In the previous lessons we’ve learned how to extract the domain from user’s email. Imagine we’d cold call/mail to each company.
Let’s count how many unique email domains do we have?
60. Count unique email domains
About SQL Habit
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 and exercises (you’re looking at one atm). They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 
“well worth the money”
Fluent in SQL in a month
Master Data Analysis with SQL with real life examples from Product Management, Marketing, Finance and more.
