SQL Server-FOR XML PATH：如何将xmlns：xsd添加到根元素？

Question

我正在使用此查询：

select 
    SalesOrderID, OrderDate, DueDate, rowguid 
from 
    Sales.SalesOrderHeader
where 
    SalesOrderID between 43661 and 43662
for xml path('Order'), Root('AllOrders')

输出为：

<AllOrders>
  <Order>
    <SalesOrderID>43661</SalesOrderID>
    <OrderDate>2005-07-01T00:00:00</OrderDate>
    <DueDate>2005-07-13T00:00:00</DueDate>
    <rowguid>D91B9131-18A4-4A11-BC3A-90B6F53E9D74</rowguid>
  </Order>
  <Order>
    <SalesOrderID>43662</SalesOrderID>
    <OrderDate>2005-07-01T00:00:00</OrderDate>
    <DueDate>2005-07-13T00:00:00</DueDate>
    <rowguid>4A1ECFC0-CC3A-4740-B028-1C50BB48711C</rowguid>
  </Order>
</AllOrders>

我希望这是预期的输出（已添加xmlns:xsd ）：

<AllOrders xmlns:xsd="some schema URL">
  <Order>
    <SalesOrderID>43661</SalesOrderID>
    <OrderDate>2005-07-01T00:00:00</OrderDate>
    <DueDate>2005-07-13T00:00:00</DueDate>
    <rowguid>D91B9131-18A4-4A11-BC3A-90B6F53E9D74</rowguid>
  </Order>
  <Order>
    <SalesOrderID>43662</SalesOrderID>
    <OrderDate>2005-07-01T00:00:00</OrderDate>
    <DueDate>2005-07-13T00:00:00</DueDate>
    <rowguid>4A1ECFC0-CC3A-4740-B028-1C50BB48711C</rowguid>
  </Order>
</AllOrders>

我要查询哪些修改以实现上述输出？

Answer 1

您可以使用XMLNAMESPACES ；

WITH XMLNAMESPACES ('http://foo.com/bar' AS xsd)
select SalesOrderID,OrderDate,DueDate...

Answer 2

通常，您始终可以转换为nvarchar（max）并进行文本替换。

这意味着您可以这样做

select replace(cast((
    select SalesOrderID,OrderDate,DueDate,rowguid from Sales.SalesOrderHeader
    where SalesOrderID between 43661 and 43662
    for xml path('Order'), Root('AllOrders')
) as nvarchar(max)), N'<AllOrders>', N'<AllOrders xmlns:xsd="http://foo.com/bar">')

尽管我更希望您按照@AlexK的建议进行操作