SQL SERVER: Check if Node exists in XML or not

I have a stored procedure that receives XML and I need to check if the message information xml contains one Node or NOT. If that node exists then I need to execute that Stored Procedure by different logic and if not it should run with different logic.

I figure it out by using EXISTS.

This is my XML, that I got as parameter.

DECLARE @ExportData  XML

SELECT @ExportData =

'<Data Number="A123">

  <BulkData>

    <EachData Parts="Test1" />

    <EachData Parts="Test2" />

    <EachData Parts="Test3" />

  </BulkData>

</Data>'

Now I need to check if “BulkData” node exists in XML, then I need to write different logic to get the result. 
So, I used this
SELECT @ExportData.exist('(//BulkData)')
This will return “1” if node is exists else return “0”.
That’s it. I can write based on the return result by this statement.
Let me know if it helps you.
Reference : Tejas Shah (http://www.SQLYoga.com)