[英]Reading xml Structure in sql server 2012
樣本XML結構
<?xml version="1.0" encoding="UTF-8"?>
<XmlSerializableHashtable xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Entries>
<Entry>
<key xsi:type="xsd:string">col1</key>
<value xsi:type="xsd:string">500</value>
</Entry>
<Entry>
<key xsi:type="xsd:string">col2</key>
<value xsi:type="xsd:string">0/60,1/1000</value>
</Entry>
<Entry>
<key xsi:type="xsd:string">col3</key>
<value xsi:type="xsd:string">localhost</value>
</Entry>
</Entries>
</XmlSerializableHashtable>
不,我要在鍵為col3的地方獲取價值
我正在嘗試使用Xquery
Declare @x xml;
Set @x = (Select valuefrom sometable)
Select @x.query('/Entries/Entry/')
該查詢將有所幫助。
DECLARE @xmlData AS XML
DECLARE @sRawData AS VARCHAR(2000)
SET @sRawData = '<?xml version="1.0" encoding="UTF-8"?>
<XmlSerializableHashtable xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Entries>
<Entry>
<key xsi:type="xsd:string">col1</key>
<value xsi:type="xsd:string">500</value>
</Entry>
<Entry>
<key xsi:type="xsd:string">col2</key>
<value xsi:type="xsd:string">0/60,1/1000</value>
</Entry>
<Entry>
<key xsi:type="xsd:string">col3</key>
<value xsi:type="xsd:string">localhost</value>
</Entry>
</Entries>
</XmlSerializableHashtable>'
SET @xmlData = CAST(@sRawData AS XML)
SELECT MainDataCenter.Col.value('(key)[1]','varchar(max)') AS [key]
,MainDataCenter.Col.value('(value)[1]','varchar(max)') AS Value
FROM @xmlData.nodes('/XmlSerializableHashtable/Entries/Entry') AS MainDataCenter(Col)
WHERE MainDataCenter.Col.value('(key)[1]','varchar(max)') = 'col3'
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