title: TALEND guess schema
body: <p>I have a problem to retrieve the schema of a tMSSQLinput component due to the fact that my selection from source DB contain a big XML column field that cause the crash of the guess schema operation. This is my simple query:
  "SELECT * FROM myTable"</p>
  
  <p>I wonder if is possible to retrieve the schema using the top clause TOP(1)
  in order to just guess the schema, and than 
  modify my query in my original format without the TOP clause.</p>
  
  <p>The component will be able to retrieve all the data and not just the TOP(1) in the normal execution?</p>
  
  <p>Thanks!</p>