Articles Cookbook
3 Jul 2025
Agnieszka Kozubek-Krycuń

Beach Reads for Data Nerds: Top SQL Resources for Summer 2025

Sunscreen? Check. Sunglasses? Check. A data book that’s actually fun to read? Absolutely. This summer, we’re rounding up the most interesting SQL and data-themed books to keep your brain challenged – even while you’re off the clock. Sure, you could pack a murder mystery or a romance novel for your summer break – but if you’d rather kick back with something that sharpens your data brain, this guide is just what you need.
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1 Jul 2025
LearnSQL.com Team

New Monthly SQL Practice for July 2025!

Ready for our new SQL challenge? This time, we have prepared slightly more difficult SQL tasks. Here’s July’s SQL Practice course! This time, you will help Ruby. She is the creator of a language tandem app, that is, a chat application in which learners can find native speakers for practicing languages. Ruby would like to gather data to help expand her business, and she has hired you as an SQL specialist to help her out.
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1 Jul 2025
Jakub Romanowski

Course of the Month: JOINs in PostgreSQL

Updated on: July 1, 2025 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 2025, 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.
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26 Jun 2025
Agnieszka Kozubek-Krycuń

SQL Crash Course: Learn SQL in One Sitting

Ready to dive into SQL? In just one sitting, you’ll learn the essential SQL queries to start working with databases, from selecting and filtering data to sorting results. Got an hour? That’s all you need to start writing real SQL queries. In this crash course, we’ll cover the essential basics: selecting data, filtering results, and sorting. These are the building blocks for working with databases, and by the end, you'll be able to run your first queries with confidence.
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24 Jun 2025
Jakub Romanowski

How to Get an SQL Job With No Experience

So you want an SQL job—but you’ve got zero experience? You’re not alone. We’ve all been there. The good news? You don’t need a computer science degree or years in tech to break into data work. With the right steps, a little persistence, and a smart plan, you can land your first role. In this guide, I’ll walk you through the entire process of getting your first SQL job—no prior experience required.
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19 Jun 2025
Agnieszka Kozubek-Krycuń

SQL Game Night: Play Guess the Output!

Think you know SQL? Put your skills to the test with a fun and fast-paced game where you guess the output of real SQL queries — no pressure, just play! Tired of traditional SQL tutorials? Start with the interactive SQL Basicscourse  to build a solid foundation — then put your skills to the test with SQL Game Night: Play Guess the Output! 🎯 It’s a fast, fun challenge that asks just one question:
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17 Jun 2025
Jakub Romanowski

What Makes Learning SQL Difficult for Beginners?

In this article, I will explore why SQL is hard to learn for many beginners and what you can do to make it easier. From confusing JOINs to unclear error messages, we’ll go over the most common struggles and how to overcome them using practical examples and beginner-friendly tips. So, you sat down to learn SQL. It looked straightforward at first. A few SELECT statements, maybe a WHERE clause or two.
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12 Jun 2025
Agnieszka Kozubek-Krycuń

How to Group by Week in PostgreSQL

Need to analyze data by week in PostgreSQL? Here's how to group your records using built-in date functions for clear, time-based insights. Grouping data by week is a common requirement in reporting. It’s often used in business reporting to track metrics like weekly revenue, user signups, or website traffic. Grouping by week helps smooth out daily fluctuations and gives you a clearer view of trends over time. It's especially helpful when comparing performance across consistent time intervals, like "
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10 Jun 2025
Jakub Romanowski

How to Write SQL Queries Anyone Can Understand

Writing SQL that works is one thing. Writing SQL that someone else can read and say, "Oh, I get it!" is a whole different level. And honestly? It's one of the most useful things you can learn if you work with data. Whether you're building reports, analyzing customer behavior, or answering a quick question from your boss, you’ll probably use SQL. And if that SQL is messy or confusing, you'll slow everyone down – including yourself.
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5 Jun 2025
Agnieszka Kozubek-Krycuń

SQL Queries You'll Actually Use in Real Life

Learn the essential SQL queries that data analysts, marketers, and product teams rely on every day – with simple, relatable examples. When you're just starting with SQL, it's easy to get overwhelmed by syntax and theory. But here’s the truth: most professionals – whether they’re data analysts, marketers, or product managers – use a small set of SQL queries over and over to get real work done. You don’t need to learn everything at once.
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