare @Order table(  Id int,[From] int,[To] int )
Insert Into @Order Values 
(1,100,400),
(2,401,600),
(3,601,1000),
(4,1001,2000)

Declare @first int=300, @last int=900

Select A.*
      ,[Start] = case when [From]>@First then [From] else @First end
      ,[End]   = case when @Last <[To] then @Last else [To] end
 From  @Order A
 Where [To] between @First and @Last
    or @Last between [From] and [To] 

返回

Id  From    To      Start   End
1   100     400     300     400
2   401     600     401     600
3   601     1000    601     900