It will not matter what version of visual studio he has as the generator uses its own SQL it fires at the database, and does not use any visual studio properties apart from being able to scan for a connection string and add/remove files to the project for the generated code.
Try backing up your database, and restoring it on the one that generates different code to double check.
Or alternatively, just turn off defaults altogether by altering the SQL to be
Try backing up your database, and restoring it on the one that generates different code to double check.
Or alternatively, just turn off defaults altogether by altering the SQL to be
'' AS [Default]