sql server FOR XML xpath mode: how to generate nested XML id 1 and 2

Question

I am a xml string as below. I want to use sql server for xml xpath to generate this xml string. I have trouble to get id="IP1" and id="IP2". Would you please help me with it? Thank you very much.

    <root>
    <InsuredOrPrincipal id="IP1">
    <GeneralPartyInfo>
    <NameInfo>
    <PersonName>
    <Surname>A </Surname>
    <GivenName>B</GivenName>
    </PersonName>

    </NameInfo>

    </GeneralPartyInfo>

    </InsuredOrPrincipal>


    <InsuredOrPrincipal id="IP2">
    <GeneralPartyInfo>
    <NameInfo>
    <PersonName>
    <Surname>A </Surname>
    <GivenName>B</GivenName>
    </PersonName>

    </NameInfo>

    </GeneralPartyInfo>

    </InsuredOrPrincipal>
    </root>

Answer 1

This should do what you need. You can run the code in SSMS to see it in action.

-- create table variable
DECLARE @table TABLE ( id VARCHAR(10), Surname VARCHAR(50), GivenName VARCHAR(50) );

-- insert test data
INSERT INTO @table ( 
    id, Surname, GivenName 
)
VALUES
( 'IP1', 'A1', 'B1' )
, ( 'IP2', 'A2', 'B2' );

-- return xml results from test data as per required schema
SELECT
    id AS 'InsuredAsPrincipal/@id'
    , Surname AS 'InsuredAsPrincipal/GeneralPartyInfo/NameInfo/PersonName/Surname'
    , GivenName AS 'InsuredAsPrincipal/GeneralPartyInfo/NameInfo/PersonName/GivenName'
FROM @table
FOR XML PATH ( '' ), ROOT( 'root' );

The resulting XML returned is:

<root>
  <InsuredAsPrincipal id="IP1">
    <GeneralPartyInfo>
      <NameInfo>
        <PersonName>
          <Surname>A1</Surname>
          <GivenName>B1</GivenName>
        </PersonName>
      </NameInfo>
    </GeneralPartyInfo>
  </InsuredAsPrincipal>
  <InsuredAsPrincipal id="IP2">
    <GeneralPartyInfo>
      <NameInfo>
        <PersonName>
          <Surname>A2</Surname>
          <GivenName>B2</GivenName>
        </PersonName>
      </NameInfo>
    </GeneralPartyInfo>
  </InsuredAsPrincipal>
</root>

I believe this is what you are looking to do. The real "magic" here is in aliasing your column data.