schema compare and data compare support within VS2010
There is support for data compare in VS2012 and SSDT. Please send me mail if this still doesn’t meet your scenarios. email@example.com
This thread is old, but are there any current problems? Schema compare and Data Compare are both supported by SSDT in VS.
Stefan Cruysberghs commented
VS Database Edition/DataDude should definitely support SQL Azure so that the deployment/update scripts can be executed in SQL Azure. Or there should be a tool to migrate these scripts.
I just started using the DBPro features of VS2010 and now I find I can;t use it with Azure because the scripts are littered with stuff it doesn't support. I'd really like to see this updated!