为什么选择查询不起作用?

时间:2013-10-28 19:46:31

标签: sql sql-server xml

我尝试从“StkPart”属性中选择每个PartNum,WarehouseCode和OnhandQty,然后从“Plant”属性中选择工厂。此xml文件中只有一个“Plant”,“Plant”将与“StkPart”属性中的每一行相关联。
例如:

   PartNum   WarehouseCode   OnhandQty  Plant
1. 10-12345     Corona         150      MfgSys
2. 10-12351     Cork             1      MfgSys
3. 10-51617a    Here           198      MfgSys
4. 10-97654     There           67      MfgSys

这就是我一直在尝试的(XML代码在底部): 此代码可以工作并将数据输入我的表格:

USE  Database
GO

CREATE TABLE XMLwithOpenXML
(
Id INT IDENTITY PRIMARY KEY,
XMLData XML,
LoadedDateTime DATETIME
)

INSERT INTO XMLwithOpenXML(XMLData, LoadedDateTime)
SELECT CONVERT(XML, BulkColumn) AS BulkColumn, GETDATE() 
FROM OPENROWSET(BULK 'C:\Test\StockStatusReport30597.XML', SINGLE_BLOB) AS x;

SELECT * FROM XMLwithOpenXML

然后我尝试选择数据,但这不起作用:

USE Database
GO

DECLARE @XML AS XML, @hDoc AS INT, @SQL NVARCHAR (MAX)

SELECT @XML = XMLData FROM XMLwithOpenXML

EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML

SELECT PartNum
FROM OPENXML(@hDoc, 'ReportDataSet/PartNum')
WITH 
(
PartNum [varchar](50) '@PartNum'
)

EXEC sp_xml_removedocument @hDoc
GO

如何让上述代码生效?

以下是要下载的XML文件: http://wikisend.com/download/101282/StockStatusReport30597.XML

1 个答案:

答案 0 :(得分:1)

这可能会有所帮助

Declare @xml xml = N'<ReportDataSet 
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
    ...
    </ReportDataSet>'

Select
    N.value('PartNum[1]', 'varchar(20)') PartNum,
    N.value('WarehouseCode[1]', 'varchar(20)') WarhouseCode,
    N.value('OnhandQty[1]', 'int') OnhandQty,
    @xml.value('(/ReportDataSet/Plant/Plant)[1]', 'varchar(20)') Plant
from
    @xml.nodes('/ReportDataSet/StkPart') as T(n)

我已经从下面的示例中删除了一些东西以适应SQLFiddle的限制,但是它使用了添加了适当命名空间的问题的查询:

<强> Example SQLFiddle

对于大数据示例,您需要为查询设置默认命名空间:

With xmlnamespaces (default 'http://www.epicor.com/Mfg/100')
Select
    N.value('PartNum[1]', 'varchar(20)') PartNum,
    N.value('WarehouseCode[1]', 'varchar(20)') WarhouseCode,
    N.value('OnhandQty[1]', 'decimal(10,2)') OnhandQty,
    @xml.value('(/ReportDataSet/Plant/Plant)[1]', 'varchar(20)') Plant
from 
    @xml.nodes('/ReportDataSet/StkPart') as T(n)