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T-SQL에서 XPath 사용 올바른 목록 항목을 선택하는 ID가 Value 요소에있는 옵션 목록에서 특성 값을 가져 오려고합니다.XPATH 형제로 ID가있는 목록 항목 가져 오기
도움을 주시면 감사하겠습니다.
declare @myTable table (pk int primary key identity(1,1), myXML xml)
insert into @myTable values ('
<Fields>
<Field ID="1111">
<Description>How Now Brown Cow</Description>
<Value>3</Value>
<Options>
<Options>
<Option OptionContent="Select one" OptionID="-1" />
<Option OptionContent="Mars" OptionID="1" />
<Option OptionContent="Pluto" OptionID="2" />
<Option OptionContent="Saturn" OptionID="3" />
</Options>
</Options>
</Field>
<Field ID="2222">
<Description>Foo Bar</Description>
<Value>2</Value>
<Options>
<Options>
<Option OptionContent="Select one" OptionID="-1" />
<Option OptionContent="Coffee" OptionID="1" />
<Option OptionContent="Tea" OptionID="2" />
<Option OptionContent="Water" OptionID="3" />
<Option OptionContent="Juice" OptionID="4" />
<Option OptionContent="Water" OptionID="5" />
</Options>
</Options>
</Field>
</Fields>
')
select
myField.ref.value('@ID', 'smallint') as [ID]
,myField.ref.value('(./Description)[1]', 'nvarchar(10)') as [Description]
,myField.ref.value('(./Value)[1]', 'int') as [Value]
,myField.ref.value('(./Options/Options/Option[@OptionID="-1"]/@OptionContent)[1]', 'nvarchar(10)') as [SelectedDescription]
from @myTable c
cross apply c.myXML.nodes('/Fields/Field') myField(ref)
ID Description Value Actual Expected
------ ----------- ----------- ---------- --------
1111 How Now Br 3 NULL Saturn
2222 Foo Bar 2 NULL Tea