Advanced Migrations
Learn to use Rails migrations with advanced techniques.
We'll cover the following...
Most Rails developers use the basic facilities of migrations to create and maintain their database schemas. However, every now and then it’s useful to push migrations just a bit further.
Using native SQL
Migrations give us a database-independent way of maintaining your application’s schema. However, if migrations don’t contain the methods we need, we’ll need to drop down to database-specific code. ...