在SQL Server查询中使用For Xml子句指定XMLNAMESPACE，显式模式

我试图用FOR XML子句EXPLICIT模式查询某个数据库，但我不知道如何使用此模式指定XMLNAMESPACE和模式，就像使用WITH XMLNAMESPACE同时使用AUTO模式或RAW在SQL Server查询中使用For Xml子句指定XMLNAMESPACE，显式模式

此MSDN示例查询，在其结果其指定Schema1作为结果XML

USE AdventureWorks2012; 
GO 
SELECT 1 as Tag, 
0 as Parent, 
SalesOrderID as [OrderHeader!1!SalesOrderID!id], 
OrderDate  as [OrderHeader!1!OrderDate], 
CustomerID as [OrderHeader!1!CustomerID], 
NULL   as [SalesPerson!2!SalesPersonID], 
NULL   as [OrderDetail!3!SalesOrderID!idref], 
NULL   as [OrderDetail!3!LineTotal], 
NULL   as [OrderDetail!3!ProductID], 
NULL   as [OrderDetail!3!OrderQty] 
FROM Sales.SalesOrderHeader 
WHERE SalesOrderID=43659 or SalesOrderID=43661 
.... 
SELECT 3 as Tag, 
1 as Parent, 
SOD.SalesOrderID, 
NULL, 
NULL, 
SalesPersonID, 
SOH.SalesOrderID, 
LineTotal, 
ProductID, 
OrderQty 
FROM Sales.SalesOrderHeader SOH,Sales.SalesOrderDetail SOD 
WHERE SOH.SalesOrderID = SOD.SalesOrderID 
AND  (SOH.SalesOrderID=43659 or SOH.SalesOrderID=43661) 
ORDER BY [OrderHeader!1!SalesOrderID!id], [SalesPerson!2!SalesPersonID], 
    [OrderDetail!3!SalesOrderID!idref],[OrderDetail!3!LineTotal] 
FOR XML EXPLICIT, XMLDATA

一个模式，这里是样品结果：

<Schema name="Schema1" xmlns="urn:schemas-microsoft-com:xml-data"     xmlns:dt="urn:schemas-microsoft-com:datatypes"> 
    <ElementType name="OrderHeader" content="mixed" model="open"> 
    <AttributeType name="SalesOrderID" dt:type="id" /> 
    <AttributeType name="OrderDate" dt:type="dateTime" /> 
    <AttributeType name="CustomerID" dt:type="i4" /> 
    <attribute type="SalesOrderID" /> 
    <attribute type="OrderDate" /> 
    <attribute type="CustomerID" /> 
    </ElementType> 
     <ElementType name="SalesPerson" content="mixed" model="open"> 
    <AttributeType name="SalesPersonID" dt:type="i4" /> 
    <attribute type="SalesPersonID" /> 
     </ElementType> 
     <ElementType name="OrderDetail" content="mixed" model="open"> 
    <AttributeType name="SalesOrderID" dt:type="idref" /> 
    <AttributeType name="LineTotal" dt:type="number" /> 
    <AttributeType name="ProductID" dt:type="i4" /> 
    <AttributeType name="OrderQty" dt:type="i2" /> 
    <attribute type="SalesOrderID" /> 
    <attribute type="LineTotal" /> 
    <attribute type="ProductID" /> 
    <attribute type="OrderQty" /> 
     </ElementType> 
     </Schema> 
     <OrderHeader xmlns="x-schema:#Schema1" SalesOrderID="43659" OrderDate="2001-07-01T00:00:00" CustomerID="676"> 
     <SalesPerson SalesPersonID="279" /> 
    <OrderDetail SalesOrderID="43659" LineTotal="10.373000" ProductID="712" OrderQty="2" /> 
    ... 
    </OrderHeader> 
    ...

来源

2012-07-09 Mido

从MSDN查询包括一个模式，因为它使用的XMLDATA指令。

指定的内联XML数据缩减（XDR）架构应该返回。该架构作为内联架构添加到文档中。有关正在运行的示例，请参阅将FOR RAW模式与FOR XML一起使用。

如果你想包含一个带有显式模式的命名空间，你必须自己添加它，并相应地命名你的元素和属性。

declare @T table 
(
    id int, 
    title varchar(50) 
) 

insert into @T values(451, 'Receptionist') 
insert into @T values(1025, 'Secretary') 

select 1 as Tag, 
     null as Parent, 
     'xx.yy.zz' as [root!1!xmlns:ns], 
     null as [ns:item!2!ns:id], 
     null as [ns:item!2!ns:title] 
union all 
select 2 as Tag, 
     1 as Parent, 
     null, 
     id, 
     title 
from @T 
for xml explicit

结果：

<root xmlns:ns="xx.yy.zz"> 
    <ns:item ns:id="451" ns:title="Receptionist" /> 
    <ns:item ns:id="1025" ns:title="Secretary" /> 
</root>

来源

2012-07-09 14:36:41

在SQL Server查询中使用For Xml子句指定XMLNAMESPACE，显式模式

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