Articles Cookbook
12 Feb 2025
Valentyn Kucherenko

Top 10 Industries Hiring SQL Experts in 2025

In the era of AI and advanced technologies, it might seem surprising that a straightforward querying language like SQL remains so widely used. Yet, the simplicity and efficiency of SQL make it indispensable for data analysis. More and more industries are hiring SQL experts to manage and interpret growing volumes of data. Here are the top 10 industries to look out for as an SQL expert in 2025. While some of these industries are rather obvious, there are others that even I found surprising during my research.
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11 Feb 2025
Agnieszka Kozubek-Krycuń

Typical Usage of GROUP BY

The GROUP BY clause helps you summarize data by grouping rows with similar values. In this guide, we’ll show you how it works with simple examples. GROUP BY is an SQL clause that organizes data into groups based on one or more columns, so you can summarize data by calculating things like totals, averages, or counts for each group. To learn more about using GROUP BY in practice, try our interactive SQL Basics course with 129 hands-on practical exercises to help you master the basics of SQL, including GROUP BY .
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6 Feb 2025
Ekre Ceannmor

SQL Query Syntax

Looking for a quick overview of SQL query syntax? In this article, we will discuss the building blocks of a simple SQL query. Are you starting to learn SQL and wondering about the proper way to structure an SQL query? In this article, we will discuss what a query is and what is the proper way to construct one. We’ll also include some helpful examples. Ready? Let’s get started with a very basic question:
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4 Feb 2025
Jakub Romanowski

How SQL can Make Your Life as an Accountant Easier

SQL for accountants is a powerful tool that takes your work beyond the limits of Excel. If you’ve ever faced a giant spreadsheet that refuses to load or spent hours on repetitive tasks, SQL can make your life so much easier. Let’s be real: Excel is great, but there comes a point when it’s just not enough. If you’ve ever stared at a giant spreadsheet that takes forever to load, you’ll know what I mean.
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3 Feb 2025
Jakub Romanowski

Free Course of the Month: Customer Behavior in MySQL

Have you ever wondered how businesses really get to know their customers? It’s all about analyzing behavior and, if you’re working with MySQL, there’s an awesome free course on LearnSQL.com that shows you how to do just that. Let me tell you all about it! If you’ve got the basics of MySQL down and want to dig into customer behavior analysis, you’re in luck! LearnSQL.com has a free course this month just for you—Customer Behavior Analysis in MySQL.
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31 Jan 2025
LearnSQL.com Team

New Monthly SQL Practice for February 2025!

Ready for a new basic SQL challenge? This time, you will help Arthur Hart, the director of a local clinic, gain important insight into its operations. Get ready to dive into the world of SQL queries as you help the clinic enhance the patient experience. Welcome to the February SQL Practice course! In our February 2025 SQL Practice, you will help Arthur Hart, the director of a local clinic, gain insight into the clinic’s operations.
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30 Jan 2025
Jakub Romanowski

A Day in The Life of a Data-Driven Marketer Who Uses SQL

If you’re in marketing and want to supercharge your campaigns, understanding SQL is a game-changer. It’s not just for techies—marketers can use SQL to pull detailed data, analyze performance, and make smarter decisions. Plus, SQL makes working with databases a breeze, helping you target the right audience and optimize your strategies. Marketing and databases might not seem like they go together, right? But let me tell you, they make a killer combo.
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28 Jan 2025
Ekre Ceannmor

10 NULL Exercises for Beginners

Looking to practice handing NULL values in your queries? Check out these 10 new NULL practice exercises! Mastering SQL requires a lot of practice. While learning theory is important, hands-on practice is one of the best ways to keep your SQL skills up to date. In this article, we present 10 NULL exercises for you to analyze, complete with solutions and explanations. Dealing with NULLs can catch SQL beginners off guard.
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23 Jan 2025
Maria Durkin

Charting with SQL: A Guide For Beginners

SQL, often known as Structured Query Language, is a valuable tool for data analysts. It enables you to query, update, and organize your data. This is a critical precondition for making charts. In this article, we’ll explore how to prepare data with SQL for use in data visualizations. Raw data is only valuable if you know how to clean and organize it. Thus, properly preparing data for charts is an important step in making captivating and informative graphs.
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23 Jan 2025
Marek Pankowski

Common SQL Job Interview Questions

Congratulations! Your SQL skills were strong enough to get you that job interview! Now, if you only knew what SQL questions and practical exercises a recruiter might ask you to do… This article is meant as a SQL practice for interviews. I’ll help you prepare for the SQL and database aspects of your job interview. Knowing SQL opens up opportunities in and out of IT, as this query language is used practically everywhere.
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