SQL at work SQL at work recap

256. SQL at work recap

I hope that when you’re reading this you already have database access at work and have written your first query! 🙏

Let’s recap the tips & tricks we’ve seen in this chapter:

Commenting filters in queries

Prepending the 1 = 1 filter (which is always equals to TRUE and doesn’t affect query results) allows us to comment out any filter in the query without worrying about hanging AND operators:

SELECT * FROM users WHERE 1 = 1 AND country = 'us' AND status = 'customer'

Formatting

We’ve talked about 4 aspects of SQL style guide:

  1. Naming. It’s really...
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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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