XML列提取！[CDATA []]

Question

我正在運行以下查詢以從xml列中提取數據...問題是如何提取數據！[CDATA [「」]]？

select   
    CAST(xml as xml).value('(//@nodeName)[1]','nvarchar(20)') as NodeName,  
    CAST(xml as xml).value('(//![CDATA [prdDetDesc]])[1]','nvarchar(225)') as DetDesc, 
    CAST(xml as xml).value('(//prdImg)[1]','nvarchar(1000)') as prdImage 
from [dbo].[cmsContentXml]) 

我需要提取數據是[ 「]」]

感謝之間存在提前

Answer 1

沒有什麼特別有CDATA節。

declare @xml xml = 
'<productDetailsDescription> 
    <![CDATA[Candidates for this exam are professionals who typically pursue careers as database administrators, database developers, or business intelligence developers. Additionally, they can be people who do not work with Microsoft SQL Server as a part of their primary job functions but who want to show their breadth of technology experience, such as developers, systems administrators, and others. ]]> 
</productDetailsDescription> 
<productImage>/m/967558/40.jpg</productImage> 
<application>Slmnoasp</application>' 

select @xml.value('/productDetailsDescription[1]', 'nvarchar(225)') 

它也處理混合值。

declare @xml xml = 
'<root>123<![CDATA[ABD]]>456</root>' 

select @xml.value('/root[1]', 'nvarchar(10)') 

結果：

(No column name) 
123ABD456 

編輯

從表而不是用強制轉換爲XML的變量：

select cast(xml as xml).value('/productDetailsDescription[1]', 'nvarchar(max)') as productDetailsDescription 
from YourTable 

這裏試試：http://data.stackexchange.com/stackoverflow/q/108293/

編輯2

您需要在查詢中指定節點名稱。您還必須決定是否應該在同一列中使用不同的節點，或者應該使用不同的列。下面我向你展示如何做到這一點。

declare @T table(xml nvarchar(max)) 

insert into @T values 
('<productDetailsDescription> 
    <![CDATA[Candidates for this exam are professionals who typically pursue careers as database administrators, database developers, or business intelligence developers. Additionally, they can be people who do not work with Microsoft SQL Server as a part of their primary job functions but who want to show their breadth of technology experience, such as developers, systems administrators, and others. ]]> 
</productDetailsDescription> 
<productImage>/m/967558/40.jpg</productImage> 
<application>Slmnoasp</application>') 

insert into @T values 
('<detailDescription> 
    <![CDATA[Candidates for this exam are professionals who typically pursue careers as database administrators, database developers, or business intelligence developers. Additionally, they can be people who do not work with Microsoft SQL Server as a part of their primary job functions but who want to show their breadth of technology experience, such as developers, systems administrators, and others. ]]> 
</detailDescription> 
<productImage>/m/967558/40.jpg</productImage> 
<application>Slmnoasp</application>') 

-- Get detailDescription in a column of its own 
select 
    cast(xml as xml).value('/productDetailsDescription[1]', 'nvarchar(max)') as productDetailsDescription, 
    cast(xml as xml).value('/detailDescription[1]', 'nvarchar(max)') as detailDescription 
from @T 

-- Get detailDescription in the same column as productDetailsDescription 
select 
    cast(xml as xml).value('/*[local-name()=("productDetailsDescription","detailDescription")][1]', 'nvarchar(max)') as detailDescription 
from @T