努力从 XML 数据中提取值 (T-SQL)

Posted 2023-05-08

【中文标题】努力从 XML 数据中提取值 (T-SQL)

【英文标题】：Struggling with extracting values from XML data (T-SQL)

【发布时间】：2019-12-31 18:36:30

【问题描述】：

这是来自文件底部的我的 XML 数据的 sn-p，显示了结束标签（这是一个巨大的文件）：

<EncounterValidationResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.dhcs.ca.gov/EDS/DHCSResponse" ResponseVersion="1.2">
  <EncounterFileName>EncounterFileName</EncounterFileName>
  <EncounterSubmitterName>EncounterSubmitter</EncounterSubmitterName>
  <EncounterSubmissionDate>2019-12-13T08:47:00.0000000-08:00</EncounterSubmissionDate>
  <ValidationStatus>Accepted</ValidationStatus>
  <Transactions>
    <Transaction>
      <IdentifierName>BatchNumber</IdentifierName>
      <TransactionNumber>1277104</TransactionNumber>
      <Identifiers>
        <Envelope IdentifierName="OriginatorTransactionId" IdentifierValue="1277104-00" />
      </Identifiers>
      <Encounters>
        <Encounter Status="Accepted">
          <IdentifierType>TransactionIdentifier</IdentifierType>
          <EncounterReferenceNumber>8129339999264</EncounterReferenceNumber>
          <EncounterId>1934049991539</EncounterId>
          <EncounterResponses>
            <Response Severity="Warning">
              <Id>0x0006D</Id>
              <Description>MEDS indicates multiple records exist for this beneficiary</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00221</Id>
              <Description>Prescriber Taxonomy (296)  is either not provided or is invalid</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Reason for Service Code (439-E4) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Professional Service Code (440-E5) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Result of Service Code (441-E6) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
          </EncounterResponses>
        </Encounter>
      </Encounters>
    </Transaction>
  </Transactions>
</EncounterValidationResponse>

我正在尝试提取所有 Encounter Status 值、EncounterReferenceNumbers、Response Severity 值、Id 和 Description 值。我希望查询返回五列，即遭遇状态、遭遇参考编号、严重性、ID 和描述。

我已经在互联网上搜索了几天并尝试了几件事，但似乎无法得到它。

感谢任何帮助！

【问题讨论】：

这不是一个有效的 XML。更正它以包含缺少的开始标签。

现在好点了吗？这个文件很大，所以我不能发布整个文件。

是的，现在很清楚了。命名空间是 XML 数据的重要组成部分，因此您无法在不知道此信息的情况下创建正确的查询。请参阅答案。

【参考方案1】：

类似这样的演示：

declare @x XML='<EncounterValidationResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.dhcs.ca.gov/EDS/DHCSResponse" ResponseVersion="1.2">
  <EncounterFileName>EncounterFileName</EncounterFileName>
  <EncounterSubmitterName>EncounterSubmitter</EncounterSubmitterName>
  <EncounterSubmissionDate>2019-12-13T08:47:00.0000000-08:00</EncounterSubmissionDate>
  <ValidationStatus>Accepted</ValidationStatus>
  <Transactions>
    <Transaction>
      <IdentifierName>BatchNumber</IdentifierName>
      <TransactionNumber>1277104</TransactionNumber>
      <Identifiers>
        <Envelope IdentifierName="OriginatorTransactionId" IdentifierValue="1277104-00" />
      </Identifiers>
      <Encounters>
        <Encounter Status="Accepted">
          <IdentifierType>TransactionIdentifier</IdentifierType>
          <EncounterReferenceNumber>8129339999264</EncounterReferenceNumber>
          <EncounterId>1934049991539</EncounterId>
          <EncounterResponses>
            <Response Severity="Warning">
              <Id>0x0006D</Id>
              <Description>MEDS indicates multiple records exist for this beneficiary</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00221</Id>
              <Description>Prescriber Taxonomy (296)  is either not provided or is invalid</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Reason for Service Code (439-E4) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Professional Service Code (440-E5) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
            <Response Severity="Warning">
              <Id>0x00249</Id>
              <Description>Result of Service Code (441-E6) is requested per the payer sheet but no value is provided/specified.</Description>
            </Response>
          </EncounterResponses>
        </Encounter>
      </Encounters>
    </Transaction>
  </Transactions>
</EncounterValidationResponse>';


with xmlnamespaces (DEFAULT 'http://www.dhcs.ca.gov/EDS/DHCSResponse') 
select  t.n.value('@Status','nvarchar(100)') status,
     t.n.value('EncounterReferenceNumber[1]','nvarchar(100)') EncounterReferenceNumber,
     r.n.value('@Severity','nvarchar(100)') Severity,
     r.n.value('Id[1]','nvarchar(100)') Id,
     r.n.value('Description[1]','nvarchar(100)') Description
from @x.nodes('/EncounterValidationResponse/Transactions/Transaction/Encounters/Encounter') t(n)
cross apply t.n.nodes('EncounterResponses/Response') r(n);

【讨论】：

哇！！完美的！！这正是我想要的。我希望我早点寻求帮助；但是，一路走来，我确实学到了很多东西。 Serg，我非常感谢您快速准确的回复。谢谢，谢谢，谢谢。