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MS SQL 2008 - How to convert xml value to row collection from sql sqs table?

I have a value in a column of MS SQL table called "XDATA" like this:

<root><KV><Key>1</Key><Value>A</Value></KV>
    <KV><Key>2</Key><Value>B</Value></KV>
    <KV><Key>3</Key><Value>C</Value></KV></root>

I want to be able to return a string value like this:

KEY, VALUE
1,A
2,B
3,C

So far I have written this:

DECLARE @a1  xml
    declare @x xml;
    set @x = '<root><KV><Key>1</Key><Value>A</Value></KV>
        <KV><Key>2</Key><Value>B</Value></KV>
        <KV><Key>3</Key><Value>C</Value></KV></root>';
   SELECT @a1 = @x.query('(/root/KV/Key/text())')
   select @a1

But I'm going back. Not three rows with two columns. How to get three rows back, each row with two columns:

KEY, VALUE
    1,A
    2,B
    3,C

thank

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1 answer


Use nodes () to trim the XML into strings and use value () to get the value.



select 
  T.N.value('Key[1]', 'int') as [Key],
  T.N.value('Value[1]', 'varchar(10)') as Value
from @x.nodes('/root/KV') as T(N)
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