Get XML from my SELECT on the SQL Server

Question

I have the following xml

declare @Obligaciones xml 
set @Obligaciones = '<obligaciones>
  <Obligacion id = "51" TipoCancelacionObligacionId = "1" > </Obligacion>
  <Obligacion id = "52" TipoCancelacionObligacionId = "2"> </Obligacion>
  <Obligacion id = "53" TipoCancelacionObligacionId = "2"> </Obligacion>
  </obligaciones>'

I would like to get the following as the result of my query

<obligaciones>
  <Obligacion id = "51" TipoCancelacionObligacionId = "1" > </Obligacion>
</obligaciones>

Can sombody help with the query? I been trying for a while without success.

Thanks in advance.

Answer 1

How about this:

SELECT  
    @Obligaciones.query('/obligaciones/Obligacion[@id="51"]')
FOR XML PATH (''),ROOT('obligaciones')

Gives me the desired output:

<obligaciones>
  <Obligacion id="51" TipoCancelacionObligacionId="1" />
</obligaciones>

The @Obligaciones.query() fetches the XML element with the id=51 attribute, and then I wrap the resulting line of XML into a XML root element called <obligaciones> .

Update: if you're looking to get the first element regardless of its id attribute - use this query instead:

SELECT  
    @Obligaciones.query('/obligaciones/Obligacion[1]')
FOR XML PATH (''),ROOT('obligaciones')