sum some xml nodes values in sql server 2008

Question

Please consider this XML:

    10 
    20 
    

        

Answer 1

Try this one -

DECLARE @XML XML
SELECT @XML = '

    10 
    20 
    0 


    15 
    20 
    5 
'

SELECT 
      value = SUM(t.value)
    , t.id 
FROM (
    SELECT 
          value = p.value('.', 'INT')
        , id = p.value('./../@ID', 'VARCHAR(50)')
    FROM @XML.nodes('/Parent/Child') t(p)
) t
--WHERE t.id = 'p'
GROUP BY t.id