将数据从xml列插入临时表

Question

我有一个看起来像的xml列

SET @XMLData = '<ArrayOfEntityNested xmlns:i="http://www.w3.org/2001/XMLSchema-instance"
                                     xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.Bijak">
                   <EntityNested>
                       <Id xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto">1</Id>
                       <Date xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">0001-01-01T00:00:00</Date>
                       <Description xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">deesc</Description>
                       <Number xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak" i:nil="true" />
                   </EntityNested>
                 </ArrayOfEntityNested>'

我需要将XML中的数据插入到临时表中.

这里

为此,我使用以下代码.但它不起作用,并没有将任何数据插入临时表.

--Variables Decleration
DECLARE @XMLData VARCHAR(MAX)
DECLARE @idoc INT

-- Creating Temporary Table
CREATE TABLE #TEMP_TABLE
(
    REC_ID INT IDENTITY(1,1),
    [Id] INT,
    [Date] VARCHAR(50),
    [Number] VARCHAR(50),
);

--Case 1
SET @XMLData = '<ArrayOfEntityNested xmlns:i="http://www.w3.org/2001/XMLSchema-instance"
                                     xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.Bijak">
                   <EntityNested>
                      <Id xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto">1</Id>
                      <Date xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">0001-01-01T00:00:00</Date>
                      <Number xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak" i:nil="true" />
                   </EntityNested>
                </ArrayOfEntityNested>
                               '
--Reading Data from XML and inserting into Temp Table
EXECUTE sp_xml_preparedocument @idoc OUTPUT, @XMLData

INSERT INTO #TEMP_TABLE
   SELECT * 
   FROM OpenXML(@idoc,'/ArrayOfEntityNested/EntityNested', 1)
        WITH #TEMP_TABLE

EXECUTE sp_xml_removedocument @idoc

--Displaying data from Temp Table
SELECT * FROM #TEMP_TABLE
DROP TABLE #TEMP_TABLE;

但是,如果xml格式正确可能如下所示:

SET @XMLData = '<ArrayOfEntityNested>
                   <EntityNested>
                      <Id>1</Id>
                      <Date>0001-01-01T00:00:00</Date>
                      <Description>deesc</Description>
                      <EmployeeId>2</EmployeeId>
                      <IsDeleted>false</IsDeleted>
                      <LoadingPermitTruckId>7541</LoadingPermitTruckId>
                    </EntityNested>
                 </ArrayOfEntityNested>'

然后它工作.

请帮我.

Answer 1

首先 - 请使用适当的数据类型!如果您的源数据是XML - 为什么不使用XML数据类型？

另外,如果你Date的表中有一个- 为什么不是那个DATE或DATETIME类型？为什么是Number一个VARCHAR(50)？

没有意义......

然后:您不是在查看XML文档中存在的XML命名空间 - 但您必须这样做!

最后 - 我建议使用原生XQuery支持而不是遗留,弃用sp_xml_preparedocument/ OpenXML方法....

看起来容易得多,对我来说更清楚......

用这个:

-- variable declaration
DECLARE @XMLData XML

-- creating temporary table
CREATE TABLE #TEMP_TABLE
(
    REC_ID INT IDENTITY(1,1),
    [Id] INT,
    [Date] DATETIME2(3),
    [Number] INT
); 

然后使用适当的XQuery语句,包括XML命名空间来处理数据:

SET @XMLData = '<ArrayOfEntityNested xmlns:i="http://www.w3.org/2001/XMLSchema-instance"
                                 xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.Bijak">
                    <EntityNested>
                       <Id xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto">1</Id>
                       <Date xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">0001-01-01T00:00:00</Date>
                       <Number xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak" i:nil="true" />
                    </EntityNested>
                    <EntityNested>
                       <Id xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto">42</Id>
                       <Date xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">2013-12-22T14:45:00</Date>
                       <Number xmlns="http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak">373</Number>
                    </EntityNested>
                 </ArrayOfEntityNested>'

;WITH XMLNAMESPACES ('http://schemas.datacontract.org/2004/07/Gbms.Dto.Bijak' AS ns1,
                'http://schemas.datacontract.org/2004/07/Gbms.Dto' AS ns2,
                'http://schemas.datacontract.org/2004/07/Gbms.Dto.VirginBijak' AS ns3)
INSERT INTO #TEMP_TABLE(ID, Date, Number)
   SELECT
  xc.value('(ns2:Id)[1]', 'int'),
  xc.value('(ns3:Date)[1]', 'DateTime2'),
  xc.value('(ns3:Number)[1]', 'int')
   FROM 
  @XmlData.nodes('/ns1:ArrayOfEntityNested/ns1:EntityNested') AS xt(xc)