About Our Courses

Agnieszka Kozubek-Krycuń

Why Take the “SQL Basics” Course at LearnSQL.com

LearnSQL.com’s interactive SQL Basics course teaches the foundations of SQL. Discover why we built this online course, our philosophy behind it, and what it contains! Learning SQL can feel like unlocking a new skill set you didn’t even know you needed. At first, it might seem like just another technical tool, but as you start using it, you'll notice how much smoother your workflow becomes. Suddenly, tasks like pulling data from multiple sources or answering complex questions about trends won’t feel as overwhelming.

LearnSQL.com Team

Fall 2024 Track of the Season: SQL from A to Z

During Fall 2024, our main SQL track, SQL from A to Z, will be in the spotlight. In this article, we answer the most frequently asked questions about this track. At LearnSQL.com, our SQL courses are organized into tracks. A track is a sequence of courses designed to help you achieve a specific learning goal. The courses in the track are in a recommended order that progresses from the easiest to the most challenging.

LearnSQL.com Team

Course of the Month: SQL JOINs

If you want to really learn SQL, you can’t skip SQL JOINs. They are some of the most fundamental and commonly used features of the SQL language. That’s why SQL JOINs is our February SQL Course of the Month. What makes SQL JOINs so important? I asked Agnieszka Kozubek-Krycuń, Vertabelo's Chief Content Officer, about it. Here's what she said. Is it true that SQL JOINs are one of the foundations of SQL?

Jakub Romanowski

Course of the Month: Creating Basic SQL Reports

Do you want to create good SQL reports from scratch? Are you looking for a course that will help you spread your analytical wings? What if I told you that throughout April 2021, you could access one of the best SQL Reports courses for FREE? Here it is: Creating Basic SQL Reports. What's the catch? There is none. LearnSQL.com provides one of their courses for free from time to time.

LearnSQL.com Team

Course of the Month: Window Functions

Spring has come. It is nicer outside. It's a great time to learn something new. Which course should you choose? In April, it's worth it to bet on SQL window functions. What are they, what are they used for, and why are they worth knowing? I asked Agnieszka Kozubek-Krycuń, Chief Content Officer at Vertabelo, these questions. She has a PhD in mathematics and over 10 years’ experience teaching mathematics and computer science at the University of Warsaw.

LearnSQL.com Team

Course of the Month: Recursive Queries

Recursive Queries is one of SQL’s more advanced features. You could say they divide SQL users into beginners and experts. But how do you learn recursive queries? And why do you need them, anyway? Agnieszka Kozubek-Krycuń, Chief Content Officer at Vertabelo, is here to help. In this article, she answers your questions about our August SQL Course of the Month: Recursive Queries. Recursive queries … that sounds very serious.

Jakub Romanowski

Free SQL Courses to Elevate Your Skills

In this article, I'll explain why LearnSQL.com offers free SQL courses. I’ll also introduce you to some of the courses we’ve offered for free over the years. If you're eager to enhance your SQL skills without breaking the bank, you've come to the right place. You're here because you understand the significance of learning SQL. But are you tired of those lengthy YouTube tutorials? How about diving into an online SQL course?

Jakub Romanowski

Black Week Sale: Master SQL With up to 75% Off

Black Week has arrived and LearnSQL.com is offering unbeatable discounts for those looking to learn SQL and enhance their data skills. With up to 75% off, now is the ideal time to master SQL without overspending. Now is the perfect time to invest in your professional growth: get 75% off our All Forever Package. This isn't just a discount—it's your chance to boost your data analysis skills without overspending. Whether you're a complete beginner or have some SQL experience, our Black Week offer provides high-quality, flexible learning options at unbeatable prices.

Jakub Romanowski

Course of the Month: Customer Behavior in PostgreSQL

Ever wondered how top businesses understand their customers so well? The secret lies in data analysis, and we're offering you the key – for free – in our Customer Behavior Analysis in PostgreSQL course! Are you familiar with the basics of PostgreSQL and eager to delve deeper into customer behavior analysis? Our November 2024 Course of the Month, Customer Behavior Analysis in PostgreSQL, has you covered! And the best part?

Jakub Romanowski

Free Course of the Month: Blog & Traffic Data

Why practice SQL with real-life scenarios? We'll explain in this article – and we’ll show how you can do it for free during October 2024 with this LearnSQL.com course! SQL is the backbone of many data-driven applications and businesses. It's a powerful language that allows you to interact with databases, retrieve data, and make insightful decisions. If you're looking to improve your SQL skills, our Basic SQL Practice: Blog & Traffic Data course is the perfect opportunity.

LearnSQL.com Team

Course of the Month: SQL Practice Set in PostgreSQL

Do you know the basics of PostgreSQL but still need some practice? Look no further! Here is a great interactive course, SQL Practice Set in PostgreSQL. Throughout the month of September, you have access to it for FREE! We at LearnSQL.com believe that to learn a new skill, you need basic theoretical knowledge and, above all, a lot of practice. It's the same with writing PostgreSQL queries – you need a lot of PostgreSQL practice.

Jakub Romanowski

Course of the Month: GROUP BY Extensions in PostgreSQL

Do you work with data? Want to be able to create better and more sophisticated SQL reports? Then check out our interactive GROUP BY Extensions in PostgreSQL course. In August 2024, you can complete this online PostgreSQL course for FREE! How can you get this free SQL course in August 2024? Create a free LearnSQL.com account or log in if you already have one. Start the course.

Jakub Romanowski

New Course! Have Fun With Self-Guided Practice Databases

If you're looking for a place to experiment with your SQL queries and see them in action, our new "SQL Databases for Practice" course is the perfect spot. Dive in and play around with real data, right where the action happens! We're thrilled to launch a brand-new resource on LearnSQL.com, called SQL Databases for Practice. This course is all about giving you the freedom to sharpen your SQL skills on your terms, using real databases from various industries like education, e-commerce, and more.

Jakub Romanowski

Course of the Month: JOINs in PostgreSQL

Our PostgreSQL JOINs course will help you consolidate your knowledge of working with data from two or more tables in a PostgreSQL database. Throughout the month of July 2024, this awesome SQL course is absolutely FREE! Wondering why we want to give you this SQL course for free? We've been doing this for a long time. Every month, we choose one of our interactive online SQL courses and give users free access to it.

Jakub Romanowski

Course of the Month: 2023 Advanced Monthly SQL Practice

Enhance your SQL skills this June 2024 with our exclusive offer on the 2023 Monthly SQL Practice Sets - Advanced course, available for free for a limited time! As summer rolls in, it's the perfect time to learn new skills or brush up on the ones you've got. This June, why not seize the chance to deepen your SQL expertise with some challenging exercises drawn straight from the business world?

Jakub Romanowski

Course of the Month: 2023 Basic Monthly SQL Practice

Start enhancing your SQL skills this May with our free SQL course, 2023 Monthly SQL Practice Sets - Basic! Spring is a great time to learn something new or improve your current skills. This May, we’re offering a unique opportunity to boost your SQL knowledge through practical exercises drawn from real-world business scenarios. Available free for the entire month, our 2023 Monthly SQL Practice Sets - Basic course provides interactive challenges involving databases from different industries.

Jakub Romanowski

Track of the Season: SQL from A to Z in MySQL

Do you feel the spring already? Everything is in full bloom at this time of the year. Why shouldn’t it be the same with your career? You just need to water it with a new skill. Here is the brilliant SQL from A to Z in MySQL track, our Track of the Season. In this article, I answer common questions about this awesome set of online MySQL courses. Why should you care about relational databases at all?

Jakub Romanowski

Course of the Month: Revenue Trend Analysis in PostgreSQL

Need to understand what your data is saying about your business? In April 2024, our Free SQL Course of the Month is Revenue Trend Analysis in PostgreSQL. Don't miss this opportunity to elevate your analytical capabilities with a leading database system! Understanding revenue trends is crucial for business success, but effective data analysis can be challenging. Dive into the world of SQL reports and enhance your business growth strategies with PostgreSQL.

Jakub Romanowski

Course of the Month: Window Functions in PostgreSQL

Are you looking for the best way to master SQL window functions? Throughout March 2024, you can access the interactive course Window Functions in PostgreSQL for free. Boost your skills at no cost. Hurry, time is running out! Need a free PostgreSQL course on window functions? You've come to the right place! If you are reading this article, you probably know PostgreSQL is one of the most popular databases in the world.

Jakub Romanowski

Course of the Month: Common Functions in PostgreSQL

Do you want to be able to use popular PostgreSQL functions and process different types of data more easily? You've come to the right place! Here is the Common Functions in PostgreSQL course. Throughout the month of February, this SQL course is absolutely FREE! You are probably wondering why LearnSQL.com is offering a free SQL course. Well, we've been doing this for a long time. We choose one of our courses every month and give users free access to it.

Jakub Romanowski

Course of the Month: SQL Practice - Running

Kick off the new year and enhance your SQL skills with January’s free Course of the Month, Basic SQL Practice: Run Track Through Queries! As the new year unfolds, it's a time for reflection and the setting of new goals. A popular resolution among professionals and students alike is to acquire new skills or deepen existing ones. Whether it's learning a new language, mastering a software tool, or enhancing your job qualifications, the start of a new year provides a fresh opportunity for personal and professional growth.

Jakub Romanowski

Course of the Month: SQL Practice – A Store

This December, seize the opportunity to learn and practice SQL for free with our Basic SQL Practice: A Store course. Designed for an interactive and hands-on learning experience, this course starts with SQL basics and guides you through crafting queries that underpin business intelligence. Ready to get a grip on the fundamentals of SQL and dive into practical database management? Our December Course of the Month, Basic SQL Practice: A Store, is your perfect match!

Jakub Romanowski

Course of the Month: Window Functions Practice Set

Do you want to enhance your SQL skills and learn how to prepare complex SQL reports? Maybe you've learned SQL window functions but need a refresher. This month, our unique SQL course Window Functions Practice Set is completely free! You're probably wondering ‘What's the catch?’. Why do we give something for free to our users? Well... we want to support people like you who are constantly striving to be better.

Jakub Romanowski

Our New Interactive Course – SQL Practice: University

Are you a beginner looking for a hands-on online SQL course to solidify your skills? Or perhaps you're an SQL learner hungry for real-world applications of your new skills? LearnSQL.com, has crafted a robust practice-based learning experience to help you advance at your own pace. Here is SQL Practice: University! In today's data-driven world, mastering SQL is more than just a useful skill—it's a powerful tool that can open doors to many career opportunities.

Jakub Romanowski

Course of the Month: Write Functions in PostgreSQL

Why learn to write user-defined functions? I’ll explain in this article – and how you can learn for free during July 2023 with this LearnSQL.com  PostgreSQL course! PostgreSQL is one of the most popular databases in the world. This is mainly due to its great functionality and the fact that it’s open source (i.e. free!). Postgres is fast, it runs on multiple systems, and it’s suitable for almost any application.

Jakub Romanowski

Course of the Month: INSERT, UPDATE, DELETE in Postgres

Do you want to be a data engineer or data analyst? Do you work with databases daily and need to expand your skills with the basics of data manipulation? You've come to the right place. For June 2023, our SQL course of the month is PostgreSQL INSERT, UPDATE, and DELETE Commands! Learn SQL for FREE! How do you get this free PostgreSQL course in June? Create a free LearnSQL.

Jakub Romanowski

Course of the Month: SQL Reports in PostgreSQL

If you are looking for a course that takes your PostgreSQL skills to a completely different level, you've come to the right place. You can learn for free in April! We chose SQL Reporting in PostgreSQL for our Free SQL Course of the Month. It's just awesome – I'll tell you why. Do you want to be even better at SQL? Do you know the basics and want your SQL reports to be even more sophisticated?

Jakub Romanowski

Track of the Season: SQL from A to Z in SQL Server

Maybe your company uses MS SQL Server and you’d like to join the data analysis team. Or maybe you want to add a new skill to your CV. Either way, our SQL Track of the Season: SQL from A to Z in MS SQL Server, will help. In this article, I’ll answer common questions about this awesome set of online MS SQL Server courses. If you’re reading this blog post, you probably already know that you should start learning SQL and working with databases.

Jakub Romanowski

Track of the Season: Creating Database Structure

Summer is a great time to learn something new! Have you heard about data engineering? It’s one of today’s hottest skills. In this article, I'll show you why we selected our Creating Database Structures track as our SQL Track of the Season – and why it’s your ticket to a new career! LearnSQL.com offers online SQL training tracks – logically structured and well-thought-out learning paths that will help you work towards becoming an SQL expert.

Jakub Romanowski

Course of the Month: PostGIS

What is PostGIS, and why should you learn it? (Hint: Our SQL PostGIS course is free throughout June 2022!) Did you know databases can store geographic data? This is how interactive maps are made, most often based on PostGIS. In this article, I will tell you what PostGIS is and why it’s worth learning. Moreover, I am going to offer you an awesome online PostGIS SQL course which you can do for free during June 2022!

LearnSQL.com Team

Course of the Month: SQL Practice Set in MS SQL Server

You have to train a lot to learn a new skill. It is the same with MS SQL Server. Do you want to write good SQL queries? Or maybe you are preparing for a job interview? You've come to the right place! Throughout October you will have access to our amazing hands-on MS SQL Server course for FREE! You probably just thought: “There must be a catch. Why would someone give away SQL courses for free?

Jakub Romanowski

Course of the Month: Revenue Analysis in SQL Server

It is impossible to run a business without a good analysis of revenue trends. But how do you do it effectively? You can rely on good old Excel, but a much better idea is to use SQL and databases. Learn how to create SQL reports and track the growth of your business with MS SQL Server. Here is the course, Revenue Trend Analysis in SQL Server. It’s FREE throughout September!

Jakub Romanowski

Course of the Month: Creating SQL Reports in SQL Server

This is another in our series of free SQL Courses of the Month. This time, you can learn SQL Reporting in MS SQL Server for free. Do you want to be able to prepare even better SQL reports? Or maybe you have some basic knowledge of SQL Server (one of the major SQL dialects) and would like to go a step further? This is the course for you.

Jakub Romanowski

Track of the Season: SQL Reporting in MS SQL Server

It's the best time of the year for a change! Learn something new and boost your career! This is our SQL Track of the Season: SQL Reporting in MS SQL Server! In this article, we’ll answer common questions about this track. Summer is here. Does the sun make you want to learn something new? Maybe surfing or Portuguese? Maybe you've wanted to learn crocheting all your life? Follow your dreams!

Jakub Romanowski

Course of the Month: Recursive Queries in SQL Server

Do you want to become a SQL expert? To do this, you need to learn SQL CTEs or Common Table Expressions. They can make your queries clearer and more readable. And during July 2021, you can learn CTEs for free using our interactive Recursive Queries in MS SQL Server course! How can you get this free SQL course? Create a free LearnSQL.com account or log in if you already have one.

Jakub Romanowski

Course of the Month: GROUP BY Extensions in SQL Server

Do you create SQL reports? Do you want them to be even better and more effective? Are you working with MS SQL Server and want to expand your query writing skills? Here is a great, interactive GROUP BY Extensions in MS SQL Server course. For the month of June, you can learn and finish this course for absolutely free. How can you get this free SQL course in June?

LearnSQL.com Team

Course of the Month: SQL Practice Set

Are you starting your adventure with SQL and looking for a place to practice your SQL queries? Or maybe you are preparing for a job interview? I have good news for you. Throughout May, you will have access to our amazing SQL practice course for FREE! Why is LearnSQL.com giving you a free SQL course? Every month, our users get the opportunity to take one of our great SQL courses for free.

LearnSQL.com Team

Course of the Month: Standard SQL Functions

Are you dreaming of becoming a data analyst? Or maybe you just want to work effectively with your company’s databases? You can – with SQL functions. We’ve selected Standard SQL Functions to be our January 2021 SQL Course of the Month. What will you find inside? I asked Agnieszka Kozubek-Krycuń, Vertabelo's Chief Content Officer, about it. Here's what she said. What are SQL functions? The term reminds me of SELECT or JOIN.

LearnSQL.com Team

Course of the Month: Customer Behavior Analysis in SQL

Do you run a business? Do you want to squeeze even more out of your data? Start by analyzing your customers' behavior using SQL! Throughout December, you can learn how to do it for free on LearnSQL.com! I asked Agnieszka Kozubek-Krycuń, Vertabelo's Chief Content Officer, about our December Course of the Month, Customer Behavior Analysis in SQL. Here's what she told me. Let's start with the basics: Why analyze customer behavior?

LearnSQL.com Team

Course of the Month: GROUP BY Extensions in SQL

Do you want to develop your SQL skills? Do you want to get more out of your data and prepare better reports and summaries? The answer is learning to use SQL’s GROUP BY extensions. But how should you go about this? I asked the same question to Agnieszka Kozubek-Krycuń, Vertabelo’s Chief Content Officer. As she explains, the secret is in this November’s free SQL Course of the Month: GROUP BY Extensions in SQL.

LearnSQL.com Team

Course of the Month: How to INSERT, UPDATE, DELETE Data

So, you've started learning SQL, and you already know what the SELECT command is and when to use it! Congratulations! Now, it's time to take the next step towards becoming an expert. You need to know the SQL UPDATE, INSERT, and DELETE commands to modify data in your tables. These are the basics that will allow you to work with tables. But what's the best way to learn them? I asked Agnieszka Kozubek-Krycuń, Chief Content Officer at Vertabelo.

LearnSQL.com Team

Course of the Month: Analyzing Revenue Trends in SQL

We work hard, we learn SQL, and we develop professionally. But why? For our own satisfaction, but also for money! The knowledge of SQL will increase your income significantly. If you are proficient in SQL, you can better analyze your company's revenue. How? I asked Agnieszka Kozubek-Krycuń, Chief Content Officer at Vertabelo. In this article, she answers your questions about our September SQL Course of the Month: Analyzing Revenue Trends in SQL.

Dorota Wdzięczna

New Course Series: Monthly SQL Challenges

SQL learners sometimes need challenges. Do you want to test your problem-solving skills or your knowledge of SQL? Then take our monthly SQL Challenges! We prepare them on LearnSQL.com every month. Each Challenge relates to a different interesting topic and will help you keep your SQL game sharp. In this article, you'll discover what our LearnSQL.com Monthly Challenges are and where to find them. We’ll also look at the Challenges collected in our Monthly SQL Challenge Mini Track.

Dorota Wdzięczna

You Want to Learn SQL? You've Come to the Right Place!

Interested in learning SQL? You've landed at the perfect place! At LearnSQL.com, we offer a comprehensive collection of SQL courses designed for everyone from complete beginners to seasoned professionals. This article will give you an overview of what you can expect from our course offerings—whether you're getting started with SQL or you want to master advanced SQL topics. Welcome to LearnSQL.com! LearnSQL.com is an online platform with interactive SQL courses intended for a wide range of backgrounds in SQL.