sql-server - 在 SQL 中用外部节点包装内部 XML 节点

Question

采用以下TSQL

SELECT 
    o.id as '@id',
    (SELECT 
         op.id as '@orderid'
     FROM 
         Orders o
     INNER JOIN 
         OrderParts op ON o.id = op.orderId
     FOR XML PATH ('orderpart'), TYPE)
FROM 
    Orders o
FOR XML PATH ('order'), ROOT('application')

从这些表中生成。

订单

Id   type
----------------
1    Pending
2    Active

订购零件

id   orderid
-------------
1       1
2       1
3       3
4       2

它生成这个 XML

<application>
  <order id="1">
    <orderpart orderid="1" />
    <orderpart orderid="2" />
    <orderpart orderid="3" />
    <orderpart orderid="4" />
  </order>
  <order id="2">
    <orderpart orderid="1" />
    <orderpart orderid="2" />
    <orderpart orderid="3" />
    <orderpart orderid="4" />
  </order>
</application>

如何使用 TSQL 在 orders 和 orderparts 周围添加外部复数标签，使其看起来如下所示？

<application>
  <orders>
    <order id="1">
      <orderparts>
        <orderpart orderid="1" />
        <orderpart orderid="2" />
        <orderpart orderid="3" />
        <orderpart orderid="4" />
      </orderparts>
    </order>
    <order id="2">
      <orderparts>
        <orderpart orderid="1" />
        <orderpart orderid="2" />
        <orderpart orderid="3" />
        <orderpart orderid="4" />
      </orderparts>
    </order>
  </orders>
</application>

谢谢!

Answer 1

SELECT 
(
     SELECT o.id AS '@id',
     (
          SELECT op.id as '@orderid'
          FROM OrderParts op 
          WHERE op.orderID = o.ID
          FOR XML PATH ('orderpart'), TYPE
     ) AS 'OrderParts'
     FROM Orders o
     FOR XML PATH ('order'),TYPE
 )
 FOR XML PATH ('orders'),ROOT('application')