SQL for Aspiring Data Scientists

(SQL online course)

From zero to intermediate level with SQL in 7 days!
+bonus: 20 job interview-like SQL exercises

Learn SQL fast and efficiently.

If you are an aspiring data scientist or data analyst and want to learn SQL, this is the course you need.

It will literally get you…

…from here…

sql for aspiring data scientists 1
(First exercise from the course.)

…to here!

sql for aspiring data scientists 2
(One of the last exercises from the course.)

The SQL for Aspiring Data Scientists course is carefully designed to build up your SQL knowledge from complete beginner to intermediate level.

It will take your hand and guide you step-by-step through every fundamental SQL concept that you will need as a junior data scientist during your first years at a job.

And it teaches you all that in 7 days only.

Each day, you will be introduced to the theory you need and given exercises to solve, plus solution videos.

By the end of the 7 days, the tasks will get more and more challenging – as you will continuously get better at writing more complex SQL queries.

Does it sound exciting? Scroll for more details!

Practicing is the best and most efficient way of learning SQL

tomi mester

Hi, I’m Tomi Mester, a practicing data scientist since 2012. I’ve been teaching junior data science courses since 2015.

When I got into my first data science intern position, I didn’t know anything about SQL. So I got a few books and I took an online course, as well.

But I had to realize: none of these books and courses helped me as much as the day-to-day work challenges did. At work, I had to write real SQL queries that I needed to apply to real data projects. And so I practiced and learned new things in small steps, every day. This helped me a lot in building up a confident and practical body of SQL knowledge

When I created this SQL online course, I wanted you to experience the same.

The whole course is inspired by real-life SQL problems. Most exercises in the course require you to write very similar queries to those I had to compose every day in my junior data scientist years.

"But wait… why should I learn SQL at all?"

If you are here, I’m pretty sure that you are aware of the advantages of having a solid knowledge of SQL. But if not, here are a few:
Besides: At most companies, the standard way to store and manage data is SQL. When you use an Excel spreadsheet, that’s most likely an exported version of the data from an SQL table. Learn SQL and you don’t have to deal with “gatekeepers” (developers who are too busy to reply to your email) anymore – you will be able to do it yourself.

Everyone says that machines will take our jobs.

I see it differently. If you can “tell” a machine what to do, it won’t take your job, it’ll help you do it. Learning SQL is the first important step towards working smarter and not harder.

It’s not an accident that online professionals who know SQL – compared to those who don’t – take home a higher salary and have a higher chance of getting hired into a better paying position. SQL is an important skill and good companies know it!

Learning SQL in 7 days? Let's see how it works!

When you enroll in the SQL for Aspiring Data Scientists online course, you will get new learning modules every day for seven days.

Every module features 4 major things:

sql for aspiring data scientists sql cheat sheet - solution exercise 8
screenshot of DAY #2 -- Solution for Exercise #6

+ Awesome bonuses in the vault!

You’ll also get access to a lot of cool bonus materials. You’ll love these, I promise. Just check them out:
sql course bonuses 2

Course Curriculum

When you enroll, you will get access to the first day’s learning materials immediately; after that you will get access to the new modules day by day.

The course starts easy… But it gets more and more challenging by the end of the week — as you get better and better with SQL.

Let’s see the curriculum!

Again: in 7 days, you will get…

…from here…

sql for aspiring data scientists 1
(First exercise from the course.)

…to here!

sql for aspiring data scientists 2
(One of the last exercises from the course.)

When you enroll in this SQL online course, you will get lifetime access to...

Check out what’s in the dataset!
(A video from the course.)

Who is this for?

The SQL for Aspiring Data Scientists course is for you...

This SQL online course is not for you:

Testimonials and reviews. (Previous Students Say...)

Tom SQL course testimonial

“The course is awesome, especially compared to my past attempts at learning SQL (even at a local university which I passed at 95%). But I’ve gained so much more from your style of teaching and will be taking more courses with Data36… Great attitude… never condescending or worse boring.”

Tom, California, United States

Romina SQL course testimonial

“Here’s my feedback about your 7-day SQL course: I loved it a lot!!! For me, it was like tasting 🎂 — and I tried many courses last year (SQL, Python)… but none of those were as tasty as yours. 😄”

Romina, Tulcea, Romania

Steven SQL course testimonial

…Before getting into my questions about […], I wanted to let you know I got the marketing job!

And it was all thanks to SQL! I went from 40k CAD to 60k CAD! Thank you so much for your help during that time!

Steven, Ontario, Canada
Note: Asmeeta currently works as Management Information Analyst

data36 review amy

I completed the 7 day SQL course recently and thought it was excellent and very informative. I have tried a couple of SQL courses previously but this one is by far the best. Firstly, everything is explained clearly in the articles and videos and secondly, you have to write all the code yourself which helps you to learn the syntax properly. I thoroughly enjoyed doing this course – the time just flew by because I was so focussed on trying to solve each problem! Tomi is a great teacher and explains everything so clearly. He is also very responsive to emails which is great if you get stuck with anything.

Amy, London, UK

bence sql course testimonial

“I took the course with zero previous experience with SQL. I am convinced this course is the best choice to get started with data science even for professionals with a non-technical background.

Half-way in the course I have already enrolled for the next 6 weeks Data Science course of Data36. The hands-on approach and the very well structured course materials are a perfect fit to keep you challenged while allowing you to follow your on pace. Loved the course!”

Bence, Budapest, Hungary

Nathen SQL course testimonial

“…So the good news is since the last time we talked I was hired as a junior data scientist at a start-up in SF (mostly thanks to your SQL course)…”

Nathan, California, USA

theo SQL online course testimonial

“This is a must-take practical SQL course mainly designed for beginners who want to level up their skills step by step. Nevertheless, even seasoned coders can benefit from it since tasks become quite challenging as you advance through the course. Tomi’s teaching style is inspiring and easy to follow.”

Theo, Stockholm, Sweden

Yared sql course testimonial

“After taking your 7-day SQL online course, I took an interview and it went surprisingly great! (It was a successful interview.)”

Yared, Texas, USA

tibor viszneki sql course review

“As a Product Manager, SQL will be useful for me in work because many times I’d run my own queries for my own reports (e.g. for new features KPIs).


Thanks for the course, it’s well put together.”

Tibor, Budapest, Hungary

I had over 2000 participants in my data science courses and workshops — from companies like:

audi logo data science képzés
butlers logo data science képzés
iprospect logo data science képzés
lego logo data science képzés
t mobile logo data science képzés
heineken logo data science képzés

and many more…

By the end of the SQL for Aspiring Data Scientists course...


Tomi Mester is a practicing data analyst and researcher since 2012.

He has worked for Prezi, iZettle (acquired by Paypal) and several smaller companies as an analyst/consultant.

He’s the author of the Data36 blog where he writes posts and tutorials on a weekly basis about data science, AB-testing, online research and data coding.

He’s an O’Reilly author and presenter at TEDxYouth, Barcelona E-commerce Summit and Stockholm Analytics Day.

Check out the intro video for more info >>

tomi mester
Mester Tomi


Registration: The SQL for Aspiring Data Scientists is a 7-day online course. When you enroll, you will get new learning modules every day for seven days. After that you’ll have lifetime access to all materials, so you can review everything as many times as you just want. (And if you want to go faster with the modules, you can always reach out to me and I can grant you immediate access to all modules!)

Price: $97 (plus your country’s VAT if you live in the EU)
[NEW] I added a payment plan option, too. You can now enroll for 12 monthly payments of $9 (+VAT in EU).

ps. If you are from Hungary, please email me before you register: tomimester@data36.com.


I worked (and will keep working) really hard to make this course the best available, and I stand behind it 100%.

I understand that enrolling in an online course is not always an easy decision, so I made this decision totally risk-free for you: if you request one, I’ll give you a full refund within the first 30 days.

data science course badge guarantee


This course became the part of the Junior Data Scientist’s First Month bundle. You can get access to it, if you enroll in the Junior Data Scientist’s First Month course, here:

Frequently Asked Questions

What if I don’t know any SQL?

It’s not a problem, unless you don’t want to learn it! 😉 Before every lecture I will link the appropriate SQL tutorial articles you have to go through to solve the given task. (And actually ~50% of the participants are in the same situation as you.)

When does the course start and finish?

The course starts now and never ends! SQL for Aspiring Data Scientists is a completely self-paced online course – you decide when you start and when you finish.

What if I don’t have an SQL environment in place?

Don’t worry, I don’t expect you to have one. I’ll give you free access to another video course of mine where I explain how to set up an SQL environment, step by step.

How much time does the course take?

It might take ~10-15 hours (depending on your previous experience with SQL).

How long do I have access to the course?

How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like – across any and all devices you own.

What if I am unhappy with the course?

I would never want you to be unhappy! If you are unsatisfied with your purchase, contact me in the first 30 days and I will give you a full refund.

What type of SQL do we use in the course?

In the course we will use PostgreSQL. (One of the most popular SQL types.)

Just for the record, you are free to use any SQL environment. All the tasks are doable with almost every combination of server setups and most of the solutions will be the exact same in MySQL, postgreSQL, and MSSQL.

Still, I recommend using the environment (a postgreSQL remote server) that I specify in the course. One reason is: it will be easier for you to follow this course. And another, more important reason is: that’s a very common server setup in real life projects. In the course videos I’ll explain why.

Will I get an invoice?

Yes. Individuals get a receipt in the email. Companies get an invoice. EU-based companies get VAT-invoices. If you need something even more special, just reach out to me (tomi@data36.com) and we will solve your administrative issues!

I want to have this for my whole company!

Happy to hear that! Send me an email to workshop@data36.com and we will sort it out! (I hold 1-day live workshops, too.)

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