Text analysis with SQL Number of users with a valid US postal code

226. Number of users with a valid US postal code

Let’s practice our newly learned postal code validation technique! 💪

👉 Calculate the percentage of US users with a valid postal code. Round the final percentage to an integer number, for example, 18. 🇺🇸

💡 Extra points: don’t go back to the previous lesson to get a regex for the US postal code validation. Write it from scratch: you need to match 5 digits 12345 and 9 digits codes 12345-6789.

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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 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. 🚀

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-- Type in your query here. You might want to start by listing all records: SELECT * FROM users
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