You have mastered the simple SELECT. JOINs aren't so scary any more. And you've been experimenting with the GROUP BY clause (don't worry, I won't tell). You're ready for the next step: SQL 201. It's time to optimize those queries and decode the deadlock graph. Ever heard of an INDEX? You will.
You're done with simple CRUD queries. Now it's time to get more advanced and see SQL for the beautiful language it is.

SELECT devs.*
FROM ConferenceAttendees devs
WHERE SqlExperence = 'Beginner'
AND SqlInterest >= 'Hell Yeah'

This session is aimed at beginner developers or mid-level developers who are new to SQL development topics like deadlocks.