Question

我的查询如下（样本）。

Select 'Somthing' as Title,
       'Some notes' as Notes,
        (Select Path1
        From (Select 'One' Path1
              union
              Select 'Two' Path1
              union
              Select 'Three' Path1) T        
         FOR XML PATH('Image'),ROOT('Images'), ELEMENTS, TYPE),

         'Other value' as Value

FOR XML PATH('ItemRow'),TYPE,ELEMENTS

xml以下的输出

<ItemRow>
  <Title>Somthing</Title>
  <Notes>Some notes</Notes>
  <Images>
    <Image>
      <Path1>One</Path1>
    </Image>
    <Image>
      <Path1>Two</Path1>
    </Image>
    <Image>
      <Path1>Three</Path1>
    </Image>
  </Images>
  <Value>Other value</Value>
</ItemRow>

我正在尝试将Notes和Images放入父节点，因此它应该如下所示

<ItemRow>
  <Title>Somthing</Title>
  <SomeParentNode>
    <Notes>Some notes</Notes>
    <Images>
      <Image>
        <Path1>One</Path1>
      </Image>
      <Image>
        <Path1>Two</Path1>
      </Image>
      <Image>
        <Path1>Three</Path1>
      </Image>
    </Images>
  </SomeParentNode>
  <Value>Other value</Value>
</ItemRow>

这可能吗？

Answer 1

只需像这样添加SomeParentNode：

Select 'Somthing' as Title,
       'Some notes' as 'SomeParentNode/Notes', -- here
        (Select Path1 
        From (Select 'One' Path1
              union
              Select 'Two' Path1
              union
              Select 'Three' Path1) T        
         FOR XML PATH('Image'),ROOT('Images'), ELEMENTS, TYPE) AS 'SomeParentNode', -- and here

         'Other value' as [Value]

FOR XML PATH('ItemRow'),TYPE,ELEMENTS

输出：

<ItemRow>
  <Title>Somthing</Title>
  <SomeParentNode>
    <Notes>Some notes</Notes>
    <Images>
      <Image>
        <Path1>One</Path1>
      </Image>
      <Image>
        <Path1>Two</Path1>
      </Image>
      <Image>
        <Path1>Three</Path1>
      </Image>
    </Images>
  </SomeParentNode>
  <Value>Other value</Value>
</ItemRow>

Answer 2

很长一段路，使用子查询将元素放在正确的路径中：

SELECT
    'Something' AS Title,
    (
        SELECT
            'Some Notes' AS Notes,
            (
                SELECT
                    Path1
                FROM    
                    (VALUES('One'),('Two'),('Three')) AS T(Path1)
                FOR 
                    XML PATH('Image'), TYPE
            )
        FOR 
            XML PATH('Images'), TYPE
    ),
    'Other value' as Value
FOR
    XML PATH('ItemRow')

通过在字段名称中添加根元素名称来在适当位置选择元素的简短方法

SELECT
    'Something' AS Title,
    'Some Notes' AS [Images/Notes],
    (
        SELECT
            Path1
        FROM    
            (VALUES('One'),('Two'),('Three')) AS T(Path1)
        FOR 
            XML PATH('Image'), TYPE
    ) AS [Images],
    'Other value' as Value
FOR
    XML PATH('ItemRow')

两者都导致：

<ItemRow>
  <Title>Something</Title>
  <Images>
    <Notes>Some Notes</Notes>
    <Image>
      <Path1>One</Path1>
    </Image>
    <Image>
      <Path1>Two</Path1>
    </Image>
    <Image>
      <Path1>Three</Path1>
    </Image>
  </Images>
  <Value>Other value</Value>
</ItemRow>

Sql - FOR XML路径查询问题

2 个答案: