CTE BOM查询Ordering

Question

我正在处理 BOM（对于文档，所以我称之为 BOD）并且我希望最终得到树视图中的数据，因此我需要展开 BOM 并按每个级别进行排序。我不知道如何让排序正常工作

我在 SSMS 中工作

我有一个观点； [ParentDocumentTitle], [ParentDocumentName], [ChildDocumentTitle], [ChildDocumentName], [PDFFilePath], 所有 Nvarchar

然后我有SQL查询

--alter procedure [dbo].[GetBODSummaryLevels]


IF EXISTS(SELECT [name] FROM tempdb.sys.tables WHERE [name] like '#BODSummary%') 
BEGIN
   DROP TABLE #BODSummary;
END;

DECLARE
@ParentDocTitle nvarchar(50),
@level int

SET @ParentDocTitle = 'Test Book';
SET @level = 10;

--as 
begin
WITH RPL (
[Level],
[ParentDocumentTitle], 
[ParentDocumentName],
[ChildDocumentTitle], 
[ChildDocumentName], 
[PDFFilePath]) 

AS
     (  SELECT 
            0,
            ROOT.[ParentDocumentTitle],
            ROOT.[ParentDocumentName], 
            ROOT.[ChildDocumentTitle], 
            ROOT.[ChildDocumentName],
            ROOT.[PDFFilePath]
        FROM [WorkInstruictionManagerDB].[dbo].[BOD] ROOT
        WHERE ROOT.[ParentDocumentTitle] = @ParentDocTitle
      UNION ALL
        SELECT 
            Parent.Level+1,
            CHILD.[ParentDocumentTitle], 
            CHILD.[ParentDocumentName], 
            CHILD.[ChildDocumentTitle], 
            CHILD.[ChildDocumentName], 
            CHILD.[PDFFilePath]
        FROM RPL PARENT, [WorkInstruictionManagerDB].[dbo].[BOD] CHILD
        WHERE  PARENT.[ChildDocumentTitle] = CHILD.[ParentDocumentTitle]and PARENT.Level<@level
     )

SELECT 
[Level] as bodlevel,
[ParentDocumentTitle] as pt, 
[ParentDocumentName] as pn, 
[ChildDocumentTitle] as ct,
[ChildDocumentName] as cn,
[PDFFilePath] as pdf

into #BODSummary
FROM RPL
Select * From #BODSummary 
end

这提供了正确的信息，但我不知道如何对这些信息进行排序，以便子级显示在父级下方。

我错过了什么或者只是做错了什么？

Answer 1

您可以在所有子行中使用根父 ID。然后按根 ID 和级别对行进行排序。

请试试这个：

--alter procedure [dbo].[GetBODSummaryLevels]


IF EXISTS(SELECT [name] FROM tempdb.sys.tables WHERE [name] like '#BODSummary%') 
BEGIN
   DROP TABLE #BODSummary;
END;

DECLARE
@ParentDocTitle nvarchar(50),
@level int

SET @ParentDocTitle = 'Test Book';
SET @level = 10;

--as 
begin
WITH RPL (
[RootID],
[Level],
[ParentDocumentTitle], 
[ParentDocumentName],
[ChildDocumentTitle], 
[ChildDocumentName], 
[PDFFilePath]) 

AS
     (  SELECT 
            ROOT.[ChildDocumentTitle]  RootID
            0 Level,
            ROOT.[ParentDocumentTitle],
            ROOT.[ParentDocumentName], 
            ROOT.[ChildDocumentTitle], 
            ROOT.[ChildDocumentName],
            ROOT.[PDFFilePath]
        FROM [WorkInstruictionManagerDB].[dbo].[BOD] ROOT
        WHERE ROOT.[ParentDocumentTitle] = @ParentDocTitle
      UNION ALL
        SELECT 
            CHILD.[ParentDocumentTitle] RootID
            Parent.Level+1,
            CHILD.[ParentDocumentTitle], 
            CHILD.[ParentDocumentName], 
            CHILD.[ChildDocumentTitle], 
            CHILD.[ChildDocumentName], 
            CHILD.[PDFFilePath]
        FROM RPL PARENT, [WorkInstruictionManagerDB].[dbo].[BOD] CHILD
        WHERE  PARENT.[ChildDocumentTitle] = CHILD.[ParentDocumentTitle]and PARENT.Level<@level
     )

SELECT 
[Level] as bodlevel,
[ParentDocumentTitle] as pt, 
[ParentDocumentName] as pn, 
[ChildDocumentTitle] as ct,
[ChildDocumentName] as cn,
[PDFFilePath] as pdf

into #BODSummary
FROM RPL
Select * From #BODSummary
order by RootID,Level
end

Answer 2

构建层次结构路径并按其排序。种类

WITH RPL (
[Level],
[ParentDocumentTitle], 
[ParentDocumentName],
[ChildDocumentTitle], 
[ChildDocumentName], 
[PDFFilePath],
hierarchypath ) 

AS
     (  SELECT 
            0,
            ROOT.[ParentDocumentTitle],
            ROOT.[ParentDocumentName], 
            ROOT.[ChildDocumentTitle], 
            ROOT.[ChildDocumentName],
            ROOT.[PDFFilePath],
            convert(varchar(max), ROOT.[ChildDocumentTitle]) 
        FROM [WorkInstruictionManagerDB].[dbo].[BOD] ROOT
        WHERE ROOT.[ParentDocumentTitle] = @ParentDocTitle
      UNION ALL
        SELECT 
            Parent.Level+1,
            CHILD.[ParentDocumentTitle], 
            CHILD.[ParentDocumentName], 
            CHILD.[ChildDocumentTitle], 
            CHILD.[ChildDocumentName], 
            CHILD.[PDFFilePath],
            hierarchypath  + '->' + CHILD.[ParentDocumentTitle]
        FROM RPL PARENT
        JOIN [WorkInstruictionManagerDB].[dbo].[BOD] CHILD
          ON  PARENT.[ChildDocumentTitle] = CHILD.[ParentDocumentTitle] and PARENT.Level<@level
     )

SELECT 
[Level] as bodlevel,
[ParentDocumentTitle] as pt, 
[ParentDocumentName] as pn, 
[ChildDocumentTitle] as ct,
[ChildDocumentName] as cn,
[PDFFilePath] as pdf,
hierarchypath
into #BODSummary
FROM RPL;

Select * 
From #BODSummary 
order by hierarchypath desc -- children first

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