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Learn SQL

Get dangerous with relational databases: query, filter, join, and aggregate data without hiding behind an ORM.

What you'll learn in this SQL course

Learn all the basics of Structured Query Language in this comprehensive SQL course. You'll build out real database tables and practice querying them in flexible ways right in the browser. Not only will you understand how to use SQL, but you'll also learn in what situations you should use it. We will cover architectural design patterns and how to use SQL in a production environment.

Chapter List

1
Introduction
Learn about the basics of SQL and how it came to be
2
Tables
Create new tables and learn how to structure data efficiently
3
Constraints
Learn how to keep data accurate and up to date
4
CRUD
Create, read, update and delete information from a SQL database
5
Basic Queries
Practice additional clauses and features that SQL offers for more flexible querying
6
Structuring
Learn how to order and limit the data returned in large query sets
7
Aggregations
Learn how to run powerful calculations on entire datasets
8
Subqueries
Practice the advanced technique of nesting queries inside one another
9
Normalization
Learn how to normalize a database in order to keep it's data consistent and accurate
10
Joins
Practice joining multiple tables together in order to power real world usecases
11
Performance
Learn how to keep databases running fast and efficient in production

Join 53,353 students in the Learn SQL course

Read reviews of their learning experiences

Great course, with little to no background in Software Engineering, I can now navigate SQL tables and meetings at work with the basics!

(5/5)
Bradley Williams profile image

Bradley Williams

United States

Very fun and refreshing course.

(4/5)
Akib Hasan profile image

Akib Hasan

Chittagong

I don't know much about SQL and it's professional uses, but I feel comfortable enough to handle entry level to intermediate tasks if it's complexity is comparable to that of the rest of the courses on the site when used in a professional capacity

(5/5)
Zethu Gola profile image

Zethu Gola

Gqeberha, South Africa

Had a lot of fun building aside this course!

(4/5)
Philipp Volkmer profile image

Philipp Volkmer

Germany

This one was very fun. If you are familiar with Excel functions, this one will be easy for you.

(5/5)
Sascha Ziebart profile image

Sascha Ziebart

Germany

I did learn SQL a few years ago and it wasn't that clear like this course, I love it, pretty much straight to the point on how to use it and what's the difference between NoSQL and SQL explained properly.

(5/5)
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Guillermo

Portugal

It cleared all core concepts related to SQL

(4/5)
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Shams Farabi

Bangladesh

69

(5/5)
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m p

Finland

This has been super helpful!

(5/5)
Faith Scott profile image

Faith Scott

Edinburgh

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Mediocrity doesn't cut it anymore

The only way to become a great developer is to write a lot of code

Avoid tutorial hell

by writing a ton of code

Stay motivated with

a game-like curriculum

Build portfolio projects

to prove your skills

Delve deeper

into foundational concepts

Learn flexibly online

without interrupting your life

For 1% the price of college

to minimize your financial risk

Frequently asked Questions

Got questions? We've got answers

Yes! It's free to create an account and start learning. You'll get all the immersive and interactive features for free for a few chapters. After that, if you still haven't paid for a membership, you'll be in read-only (content only) mode.