예제: ID 및 IDREF 지시문 지정
적용 대상: SQL Server Azure SQL 데이터베이스 Azure SQL Managed Instance
이 예제는 ELEMENTXSINIL 지시문 지정 예제와 거의 동일합니다. 쿼리가 ID 및 IDREF 지시어를 지정한다는 점만 다릅니다. 이러한 지시문은 <OrderHeader>
및 <OrderDetail>
요소의 SalesPersonID 특성의 형식을 덮어쓰고 문서 내 링크를 형성합니다. 덮어쓴 형식을 보려면 스키마가 필요합니다. 따라서 쿼리는 스키마를 검색하기 위해 FOR XML 절에서 XMLDATA 옵션을 지정합니다.
USE AdventureWorks2022;
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 IN (43659, 43661)
UNION ALL
SELECT 2 as Tag,
1 as Parent,
SalesOrderID,
NULL,
NULL,
SalesPersonID,
NULL,
NULL,
NULL,
NULL
FROM Sales.SalesOrderHeader
WHERE SalesOrderID IN (43659, 43661)
UNION ALL
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;
다음은 결과의 일부입니다. 스키마에서 ID 및 IDREF 지시어는 <<OrderHeader>
> 및 <<OrderDetail>
> 요소에 있는 SalesOrderID 특성의 데이터 형식을 덮어 씁니다. 이러한 지시문을 제거하면 스키마는 이러한 특성의 원래 형식을 반환합니다.
<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>
...