Running marketing Counting signups from English speaking countries

48. Counting signups from English speaking countries

In the previous lesson we learned about OR operator and operator precedence and how to control it with parentheses:

SELECT COUNT(*) FROM users WHERE (country = 'ca' OR country = 'gb' OR country = 'au' OR country = 'us') AND signup_date BETWEEN '2018-02-01' AND '2018-02-07' 

How do you like it? 🤔 It often helps to ask the question “Can we do better?”. We clearly have room for improvement, as this query grew really big.

The OR operator did a great job and if you need to apply filters for different columns it’s the only way to go. Since we’re...

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Anatoli Makarevich, author of 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 (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. 🚀

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-- Type your query here, for example this one -- lists all records from users table: SELECT * FROM users
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