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  • SQL 2005中XML和二维关系行的转换

    SQL2005中完全支持XML类型,我们可能使用XML来存储非关系型的数据.下面的例子演示了:

    1.从Xml文件读出数据到xml变量中

    2.将Xml变量中的数据转换成二维表输出

    declare @xml as xml;
    --
    --select @xml =bulkcolumn from openrowset(bulk 'c:\word.xml', single_blob) as x;
    --
    --
    ----select    x.value('Word[1]', 'nvarchar(50)') as Word,
    ----        x.value('Meaning[1]', 'nvarchar(500)') as Meanning
    ----from @xml.nodes('/Daily-Words/WordItem') tab(x);
    --
    --select x.value('Word[1]', 'nvarchar(50)'),
    --        x.value('Meaning[1]', 'nvarchar(500)')
    --from @xml.nodes('/Daily-Words/WordItem') as tab(x);
    
    set @xml='<masterx><row><id>1</id><name>Rock</name></row>
    <row><id>2</id><name>ATZ</name></row></masterx>';
    
    select x.value('id[1]', 'bigint') as id,
            x.value('name[1]', 'nvarchar(255)') as name
    from @xml.nodes('/masterx/row') as tab(x)

    c:\word.xml内容:

    <?xml version="1.0" encoding="utf-8"?>
    <Daily-Words xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
       <WordItem>
        <Word>surprise</Word>
        <Meaning>[n]惊?奇?, 惊?讶?令?人?吃?惊?的?事?物?; [vt]使?惊?奇?, 使?诧?异?意?外?发?现?[撞?见?], 出?其?不?意?获?得?</Meaning>
        <Sample1 />
        <Sample2 />
      </WordItem>  
      <WordItem>
        <Word>simultaneous</Word>
        <Meaning>[adj]同?时?发?生?的?; 同?时?存?在?的?</Meaning>
        <Sample1 />
        <Sample2 />
      </WordItem>
    </Daily-Words>

    能使用Xml的地方:

    1.存储过程传多行数据为参数

    2.表中存放Xml序列化的对象.

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  • 原文地址:https://www.cnblogs.com/rockniu/p/1593196.html
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