組一組鏈價值的

我在SQL Server下表中UnitConvertOne 2008組一組鏈價值的

DECLARE @UnitConvert table 
(
    ID int identity(1,1), 
    ConvertUnitOne nvarchar(50), 
    ConvertUnitTwo nvarchar(50) 
) 


INSERT INTO @UnitConvert 
SELECT 100,500 
UNION ALL SELECT 200,100 
UNION ALL SELECT 500,300 
UNION ALL SELECT 2000,1000 
UNION ALL SELECT 3000,9000 
UNION ALL SELECT 2000,700 
UNION ALL SELECT 820,3000 

SELECT * FROM @UnitConvert

這裏值相當於UnitConvertTwo 所以它擁有的價值鏈接

所以我想鏈顯示像

Group   unit 

1    100 

       200 

       300 

       500 

2    700 

       1000 

       2000 

3    820 

       3000 

       9000

組值將基於組的數量被自動增量的結果可以被創建單位價值可以是從小排序，以較大的值

來源

2013-03-11 SQL006

我無法理解。 UnitConvertOne如何等於UnitConvertTwo？輸出的邏輯是什麼？ – 2013-03-11 06:45:06

我們在這裏插入一些相當於我們插入的某個單位的尺寸單位 100 = 500,200 = 100,500 = 300..so 100,200,300,500組成一組 – SQL006 2013-03-11 08:29:47

編輯了預期的輸出 – SQL006 2013-03-11 09:55:21

感謝尤金Elutin從sqlservercentral.com

DECLARE @UnitConvert table 
(
    ID int identity(1,1), 
    ConvertUnitOne nvarchar(50), 
    ConvertUnitTwo nvarchar(50) 
) 

INSERT INTO @UnitConvert 
SELECT 100,500 
UNION ALL SELECT 200,100 
UNION ALL SELECT 500,300 
UNION ALL SELECT 2000,1000 
UNION ALL SELECT 3000,9000 
UNION ALL SELECT 2000,700 
UNION ALL SELECT 820,3000 

;WITH cteUP AS 
(
SELECT ConvertUnitTwo AS childUP, ConvertUnitOne AS unitUP, 0 AS Lvl 
FROM @UnitConvert 
UNION ALL 
SELECT cte.childUP, u.ConvertUnitOne AS unitUP, Lvl = Lvl + 1 
FROM @UnitConvert u 
INNER JOIN cteUP cte ON cte.unitUP = u.ConvertUnitTwo 
) 
--select * from cteUP 
SELECT c.ConvertUnit 
     ,DENSE_RANK() OVER (ORDER BY ISNULL(cm.unitUP, c.ConvertUnit)) AS GrpNO 
FROM (SELECT ConvertUnitOne AS ConvertUnit FROM @UnitConvert 
     UNION 
     SELECT ConvertUnitTwo AS ConvertUnit FROM @UnitConvert) c 
OUTER APPLY (SELECT TOP 1 unitUP FROM cteUP m WHERE 
      m.childUP = c.ConvertUnit ORDER BY Lvl DESC) cm

來源

2013-03-11 13:01:36 SQL006

組一組鏈價值的

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