The Best Resources to Learn SQL for Free in 2026

SQL is one of the few skills that has stayed on nearly every data job description for the last two decades, and the good news is that the fundamentals are fully learnable at no cost. The harder part is that the free options are scattered across dozens of sites, and the quality varies wildly. Some sites throw you into window functions on day one, others never get past a basic SELECT.

This guide is for anyone who wants to learn SQL without paying for it, whether you have never written a query or you already know the basics and want interview-style practice. I have grouped the resources by what they are actually good at, so you can skip the beginner material if you do not need it.

I chose these resources on three factors: how much you can learn without paying, how well they build on each other, and whether the community keeps recommending them in 2026 roundups. A few are fully free forever. A few are freemium, and I will tell you exactly where the free part stops.

Top Free SQL Resources: TL;DR

Best Free Resources for Learning SQL

Here are the resources I would actually recommend, ordered roughly from foundational learning to advanced practice.

1. DataCamp SQL tutorials and blogs

We have a wealth of free written SQL content, which is the perfect companion as you learn SQL.

We publish a large library of free SQL tutorials that cover single topics in depth, such as joins, subqueries, and common table expressions. Unlike a linear course, these are reference-style pages you can jump into when you hit a specific concept you need to learn. Our SQL basics cheat sheet is a good example of the kind of quick reference that pairs well with hands-on practice, which you can do for free using DataLab.

The tutorials and blogs are free to read with no account required, which makes them easy to link to from your own notes. The main limitation is that they are not a structured path on their own. That being said, our SQL roadmap gives you step-by-step guidance on how to progress, as well as links to resources that can help. 

• Level: Beginner to advanced
• Format: Written tutorials and blogs, single-topic
• Best for: A free written reference to sit alongside a course

Read our guide to learning SQL to see how the pieces fit together.

2. DataCamp free intro course content (course, freemium)

This is the best free starting point if you want guided, browser-based practice with instant feedback on every query you write.

The first chapter of many of our SQL courses is free, and our Introduction to SQL course lets you write real queries in the browser without installing a database, guided by our AI tutor. Full access to the rest of the catalog requires a paid membership, but this is a great way to test the waters if you're just starting out. 

What you get for free is the same in-browser code editor used across the paid courses, so you are not stuck watching videos. You type SQL, run it, and get graded feedback immediately. Of course, you will run into the paywall once you finish the free chapters, so this works best as a first taste rather than an end-to-end path.

• Level: Beginner
• Format: Interactive course, first chapter free
• Best for: Guided first steps with instant feedback

Start the course.

3. Mode SQL Tutorial (tutorial)

Mode's SQL tutorial is a good free option if you are learning SQL specifically for analytics work.

It is a free, browser-based tutorial that goes further than some beginner sites, covering subqueries and window functions that analysts actually use day to day. The framing throughout is analytical, so the examples lean toward the kinds of questions a data analyst gets asked rather than abstract syntax drills. That makes it a natural step up once you have the basics from DataCamp.

The honest limitation is that Mode is a tutorial, not a full end-to-end course, so it does not track your progress or issue a certificate. Treat it as the intermediate reading you do after a fundamentals course, not your only source.

• Level: Intermediate
• Format: Free browser tutorial
• Best for: Analysts learning window functions and subqueries

Open the Mode SQL Tutorial in your browser to work through it.

4. SQLZoo (practice site)

SQLZoo is one of the oldest free SQL learning sites, and is good for practice across multiple SQL dialects.

It is free, runs in the browser, and lets you work through exercises in several dialects, which is unusual among the free options here. That dialect coverage is genuinely useful if you know you will be working in something other than standard SQL, much like DataCamp's breadth of tutorials. The exercises are exercise-first, so you learn by doing rather than reading long explanations.

The catch is that the difficulty ramps quickly, which makes SQLZoo less suitable as a complete beginner's first site. 

• Level: Intermediate
• Format: Free practice site, multiple dialects
• Best for: Exercises across different SQL dialects

Go to the SQLZoo site and pick a tutorial track.

5. Kaggle Learn SQL (course)

Kaggle Learn is one of the free resources I would point to if you want to practice against real datasets and earn a certificate at the end.

The SQL micro-courses run in notebooks and query genuine datasets, so you are writing SQL that returns real results rather than toy tables. Kaggle also awards a completion certificate, which sets it apart from Khan Academy and Mode.

You do need a free Kaggle account to run the notebooks, and the courses assume you are comfortable in a notebook environment. For anyone building a portfolio, the datasets double as material you can keep working with afterward, similar to the way DataLab works at DataCamp.

• Level: Beginner to intermediate
• Format: Free micro-courses with a certificate
• Best for: Practice on real datasets plus a certificate

Sign up for a free Kaggle account and start the SQL track on Kaggle Learn.

6. Oracle Live SQL (sandbox)

Oracle Live SQL is the free vendor-backed sandbox to reach for when you specifically need to test Oracle SQL.

It is a free, browser-based Oracle environment for running and testing queries without setting up a local database. Because it is Oracle's own environment, the behavior matches production Oracle more closely than a generic practice site would. That makes it the natural place to try Oracle-specific syntax you have read about elsewhere.

This is a sandbox, not a course, so there is no structured curriculum to follow. Use it to experiment and verify queries, not to learn SQL from scratch.

• Level: Intermediate
• Format: Free browser sandbox
• Best for: Testing Oracle-specific SQL

Sign in to Oracle Live SQL with a free Oracle account to run queries.

7. freeCodeCamp (course)

freeCodeCamp earns its place as a fully free, structured path through SQL fundamentals for people who like a clear curriculum.

It appears in multiple free-SQL roundups as a dependable option for the basics, and everything is free with no paywall to hit. The material is organized as a course rather than scattered exercises, which suits learners who want to follow one track from start to finish.

However, the content is a bit shallow, covering only the fundamentals rather than advanced analytics, so pair it with DataCamp tutorials and practice once you finish. Its strength is structure, not depth.

• Level: Beginner
• Format: Free structured course
• Best for: A free path through some of the fundamentals

Find the SQL curriculum on the freeCodeCamp site.

8. Khan Academy (course)

Khan Academy is quite a good entry point for someone who has never touched a database.

The intro SQL course is fully free with no certificate requirement, and it runs in an embedded editor so there is nothing to install. It teaches SQL through small, self-contained challenges, which suits people who find a full course intimidating. Roundups in 2026 keep placing it in the top tier of free options precisely because of how low the barrier to entry is.

The trade-off is that Khan Academy does not usually issue a certificate, so if you need something for a resume you will want to pair it with Kaggle Learn later. It also stays fairly introductory, so you will outgrow it quickly.

• Level: Beginner
• Format: Free course, browser-based
• Best for: Absolute beginners who want zero pressure

Search for the SQL course on the Khan Academy site to get started.

9. SQLBolt (interactive lessons)

SQLBolt is a decent pick for short, interactive lessons where every concept comes with an exercise attached.

It is fully free, needs no account, and runs entirely in the browser. The lessons are bite-sized, so you can finish the SELECT and WHERE material in a single sitting and immediately test it. 

However, because the lessons are short, SQLBolt is better as a fast primer than a deep course. It covers the core query syntax well, but you will not find the same depth on advanced topics that Mode or a university audit course offers.

• Level: Beginner
• Format: Free interactive lessons, no account
• Best for: A fast primer with instant exercises

Head to the SQLBolt site and start with the first lesson.

10. Coursera and edX audit paths (course, audit)

Auditing Coursera and edX courses is the free route to university-level SQL and database content when you want depth over speed.

Both platforms let you audit many SQL and database courses for free, including university offerings such as Stanford's database material on edX. Auditing gives you access to the lectures and readings without paying. The material tends to go deeper into database theory than the interactive practice sites do.

The clear limitation is that graded assessments and certificates are not included in the free audit, so you pay if you want the credential. If a certificate matters to you, DataCamp offers a variety of SQL certifications. 

• Level: Intermediate
• Format: Free audit, paid certificate
• Best for: University-level depth without paying for a certificate

Search for a SQL or database course on either platform and select the audit option.

11. LeetCode, HackerRank, and DataLemur (practice sites)

These three are the interview-preparation sites for once your fundamentals are solid.

LeetCode Database, HackerRank SQL, and DataLemur all focus on harder, interview-style query problems rather than teaching from scratch. They are practice grounds, not instruction, so you bring your existing knowledge and stress-test it against real interview questions. Community threads consistently pair a fundamentals course, such as DataCamp's SQL fundamentals, with one of these for job-interview prep.

The common advice is to combine them with a proper course rather than start here. If you jump straight to LeetCode Database with no foundation, the difficulty will bury you.

• Level: Intermediate to advanced
• Format: Free practice sites (some paid tiers)
• Best for: Interview-style query practice

Create free accounts on the ones that match your target role and start with the easier problems.

Suggested Learning Path

Here is how I would sequence these free resources if you were starting from zero and aiming for job-ready SQL.

Stage 1: Get comfortable with the basics

Start with either our free intro course content. Follow it with our tutorials, or a site like SQLBolt to drill the core SELECT, WHERE, and JOIN syntax in short bursts. Keep our SQL cheat sheet open as you go. 

Stage 2: Move into real analytics

Once basic queries feel natural, work through the SQL tutorials for window functions and subqueries. Then do a micro-course to practice on real datasets. If you want to test yourself across dialects, add SQLZoo here, or more DataCamp tutorials. If you know you will be working in Oracle, spend time in Oracle Live SQL confirming the syntax behaves as expected.

Stage 3: Apply and prepare for interviews

Build something end-to-end with one of our projects, so you have portfolio material. Then, grind SQL interview-style problems. If you want deeper database theory before interviews, audit a university course.

How to Choose the Right Resource

If you are unsure where to start, match your situation to one of these.

• Complete beginner who finds courses intimidating: Start with DataCamp blogs and tutorials, it's the lowest-pressure free option, and it needs no installation.
• Beginner who wants graded feedback: Start with DataCamp's free intro course content. The in-browser editor grades every query as you write it and lets you see whether it's worth a subscription. 
• Learner working in a specific dialect: Something like Oracle Live SQL is the sandbox for Oracle, specifically.
• Someone preparing for job interviews: Combine a fundamentals course with LeetCode Database, HackerRank SQL, or DataLemur.

One thing worth noting: The university MOOCs are freemium or audit-based, not fully free. You can learn real SQL on the free tiers, but the certificate for our courses and for Coursera and edX sits behind a payment. 

Final Thoughts

If you are starting from scratch, begin with DataCamp blogs and tutorials, and the free intro course content, because both get you writing real queries in a browser within minutes.

If you want a broader foundation in SQL before going deep, I would recommend starting with our SQL Fundamentals skill track.