<Root>
<Sub>
<Name>a</Name>
<Value>1</Value>
</Sub>
<Sub>
<Name>b</Name>
<Value>2</Value>
</Sub>
</Root>
I know I can do a
SELECT * FROM table WHERE column.exist('/Root/Sub[Name="a" and Value="1"]') = 1
but how do I filter on both Name/Value pairs? a/1 and b/2?