Sql server 2012 SQLServerXQuery始终包含两个字段

我只想从xml字段的一列中获取一些数据：

<CDirData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://Fnet.ESB.Schemas.CentroDirectivo.CDirData">
  <ProcedureData xmlns="">
    <ProcedureId>7001</ProcedureId>
    <CentroDirectivo>Subsecretaria</CentroDirectivo>
  </ProcedureData>
  <SolicitudData xmlns="">
...

但始终返回字段concat

我只需要第一个

---

提前谢谢

将XPath表达式放在括号中，并添加[1]以仅获取组中的第一个元素

DECLARE @x XML = '<CDirData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://Fnet.ESB.Schemas.CentroDirectivo.CDirData">
  <ProcedureData xmlns="">
    <ProcedureId>7001</ProcedureId>
    <CentroDirectivo>Subsecretaria1</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7002</ProcedureId>
    <CentroDirectivo>Subsecretaria2</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7003</ProcedureId>
    <CentroDirectivo>Subsecretaria3</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7004</ProcedureId>
    <CentroDirectivo>Subsecretaria4</CentroDirectivo>
  </ProcedureData>
  </CDirData>'

SELECT
    @x.query('(//*[local-name()="ProcedureId"])[1]').value('.','nvarchar(max)') as R

DECLARE@xxml='1〕
7001
地下室1
7002
秘书处下2
7003
秘书处下3
7004
地下室4
'
挑选
@x、 查询（'（/*[local-name（）=“ProcedureId”]）[1]'）。值（'.'，'nvarchar（max）'）为R

非常有用，谢谢大家！

DECLARE @x XML = '<CDirData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://Fnet.ESB.Schemas.CentroDirectivo.CDirData">
  <ProcedureData xmlns="">
    <ProcedureId>7001</ProcedureId>
    <CentroDirectivo>Subsecretaria1</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7002</ProcedureId>
    <CentroDirectivo>Subsecretaria2</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7003</ProcedureId>
    <CentroDirectivo>Subsecretaria3</CentroDirectivo>
  </ProcedureData>
  <ProcedureData xmlns="">
    <ProcedureId>7004</ProcedureId>
    <CentroDirectivo>Subsecretaria4</CentroDirectivo>
  </ProcedureData>
  </CDirData>'

SELECT
    @x.query('(//*[local-name()="ProcedureId"])[1]').value('.','nvarchar(max)') as R