Chapter 13: Appendix
Welcome to SQL Habit Backyard 
This chapter contains many SQL features or rare Data Analysis tricks (here by “rare” I mean used once a year).
Motivation
Even as a native speaker of your language, you still use just a fraction of your vocabulary at work. Stupendous, isn’t it?
Same goes for SQL – in the previous chapters you’ve learned the vocabulary needed to answer pretty much any question with data. There’s still a bunch of SQL features that might simplify your research or inspire a new analysis.
What you’ll learn
This chapter covers a couple of features we haven’t used in the course – FULL OUTER JOIN and set operations. By now I’m sure you’ll get set theory in 10 minutes.
The rest of the chapter contains SQL functions index. I’d recommend go over them once to check if they’re still fresh in your head.
That’s it, the last SQL Habit’s chapter. Have you seen SQL Habit Blog? Anyways, it’s been a wild ride, so glad you stuck till the end! Definitely shoot me a message and say how did you like it! 
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1. FULL OUTER JOINStart
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2. Set theory basics and SQL operations: UNION, INTERSECT, EXCEPTStart
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3. Numeric functionsStart
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4. Date and time functionsStart
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5. String functionsStart
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6. Aggregate functionsStart
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7. Window functionsStart
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8. NULL functionsStart
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9. How to generate number or date sequencesStart
Lessons and exercises
![Anatoli Makarevich, author of SQL Habit]()
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 13 chapters (you’re looking at one atm) that contain 273 bite-sized lessons and exercises. All of them have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 
The 2nd part of the course is called Practice. It’s made of standalone exercises based on multiple datasets – E-commerce, Finance and Meditation app a-la Headspace or Calm. Practice exercises are harder than in the main course. They’ll get you ready for any challenge at work or an interview. 