Articles Cookbook
21 Jan 2026
Scott Davis

7 SQL Metric Patterns from Real-Life Interviews

After going through multiple SQL interviews for data analyst roles, I noticed the same metric questions appearing repeatedly. This article breaks them down into seven patterns and shows how to recognize them quickly in interviews. Throughout the period between November 2023 and April 2025, I interviewed for multiple data analyst roles and started noticing a clear pattern in SQL interview questions. While the datasets and business contexts changed, the types of metrics interviewers asked about were often the same.
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13 Jan 2026
LearnSQL.com Team

Window Functions Starter Pack for 2026: Learn One Advanced Skill per Week in January

Window functions are one of the most practical SQL skills you can learn if you already know the basics and want to analyze data more effectively. They help you compare rows, build rankings, and track changes over time without complex subqueries. In this starter pack, you’ll learn one window function skill per week in January and turn an advanced topic into a usable, everyday SQL tool. Window functions are one of those SQL topics that often get labeled as “advanced” and then quietly postponed.
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7 Jan 2026
LearnSQL.com Team

Learn SQL in 2026: A Practical Beginner Roadmap for the New Year

SQL won’t go out of style in 2026 – and that’s exactly why it’s worth learning now. While tools come and go, SQL remains the backbone of analytics, business data, and modern automation. This practical roadmap shows how to learn SQL from scratch, course by course, without overwhelm or wasted effort. Why 2026 Is a Good Year to Start Learning SQL SQL continues to be one of the most reliable and practical skills you can learn.
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1 Jan 2026
Jakub Romanowski

Free Course of the Month: SQL Subqueries: Real-World Exercises For All Levels

Want to improve your SQL skills? Our free course, SQL Subqueries: Real-World Exercises for All Levels, will teach you subqueries—an essential tool in SQL. Subqueries help with advanced data analysis and problem-solving, and we've made getting started simple. Subqueries are like SQL's secret weapon—they let you embed one query's result inside another. Instead of writing multiple queries and connecting the dots manually, a subquery nests the data seamlessly, making your code faster, cleaner, and easier to understand.
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31 Dec 2025
LearnSQL.com Team

SQL Certifications and Courses Worth Taking in 2026

SQL skills age well. Even with AI writing snippets of code, someone must still understand data, ask the right questions, and turn results into decisions. Here’s a clear look at which SQL courses and certifications are genuinely worth taking in 2026. Whether you’re starting your data journey or planning to level up your analytical skills this year, SQL is still one of the most valuable skills to invest in. It’s the language behind dashboards, reports, automations, AI-assisted insights, and almost every data-driven decision happening in business today.
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24 Dec 2025
LearnSQL.com Team

How to Keep Up Your SQL Learning Habit During the Holidays

Learning SQL during the holidays can feel stressful, especially if you’re preparing for a job change and worry that any break will set you back. The good news is that you don’t need long study sessions or perfect consistency. A lighter approach is enough to keep your SQL habit alive until January. For many people learning SQL, the goal is clear: find a new job, switch careers, or finally move into a more data-focused role.
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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.
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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.
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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!
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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.
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