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Learn SQL

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

What will you learn?

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 49,309 students in the Learn SQL course

Read reviews of their learning experiences

I've remembered a lot of stuff and I've learned a lot of stuff, good course!

(5/5)
Nikita Nikolayev profile image

Nikita Nikolayev

Kazakhstan

Awesome course, loved the little comic joke at the end

(5/5)
Tradix  profile image

Tradix

Nairobi, Kenya

This is a good intro to SQL!

(5/5)
Александр Щербаков profile image

Александр Щербаков

Serbia

Squeeling (noun, tech definition): The high-pitched noise a developer makes when they successfully run a 500-line SQL script on the production database, and it actually works instead of destroying the company's entire infrastructure. -Ai

(5/5)
Chris C profile image

Chris C

Japan

There many ways to learn SQL , but this is the only way

(5/5)
Urbanus kioko profile image

Urbanus kioko

Kenya

thought it would be easy ,but it came at a cost silly mistakes was my bottle neck.

(5/5)
Bitrus Seth profile image

Bitrus Seth

Nigeria

tackled a lot of fundamentals

(5/5)
ztest95  profile image

ztest95

Philippines

Descriptions are mostly spot on and simple to understand. I was barely tripped up.

(4/5)
Aaron Everett profile image

Aaron Everett

United States

It was fun to learn SQl

(5/5)
SK MOSTAFA MASUD profile image

SK MOSTAFA MASUD

Chittagong

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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.