Articles Cookbook
31 Oct 2025
LearnSQL.com Team

New Monthly SQL Practice for November 2025!

You’re an SQL specialist helping Daisy, who is running a jewelry store. Daisy would like to gather some data that will help her expand the business. Can you find the number of purchases made by each customer? How much do the customers usually spend on a single purchase? The answers are hidden in the database – you just need to figure out how to get them out! This SQL Practice is at an advanced level and focuses on advanced GROUP BY queries.
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29 Oct 2025
LearnSQL.com Team

How to Read an SQL Error Message (Without Panicking)

SQL errors aren’t scary once you know what they mean. This guide shows how to read them calmly and fix your queries without panic. You hit Run. And then—bam! The console flashes red. ERROR: syntax error at or near "FROM" This is scarier than any jump scare. If you’ve ever stared at a cryptic SQL error message and felt your heart race, you’re not alone. Every SQL learner faces this moment.
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22 Oct 2025
Agnieszka Kozubek-Krycuń

Your Year in Data: How SQL Helps You Summarize 12 Months of Information

Ever wanted to analyze your own year like Spotify Wrapped does? With a few SQL queries, you can turn your workout data — or any dataset — into a personal year-in-review. How was your year? How much did you spend? What kind of music did you listen to the most? How many workouts did you complete — or how many movies did you watch? All of that information already exists in your digital life.
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15 Oct 2025
LearnSQL.com Team

The SQL Time Machine: How Queries Unlock the Past (and Predict the Future)

SQL isn't just for retrieving data—it's a powerful way to explore what happened and when. Whether you're tracking user signups, sales, or system activity, learning how to work with time-based data helps you uncover patterns, analyze trends, and make smarter decisions. This beginner-friendly guide shows how to sort, filter, and group your data to understand the past—and prepare for what’s next. Every dataset has a story—and time is often the main character.
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8 Oct 2025
Agnieszka Kozubek-Krycuń

5 Tiny SQL Tricks That Make You Look Like a Pro

Want your SQL to look cleaner and feel more professional? These five small but powerful tricks will help you write queries that are easier to read, debug, and share. You’ve written a few SQL queries, joined some tables, maybe even built a small report. But your queries still feel a bit… clunky. The truth is, the difference between “getting the job done” and looking like a pro often comes down to a handful of small habits — the kind that make your code easier to read, maintain, and share with others.
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1 Oct 2025
Jakub Romanowski

Free Course of the Month: Blog & Traffic Data

Why practice SQL with real-life scenarios? We'll explain in this article – and we’ll show how you can do it for free during October 2025 with this LearnSQL.com course! SQL is the backbone of many data-driven applications and businesses. It's a powerful language that allows you to interact with databases, retrieve data, and make insightful decisions. If you're looking to improve your SQL skills, our Basic SQL Practice: Blog & Traffic Data course is the perfect opportunity.
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1 Oct 2025
Agnieszka Kozubek-Krycuń

SQL Study Plan for the Last 90 Days of the Year

The last three months of the year are the perfect time to focus on yourself and build skills that will pay off in the new year. With the right plan, you can go from SQL basics to job-ready queries by December 31. This 90-day study path shows you exactly what to learn — and when — using LearnSQL.com courses. The final months of the year are a natural moment to reset and prepare for what’s ahead.
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30 Sep 2025
LearnSQL.com Team

New Monthly SQL Practice for October 2025!

In our October 2025 SQL Practice, you’ll meet Elisabeth, the manager of a music club. She needs you to help her gather the right statistics about the events organized in the club. Can you use your SQL skills to help her find the data? It shouldn’t be too hard if you have finished our SQL Basics course or understand core SQL concepts such as SELECT, WHERE, GROUP BY, HAVING, ORDER BY, and aggregate functions.
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22 Sep 2025
LearnSQL.com Team

SQL Pop Culture Datasets: Practice With Movies, Music, and Sports

Why settle for invoices and order tables when you could be querying Oscars, Spotify hits, or NBA stats? Pop culture datasets make SQL practice fun, engaging, and surprisingly effective. Have you ever wanted to use SQL to figure out which actor has the most Oscar wins, which artist ruled the charts in the year you graduated, or which country tops the Olympic medal table? Good news: you can. Most beginners learn SQL by analyzing customers, orders, and invoices.
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17 Sep 2025
Agnieszka Kozubek-Krycuń

The SQL Checklist for Junior Data Analysts in 2025

SQL is the backbone of data analysis, and every junior analyst in 2025 needs to know it well. This checklist will help you see where you stand, spot the skills you still need, and find the right resources to level up. Whether you’re just starting or preparing for your next interview, you’ll know exactly what to focus on. Starting out as a data analyst can feel overwhelming. There’s so much to learn — tools, dashboards, business metrics — but at the center of it all is SQL.
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