通过具有多个父节点和多个子节点的 OpenXML 解析 XML答案

【问题标题】：Parsing XML by OpenXML with multiple Parent nodes with multiple child nodes通过具有多个父节点和多个子节点的 OpenXML 解析 XML
【发布时间】：2016-02-18 05:46:19
【问题描述】：

我有以下 XML：

<Report>
    <Accounts>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>45555</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>502</PaymentCode>
              <PaymentAmount currCode="GBP">7000.00000000</PaymentAmount>
            </PaymentData>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>50000</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
    </Accounts>
</Report>

我的 SQL 代码正在使用以下代码对其进行解析：

SELECT  
            [currCode]  AS [Currency], 
            [AccountBalance] AS [AccountBalance],
            [PaymentCode] AS [PaymentCode],
            [PaymentCurrCode] AS [PaymentCurrCode],
            [PaymentAmount] AS [PaymentAmount]
        FROM OPENXML(@hDoc, 'Report/Accounts/Account',2)
            WITH 
            (
                [currCode] [nchar](3) 'currCode',
                [AccountBalance] [decimal](18, 0) 'AccountBalance',

                [PaymentCode] [nchar](10) 'Payments/PaymentData/PaymentCode',
                [PaymentCurrCode] [nchar](3) 'Payments/PaymentData/PaymentAmount/@currCode',
                [PaymentAmount] [decimal](18, 0) 'Payments/PaymentData/PaymentAmount'
            )

我得到以下结果：

currCode | AccountBalance | PaymentCode | PaymentCurrCode | PaymentAmount
————————————————————————————————————————————————————————————————————————————————
USD      | 45555          | 502         |   GBP           |7000.00000000
USD      | 50000          | 501         |   USD           |5000.00000000

我正在尝试使用相同的 openXml 查询获取多个支付数据和多个帐户。如何获取具有以下结果的所有数据：

currCode | AccountBalance | PaymentCode | PaymentCurrCode | PaymentAmount
————————————————————————————————————————————————————————————————————————————————
USD      | 45555          | 502         |   GBP           |7000.00000000
USD      | 45555          | 501         |   USD           |5000.00000000
USD      | 50000          | 501         |   USD           |5000.00000000

【问题讨论】：

嗨，Shuvra，OPENXML 绝对过时了...您是否必须坚持这种方法，或者它也可能是一种更现代的方法？
嗨，Shuvra，没有等到你回答，刚刚发布了两个答案。选择你喜欢的任何东西 :-) （顺便说一句：我投票赞成这个问题，因为它非常清楚：样本数据、自己的方法、错误的输出和预期的输出。如果只是所有这样的问题......谢谢！
嗨Shnugo，很抱歉回复晚了。 OPENXML 有效，但正如您所建议的，我将尝试使用@XML.nodes。再次感谢您的帮助。

标签： sql xml openxml

【解决方案1】：

这是一种使用 XQuery/XPath 方法的最新和最先进的方法。结果是一样的，只是更快更好地阅读：

DECLARE @XML XML=
'<Report>
    <Accounts>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>45555</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>502</PaymentCode>
              <PaymentAmount currCode="GBP">7000.00000000</PaymentAmount>
            </PaymentData>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>50000</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
    </Accounts>
</Report>';

SELECT Payment.value('(../../Currency)[1]','nchar(3)') AS currCode
      ,Payment.value('(../../AccountBalance)[1]','decimal(18,0)') AS AccountBalance
      ,Payment.value('PaymentCode[1]','nchar(10)') AS PaymentCode
      ,Payment.value('PaymentAmount[1]/@currCode','nchar(3)') AS PaymentCurrCode
      ,Payment.value('PaymentAmount[1]','decimal(18,0)') AS PaymentCurrCode
FROM @XML.nodes('Report/Accounts/Account/Payments/PaymentData') AS One(Payment)

【讨论】：

【解决方案2】：

这应该适合你：

DECLARE @XML XML=
'<Report>
    <Accounts>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>45555</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>502</PaymentCode>
              <PaymentAmount currCode="GBP">7000.00000000</PaymentAmount>
            </PaymentData>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
        <Account>
          <Currency>USD</Currency>
          <AccountBalance>50000</AccountBalance>
          <Payments>
            <PaymentData>
              <PaymentCode>501</PaymentCode>
              <PaymentAmount currCode="USD">5000.00000000</PaymentAmount>
            </PaymentData>
          </Payments>
        </Account>
    </Accounts>
</Report>';

DECLARE @hDoc INT;
EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML; 

SELECT  
            [currCode]  AS [Currency], 
            [AccountBalance] AS [AccountBalance],
            [PaymentCode] AS [PaymentCode],
            [PaymentCurrCode] AS [PaymentCurrCode],
            [PaymentAmount] AS [PaymentAmount]
        FROM OPENXML(@hDoc, 'Report/Accounts/Account/Payments/PaymentData',2)
            WITH 
            (
                [currCode] [nchar](3) '../../Currency',
                [AccountBalance] [decimal](18, 0) '../../AccountBalance',

                [PaymentCode] [nchar](10) 'PaymentCode',
                [PaymentCurrCode] [nchar](3) 'PaymentAmount/@currCode',
                [PaymentAmount] [decimal](18, 0) 'PaymentAmount'
            )
EXEC sp_xml_removedocument @hDoc;

【讨论】：