将 SQL FOR XML 查询分解为特定命名的父元素

Question

我想做的事情我认为很简单，所以如果您熟悉 SQL Server 中的FOR XML，我建议您跳到底部并阅读 粗体文本部分： )

我正在尝试使用 SQL Server 2005 中的FOR XML 语句来实现我需要的结果。目前我有这个...

SELECT  
    txtReasonTypeID AS [ReasonTypeID]
  ,
    (SELECT 
    [Reason].intReasonID, 
    [Reason].txtReason
    FROM    CST_lnkProfileReason INNER JOIN 
    CST_tblReason AS [Reason] ON CST_lnkProfileReason.intReasonID = [Reason].intReasonID 
    WHERE   CST_lnkProfileReason.intProfileID = @intProfileID
    AND   CST_lnkProfileReason.txtReasonTypeID = [Response].txtReasonTypeID
    ORDER BY Reason.txtReason
    FOR XML AUTO, TYPE
    )
  ,
    (SELECT 
    [PulledSupportReason].intReasonID, 
    [PulledSupportReason].txtReason
    FROM    CST_lnkPulledSupportReason INNER JOIN 
    CST_tblReason AS [PulledSupportReason] ON CST_lnkPulledSupportReason.intReasonID = [PulledSupportReason].intReasonID 
    WHERE   CST_lnkPulledSupportReason.intProfileID = @intProfileID
    AND   CST_lnkPulledSupportReason.txtReasonTypeID = [Response].txtReasonTypeID
    ORDER BY [PulledSupportReason].txtReason
    FOR XML AUTO, TYPE
    )
FROM    CST_tblReasonTypes AS [Response]
FOR XML AUTO, ROOT('ResponseProfile')

正在返回以下 XML...

<ResponseProfile>
  <Response ReasonTypeID="ExampleType">
    <Reason intReasonID="106" txtReason="Call Back - 1"/>
    <Reason intReasonID="147" txtReason="Call Back - 2"/>
    <PulledSupportReason intReasonID="892" txtReason="PS Reason a"/>
    <PulledSupportReason intReasonID="893" txtReason="PS Reason b"/>
  </Response>
   ...more <Response>s
</ResponseProfile>

如您所见，Reason 元素和PulledSupportReason 元素来自同一个表，尽管它们在此查询中是单独的元素。 （可能是一个糟糕的设计案例）但是 - 我想要的很简单，在 Reason 和 PulledSupportReason 元素周围放置一个父元素 例如...

<ResponseProfile>
  <Response ReasonTypeID="ExampleType">
     <Reasons>
        <Reason intReasonID="106" txtReason="Call Back - 1"/>
        <Reason intReasonID="147" txtReason="Call Back - 2"/>
     </Reasons>
     <PulledSupportReasons>  
        <PulledSupportReason intReasonID="892" txtReason="PS Reason a"/>
        <PulledSupportReason intReasonID="893" txtReason="PS Reason b"/>
     </PulledSupportReasons>
  </Response>
   ...more <Response>s
</ResponseProfile>

我想我可以使用XML PATH 或XML EXPLICIT 来实现这一点？感谢您的帮助:)

Answer 1

尝试使用FOR XML PATH('....'), ROOT('....') - 有了它，你应该能够实现你想要的。

我正在为第二个子选择说明这一点 - 为第一个子选择相应地调整：

(SELECT 
    [PulledSupportReason].intReasonID, 
    [PulledSupportReason].txtReason
 FROM    
     CST_lnkPulledSupportReason 
 INNER JOIN 
    CST_tblReason AS [PulledSupportReason] ON CST_lnkPulledSupportReason.intReasonID = [PulledSupportReason].intReasonID 
 WHERE   
     CST_lnkPulledSupportReason.intProfileID = @intProfileID
     AND CST_lnkPulledSupportReason.txtReasonTypeID = [Response].txtReasonTypeID
 ORDER BY 
     [PulledSupportReason].txtReason
 FOR XML PATH('PulledSupportReason'), TYPE
) AS 'PulledSupportReasons'

这应该可行，我希望！ （不能真正测试，因为我手边没有你的桌子可以看）

内部的FOR XML PATH(PulledSupportReason') 定义要使用的最里面的 XML 标记，为整个子选择 (AS 'PulledSupportReasons') 添加一个别名会为该子选择提供一个与定义的别名相等的包装 XML 标记。