如何分解xml并保留关联

Question

我有以下xml。如果你运行它，你会得到3个网格结果。我正在与最后一个网格结果作斗争，因为我需要该网格结果具有相关的关联。换句话说，我希望在网格结果#3中获得来自网格结果#2的相关RowID。我该怎么做？最终，网格结果#2将被插入到一个永久表中，该表具有一个名为SalesOrderID的主键。网格结果#3将进入另一个表，SalesOrderID作为外键。

非常感谢！

    DECLARE @string VARCHAR(max);
DECLARE @xml XML;
SET @string ='<ShipmentConfirmationMessage>
  <ExternalCorrelationId>249801</ExternalCorrelationId>
  <ShippedItems>
    <ShipmentConfirmationLine>
      <SalesOrderNumber>SalesOrder1</SalesOrderNumber>
      <ItemId>10982</ItemId>
      <IsBackOrdered>false</IsBackOrdered>
      <TrackingNumber>Track1234</TrackingNumber>
      <Lots>
        <Lot>
          <LotNumber>789</LotNumber>
          <ExpiryDate>2013-12-20T00:00:00</ExpiryDate>
          <Quantity>1.55</Quantity>
        </Lot>
      </Lots>
    </ShipmentConfirmationLine>
    <ShipmentConfirmationLine>
      <SalesOrderNumber>SalesOrder2</SalesOrderNumber>
      <ItemId>10983</ItemId>
      <IsBackOrdered>true</IsBackOrdered>
      <TrackingNumber>Track123456789</TrackingNumber>
      <Lots>
        <Lot>
          <LotNumber>1</LotNumber>
          <ExpiryDate>2013-12-20T00:00:00</ExpiryDate>
          <Quantity>3.30</Quantity>
        </Lot>
        <Lot>
          <LotNumber>21</LotNumber>
          <ExpiryDate>2016-12-20T00:00:00</ExpiryDate>
          <Quantity>34.30</Quantity>
        </Lot>
      </Lots>
    </ShipmentConfirmationLine>
      </ShippedItems>
</ShipmentConfirmationMessage>
';
SET @xml = CONVERT(XML, @string, 1);
-- header
SELECT
@xml.value('/ShipmentConfirmationMessage[1]/ExternalCorrelationId[1]', 'varchar(50)') PurchaseOrderID
-- detail lines
SELECT IDENTITY(int, 1,1) AS RowID
 ,doc.col.value('SalesOrderNumber[1]', 'varchar(50)') SalesOrderNumber
 ,doc.col.value('ItemId[1]', 'varchar(50)') ItemId
 ,doc.col.value('IsBackOrdered[1]', 'varchar(50)') IsBackOrdered
 ,doc.col.value('TrackingNumber[1]', 'varchar(50)') TrackingNumber
 INTO #tmpDetails
FROM @xml.nodes('/ShipmentConfirmationMessage/ShippedItems/ShipmentConfirmationLine') doc(col) 
select * from #tmpDetails
-- lots associated with detail lines
SELECT
'Relevant RowID goes here',
doc.col.value('LotNumber[1]', 'varchar(50)') LotNumber
,doc.col.value('ExpiryDate[1]', 'datetime') ExpiryDate
,doc.col.value('Quantity[1]', 'decimal(13,5)') Quantity
 FROM @xml.nodes('/ShipmentConfirmationMessage/ShippedItems/ShipmentConfirmationLine/Lots/Lot') doc(col) 
 drop table #tmpDetails

Answer 1

将Lots的XML存储在#tmpDetails.Lots 中

SELECT IDENTITY(int, 1,1) AS RowID
 ,doc.col.value('SalesOrderNumber[1]', 'varchar(50)') SalesOrderNumber
 ,doc.col.value('ItemId[1]', 'varchar(50)') ItemId
 ,doc.col.value('IsBackOrdered[1]', 'varchar(50)') IsBackOrdered
 ,doc.col.value('TrackingNumber[1]', 'varchar(50)') TrackingNumber
 ,doc.col.query('Lots') Lots
 INTO #tmpDetails
FROM @xml.nodes('/ShipmentConfirmationMessage/ShippedItems/ShipmentConfirmationLine') doc(col) 

在第三个查询中使用#tmpDetails和CROSS APPLY来分解Lots中的XML。

SELECT
  D.RowID
 ,doc.col.value('LotNumber[1]', 'varchar(50)') LotNumber
 ,doc.col.value('ExpiryDate[1]', 'datetime') ExpiryDate
 ,doc.col.value('Quantity[1]', 'decimal(13,5)') Quantity
FROM #tmpDetails D
  CROSS APPLY D.Lots.nodes('Lots/Lot') doc(col)