Sql 基于上一个查询，在一个查询中进行多个选择 请考虑以下

MS SQL Server 2008架构设置：

问题1：

:

问题: -如何在同一查询中基于GroupProductRelationSorting选择下一行

我想输出的结果应该是：

| GROUPPRODUCTRELATIONPRODUCTID | GROUPPRODUCTRELATIONSORTING |
|-------------------------------|-----------------------------|
|                       OneProd |                           4 |

我知道我可以做这样的事情：

 WITH Temp AS
 (
      SELECT 
           GroupProductRelationSorting
      FROM 
           EcomGroupProductRelation
      WHERE
           GroupProductRelationProductID = 'Another' /* returns 3*/
 )

 SELECT 
      * 
 FROM 
      EcomGroupProductRelation
 WHERE 
      GroupProductRelationSorting=Temp+1

但我似乎不知道该怎么做？

试试这个

WITH cte AS (
   SELECT
      GroupProductRelationSorting,
      GroupProductRelationProductID,
      ROW_NUMBER() OVER (ORDER BY GroupProductRelationSorting) rw
   FROM EcomGroupProductRelation
)

SELECT
  c2.*
FROM cte c1
JOIN cte c2 ON c1.rw = c2.rw-1
WHERE c1.GroupProductRelationProductID = 'Another'

---

小提琴手：

你几乎写下了答案。 你只需要修改一下你的代码

由此：

  SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=Temp+1

对此

 SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=(SELECT GroupProductRelationSorting FROM Temp)+ 1

您给出了表，但需要给出标量值

或者，您可以先将select值放入变量，然后对其进行过滤：

DECLARE @Temp INT = 0

SELECT @Temp = GroupProductRelationSorting
FROM EcomGroupProductRelation
WHERE GroupProductRelationProductID = 'Another' /* returns 3*/

 SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=@Temp+1

或

---

伟大的第一个答案有效。我不能让第二个去工作。。但是谢谢：如果我把所有的衣服都脱光，这就行了。他们为什么在那里Thanksi刚刚使用了table变量@table来避免在我的数据库中创建对象或临时表..好的，这很有意义：谢谢

  SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=Temp+1

 SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=(SELECT GroupProductRelationSorting FROM Temp)+ 1

DECLARE @Temp INT = 0

SELECT @Temp = GroupProductRelationSorting
FROM EcomGroupProductRelation
WHERE GroupProductRelationProductID = 'Another' /* returns 3*/

 SELECT * FROM EcomGroupProductRelation WHERE GroupProductRelationSorting=@Temp+1

Declare @EcomGroupProductRelation TABLE 
(
    GroupProductRelationProductID varchar(255), 
    GroupProductRelationSorting int
);

INSERT INTO @EcomGroupProductRelation
(   GroupProductRelationProductID, 
    GroupProductRelationSorting
)
VALUES
    ('OneProd', 4),
    ('Another', 3),
    ('OneMore', 2),
    ('LastProd', 1);

 SELECT TOP 1 *
FROM   (SELECT TOP 2 *
        FROM   @EcomGroupProductRelation
        WHERE  GroupProductRelationSorting >= 3
        ORDER  BY GroupProductRelationSorting) T
ORDER  BY GroupProductRelationProductID DESC  

 ;WITH Temp AS
 (
      SELECT GroupProductRelationProductID,
           ROW_NUMBER()OVER(ORDER BY GroupProductRelationSorting )AS Rn
      FROM 
           @EcomGroupProductRelation

 )
 SELECT P.GroupProductRelationProductID 
 FROM Temp P
 LEFT JOIN Temp T ON P.RN = T.Rn + 1
 WHERE T.GroupProductRelationProductID = 'Another'