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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 51,721 students in the Learn SQL course

Read reviews of their learning experiences

I really enjoyed the course and the interactive problems really helped me solidify my learning.

(5/5)
Ashmin Bhujel profile image

Ashmin Bhujel

Nepal

Amazing stuff <3

(5/5)
Omota Paul-Daniel profile image

Omota Paul-Daniel

Alges, Portugal

fairly good course, specially for beginners in SQL

(5/5)
Kashan  Intekhab  profile image

Kashan Intekhab

India

I highly recommend! For someone that had no prior SQL experience, I really enjoyed the structure / gamification of this course!

(5/5)
Alexx Hooks profile image

Alexx Hooks

United States

Overall, the course was good and well suited for beginners. However, if you already have some exposure to databases, you may find the content relatively easy. It would be even better if the course included a chapter explaining SQLite's internals.

(5/5)
Himanshu Soni profile image

Himanshu Soni

Germany

I work with enterprise databases every day at my job. This course helped me read stored procedures and write better queries to make data-driven decisions!

(5/5)
Jesse Newton profile image

Jesse Newton

Athens, GA, USA

Excellent!

(5/5)
Sukrit Jetly profile image

Sukrit Jetly

India

I enjoyed every bit of it

(5/5)
Myriam  profile image

Myriam

Morocco

I prefer this sql than my school

(5/5)
Frag  profile image

Frag

Philippines

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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.