Articles Cookbook
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.
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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.
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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.
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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?
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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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