Articles Cookbook
16 Dec 2025
LearnSQL.com Team

SQL Practice Challenge: One Query a Day During the Holidays

December is busy, which makes long study sessions unrealistic. This holiday SQL challenge focuses on one simple habit: one SQL query a day, with different LearnSQL.com course options for beginners, intermediate learners, and advanced users. December is rarely a quiet month. End-of-year deadlines, family plans, travel, and a long list of “I’ll do it in January” tasks tend to push learning aside. That’s exactly why this is a good time to try a different approach.
Read more
3 Dec 2025
LearnSQL.com Team

From SELECT to JOIN: A 7-Day SQL Practice Plan for December

December is chaotic, loud, and full of excuses not to learn anything. But with one quick diagnostic and a single course you actually enjoy, you can still make real SQL progress before the year wraps up. December is intense. You’re juggling year-end tasks, holiday prep, shopping, cleaning, family logistics, and maybe even looking for a new job because your current one (the second one this year) is falling apart.
Read more
1 Dec 2025
Jakub Romanowski

Course of the Month: SQL Practice – A Store

This December, seize the opportunity to learn and practice SQL for free with our Basic SQL Practice: A Store course. Designed for an interactive and hands-on learning experience, this course starts with SQL basics and guides you through crafting queries that underpin business intelligence. Ready to get a grip on the fundamentals of SQL and dive into practical database management? Our December Course of the Month, Basic SQL Practice: A Store, is your perfect match!
Read more
27 Nov 2025
LearnSQL.com Team

How to Read Other People’s SQL Queries Without Getting Lost

Opening someone else’s SQL can feel confusing fast. One look at the JOINs, aliases, and filters, and you’re lost. Here’s how to break down any query step by step and make sense of it. Reading your own SQL is one thing. Reading someone else’s 200-line query that powers a key dashboard is something else entirely. This article will show you how to approach other people’s SQL step by step, so you can understand what it does, spot problems, and feel confident making changes.
Read more
19 Nov 2025
LearnSQL.com Team

SQL in 10 Minutes a Day: The Busy Analyst’s Secret Weapon

Think you’re too busy to learn SQL? With LearnSQL.com, all it takes is ten minutes a day to sharpen your data skills, one short, interactive lesson at a time. You open your laptop, check your calendar, and it’s already packed — meetings, reports, and endless deadlines. There’s barely time to breathe, let alone to sit down and learn something new. For many analysts, improving SQL skills feels like a luxury reserved for slower days that never come.
Read more
12 Nov 2025
Agnieszka Kozubek-Krycuń

5 SQL Lessons to Learn Before the Year Ends

Many SQL learners get stuck between beginner and intermediate — queries work, but not always as expected. These five lessons fix the gaps most learners still have and will strengthen your SQL before the year ends. As the year winds down, many learners start reflecting on what they’ve achieved — and what’s still on their to-learn list. If you’ve been studying SQL for a while, you’ve probably already written a few queries, joined some tables, and filtered results.
Read more
5 Nov 2025
Agnieszka Kozubek-Krycuń

Level Up Your Queries: 7 Intermediate SQL Tricks Every Analyst Should Know

SQL mastery doesn’t stop at writing simple queries — it begins when you start transforming data into insights. Learn seven intermediate SQL tricks every analyst should know to analyze smarter, work faster, and uncover patterns your basic queries can’t show. If you already know your way around SELECT, JOIN, and WHERE, it’s time to step up your game. SQL doesn’t end at SELECT — if you want to become a professional data analyst, you need to go beyond the basics and start thinking like someone who turns data into answers.
Read more
1 Nov 2025
Jakub Romanowski

Course of the Month: Customer Behavior in PostgreSQL

Ever wondered how top businesses understand their customers so well? The secret lies in data analysis, and we're offering you the key – for free – in our Customer Behavior Analysis in PostgreSQL course! Are you familiar with the basics of PostgreSQL and eager to delve deeper into customer behavior analysis? Our November 2025 Course of the Month, Customer Behavior Analysis in PostgreSQL, has you covered! And the best part?
Read more
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.
Read more
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.
Read more