CTE代碼只是抓住錨不遞歸遞歸

查詢不進行遞歸，它只是獲取錨部分（父母id爲空的ids）。CTE代碼只是抓住錨不遞歸遞歸

任何人都可以幫我發現我的錯誤嗎？我已經嘗試了很多東西，但我總是檢索相同數量的行，沒有父ID的IDS。

WITH EmpTree 
AS (
    SELECT e.DWH_Dim_TFS_File_DWH_FileParent_Guid 
     ,e.DWH_Dim_TFS_File_DWH_File_Guid 
     ,1 AS Depth 
     ,File_Name_String = CAST(CAST(e.File_Name AS BINARY (100)) AS VARBINARY(8000)) 
    FROM [dbo].[Hierarchy_Luis] AS e 
    WHERE e.DWH_Dim_TFS_File_DWH_FileParent_Guid IS NULL 

    UNION ALL 

    SELECT e.DWH_Dim_TFS_File_DWH_FileParent_Guid 
     ,e.DWH_Dim_TFS_File_DWH_File_Guid 
     ,p.Depth + 1 AS Depth 
     ,File_Name_String = CAST(CONCAT (
       p.File_Name_String 
       ,CAST(e.File_Name AS BINARY (100)) 
       ) AS VARBINARY(8000)) 
    FROM [dbo].[Hierarchy_Luis] AS e 
    JOIN EmpTree AS p ON e.DWH_Dim_TFS_File_DWH_FileParent_Guid = p.DWH_Dim_TFS_File_DWH_File_Guid 
    ) 
SELECT p.DWH_Dim_TFS_File_DWH_File_Guid 
    ,p.Depth 
    ,Level01 = CAST(SUBSTRING(p.File_Name_String, 1, 100) AS NVARCHAR(100)) 
    ,Level02 = CAST(SUBSTRING(p.File_Name_String, 101, 100) AS NVARCHAR(100)) 
    ,Level03 = CAST(SUBSTRING(p.File_Name_String, 201, 100) AS NVARCHAR(100)) 
    ,Level04 = CAST(SUBSTRING(p.File_Name_String, 301, 100) AS NVARCHAR(100)) 
    ,Level05 = CAST(SUBSTRING(p.File_Name_String, 401, 100) AS NVARCHAR(100)) 
    ,Level07 = CAST(SUBSTRING(p.File_Name_String, 501, 100) AS NVARCHAR(100)) 
    ,Level08 = CAST(SUBSTRING(p.File_Name_String, 601, 100) AS NVARCHAR(100)) 
    ,Level09 = CAST(SUBSTRING(p.File_Name_String, 701, 100) AS NVARCHAR(100)) 
    ,Level10 = CAST(SUBSTRING(p.File_Name_String, 801, 100) AS NVARCHAR(100)) 
    ,Level11 = CAST(SUBSTRING(p.File_Name_String, 901, 100) AS NVARCHAR(100)) 
    ,Level12 = CAST(SUBSTRING(p.File_Name_String, 1001, 100) AS NVARCHAR(100)) 
    ,Level13 = CAST(SUBSTRING(p.File_Name_String, 1101, 100) AS NVARCHAR(100)) 
    ,Level14 = CAST(SUBSTRING(p.File_Name_String, 1201, 100) AS NVARCHAR(100)) 
    ,Level15 = CAST(SUBSTRING(p.File_Name_String, 1301, 100) AS NVARCHAR(100)) 
    ,Level16 = CAST(SUBSTRING(p.File_Name_String, 1401, 100) AS NVARCHAR(100)) 
    ,Level17 = CAST(SUBSTRING(p.File_Name_String, 1501, 100) AS NVARCHAR(100)) 
    ,Level18 = CAST(SUBSTRING(p.File_Name_String, 1601, 100) AS NVARCHAR(100)) 
    ,Level19 = CAST(SUBSTRING(p.File_Name_String, 1701, 100) AS NVARCHAR(100)) 
    ,Level20 = CAST(SUBSTRING(p.File_Name_String, 1801, 100) AS NVARCHAR(100)) 
    ,Level21 = CAST(SUBSTRING(p.File_Name_String, 1901, 100) AS NVARCHAR(100)) 
    ,Level22 = CAST(SUBSTRING(p.File_Name_String, 2001, 100) AS NVARCHAR(100)) 
    ,Level23 = CAST(SUBSTRING(p.File_Name_String, 2101, 100) AS NVARCHAR(100)) 
    ,Level24 = CAST(SUBSTRING(p.File_Name_String, 2201, 100) AS NVARCHAR(100)) 
    ,Level25 = CAST(SUBSTRING(p.File_Name_String, 2301, 100) AS NVARCHAR(100)) 
    ,Level26 = CAST(SUBSTRING(p.File_Name_String, 2401, 100) AS NVARCHAR(100)) 
    ,Level27 = CAST(SUBSTRING(p.File_Name_String, 2501, 100) AS NVARCHAR(100)) 
FROM EmpTree p

You can see in the link the two columns data types where the recursion is being made, it is a nvarchar(256)

非常感謝，我知道它必須是東西很基本的，但我無法找到答案。

樣本數據

DWH_Dim_TFS_File_DWH_FileParent_GUID DWH_Dim_TFS_File_DWH_File_GUID File_Name 
114087616 114087617 ot_de 
114087616 114087618 ot_de 
114087593 114087619 _proj 
11407441 11408762 I_EXP 
114087593 114087620 arm\ 
114087620 114087621 e\ 
114087621 114087622 ot_de 
114087621 114087623 ot_de 
114087593 114087624 c\ 
114087624 114087625 ot_de 
114087624 114087626 ot_de 
114087593 114087627 3s896 
114087593 114087628 kefil 
114087593 114087629 adme. 
11408762 11408763 B_PTS 
114087593 114087630 mdk\ 
114087630 114087631 ot_de 
114087630 114087632 ot_de 
114087593 114087633 urcer 
114087633 114087634 ot_de 
114087633 114087635 ot_de 
114087593 114087636 artup 
114087593 114087637 artup 
114087593 114087638 artup 
114087593 114087639 artup 
11408763 11408764 B_PTS 
114087593 114087640 artup 
114087302 114087641 ot_et 
114087641 114087642 _conf 
114087641 114087643 ot_et 
114087641 114087644 ot_et 
114087641 114087645 ot_et 
114087641 114087646 ot_et 
114087641 114087647 ot_et 
114087641 114087648 s\ 
114087648 114087649 csimp 
11408763 11408765 B_PTS 
114087648 114087650 cspro 
114087648 114087651 dtbui 
114087648 114087652 dtpro 
114087648 114087653 rojec 
114087648 114087654 ettin 
114087654 114087655 g.ecl 
114087648 114087656 cros. 
114087648 114087657 rget_ 
114087641 114087658 dered 
114087658 114087659 ot_et 
11408763 11408766 cessW

來源

2017-09-14 Luis Do Canto Brum

你可以分享一些測試數據作爲DML – TheGameiswar

看看這個鏈接（https://spaghettidba.com/2015/04/24/how-to-post-at-sql-question-on-a-公共論壇/）瞭解更多關於如何改善任務 – TheGameiswar

Ups，抱歉的傢伙，因爲我的問題僅僅是選擇和連接不工作，我認爲沒有數據是必要的。這個問題的核心就在file_guid和fileparent_guid上。我將給出關於數據類型的信息 –

這是一個基於評論答案前面：

的解決方案是，他沒有，他們都爲空的任何比賽 - 他必須在第一與它們匹配選擇。

WITH EmpTree 
AS (
SELECT e.DWH_Dim_TFS_File_DWH_FileParent_Guid 
    ,e.DWH_Dim_TFS_File_DWH_File_Guid 
    ,1 AS Depth 
    ,File_Name_String = CAST(CAST(e.File_Name AS BINARY (100)) AS VARBINARY(8000)) 

FROM [dbo].[Hierarchy_Luis] AS e WHERE e.DWH_Dim_TFS_File_DWH_FileParent_Guid = e.DWH_Dim_TFS_File_DWH_File_Guid 

UNION ALL 

SELECT e.DWH_Dim_TFS_File_DWH_FileParent_Guid 
    ,e.DWH_Dim_TFS_File_DWH_File_Guid 
    ,p.Depth + 1 AS Depth 
    ,File_Name_String = CAST(CONCAT (
      p.File_Name_String 
      ,CAST(e.File_Name AS BINARY (100)) 
      ) AS VARBINARY(8000)) 
FROM [dbo].[Hierarchy_Luis] AS e 
JOIN EmpTree AS p ON e.DWH_Dim_TFS_File_DWH_FileParent_Guid = p.DWH_Dim_TFS_File_DWH_File_Guid 
) 
SELECT p.DWH_Dim_TFS_File_DWH_File_Guid 
,p.Depth 
,Level01 = CAST(SUBSTRING(p.File_Name_String, 1, 100) AS NVARCHAR(100)) 
,Level02 = CAST(SUBSTRING(p.File_Name_String, 101, 100) AS NVARCHAR(100)) 
,Level03 = CAST(SUBSTRING(p.File_Name_String, 201, 100) AS NVARCHAR(100)) 
,Level04 = CAST(SUBSTRING(p.File_Name_String, 301, 100) AS NVARCHAR(100)) 
,Level05 = CAST(SUBSTRING(p.File_Name_String, 401, 100) AS NVARCHAR(100)) 
,Level07 = CAST(SUBSTRING(p.File_Name_String, 501, 100) AS NVARCHAR(100)) 
,Level08 = CAST(SUBSTRING(p.File_Name_String, 601, 100) AS NVARCHAR(100)) 
,Level09 = CAST(SUBSTRING(p.File_Name_String, 701, 100) AS NVARCHAR(100)) 
,Level10 = CAST(SUBSTRING(p.File_Name_String, 801, 100) AS NVARCHAR(100)) 
,Level11 = CAST(SUBSTRING(p.File_Name_String, 901, 100) AS NVARCHAR(100)) 
,Level12 = CAST(SUBSTRING(p.File_Name_String, 1001, 100) AS NVARCHAR(100)) 
,Level13 = CAST(SUBSTRING(p.File_Name_String, 1101, 100) AS NVARCHAR(100)) 
,Level14 = CAST(SUBSTRING(p.File_Name_String, 1201, 100) AS NVARCHAR(100)) 
,Level15 = CAST(SUBSTRING(p.File_Name_String, 1301, 100) AS NVARCHAR(100)) 
,Level16 = CAST(SUBSTRING(p.File_Name_String, 1401, 100) AS NVARCHAR(100)) 
,Level17 = CAST(SUBSTRING(p.File_Name_String, 1501, 100) AS NVARCHAR(100)) 
,Level18 = CAST(SUBSTRING(p.File_Name_String, 1601, 100) AS NVARCHAR(100)) 
,Level19 = CAST(SUBSTRING(p.File_Name_String, 1701, 100) AS NVARCHAR(100)) 
,Level20 = CAST(SUBSTRING(p.File_Name_String, 1801, 100) AS NVARCHAR(100)) 
,Level21 = CAST(SUBSTRING(p.File_Name_String, 1901, 100) AS NVARCHAR(100)) 
,Level22 = CAST(SUBSTRING(p.File_Name_String, 2001, 100) AS NVARCHAR(100)) 
,Level23 = CAST(SUBSTRING(p.File_Name_String, 2101, 100) AS NVARCHAR(100)) 
,Level24 = CAST(SUBSTRING(p.File_Name_String, 2201, 100) AS NVARCHAR(100)) 
,Level25 = CAST(SUBSTRING(p.File_Name_String, 2301, 100) AS NVARCHAR(100)) 
,Level26 = CAST(SUBSTRING(p.File_Name_String, 2401, 100) AS NVARCHAR(100)) 
,Level27 = CAST(SUBSTRING(p.File_Name_String, 2501, 100) AS NVARCHAR(100)) 
FROM EmpTree p

來源

2017-09-14 10:21:33 plaidDK

CTE代碼只是抓住錨不遞歸遞歸

回答

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