Articles Cookbook
1 Apr 2025
Jakub Romanowski

Course of the Month: Revenue Trend Analysis in PostgreSQL

Updated on: April 1, 2025 Need to understand what your data is saying about your business? In April 2025, 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.
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1 Apr 2025
Jakub Romanowski

Why Learning SQL Beats Relying on AI: Understanding Data Still Matters

SQL is a fundamental skill for working with data. While AI tools can assist in query generation and automation, they cannot replace the need for human understanding of database structures, query optimization, and data integrity. Knowing SQL ensures better control over your data and helps you make informed decisions. In this article, I will explain why SQL remains an essential skill, even in the AI era. Artificial Intelligence (AI) can generate SQL queries, automate processes, and assist in data management.
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31 Mar 2025
LearnSQL.com Team

New Monthly SQL Practice for April 2025!

Are you a SQL beginner that needs some interactive exercises to practice writing queries? Take up the challenge and choose our April SQL Practice course! In our April 2025 SQL Practice, you’ll meet Olivia, the owner of a hairdressing salon. She needs you to help her gather statistics on the services offered by her salon, the salon customers, their appointments, etc. Can you use your SQL skills to help her find the data?
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27 Mar 2025
LearnSQL.com Team

SQL Project: Personal Reddit Recap

Does your Reddit Recap seem too short and meaningless? With the power of SQL, you can extract much deeper insight from your usage data! Find out how to build this interesting SQL project below. Making a personal SQL project is a great way to practice your database building and querying skills, and it can also be a nice addition to your portfolio. In this article, we will cover the ways to extract the most from your Reddit data and uncover insights about your Reddit activity.
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25 Mar 2025
Jakub Romanowski

What do our Users Think About the SQL Basics Course?

Learning the basics of SQL is honestly one of the best decisions you can make right now. Think about how many industries rely on data – marketing, finance, tech, and even healthcare. In this article, I’ll show you why the SQL Basics course at LearnSQL.com is so popular and how it’s helped over 350,000 people level up their SQL skills. This awesome and interactive course has everything you need to get started.
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20 Mar 2025
Valentyn Kucherenko

SQL 101: a Beginner’s Guide to SQL Database Programming

In this article, I will introduce you to the concept of SQL and give you the very first lesson about how SQL can help you navigate the world of relational databases with speed and precision. This SQL 101 is designed to make your learning smooth, offering clear explanations and practical examples to help you build a solid foundation in SQL. Data is part of almost everything you do. Whether you’re shopping online, checking your bank balance, or booking an Uber ride, databases store and manage the information behind the scenes.
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18 Mar 2025
LearnSQL.com Team

Full Solution to Lost at SQL – Learn SQL Game

A game is a fun way to learn SQL. Let’s take a look at a full solution to one of the most popular SQL games, Robin Lord’s Lost at SQL! SQL games are a great interactive way to practice your SQL skills. If you are bored with video courses and textbooks, a game can help you solidify and even learn SQL. Lost at SQL is one of the most popular SQL games.
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13 Mar 2025
Jakub Romanowski

How to Transition From Excel to SQL: A Data Analyst's Perspective

If you work with data, chances are you’ve spent countless hours in Excel – filtering data, writing formulas, and dragging cells across columns. Excel is a great tool but, at some point, it starts to slow you down. Huge files crash. VLOOKUPs become a nightmare. PivotTable takes forever to update. That’s when SQL comes in. It’s like Excel’s powerful, more scalable sibling. And the best part? If you know Excel, you already understand many SQL concepts.
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11 Mar 2025
Valentyn Kucherenko

Who is a Marketing Analyst and how do you Become one?

If you’re looking to combine marketing expertise with data analysis, becoming a marketing analyst is the perfect career path. This exciting role primarily focuses on measuring campaign success, tracking customer behavior, and helping businesses make smarter decisions. In this article, I will share all you need to know to become a marketing analyst. What is Marketing Analytics Marketing isn’t just about creativity anymore. Sure, great copy and eye-catching visuals still matter, but data is what drives real decision-making.
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6 Mar 2025
Agnieszka Kozubek-Krycuń

What are the Differences Between Database Engines? An Overview for Beginners

If SQL is a standard language, why do databases like MySQL, SQL Server, Oracle, and PostgreSQL all exist? Do their differences matter? This article explains what sets them apart and why it’s useful to know – even if you’re not a database expert. My husband is a software tester. Occasionally, he uses SQL to pull data from a database – like checking if a user with access to three open projects sees the correct list, or modifying data for testing purposes.
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