11 Feb 2026 LearnSQL.com Team The Perfect Match: SQL Joins Explained Not every invitation leads to a perfect match — and the same is true in SQL. This article explains SQL JOINs using a party guest list example, helping you understand how different JOIN types decide which records appear in the result. February is the month of love. Dating apps talk about matches, invitations go out for Valentine’s events, and everyone hopes things line up the right way. In SQL, we deal with matching all the time — just in a more practical way. Read more 4 Feb 2026 LearnSQL.com Team Building a Custom 'Recommendation Engine' in 10 Lines of SQL Recommendation engines don’t always start with AI or machine learning. In many cases, a few well-written SQL queries are enough to uncover products that customers frequently buy together. In this article, you’ll build a simple recommendation engine in about 10 lines of SQL using self-joins and aggregation. When you hear “recommendation engine,” you probably think of machine learning, Python notebooks, and complex AI models. That association has become so common that we often forget how many recommendations in real systems are built on much simpler foundations. Read more 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. Read more 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. Read more 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. Read more 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. Read more 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 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 «« « 1 2 3 … 9 » »»