OPENXML to extract data from XML and add to the table - sql

Question

I have a XML file from where I want to get the data and place it into the SQL table. My problem is the path is different in the same XML file.
For an example,
one path = 'root/DescriptorRecord/DescriptorName'
second path = 'root/DescriptorRecord/ConceptList/Concept/TermList/Term'
I have no clue that how to get a value from two different path in a same XML.
Following is my XML :
<root>
<DescriptorRecord DescriptorClass = "1">
<DescriptorName>
<String>abc</String>
</DescriptorName>
<ConceptList>
<Concept PreferredConceptYN="Y">
<TermList>
<Term ConceptPreferredTermYN="Y" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="Y">
<String>abc</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="N" RecordPreferredTermYN="N">
<String>pqr</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="N">
<String>xyz</String>
</Term>
</TermList>
</Concept>
</ConceptList>
</DescriptorRecord>
<DescriptorRecord DescriptorClass = "1">
<DescriptorName>
<String>Numerics</String>
</DescriptorName>
<ConceptList>
<Concept PreferredConceptYN="Y">
<TermList>
<Term ConceptPreferredTermYN="Y" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="Y">
<String>123</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="N" RecordPreferredTermYN="N">
<String>456</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="N">
<String>789</String>
</Term>
</TermList>
</Concept>
</ConceptList>
</DescriptorRecord>
</root>
My SQL query :
DECLARE #XML AS XML, #hDoc AS INT, #SQL NVARCHAR (MAX)
SELECT #XML = XMLData FROM XMLwithOpenXML
EXEC sp_xml_preparedocument #hDoc OUTPUT, #XML
SELECT Descriptor, Terms
FROM OPENXML(#hDoc, 'root/DescriptorRecord/DescriptorName')
WITH
(
Descriptor [varchar](100) 'String',
Terms [varchar](100) 'String'
)
SELECT Terms
FROM OPENXML(#hDoc, 'root/DescriptorRecord/ConceptList/Concept/TermList/Term')
WITH
(
Descriptor [varchar](100) 'String'
Terms [varchar](100) 'String'
)
EXEC sp_xml_removedocument #hDoc
GO
Result :
Expected Result

Answer 1

So, setting up your sample in a variable:
DECLARE #X XML = N'<root>
<DescriptorRecord DescriptorClass = "1">
<DescriptorName>
<String>abc</String>
</DescriptorName>
<ConceptList>
<Concept PreferredConceptYN="Y">
<TermList>
<Term ConceptPreferredTermYN="Y" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="Y">
<String>abc</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="N" RecordPreferredTermYN="N">
<String>pqr</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="N">
<String>xyz</String>
</Term>
</TermList>
</Concept>
</ConceptList>
</DescriptorRecord>
<DescriptorRecord DescriptorClass = "1">
<DescriptorName>
<String>Numerics</String>
</DescriptorName>
<ConceptList>
<Concept PreferredConceptYN="Y">
<TermList>
<Term ConceptPreferredTermYN="Y" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="Y">
<String>123</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="N" RecordPreferredTermYN="N">
<String>456</String>
</Term>
<Term ConceptPreferredTermYN="N" IsPermutedTermYN="N" LexicalTag="NON" PrintFlagYN="Y" RecordPreferredTermYN="N">
<String>789</String>
</Term>
</TermList>
</Concept>
</ConceptList>
</DescriptorRecord>
</root>'
You'll want to select the descriptors first in an inner query, and return the results to an outer query, where you can use the descriptor column as a xpath criteria in the second .nodes() call. Like so:
SELECT Descriptor.Data.value('./DescriptorName[1]/String[1]','nvarchar(200)') AS Descriptor, Terms.Data.value('.','nvarchar(200)') AS Terms
FROM #x.nodes('root/DescriptorRecord') Descriptor(Data)
cross apply Descriptor.Data.nodes('./ConceptList/Concept/TermList/Term/String') Terms(Data)
EDIT: An attempt to make it less computationally expensive.