SQL Server xml 列过滤答案

【问题标题】：SQL Server xml column filteringSQL Server xml 列过滤
【发布时间】：2014-05-07 15:41:16
【问题描述】：

我有一个带有 xml 列的 SQL Server 表。 xml 列有以下 xml 数据。

<organisation>
    <organisation id="1"> <p> Content by Interviewee1 </p1> <p> Interviewee1 is talking about organisation-1 </p1> </organisation>
    <organisation id="2"> <p> Content by Interviewee2 </p1> <p> Interviewee2 is talking about organisation-2 </p1> </organisation>
    <organisation id="1"> <p> Content by Interviewee3 </p1> <p> Interviewee3 is talking about organisation-1 </p1> </organisation>
</organisation>

我需要按组织 ID 过滤。例如，如果我按 Id = 1 过滤，则预期会出现以下 xml。

<organisation>
    <organisation id="1"> <p> Content by Interviewee1 </p1> <p> Interviewee1 is talking about organisation-1 </p1> </organisation>
    <organisation id="1"> <p> Content by Interviewee3 </p1> <p> Interviewee3 is talking about organisation-1 </p1> </organisation>
</organisation>

【问题讨论】：

您的意思是您需要过滤SELECT 还是尝试实际更新列并在此过程中过滤XML？
我需要过滤。当有人说，获取组织 id = 1 的所有面试时，我需要获取组织 id = 1 的面试数据。

标签： sql xml sql-server-2005 sqlxml

【解决方案1】：

这是一种方法：

DECLARE @T TABLE (X XML)

INSERT INTO @T
        ( X )
VALUES  ( '<organisation>
    <organisation id="1"> <p> Content by Interviewee1 </p> <p1> Interviewee1 is talking about organisation-1 </p1> </organisation>
    <organisation id="2"> <p> Content by Interviewee2 </p> <p1> Interviewee2 is talking about organisation-2 </p1> </organisation>
    <organisation id="1"> <p> Content by Interviewee3 </p> <p1> Interviewee3 is talking about organisation-1 </p1> </organisation>
</organisation>'
          )

DECLARE @ID INT = 1


SELECT X.query('<organisation> 
                {for $o in /organisation/organisation
                where $o[@id=sql:variable("@ID")]
                return $o
                } </organisation>' )
FROM @T

【讨论】：

【解决方案2】：

这是另一个...我将 CDATA 标记添加到您的 XML 节点以保留 html 标记，但我不知道这是否适合您。希望它有所帮助（Stuart Ainsworth 提交的第一个答案看起来比这个更干净更好）

DECLARE @columnData XML =
'<organisation>
    <organisation id="1"> <![CDATA[ <p> Content by Interviewee1 </p> <p> Interviewee1 is talking about organisation-1 </p> ]]></organisation>
    <organisation id="2"> <![CDATA[ <p> Content by Interviewee2 </p> <p> Interviewee2 is talking about organisation-2 </p> ]]></organisation>
    <organisation id="1"> <![CDATA[ <p> Content by Interviewee3 </p> <p> Interviewee3 is talking about organisation-1 </p> ]]></organisation>
</organisation>'

DECLARE @temporaryXMLtable TABLE (organisation XML)
INSERT INTO @temporaryXMLtable
SELECT 
fctn.arg.query('.')
FROM @columnData.nodes('/organisation/organisation')
fctn(arg)

DECLARE @filteredXML XML
SET @filteredXML = (SELECT 
        t.organisation.value('(organisation/@id)[1]','VARCHAR(MAX)') AS '@id',
        t.organisation.value('organisation[1]','VARCHAR(MAX)')
    FROM (SELECT organisation from @temporaryXMLtable WHERE (SELECT     organisation.value('(organisation/@id)[1]','VARCHAR(20)')) <> 2)
    t(organisation)
    FOR XML PATH('organisation'), ROOT('organisation'))

SELECT @filteredXML

【讨论】：