Let’s continue our discussion about formatting queries. 
Lower case vs upper case
Throughout the whole course you saw the queries formatted using the upper case:
SELECT id AS user_id, SPLIT_PART(email, '@', 2) AS email_domain FROM users WHERE country = 'us' AND status = 'customer'
Of course, it’s not the only way of doing this. Here’s the same query using the lower case:
select id as user_id, split_part(email, '@', 2) as email_domain from users where country = 'us' and status = 'customer'
Crazy, right? It looks, feels and reads like a...
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About SQL Habit
Hi, it’s Anatoli, the author of SQL Habit. 
SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst
and solve real-life challenges from Business, Marketing, and Product Management.
SQL Habit course is made of bite-sized lessons (you’re looking at one atm) and exercises. They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 