Articles Cookbook
6 May 2020
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! If you're like me, constantly looking to keep those SQL skills in tip-top shape, you might be wondering where to find the best advanced courses tailored for data analysts. Well, I've got you covered! I recently explored some top-tier online courses that really push the envelope on what you can do with Structured Query Language.
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5 May 2020
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.
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1 May 2020
Rebecca McKeown

How to Practice SQL for a Technical Job Interview

You’ve scored yourself an interview for an SQL-related job. Nice work! But perhaps uncertainty is creeping in as your interview date looms closer. Do you know enough SQL to make the cut? What questions are you likely to be asked? What SQL practice should you be doing before your interview? Almost all SQL job candidates go through exactly the same nerve-wracking process. Here at LearnSQL.com, we have the lowdown on all the SQL practice and preparation you’ll need to ace those interview questions and take your career to the next level.
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30 Apr 2020
Kateryna Koidan

Is SQL a Programming Language?

SQL is a language for communicating with databases. When you write SQL queries, you give instructions to the computer and it performs these instructions—it sounds like programming. However, you cannot build an application with SQL as you can with Python or Java. So, is SQL a programming language? SQL is used to communicate with databases. It allows you to find information, update or delete data, or create and modify the structure of a database.
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29 Apr 2020
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.
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29 Apr 2020
LearnSQL.com Team

SQL Window Functions Cheat Sheet

Unlock the full potential of SQL with our comprehensive Window Functions Cheat Sheet! This indispensable guide is designed to elevate your analytics capabilities and make complex data manipulations effortlessly accessible. Welcome to the ultimate resource for mastering SQL window functions - the SQL Window Functions Cheat Sheet! This invaluable resource provides you with the essential syntax, a comprehensive list of window functions, and real-life examples to enhance your SQL skills and analytics capabilities.
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28 Apr 2020
Dorota Wdzięczna

What Is a Running Total and How Do You Compute It in SQL?

The SQL running total is a very common pattern, used frequently in finance and in trend analysis. In this article, you’ll learn what a running total is and how to write a SQL query to compute it. The best way to learn SQL is through practice. LearnSQL.com offers over 70 interactive SQL courses at various level of difficulty. Each course is interactive: there is a little bit of reading, followed by an exercise to practice what you've just read.
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23 Apr 2020
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 still 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.
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22 Apr 2020
Tihomir Babic

When Do I Use SQL Window Functions?

Have you heard one of your colleagues bragging about using SQL window functions? Do you know basic SQL but not much, or anything, about window functions? If you want to learn about window functions and how to use them in a business context, you’re in the right place! This happens often. You reach a certain level of knowledge, and you feel like the king (or queen) of the world.
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21 Apr 2020
Kamil Bladoszewski

How to Join 3 Tables (or More) in SQL

Using JOIN in SQL doesn’t mean you can only join two tables. You can join 3, 4, or even more! The possibilities are limitless. The best way to practice SQL JOINs is LearnSQL.com's interactive SQL JOINs course. It contains over 90 hands-on exercises that let you refresh your SQL JOINs knowledge. It covers a wide range of topics from simple 2-table JOINs, through joining multiple tables and using OUTER JOINs, to joining a table with itself.
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