迭代xml節點SQL Server上的值

Question

我正在嘗試從每個XML節點提取所有值。 例如對於<Cash>節點，我想恢復值（0,1），但無法獲取它

CREATE TABLE #TableXML (Col1 INT PRIMARY KEY, Col2 XML) 

INSERT INTO #TableXML 
VALUES (1,
'<CookedUP>
  <Evenement Calcul="16">
    <Cookie xmlns="http://services.ariel.morneausobeco.com/2007/02" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
      <AlternateOptionTypeCodes />
      <Cash>0</Cash>
      <CashInterest>0</CashInterest>
      <CashSource>Undefined</CashSource>
      <Code>A</Code>
      <SmallAmount>0</SmallAmount>
      <SmallAmountType>Undefined</SmallAmountType>
    </Cookie>
    <Cookie xmlns="http://services.ariel.morneausobeco.com/2007/02" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
      <AlternateOptionTypeCodes />
      <Cash>1</Cash>
      <CashInterest>2</CashInterest>
      <CashSource>Undefined</CashSource>
      <Code>B</Code>
      <SmallAmount>1</SmallAmount>
      <SmallAmountType>1</SmallAmountType>
    </Cookie>
  </Evenement>
</CookedUP> '
)

WITH XMLNAMESPACES ('http://services.ariel.morneausobeco.com/2007/02' AS ns)
SELECT 
    b.Col1,
    x.XmlCol.value('(ns:Cookie/ns:SmallAmount/text())[2]', 'int') AS SmallAmount,
    x.XmlCol.value('(ns:Cookie/ns:Cash/text())[2]', 'int') AS Cash
FROM
    #TableXML b
CROSS APPLY 
    b.Col2.nodes('CookedUP/Evenement') x(XmlCol);

Answer 1

稍微調整一下您已有的內容，就可以了。 直到Cookie節點，名稱空間才起作用。

我將示例更新為表變量，嘗試一下：

DECLARE @TableXML TABLE(Col1 int primary key, Col2 xml) 
Insert into @TableXML values ( 1,
'<CookedUP>
  <Evenement Calcul="16">
    <Cookie xmlns="http://services.ariel.morneausobeco.com/2007/02" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
      <AlternateOptionTypeCodes />
      <Cash>0</Cash>
      <CashInterest>0</CashInterest>
      <CashSource>Undefined</CashSource>
      <Code>A</Code>
      <SmallAmount>0</SmallAmount>
      <SmallAmountType>Undefined</SmallAmountType>
    </Cookie>
    <Cookie xmlns="http://services.ariel.morneausobeco.com/2007/02" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
      <AlternateOptionTypeCodes />
      <Cash>1</Cash>
      <CashInterest>2</CashInterest>
      <CashSource>Undefined</CashSource>
      <Code>B</Code>
      <SmallAmount>1</SmallAmount>
      <SmallAmountType>1</SmallAmountType>
    </Cookie>
  </Evenement>
</CookedUP> '
)


;WITH XMLNAMESPACES ('http://services.ariel.morneausobeco.com/2007/02' AS ns)
SELECT b.Col1
        --Also include the namespaces here with ns: for each "field" you are after contained within Cookie
       ,XmlCol.value('(./ns:SmallAmount)[1]', 'int') AS SmallAmount
       ,XmlCol.value('(./ns:Cash)[1]', 'int') AS Cash
       ,XmlCol.value('(./ns:Code)[1]', 'nvarchar(10)') AS Code
       ,XmlCol.value('(./ns:CashSource)[1]', 'nvarchar(10)') AS CashSource
FROM @TableXML b
CROSS APPLY b.Col2.nodes('/CookedUP/Evenement/ns:Cookie') AS x(XmlCol) --ns, the namespace, only at Cookie node.