Native SQL with Doctrine2 Fixtures in Symfony2

Sometimes the use of native SQL queries is desired over using Doctrine2 when programming fixtures in Symfony2, whether this be for performance reasons, etc. While it's recommended to use Doctrine2 in most cases, here's how to execute a SQL query:

$manager->exec($yoursql);

Note that this assumes that $manager is an ObjectManager type (hint: it should already be if you're creating your own fixture that extends Doctrine\Common\DataFixtures\AbstractFixture).

Doctrine fixtures is still changing, so I'll note that this works as of April 14, 2012 but it might not if they change their public interface in the future.