A much requested feature, dbdiagram now support importing from SQL Server!
Import from SQL Server only understand disk-based table syntax of these statements (parts that DBML support):
Create Table ,
Create Index and
Alter Table Add. For other syntax, it will either notify errors or ignore. In case of error, you just need to remove the syntax that cause the errors.
Statements should be separated by either a semicolon or the GO keyword or both in order.