Online Practice

Alexandre Bruffa

Learn SQL in 10 Minutes

SQL, or Structured Query Language, is a programming language used to communicate with databases. With SQL, you can retrieve data from a database, insert new data, and update or delete existing data. You can even modify the structure of a database: you can add or delete tables or columns and change the relationships between tables. SQL is a standard, meaning it is a reference. Read about the history of the SQL standard in our article “The History of SQL Standards.

Tihomir Babic

10 Beginner SQL Practice Exercises With Solutions

Solve these ten SQL practice problems and test where you stand with your SQL knowledge! This article is all about SQL practice. It’s the best way to learn SQL. We show you ten SQL practice exercises where you need to apply essential SQL concepts. If you’re an SQL rookie, no need to worry – these examples are for beginners. Use them as a practice or a way to learn new SQL concepts.

Maria Durkin

Best PostgreSQL Courses for Beginners

So you want to learn PostgreSQL but aren't sure how to get started? In this article, we look at some of the best online courses available on the Internet for learning PostgreSQL, so you can get started right away! What Is PostgreSQL? PostgreSQL is used in major companies such as Apple and Instagram. You may be wondering: should I learn PostgreSQL? PostgreSQL is a popular dialect of SQL, or Structured Query Language, a programming language for accessing and managing data in relational databases.

Maria Durkin

How to Learn SQL in a Week

Need to learn SQL in a hurry? In this article, we’ll give you a learning path that will help you learn SQL in a week! So you want to learn SQL but don't know where to begin, how long it will take, or even if you have the time. In this article, we'll show you how you can learn SQL within a week using some resources that will get your SQL journey started in no time!

Jill Thornhill

How to Practice Advanced SQL Online

Want to go from intermediate to advanced SQL user? You’ll need to practice! Here are some ways you can practice advanced SQL online. You’ve seen how SQL helps you make data-driven decisions. Perhaps you’ve even learned some advanced features. But you’d like to become an expert—and for that, you need practice, practice, and more practice. Is it possible to get advanced SQL practice online? Taking SQL to the Next Level What is advanced SQL?

Kamila Ostrowska

Best MySQL Courses for Beginners

SQL is among the most important languages when it comes to dealing with huge amounts of data. If your job includes analyzing or collecting data and you feel that an Excel file is not enough, you need to learn or develop your SQL skills. And if you learn SQL, you also need to know one of its most popular dialects - MySQL. If you've made the decision to learn SQL, you've come to the right place.

Jakub Romanowski

Learning SQL in Your Native Language is Finally Possible

Do you or someone you know speak English as a second language? Would you like to learn SQL online in your preferred language? Good news! Our awesome SQL courses are now available in French, Spanish, German, Italian, and Portuguese! SQL, or Structured Query Language, is a programming language used for managing and manipulating data in databases. It's an essential skill for anyone working with data, whether you're a data analyst, a software developer, or just someone who wants to understand how databases work.

Maria Durkin

The Best Apps to Learn SQL

Let us guide you to the best apps for learning SQL on the go. Do you want to learn SQL but you don't know where to begin? If so, you've come to the right place! In this guide, we'll go over the best apps for learning SQL. We'll look at what each app has to offer and how it can help you get started with SQL. Let’s go! What Is SQL?

Ignacio L. Bisso

25 Advanced SQL Query Examples

One of the best ways to learn advanced SQL is by studying example queries. In this article, we'll show 25 examples of advanced SQL queries from medium to high complexity. You can use them to refresh your knowledge of advanced SQL or to review before a SQL interview. Many of the examples in this article will be based on the following employee table. Only a few examples will be based on other tables; in these cases, the tables will be explained along with the example.

Jill Thornhill

Top SQL Certificates in 2023

SQL is an essential skill in today’s data-driven world. Looking for the best SQL certificates to further your career can be confusing. This article gives some pointers that will help you make the best choice to fit your goals. Who needs an SQL certificate? If you can write advanced SQL queries, surely you can just demonstrate your skills at the interview and you'll be hired. Yes ... but ... you won't reach the interview unless the recruiter invites you.

Maria Durkin

This Advanced SQL Course Will Boost Your Career!

Can you already create pretty good SQL reports? Do you want to take it a step further? In this article, I'll explain how an advanced SQL course can propel you (and your career) to the next level. Since you are looking for information about SQL, you probably already know how important data is nowadays. Very few companies can stay on the market without using the power of data or basing their strategic decisions on it.

Jill Thornhill

Is SQL Hard to Learn?

If you have no IT skills, how hard is it to learn SQL? Will it be too technical for you? Is it worth the effort? And where would you start? In this  article I will answer those questions. As an IT consultant and trainer, I've often advised people to learn SQL. And, almost as often the reply has been, "Is it hard to learn SQL? Do I need technical or IT skills to learn it?

LearnSQL.com Team

Christmas SQL Scholarship 2022

We know 2022 was very difficult for many of you. Now that it is slowly coming to an end, we’ve decided to end it with something positive. Here is the Christmas SQL Scholarship 2022! Let's enter the new year together with new energy and a chance for change! The LearnSQL.com Team wants to help those less fortunate. This Christmas, we are going to help someone change his/her life. We are going to fund 50 SQL Scholarships for those who cannot afford to learn SQL and who may find it helpful in a difficult situation.

Tihomir Babic

5 Practical Examples of SQL’s WITH Clause

These five practical use cases will make you want to use the SQL WITH clause daily. The WITH clause can help you write readable SQL queries  and break complex calculations into logical steps. It was added to SQL to simplify complicated long queries. In this article, we’ll show you 5 practical examples of the WITH clause and explain how using it makes SQL queries more readable. The WITH clause is also called a Common Table Expression (CTE).

Jill Thornhill

The Future of SQL

Is it worthwhile to learn SQL? Or will a language that’s over 40 years old soon be outdated? Have relational databases been eclipsed by the advent of other database solutions like NoSQL? In this article, we answer these questions. Do you need to upgrade your IT skills? What should you learn first? The choice is daunting. If you're looking to the future, you obviously want to invest your time in something that's still widely used and will continue to be in the years to come.

Ignacio L. Bisso

What Data Type to Choose for a Column When Creating a Table in SQL

Databases store data values of various kinds. For example, you may store the name of a product as a text string, the price of a product as a number, or the date a product is sold as a date value. These values – the product name, the price, and the sale date – are stored as different data types. In this article, we explain several SQL data types with real examples.

Himanshu Kathuria

Top 6 Online SQL Courses for Beginners in 2023

Whether you’re dreaming of a career in data analytics or just want to develop yourself, learning SQL is worthwhile. But don’t waste your time on poorly-designed courses or other learning resources! In this article, I’ve collected the best online SQL courses for beginners. Pick one and start being awesome! SQL (Structured Query Language) has emerged as one of the top skills that recruiters look for when it comes to data related jobs.

Ignacio L. Bisso

What Are the Basic SQL Queries?

You can access the data in a database using some basic SQL queries. In this article, we review the fundamentals SQL queries every beginner should know. Databases are everywhere, and they contain different kinds of data. Almost all of them support SQL, a language that lets you read and manipulate the data inside a database. In this article, I’ll show you the basic SQL queries that you can use to perform many common everyday data tasks.

Himanshu Kathuria

Are You a Student? Start a New Semester With SQL Courses!

Find out why you should learn SQL as a student. Do you want to increase your chances in the job market and prepare for the challenges of the future? Then read on. You may have already secured admission to your favorite courses and be preparing for the upcoming semester to begin. The education you receive at your school prepares you for a stellar career. However, in a world in which the skills required to thrive in today’s jobs are evolving quickly, it is imperative to learn important skills and courses to keep yourself relevant and poised for success.

Kateryna Koidan

Learn SQL for Data Science With LearnSQL.com

If you are interested in a data science career and have looked at a few relevant job descriptions, you've probably noticed many leading tech companies expect their data scientists to know SQL. Let's see how you can learn SQL for data science and become more valuable to any data-driven organization. A data scientist is a complex technical role that expects a combination of the skills of a statistician, a business analyst, and an IT expert.

Dmitri Vaitkun

What Is an SQL Query?

An SQL query is the most basic SQL command. It is a question you ask a database. In this article, we dive into the basics of SQL queries to kickstart your SQL journey with practical knowledge right away! SQL, or Structured Query Language, is a programming language designed to interact with databases. When you want to access data in a database, be it to alter, delete, add, or simply extract information, you use SQL.

Kateryna Koidan

How to Set Up a Company SQL Training Program with LearnSQL.com

Are you looking to set up a business or corporate SQL training for your company's employees? In this article, we’ll discuss how to build an efficient SQL training program and why the LearnSQL.com platform is the choice of leading tech companies. If you are responsible for employees’ professional development – especially in a data-driven company – you know that SQL is essential for anyone who works with data. This programming language can enhance the performance of data and business analysts (for whom SQL is often a primary tool) as well as marketers, salespeople, HR specialists, auditors, and many more.

Kamila Ostrowska

5 Tips for Learning SQL for Beginners

Being data-driven is a hot trend right now. Employers are looking for people who can work with databases. This is why you should learn SQL. In this article, I'll explain how to go about doing so. Yes, learning SQL may be the right thing for you even if you have never seen a line of code. As with any new skill, it requires the right approach and the right resources.

Himanshu Kathuria

Learn SQL in 4 Steps

Want to work with data? You’ll need SQL. Fortunately, you can learn SQL in just 4 steps! If you are interested in data crunching or working with data in general, you’ve probably heard something about SQL. Now that data storage is cheap and accessible, data from every transaction can be stored and analyzed. Hence, there’s great demand for people who can capture and work with this data. We’ve even seen entire companies profit from being proficient with data; for example, consider the ever-growing value of Google and Facebook (now Meta).

Marcin Koryszewski

Over 40 and Want to Upskill? Learn SQL!

You have several years of experience. Your work has even been written up in a few case studies. Yet, you still have a hard time finding the right path to improve your career. If that's true for you, the answer is to learn SQL. In this article, I'll tell you why. Why learn SQL when you’re already an experienced professional? It’s always good to learn something new. You may want to pick up a new hobby, try out a different industry, or get a new skill to help your career.

Himanshu Kathuria

The SQL Syntax Is Simple: True or False?

Are you contemplating learning SQL but are concerned about how difficult it may be, especially if you have no prior coding experience? If so, you are not alone. In this article, I show you how simple SQL is and that it is worth your time learning it. You just need to know how to approach it properly. Many people carry the notion that learning SQL is much like learning other programming languages.

Jakub Romanowski

Join the LearnSQL.com Affiliate Program!

Are you a creator, blogger, or YouTuber? Do you have an audience, do you appreciate our interactive SQL courses, and would you like to help promote them? By the way, you can earn some money! Here is our SQL Affiliate Program. We create our SQL courses with a passion and a love for databases. Looking at the reactions and the reviews of our users, we do quite well. If this is your first visit to LearnSQL.

Marcin Koryszewski

Five of the Top Websites You Should Know When Learning SQL in 2022

If you are learning SQL in 2022 and are looking for some resources to help your learning, you've come to the right place. Here are 5 of the top websites you should know when learning SQL. Today, I'm going to share a list of websites that help you with learning SQL. You will find useful resources, interact with a fantastic community, and expand your database knowledge. Or you may need some help while working on SQL queries.

Jakub Romanowski

New MySQL Courses Are Here!

A lot of you have been waiting for new MySQL courses on LearnSQL.com – and finally, they’re here! Now you can learn everything MySQL in a simple, understandable, and fun way. We've worked a lot with these online SQL courses and created hundreds of interactive exercises to help you learn this popular SQL dialect. If you want to communicate with the world’s most popular open-source database, our MySQL courses will help you achieve that goal!

LearnSQL.com Team

LearnSQL.com’s Monthly SQL Practice in 2022

Are you looking for ways to practice SQL? Tired of boring exercises based on unreal scenarios? We have something for you! Every month, we publish a new set of SQL practice exercises. You'll find all of them in the monthly SQL Practice. Here at LearnSQL.com, we believe the best way to learn SQL is through practice. All of our SQL courses (and there are over 30 of them!) are hands-on.

Kamila Ostrowska

The Top 5 SQL Courses and Learning Platforms for 2022

It’s the New Year! Time to start thinking what good you can do yourself in 2022. If you haven’t decided yet, we want to recommend learning something new – specifically, learning SQL. Maybe learning SQL is already on your 2022 to-do list. If so, take it seriously – learning SQL can change your career path and even your life! It makes sense to find the best SQL courses so you can learn effectively.

Karolina Niewiarowska

Top 10 Beginner Online SQL Courses in 2022

Ready for New Year’s changes? Good, because now you have a perfect chance to achieve something new: Improve your skills by learning SQL! In this article, we’ll point you toward some great online SQL courses to help you meet this goal. SQL, or Structured Query Language, is the language used to communicate with relational databases. When you know SQL, you can add, delete, change, and make calculations using the data in a database.

Jakub Romanowski

Top 5 MS SQL Server Courses for Beginners

Every journey, including a career change, begins with the first step. If you're thinking about learning data analysis or strengthening your MS SQL Server skills arsenal, you've come to the right place. Here are the top 5 MS SQL Server online courses. Enjoy! You've probably heard that today’s organizations rely heavily on data analysis. You heard right. They are looking for employees who can navigate the world of databases and draw conclusions from data.

Jakub Romanowski

New Window Functions Practice Set Is Here!

Have you learned the SQL window functions? Or maybe, you forgot when and how to use them correctly? Are you preparing for an advanced SQL job interview? You've come to the right place! This is the new Window Functions Practice Set. This is very good news for all SQL learners and database professionals who want to improve their skills. The LearnSQL.com Team is proud to present the new Window Functions Practice Set!

Karolina Niewiarowska

How Hard Is It for People Without IT Experience to Learn SQL?

Learning SQL doesn't have to be difficult! Taking an interactive SQL course is a great way to start your career in the high-paying world of IT. When you started your adventure with computers, you surely didn't realize how far you could go. You were probably only a few years old, and your first experience with a computer was probably gaming. Today, computers provide more than just quick access to entertainment; they’re a great tool for earning money.

Jakub Romanowski

Why Is the SQL Practice Set my Favorite Online Course?

My friends know that I cannot sit still. I always have to do something, read something, and learn new stuff. It's stronger than me. But I don't complain, because this approach has only helped me in my life. I have done a ton of different online courses, but the SQL Practice Set has proved to be the best so far. Find out why. Learning SQL was not easy for me.

Karolina Niewiarowska

I Needed a Good SQL Course… So I Chose SQL Basics.

Why did I decide to take a SQL course? And how did I come across LearnSQL.com? It’s story time! Did I ever think that my professional career would deal with databases? Absolutely not. It didn’t even cross my mind that it would happen. Let me explain why I started learning SQL … and how I got to where I am today. Meet the SQL Newbie I suppose few people have their lives planned from A to Z.

Karolina Niewiarowska

How to Learn SQL Faster

Struggling with learning SQL? Does it seem like you’re doing everything right, but not making progress as fast as you’d like? Don't worry, I'll help you. Here are some tips for learning SQL quickly and painlessly. Are you wondering how to learn SQL faster? If so, I’m here to help with some practical tips. And once you’ve found the right motivation and the right sources of knowledge, you’ll be able to learn faster.

Jakub Romanowski

New Basic SQL Practice Course on LearnSQL.com

Hey, did you hear that there’s a brand-new Basic SQL Practice course on LearnSQL.com? This is a great opportunity to refresh your SQL, write some queries, and take your analytical skills to the next level. We’re proud to introduce Basic SQL Practice: A Store! Where did the idea for this new SQL practice course come from? From our users! They’ve let us know that they need more hands-on SQL exercises at a beginner level.

Jakub Romanowski

I Took the SQL Basics Course... Here's What Happened!

In this article, I will share my personal story with you. But don't worry – it's not about a scandal or a sad story of failure. I'll tell you how a successful news journalist fell in love with SQL. It all started when I took the SQL Basics course at LearnSQL.com. There are moments in life that change everything. Mine happened when I decided to give up my long-term career and start a completely new chapter in my professional life.

Karolina Niewiarowska

Free Online Courses You Should Take If You Use SQL

If you are an SQL enthusiast, already work with SQL, or want to learn it – you'll surely be interested in acquiring new skills that will support your growth. These free courses will increase your productivity, help you find your way around the work environment, and help you become a better analyst. By the way, they are also fun. Whoever said learning new things is easy has never tried to learn quantum physics (thank you, Mr.

Karolina Niewiarowska

Best Online SQL Courses for 2021

In this pandemic era, it's no surprise that online learning has become even more popular. To help you narrow things down, I’ve prepared a list of 2021’s 10 best online SQL courses. Find out where you can learn SQL effectively! The number of online courses on offer – especially in the tech industry – is now impressive. You can find something that suits your interests, competences, and professional ambitions. But how do you know which to choose among the many online SQL courses out there?

Karolina Niewiarowska

Does Music Improve Work Efficiency?

Do you sometimes have trouble focusing when working or studying? Do you ever lack motivation? I have the perfect solution for you. Music! I am excited to tell you about how music can influence your efficiency. Music can soothe the savage beast, they say. It can also inspire action. In general, music is an important element of human life. Most activities are just more enjoyable with background music. However, listening to music while studying or working is a bit different.

Kamila Ostrowska

Who Should Learn SQL?

If you learn SQL, will you use it in your current (or dream) job? If you learn it, will it help you with your daily tasks? SQL has so much potential that everyone can benefit from it – including you! Read this article to find out how much you will gain by knowing SQL. I could answer the title question with one word: everyone! But not everyone wants to learn SQL.

Kateryna Koidan

What Is the RANK() Function in SQL, and How Do You Use It?

Who are your top 10 customers? Who are the top-performing employees in each department? To answer questions like these, you’ll need to rank the output of your SQL query. Let’s see how the RANK() function assists with ranking results in SQL.   There are many use cases in which you might need to rank rows in SQL. You may want to rank customers based on the sales volume, students based on their exam results, company assets based on their present value, departments based on the number of employees, or users based on their date of registration.

Andrew Bone

What Is CASE in SQL?

SQL CASE is a very useful expression that provides if-else logic to your SQL queries. It’s a slightly more advanced topic, but you’ll need it when preparing reports – it will deliver massive value to your personal and professional projects. The SQL CASE statement is a control flow tool that allows you to add if-else logic to a query. Generally speaking, you can use the CASE statement anywhere that allows a valid expression – e.

Jakub Romanowski

Is MS SQL Server Still Worth Learning in 2021?

There are some open-source database solutions for MS SQL Server. Some have more support from the online community, and others may run faster in certain situations. Nevertheless, MS SQL Server is still hot and is not going anywhere. Is it worth learning MS SQL Server in 2021? In this article, I will try to answer this question. Read on. What is MS SQL Server? Let's start with the basics. You've probably heard that MS SQL Server is a popular Relational Database Management System (RDBMS).

Kamila Ostrowska

Best SQL IDEs for You

Maybe you just started learning SQL. Maybe you already have some experience. Whatever your situation is, choosing the right IDE for you is another step in your development. Why IDE? IDE stands for integrated development environment. It is a software application that enables us to combine various aspects of writing a computer program. An IDE usually contains a source code editor, build automation tools, and a debugger. You might ask why you need an IDE when you have the command line available on your computer.

Jakub Romanowski

Where Can I Find Good Courses to Practice MS SQL Server?

You’ve got the basics of MS SQL Server. Where can you find practice exercises in this SQL dialect? You've started learning MS SQL Server. Maybe you've done a course, watched some YouTube tutorials, and feel pretty confident in your knowledge. What now? Let me tell you, you need to practice. Only by writing queries can you truly master SQL. In this article, I will show you where to find practice MS SQL Server exercises.

Timothy Edison

How Much SQL Practice Do You Need to Become a Pro?

Are you wondering how long it will take to learn and practice SQL before you can call yourself a pro? In this article, I will try to help you answer this question. Being a pro in SQL can mean many different things. Some people would say that being a professional is about mastery of advanced SQL, i.e. window functions or complex subqueries. For other people, being a professional means getting paid for your skills.

Karolina Niewiarowska

Learn SQL And Start Your Journey Towards Personal Growth

Are you at the very beginning of your career and don't know what employers are looking for? Maybe you already have a lot of experience, but feel like it's time to change or update your skillset. Learning SQL can be a great choice. Read on and find out why. Regardless of your career stage, you cannot neglect your personal development. Whoever does not move forward falls behind. As you start learning new things, new opportunities will open up for you, both in your personal and professional life.

Tihomir Babic

6 Advanced SQL Queries for Analyzing Financial Data

Are you an advanced SQL user who’s new to finance? Do you want to learn how to use your knowledge to analyze financial data? The article will give you some guidance. You probably know that SQL is a potent tool for analyzing all sorts of data. The bigger and more complex data, the more beneficial SQL becomes. In certain situations, financial data can be very complicated; producing a sophisticated analysis requires sophisticated tools.

Rebecca McKeown

How Much SQL Do I Need to Know?

Learning a new skill or starting a new profession can be a real challenge, especially when you’re unsure of how much you really need to know before taking the plunge. Imposter syndrome is also a real thing – how could you possibly catch up with all those SQL ‘experts’ who seem like they’ve been doing this since they were in diapers? The good news is you can learn SQL quickly and easily, and you don’t need to know nearly as much as you think you do.

Ignacio L. Bisso

Data Types in SQL

Read this article and learn the ABC of SQL data types. Data types are used to define the type of data stored in a database. However, there are related concepts that a good SQL developer should know: data type conversion, what operations are possible between different data types, date arithmetic, etc. SQL also provides functions that manipulate values of different data types (i.e. functions for string data, date and time data, etc.

Zahin Rahman

Where Can I Find Good SQL CTE Exercises?

Find the top online resources for SQL Common Table Expression (CTE) exercises! CTEs allow you to structure and organize SQL queries efficiently, which is essential if you want to advance your SQL knowledge. A Common Table Expression, or CTE, is a SQL syntax that creates a temporary data set. This set contains separate data than the main query, which can typically be referenced or reused in a subsequent query. A CTE is considered temporary because the result is not permanently stored anywhere and only exists for the duration of the query.

Jakub Romanowski

Stories of the LearnSQL Scholarship Program

2020 is behind us. It was an extremely difficult year: We’ve struggled with the Covid-19 pandemic, a worldwide economic crisis, and constant anxiety. Many people have lost their jobs and their prospects for a better tomorrow. That's why we decided to do something positive: establishing a SQL scholarship program. We decided to find people in difficult situations and try to help them. For many, learning SQL can be their chance to get a job and develop their career.

Jakub Romanowski

Best SQL Video Tutorials for 2021

Ready for this year’s picks for the best YouTube SQL video tutorials? Here are our top 5 choices! It's been well over a year since I last wrote about SQL tutorials on YouTube. Those seven channels can help you learn the basics of SQL quite painlessly, but now it's time to add to that list with 2021’s top contenders. Which YouTube SQL tutorials are worth your time and attention? I’ve got my favorites, but first, let’s consider an important question:

LearnSQL.com Team

Why Should Learning SQL be One of Your New Year's Resolutions?

In answering this question, we’ll take a look at the idea behind New Year’s resolutions, explore what SQL is, and see why learning it should be your goal for 2021. We’ve all heard of New Year’s resolutions, and we all have personal experience of how difficult it can be to see them through to a successful conclusion. We’ll examine the history of New Year’s resolutions, why they often fail, and how to ensure your resolution for learning SQL in 2021 doesn’t meet with the same fate as so many others that never made it past the end of January.

Jakub Romanowski

2020’s Best LearnSQL.com Articles

We published a whole lot of interesting SQL articles this year. I had a difficult task – choosing the best LearnSQL.com articles of 2020. And here they are. The crazy year of 2020 is coming to an end. How will we remember it? Probably by the COVID-19 pandemic; we stayed home and fought the virus. It was a difficult time. However, many of us did not give up and kept trying to achieve our professional goals.

Kamila Ostrowska

How to Practice SQL with LearnSQL.com

Practicing new skills online needs motivation and self-discipline, but it’s worth it. We’re facing a difficult, uncertain time. On one hand, the COVID pandemic caused a lot of fear. What will happen in the future? Will I keep my job? Will we stay safe and healthy? On the other hand, COVID is giving us a lot of time. Working remotely, not having anything to do but stay home and… And what?

Jakub Romanowski

The Best SQL Lectures on YouTube

YouTube contains a vast amount of information. The trick is to know how to find what’s valuable. If you type “SQL lectures” in the YouTube search engine, you will probably get a list of boring or unhelpful clips. However, there are hidden gems, and I’ve compiled a list of the best SQL talks I’ve found on YouTube so far. First, let's establish one thing. I didn't choose any YouTube SQL tutorials when making this list.

Arleta Więch

Practicing SQL for Your First Day of Work

Your new SQL job is likely to surprise you in many ways. To minimize the risk of getting lost in the jungle of data, I recommend you get some additional SQL practice before your first day. There are special SQL practice sets and projects on the internet to help you prepare. You’ll also get help from your colleagues, as programmers are usually open and supportive. If you’re reading this, you’ve probably heard about the opportunities SQL and data science offer.

Kateryna Koidan

How Do You Write a SELECT Statement in SQL?

SQL is a language to communicate with relational databases, and the SELECT statement is the first thing you’ll learn when you start using SQL. In this article, you’ll learn how to write SELECT statements, from the basics to more advanced. What Is SQL? SQL stands for “Structured Query Language.” It has a long history that started in the 1970s. Being the standard for communication with relational databases, it has maintained its popularity.

Adrian Więch

How To Learn The SELECT Statement in SQL

When you think about learning SQL, one of the first things you come across is the SELECT statement. Selecting information is arguably the most important SQL feature. In this article, we’ll demonstrate the typical use cases for SQL SELECT with practical examples. Read this article if you’re a beginner database user and would like to know what SELECT can do for you. SQL, or Structured Query Language, is the programming language the IT world uses to communicate with databases.

Kamila Ostrowska

Practice SQL Before Interviewing a Potential Employee

Has your company grown to the point that you need to hire an SQL expert? Have you found a candidate for the job? How do you prepare for the interview, especially if you don’t know SQL? Don't worry! Follow our suggestions on how to practice SQL. We have tips and tricks to help you feel confident and find the perfect employee. Who You Want To Hire First of all, you need to know the requirements for the new employee.

Zahin Rahman

Top 7 Online Courses for Data Engineers

This article summarizes the top online courses available for data engineers. We have picks suitable for beginners as well as intermediate learners. If you’re interested in database design and management, check these courses out! Most individuals who aspire to enter the realm of data aim for data scientist or data analyst roles. While these roles are indeed very rewarding because of their tangible links to customers and business direction, the role of data engineers is equally vital for businesses that operate in a data-rich environment.

Magdalena Wojtas

Where to Go After Learning SQL Basics

Learning to code is – in general – a lot of fun, for sure. Even after a few years in the IT industry, I still love learning new technologies. And I now know that learning with a good plan is even better than learning without one. This also applies to learning with advanced SQL courses. In this article, I'll show you how learning paths can save you some time and a lot of frustration.

Jakub Romanowski

Don't Be a SQL Noob! Start Learning with Our SQL Basics Course

Why learn SQL from our interactive online courses? Two reasons: 1) Power up your career. 2) Avoid being a noob. What does it mean to be a noob? “Noob” comes to us from the world of computer games. It’s a combination of “newbie” and “beginner”. It’s not a very nice word. It means that someone has found you an inexperienced player and (even worse) resistant to learning. This resistance is what’s important.

LearnSQL.com Team

Learning SQL for Free – Is It Worth Betting on Free Online Learning?

Everyone likes to get something for free, even when it comes to SQL courses. But is free always good? Find out how and where you can learn SQL for free – in a way that’s worth your time. Beginner-friendly database courses and SQL tutorials often promise to teach SQL fundamentals like SELECT, WHERE, GROUP BY, HAVING, and ORDER BY. These commands are the basis of a powerful set of skills for entry-level jobs in data analysis or databases.

LearnSQL.com Team

New Course: Customer Behavior Analysis in SQL

Good news! A new SQL course is here! We’re happy to announce the release of our Customer Behavior Analysis in SQL course. Do you want to get to know your clients and better understand their needs and behavior? If so, this great interactive SQL course is for you. Discover the power of full customer lifecycle analytics in SQL and know more than your competitors. The LearnSQL.com team is happy to announce the release of a new SQL course on our platform: Customer Behavior Analysis in SQL.

Jakub Romanowski

Did You Know LearnSQL.com Has Free SQL Courses?

Who doesn't like getting something for free? Each month, we give LearnSQL.com users a bit of help in their learning journey – a free, fully interactive SQL course. Since April, we have been giving our users the opportunity to learn SQL for free. Each month, we choose one of our SQL courses and give you full access to it for that month – completely free of charge! Cool, right?

LearnSQL.com Team

SQL 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.

Jakub Romanowski

Where Can I Find Free Online Data Sets to Practice SQL?

Okay, you've installed the RDBMS of your choice. You know the basics of SQL and ... what's next? You would like to be able to practice SQL functions you learned in our course. Maybe you have even done our SQL Practice Set course and are hungry for more. To work with a database, first of all, you need—yes, this is not a surprise—a database! Where do you get the data for your SQL queries?

Kamila Ostrowska

5 Reasons You Might Fail to Learn SQL

Learning SQL isn’t hard, but that doesn’t mean you’ll sail through, problem-free. Here are five things that might cause unwary SQL learners to fail. For me, learning SQL wasn’t always about the joy of discovery. Learning itself is not all about curiosity and the satisfaction of succeeding. Sometimes there is a sense of failure. We’re often told it is better to focus on positives. I believe this. However, it is also crucial to find out what went wrong when we don’t succeed at something.

Jakub Romanowski

Learning SQL When You Work and Have a Family

Do you want to learn SQL but feel you can’t squeeze one more thing into your jam-packed life? Here are my tips on learning SQL when you work and have kids. You work full-time and have a family. Daily responsibilities overwhelm you. I’ve been there. Heck, I live there. I work from home and have a family. While I was writing this article, I was also waiting for a call on Zoom, doing the laundry, and cooking some pasta for my son’s dinner.

LearnSQL.com Team

SQL 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

SQL Course of the Month – PostGIS

It's summer, and it's travel time ... at least it would be under normal conditions. The pandemic is still going on, but that doesn't stop us from dreaming about distant trips and visits to beautiful places. For now, most of us will have to do it on a map. Did you know that databases can store geographical data? With interactive maps, if you find a nice summer house on the internet, you can accurately track it and plan the best route there.

Kate Stolarek

How to Learn the SQL Syntax

Read about what SQL is, and choose the best way for you among a wide variety of possibilities for learning SQL and remembering its syntax. What Is SQL? “SQL” stands for “Structured Query Language,” and as it sounds, it is a language dedicated to querying a relational database. In practice, it is used for creating, designing, and managing a relational database. People use SQL to: Create sets of tables and rows Modify database tables and index structures Insert, update, and delete data Retrieve information from a database for a variety of uses such as analytics Relational databases consist of a set of tables containing rows and columns of data.

Adrian Więch

Last-Minute Preparation Tips for a Database Class Exam

Getting to learn SQL is fun. You don’t really need to spend much time to understand some basic SQL concepts and use them fluently. If you’re a student facing your first database class exam soon, we’ve got you covered. In this article, we explain what you should focus on while learning SQL and studying for an entry-level database exam. Check your knowledge with our 10 sample questions and discover where you can find more SQL practice.

Tihomir Babic

How to Practice SQL Window Functions at Home

Are you looking for a way to maintain your knowledge of SQL window functions? What’s the best way to practice them at home? Here are some suggestions. Learning something new feels great, but it’s also arguably the easiest part of gaining knowledge. You’ve probably experienced that yourself. You struggle with learning an idea, and then you finally get it! There’s the feeling you’ve learned something. And then, very soon, you practically have to start all over again with the very same concepts.

LearnSQL.com Team

SQL Course of the Month – SQL Practice Set

It is said that practice makes perfect. I agree with this statement one hundred percent. What is applicable in basketball training, playing an instrument, or learning a foreign language is also useful in learning SQL. Practicing writing queries, using functions, and putting together clauses is the basis for learning the true power of SQL. But how and where do you practice SQL? I spoke with Agnieszka Kozubek-Krycuń, Chief Content Officer at Vertabelo about this.

Dorota Wdzięczna

Advanced SQL Courses for Data Analysts – A Complete Review

Even data analysts who already know SQL need to keep their skills sharp. Where can you find the best advanced SQL courses for data analysts? Check out our review of the top online sources! In this article, I present a list of online SQL courses for data analysts. These courses are offered by various platforms. Why wait? Let’s jump right in! 8 Advanced SQL Courses for Data Analysts Let's take a closer look at these courses to decide which platform will be better for you in learning SQL.

Arleta Więch

Top 3 Platforms to Learn SQL Online: A Complete Comparison

Do you want to learn SQL online? Where do you start? There are many choices on the internet, and it can be hard to decide. But don’t worry—I tested and compared three major platforms to help you find the best place to learn SQL online! E-learning is on the rise. It gives us infinite possibilities of growing our professional careers without leaving our homes. And increasing our competencies is especially important now that the labor market has become dynamic and unstable.

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! What Is SQL, and Why Should You Learn It? SQL is a language used to talk to databases, computer programs that hold data and can process it efficiently. SQL can select data from a database and perform various computations on the data, be they simple or complex.

Zahin Rahman

What is the Best SQL Training Online?

In today’s data-driven world, SQL is a highly sought-after skill, but it cannot be mastered merely over a fortnight. With so many resources at your disposal to learn SQL, where do you even consider beginning, and how do you practice SQL? Savvy and knowledgeable database professionals have consistently been in high demand over the last five years. If you are aiming to advance your career as a database developer, administrator, warehousing specialist, or analyst, SQL training and mastery is an absolute necessity.

Rebecca McKeown

50 Best Resources for Learning SQL

Do you want to know where to learn SQL? We’ve got you covered with the ultimate list of 50 resources for learning SQL, including the best SQL courses, tutorials, books, and much, much more! Learning SQL can be hard enough without wading through thousands of websites and articles. So, we thought we’d do you a solid and put the top SQL resources here in this handy slice of the internet.

Magdalena Wojtas

How to Practice SQL After a Video Course

When you're just starting to learn coding, the most obvious first step is to watch online video courses. They're one of the most popular ways to learn the basics of a new technology without investing a lot of time and money. But you need to do more than that to master the topic. What should be your next step? When someone asks me about how to start learning to code, I often recommend trying video tutorials first.

Kamil Bladoszewski

How to Rank Rows in SQL: A Complete Guide

Don’t struggle with SQL ranking functions anymore! This article will guide you through the most common ranking use cases. Rankings are used around us every day. Sports tournaments, the best movies and TV series on Netflix, stores with the cheapest products—these are only a few examples of rankings you might’ve seen recently. Using SQL RANK functions might be hard sometimes. The variety of different constructions is enormous. You can easily get lost in everything there is to learn about ranking.

Emil Drkušić

How to Practice SQL JOINs

There is no better way to learn SQL joins than through practice. However, there will probably be obstacles along the way. I’ll cover some of these obstacles and give ideas for how to overcome them. While this article won’t turn you into SQL JOINs expert, it will show you how to become one. So, let’s start! Challenges When Practicing SQL JOINs It’s hard to answer “How do you master SQL JOINs?

LearnSQL.com Team

Online Education in the Times of COVID-19

LearnSQL.com grants free access to their Interactive courses till 04/20/2020. People around the world are faced with a new challenge. A challenge which requires swift action and adaptability. Students and teachers, employers and employees, families and friends. Many have shown vigilance and decisiveness, while at the same time trying their best to maintain their everyday-life continuity. However, there are those who, due to the current circumstances, need to postpone plans and invest their resources in different areas.

LearnSQL.com Team

Stay at Home and Learn SQL for Free with LearnSQL.com

Working remotely is a dream come true for some. You ditch commuting and have more time for the people you love and the things you enjoy. For others, it's a challenge to maintain their focus when there are new distractions. It's also an opportunity to invest the few gained hours in learning something new. Staying at home can be a time when you might find yourself busier than you've ever been, but not getting many things done, and worse, not learning what you planned to.

Kate Stolarek

Video Tutorial or Interactive SQL Course – Which Is Better?

Are you ready to get started with SQL but unsure which learning method is the most effective? In this post, we’ll talk about the pros and cons of learning SQL from an instructional video vs. an interactive online course. Are you a chronic Internet-using student who’s planning to learn SQL? Maybe you did some research but still don’t know which kind of training is worth your (limited) time. We all have families, hobbies, and other after-work commitments, and finding the right resource for learning SQL will save you some time.

Zahin Rahman

The Top 7 Platforms with the Best SQL Courses for 2020

Are you struggling to narrow down which platforms are the best for learning SQL online? We have all been there. I know how confusing it can be when choosing amongst the hundreds of resources available. Find out below which platforms offer the most enriching and seamless SQL learning experiences online. In this article, I will review the platforms with the best online SQL courses offered this year. Whether you are a student looking for your first job, a professional hoping to transition to a data analysis, or an experienced data practitioner, there are plenty of great opportunities to learn SQL online at various levels of technical ability.

Rebecca McKeown

Learning SQL? 12 Ways to Practice SQL Online

If you’re currently learning SQL, you may have found yourself knee-deep in reading material and may be wondering how on earth you can bridge the gap between book knowledge and real-life SQL application. In this article, we bring you 12 of the most effective ways to practice SQL online, taking you from a bookworm to a database butterfly in no time at all! All theory and no practice will make you a frustrated SQL user!