Best SQL Courses in 2026

Pick this for that goal

• Start from zero and practise every day, free: Coddy - you run real queries against live tables in the browser from the first lesson.
• A university-branded certificate: Coursera - SQL for Data Science from the University of California, Davis is the best-known option.
• Becoming a data analyst: DataCamp - SQL sits inside longer career tracks with Python and statistics.
• Backend work and databases in depth: freeCodeCamp - a long, free, project-based curriculum built around PostgreSQL.
• A fast, free taster before you commit: Khan Academy or Codecademy - a few hours is enough to know if SQL suits you.
• You learn best from a lecturer: Udemy - a video bootcamp you buy once and keep.

The best free SQL courses

You do not need to pay to learn SQL well. The free options below cover the same core queries as most paid courses; what you usually pay for is a certificate, extra tracks or a bigger library.

• Coddy - an interactive SQL course where every lesson runs real SELECT, JOIN and GROUP BY queries in your browser, with zero setup and no credit card. It suits beginners who learn by doing; the catch is that it is a focused course, not a full data-analyst programme.
• freeCodeCamp Relational Database - a free, project-based certification that teaches SQL with PostgreSQL alongside Bash and Git, and goes much deeper than a typical intro. It suits people who want to build databases; the catch is that it is long and the setup is more involved. See our freeCodeCamp review.
• Khan Academy Intro to SQL - a short, free course that runs in the browser without an account and covers querying, aggregating and changing data. It suits a first look; the catch is that it stops at the basics and has no certificate.
• Codecademy Learn SQL - a beginner course of about 5 hours that is free to take, with 4 lessons, 5 projects and 4 quizzes. It suits people who want a polished start; the catch is that the certificate needs a paid plan. See our Codecademy review.
• W3Schools SQL tutorial - a free, text-based tutorial with an editor to try each example. It is good as a reference when you forget a keyword; the catch is that it is not a guided course and its certificate is paid.

The best paid SQL courses

Paid courses make sense when you want a structure someone else has built, a recognised name or a longer path into a job. Pay for the thing you actually need, not for SQL itself.

• Coursera - SQL for Data Science - a University of California, Davis course of roughly 15 hours with videos, readings, quizzes and coding assignments, and part of a longer SQL specialization. It suits anyone who wants a university name on the certificate; the catch is that the certificate and graded work need a paid plan. See our Coursera review.
• DataCamp - Introduction to SQL - a short course of about two hours that mixes video with exercises and has an AI tutor, and it opens into full data-analyst tracks. It suits future analysts; the catch is that it runs on a subscription. See our DataCamp review.
• Udemy SQL bootcamps - video courses sold one by one, such as the popular Complete SQL Bootcamp titles. They suit people who like a long, lecture-style walk-through; the catch is that quality varies by instructor and prices swing with sales. See our Udemy review.
• Codecademy with a paid plan - unlocks the certificate and the longer career paths that build on the free SQL course.

SQL courses by goal

Data analysis. Analysts write SELECT, JOIN, GROUP BY and window-function queries all day, then move results into a spreadsheet or Python. Start with a hands-on SQL course, then add a career track such as DataCamp's or Coursera's if you want a structured route. Our data analyst path shows how SQL fits with the rest of the skills.

Backend development. Backend developers need to design tables, pick keys and understand how an application talks to a database. freeCodeCamp's relational database certification is the deepest free option here; pair it with a hands-on course so the queries become automatic.

Interview preparation. Interview questions lean on joins, aggregations, subqueries and window functions. Learn those properly first, keep a SQL cheat sheet beside you, then drill timed problems on a practice site. A beginner course alone will not make you interview-ready.

Certificates and LinkedIn

Certificates differ a lot across this list. Coursera issues paid, university-backed certificates, which carry the most name recognition. DataCamp gives a Statement of Accomplishment that you can add to LinkedIn. Codecademy requires a paid plan for its certificate, and Udemy includes a completion certificate with the course. freeCodeCamp offers a free verified certification, and W3Schools charges for its SQL certificate. Khan Academy does not offer one.

Coddy also issues certificates, and they are 100% free. Each one is publicly verifiable and comes with a one-click "Add to LinkedIn profile" button. The SQL and SQLite certification is earned by writing real queries against real data, section by section.

The honest trade-off: a certificate from a university or a well-known company is recognised faster by recruiters, but no certificate replaces being able to write a correct query. A free, verifiable certificate shows you did the hands-on work and costs nothing.

How we picked

We looked for the courses a knowledgeable person would expect to see, then kept a mix of formats. We judged each on four things: how much of the learning is writing real queries, what it costs to finish, whether the certificate is free or paid, and how well it suits a beginner.

Course details and prices were checked on each provider's own page in November 2026 where those pages could be read. Prices change, so check before you pay. Amounts marked "around" could not be confirmed on the provider's page. We did not take every course ourselves, and this is a guide, not a lab test.

Which SQL course is best for you?

If you are a complete beginner on a zero budget, start with Coddy or Khan Academy, then move to a longer course once you know SQL suits you.

If you want a name for your CV, Coursera's University of California, Davis course is the stronger choice, and it is worth paying for if a recruiter will see it.

If you are heading into data analysis, DataCamp's tracks go further than any single SQL course, including Coddy.

If you want to build databases for apps, freeCodeCamp's relational database certification is deeper and is free.

If you prefer to watch and follow along, a Udemy bootcamp suits you, ideally bought on sale.