Question

我在SQL Server 2012中收到以下错误：

无效的对象名称“Libraries”。

有没有办法修改语法，所以我不必使用表变量？问题出现在我放置into语句的代码的末尾。

以下是代码：

SET NOCOUNT ON 
declare @level int = 0

DECLARE @DataLibraryName VARCHAR(500)
SET @DataLibraryName = 'FN_PerfSalesChargeFeeReplacementText'; 

IF LTRIM(RTRIM(@DataLibraryName)) = '' 
     SET @DataLibraryName = null; 

WITH DataLibraryRaw AS 
( 
    SELECT 
       *
       ,CAST(CAST(dataLibraryXML AS NTEXT) AS XML) dataLibraryXMLData 
       ,datasource_name dataLibraryName 
    FROM 
       tblrpt_datascript 
    --WHERE datasource_type = 'DLMERGE' 
), 
DataLibraryDep AS
( 
   SELECT 
      dataLibraryName 
      ,dataLibraryXMLData.query('//SourceSpecification') [SourceSpecification] 
   FROM 
      DataLibraryRaw 
), 
DependenciesXML AS
( 
    SELECT 
       dataLibraryName 
       ,CAST(REPLACE(REPLACE(CAST([SourceSpecification] AS NVARCHAR(MAX)), '#', '<item>#'), '}', '}</item>') AS XML) AS dataLibraryXMLData 
    FROM 
       DataLibraryDep 
), 
DataLibraries AS 
( 
   SELECT 
      dataLibraryName 
      ,d.i.query('.').value('.', 'nvarchar(max)') dependDataLibrary 
   FROM 
      DependenciesXML dx 
   CROSS APPLY 
      dataLibraryXMLData.nodes('//item') AS d(i) 
), 
Libraries AS 
( 
    SELECT 
       dataLibraryName parentDL 
       ,LTRIM(RTRIM(SUBSTRING([dependDataLibrary], CHARINDEX('=', [dependDataLibrary] ,1)+1 ,CHARINDEX('{', [dependDataLibrary], 1)-(CHARINDEX('=', [dependDataLibrary] ,1)+1)))) childDL 
    FROM 
       DataLibraries 
),
RecursiveData AS 
( 
    SELECT 
       *, 0 AS LEVEL 
    FROM 
       Libraries 
    WHERE 
       parentDL = IsNull(@DataLibraryName, parentDL) 
)
SELECT * 
FROM RecursiveData 

---- Recursive member definition

insert RecursiveData 
   SELECT 
       m.parentDL, m.childDL, 
       @level + 1 
   FROM 
       Libraries m 
   INNER JOIN 
       RecursiveData r ON r.childDL = m.parentDL AND r.level = @level

提前谢谢你。

Answer 1

根据您上面的脚本，问题是您正在从CTE中进行选择：

SELECT * FROM RecursiveData

然后做插入：

insert RecursiveData 
SELECT m.parentDL, m.childDL, 
@level + 1 
FROM Libraries m 
INNER JOIN RecursiveData r 
ON r.childDL = m.parentDL and r.level = @level

在使用CTE之后，您无法引用CTE，因此只要SELECT *语句存在，您的插入就会失败。然而，另一个问题是你似乎试图插入你的最后一个CTE，RecursiveData，它也不会像你期望的那样工作。

在插入之前，您的代码的最后一部分应该是：

,RecursiveData AS (
    SELECT ParentDL, ChildDL, 0 AS LEVEL 
    FROM Libraries 
    WHERE parentDL = IsNull(@DataLibraryName, parentDL) 
    UNION ALL
    SELECT l.PARENTDL, l.CHILDDL, r.LEVEL + 1
    FROM Libraries l
    JOIN RecursiveData r ON r.CHILDDL = l.PARENTDL
    )
    SELECT * FROM RecursiveData

并且您想要完全关闭插件（或将其插入您需要的任何表格中）。

使用插入CTE时出错

1 个答案: