title: update script when comparing Visual studio database project to schema file
body: <p>I have created a database schema file of a customers database. I want to compare this schema file to my database project i Visual Studio 2010 to be able to script the schema changes that needs to be done to the customer database in connection to the upgrade of our client program. </p>
  
  <p>For filesize matters I want to use this schema file (23MB) rather than getting a full database copy (1352 MB when zipped) from the customer.</p>
  
  <p>I have no problem comparing the Visual Studio project to the schema file (no error messages or warnings) but I find no means to get the resulting update script. The error I am getting when pressing "Refresh update script" is: "you cannot write updates to the target when you compare the specified types of schema models". All export options are disabled.</p>
  
  <p>Of course I understand that I can't write updates to the database schema but that is not my intention - I want to run the update script on the database at our customers server.</p>
  
  <p>Is there any way I can get out the update script?</p>
  
  <p>Thanks!</p>