title: Fluent migrator. How to add datetime column with default values as current date?
body: <p>How can I alter column in fluent migration with default date time value that is current date time?</p>
  
  <p>So I need smth like this:</p>
  
  <p><code>ALTER TABLE database ADD column DATETIME DEFAULT GETDATE() NOT NULL;</code></p>
  
  <p>only for fluent migration. Thanks.</p>