1 Jun 2025 LearnSQL.com Team New Monthly SQL Practice for June 2025! Are you a SQL beginner that needs some interactive exercises to practice writing queries? Take up the challenge in our June SQL Practice course! In our June 2025 SQL Practice, you’ll meet Damiano – a young entrepreneur who wants to kick-start his car rental business. He needs you to help him gather the right data and statistics on his company’s performance. Can you use your SQL skills to help him find the data? Read more 30 Apr 2025 LearnSQL.com Team New Monthly SQL Practice for May 2025! Ready for our new SQL challenge? This time, we have prepared some slightly more difficult SQL tasks. Here’s the May’s SQL Practice course! This time, you will be helping Tiffany, the owner of an online course website. She’d like to analyze her business data – it’s the perfect opportunity to use your SQL skills. Can you find the average number of students enrolled in a course? Calculate the average number of total hours spent by all students on a course? Read more 22 Apr 2025 LearnSQL.com Team The Most Useless SQL Queries (and What you Should do Instead) They run. They return data. But they’re pointless. Here’s what not to write in SQL – and what to do instead. Some SQL queries run just fine – but that doesn’t mean they’re doing anything useful. In this article, we’ll walk through real examples of SQL queries that are valid, harmless-looking, and completely pointless. They waste resources, hide insights, or just add noise. For each one, you’ll see what’s wrong, and how to write a smarter alternative instead. Read more 8 Apr 2025 LearnSQL.com Team Top 9 Free SQL Practice Resources Want to sharpen your SQL skills without spending a dime? Here’s a list of the best free SQL practice resources to help you write queries, solve real-world problems, and improve your database expertise – for beginners and advanced users. Learning SQL is essential for anyone working with data, but practicing it effectively can be a challenge – especially if you don’t have access to a database. Fortunately, there are plenty of free SQL practice resources that let you write and test queries in interactive environments, tackle real-world datasets, and even prepare for technical interviews. Read more 31 Mar 2025 LearnSQL.com Team New Monthly SQL Practice for April 2025! Are you a SQL beginner that needs some interactive exercises to practice writing queries? Take up the challenge and choose our April SQL Practice course! In our April 2025 SQL Practice, you’ll meet Olivia, the owner of a hairdressing salon. She needs you to help her gather statistics on the services offered by her salon, the salon customers, their appointments, etc. Can you use your SQL skills to help her find the data? Read more 27 Mar 2025 LearnSQL.com Team SQL Project: Personal Reddit Recap Does your Reddit Recap seem too short and meaningless? With the power of SQL, you can extract much deeper insight from your usage data! Find out how to build this interesting SQL project below. Making a personal SQL project is a great way to practice your database building and querying skills, and it can also be a nice addition to your portfolio. In this article, we will cover the ways to extract the most from your Reddit data and uncover insights about your Reddit activity. Read more 18 Mar 2025 LearnSQL.com Team Full Solution to Lost at SQL – Learn SQL Game A game is a fun way to learn SQL. Let’s take a look at a full solution to one of the most popular SQL games, Robin Lord’s Lost at SQL! SQL games are a great interactive way to practice your SQL skills. If you are bored with video courses and textbooks, a game can help you solidify and even learn SQL. Lost at SQL is one of the most popular SQL games. Read more 4 Mar 2025 LearnSQL.com Team LeetCode SQL Problem & Solution: Department Top Three Salaries Looking for a detailed explanation of the hardest exercise in the LeetCode SQL 50? We have compiled a detailed explanation of this SQL problem, with the thought process behind the solution and instructions on how to build the query step-by-step. LeetCode is a popular online platform that offers a variety of SQL problems designed to help you learn, practice, and prepare for interviews. They also offer programming problems in other languages. Read more 27 Feb 2025 LearnSQL.com Team New Monthly SQL Practice for March 2025! If you are a more advanced SQL user who is comfortable using CASE WHEN, GROUP BY, aggregate functions, and common table expressions (CTEs), you can check your knowledge with the March SQL Practice. On LearnSQL.com, you‘ll find a new challenge to solve every month. Maybe this is the first time you’ve come across our Monthly SQL Practices. LearnSQL.com offers one SQL Practice each month: at the basic level on even-numbered months and at the advanced level on odd-numbered months. Read more 31 Jan 2025 LearnSQL.com Team New Monthly SQL Practice for February 2025! Ready for a new basic SQL challenge? This time, you will help Arthur Hart, the director of a local clinic, gain important insight into its operations. Get ready to dive into the world of SQL queries as you help the clinic enhance the patient experience. Welcome to the February SQL Practice course! In our February 2025 SQL Practice, you will help Arthur Hart, the director of a local clinic, gain insight into the clinic’s operations. Read more «« « 1 2 3 … 7 » »»