我需要从SQL Server 2008中的XML中获取一些信息,但我甚至无法从中获取基本属性。我试过的所有样品都失败了。表名为Item
,xml列名为Data
。
简化的xml如下所示:
<AnchoredXml xmlns="urn:schema:Microsoft.Rtc.Management.ScopeFramework.2008" SchemaWriteVersion="2">
<Key ScopeClass="Global">
<SchemaId Namespace="urn:schema:Microsoft.Rtc.Management.Deploy.Topology.2008" ElementName="Topology" />
<AuthorityId Class="Host" InstanceId="00000000-0000-0000-0000-000000000000" />
</Key>
<Dictionary Count="1">
<Item>
<Key />
<Value Signature="a3502dd0-8c16-4023-9eea-30ea1c7a3a2b">
<Topology xmlns="urn:schema:Microsoft.Rtc.Management.Deploy.Topology.2008">
<Services>
<Service RoleVersion="1" ServiceVersion="6" Type="Microsoft.Rtc.Management.Deploy.Internal.ServiceRoles.FileStoreService">
<ServiceId SiteId="1" RoleName="FileStore" Instance="1" />
<DependsOn />
<InstalledOn>
<ClusterId SiteId="1" Number="1" />
</InstalledOn>
<Ports xmlns="urn:schema:Microsoft.Rtc.Management.Deploy.ServiceRoles.2008" />
<FileStoreService xmlns="urn:schema:Microsoft.Rtc.Management.Deploy.ServiceRoles.2008" ShareName="lyncShare" />
</Service>
</Services>
</Topology>
</Value>
</Item>
</Dictionary>
</AnchoredXml>
我需要读取AnchoredXml / Key / SchemaId / @ NameSpace中的信息以选择正确的xml(还有更多行)。上面的示例xml是正确的。之后我需要找到合适的服务
Type="Microsoft.Rtc.Management.Deploy.Internal.ServiceRoles.FileStoreService"
我需要的FileStoreService / @ ShareName在哪里。
我尝试打开Namespace attributte作为开始,但没有示例代码正常工作。 几次尝试:
SELECT c.p.value('(@Namespace)[1]', 'varchar(50)') as 'Nmspace'
FROM Item
CROSS APPLY Data.nodes('/AnchoredXml/Key/SchemaId') c(p)
返回空结果集
SELECT Data.value('(/AnchoredXml/Key/SchemaId/@Namespace)[1]', 'varchar(50)')
FROM Item
为所有行返回NULL
SELECT
It.Data.exist('/AnchoredXml/Key/SchemaId[@Namespace="Microsoft.Rtc.Management.Deploy.Topology.2008"]')
FROM [xds].[dbo].[Item] AS It
为所有行返回0,也没有引号(“”)
至少获得属性测试的工作示例代码可能就足够了,我会弄清楚剩下的。 你能帮我查一下我的查询中的错误,或者找出其他一些问题吗? 感谢
答案 0 :(得分:1)
您忽略了XML文档中的所有 XML命名空间!你需要注意那些并尊重他们!
有以下XML命名空间:
<AnchoredXml>
urn:schema:Microsoft.Rtc.Management.ScopeFramework.2008
)<Topology>
urn:schema:Microsoft.Rtc.Management.Deploy.Topology.2008
)<FileStoreService>
urn:schema:Microsoft.Rtc.Management.Deploy.ServiceRoles.2008
)试试这个:
-- respect the XML namespaces!!
;WITH XMLNAMESPACES(DEFAULT 'urn:schema:Microsoft.Rtc.Management.ScopeFramework.2008',
'urn:schema:Microsoft.Rtc.Management.Deploy.Topology.2008' AS t,
'urn:schema:Microsoft.Rtc.Management.Deploy.ServiceRoles.2008' AS fss)
SELECT
ShareName = Data.value('(/AnchoredXml/Dictionary/Item/Value/t:Topology/t:Services/t:Service/fss:FileStoreService/@ShareName)[1]', 'varchar(50)')
FROM
dbo.Item
就我而言,这会返回:
ShareName
-----------
lyncShare