strange behavior of SQL Server when sum nodes's values in XML

Question

I ask a question about sum node\'s values:

sum some xml nodes values in sql server 2008

Please consider this code:

Declare @xml xml 
set @xml         


        

Answer 1

Try this one -

DECLARE @xml XML 
SELECT @xml='
     1000000000 
     234650 
     0 
      '

SELECT @xml.value('sum(for $r in /Parent[@ID="p"]/Child return xs:int($r))', 'bigint')

UPDATE:

DECLARE @xml XML 
SELECT @xml='
     100000000000000 
     234650 
     0 
      '

SELECT @xml.value('sum(for $r in /Parent[@ID="p"]/Child return xs:decimal($r))', 'bigint')

UPDATE 2:

DECLARE @xml XML 
SELECT @xml='
     100000000000000.6 
     234650 
     0 
      '

SELECT @xml.value('sum(for $r in /Parent[@ID="p"]/Child return xs:decimal($r))', 'decimal(18,2)')