SQL practice is a key step in mastering the language and becoming proficient in writing queries. Consistent practice helps you build confidence and apply SQL effectively to solve real-world data challenges. Below is a collection of articles designed to help you enhance your SQL skills. These resources include a variety of guides, tips, and hands-on exercises covering everything from fundamental queries to advanced topics. They offer the perfect opportunity to strengthen your SQL knowledge through practical application. 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 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 24 Feb 2025 Jakub Romanowski The Most Common PostgreSQL Commands: a Beginner's Guide PostgreSQL is more than just a database – it’s the trusted tool behind some of the most demanding data projects out there. From analyzing sales trends to powering apps with real-time data, PostgreSQL commands let you take control of your data with precision and speed. In this article, I’ll walk you through the most common PostgreSQL commands that beginners need to know. Did you know that PostgreSQL is one of the most loved databases out there? Read more 4 Feb 2025 Jakub Romanowski How SQL can Make Your Life as an Accountant Easier SQL for accountants is a powerful tool that takes your work beyond the limits of Excel. If you’ve ever faced a giant spreadsheet that refuses to load or spent hours on repetitive tasks, SQL can make your life so much easier. Let’s be real: Excel is great, but there comes a point when it’s just not enough. If you’ve ever stared at a giant spreadsheet that takes forever to load, you’ll know what I mean. Read more 28 Jan 2025 Ekre Ceannmor 10 NULL Exercises for Beginners Looking to practice handing NULL values in your queries? Check out these 10 new NULL practice exercises! Mastering SQL requires a lot of practice. While learning theory is important, hands-on practice is one of the best ways to keep your SQL skills up to date. In this article, we present 10 NULL exercises for you to analyze, complete with solutions and explanations. Dealing with NULLs can catch SQL beginners off guard. Read more 21 Jan 2025 Ekre Ceannmor SQL Code Project Examples Want to practice SQL and add projects to your portfolio? This article covers 10 beginner-friendly project ideas, complete with detailed steps and data sources to help you get started. Building an SQL project is a great way to practice your querying skills and is a great addition to your portfolio if you are a beginner. In this article, we will go through 10 ideas for SQL code projects that are suitable for beginners. Read more 13 Dec 2024 Ekre Ceannmor SQL Quiz Want to quickly check your SQL skills? Take this short quiz and get immediate results, together with advice on your future learning path! Want to quickly check your SQL skills? Our SQL Quiz is tailored just for you! It's a great way to verify your current knowledge and identify areas for improvement. If you want a more thorough test for your skills – including advanced topics like reports, window functions and much more – check out our free SQL Skill Assessment. Read more 11 Dec 2024 Jakub Romanowski Netflix Wrapped With SQL: Let’s Dive Into Your Streaming Year In this article, we’re turning your Netflix viewing history into your very own Netflix Wrapped, using SQL. Ever wondered what show you binged the hardest or which day you couldn’t resist pressing play? I’ll show you how to pull all those fun insights. Let’s dig in! Hey! The year’s almost over, so why not take a fun look back at your Netflix habits? Remember all those weekends you said you’d " Read more 10 Dec 2024 Jakub Romanowski Make Your Own Spotify Wrapped With SQL (Because Why Not?) Everybody’s showing off their Spotify Wrapped on social media, but what if you could make your own and see everything Spotify leaves out? With a bit of SQL, you can dig into your listening habits, see your true top tracks, and even find out how much time you spent looping that guilty pleasure song. It’s easy, fun, and a great way to flex your SQL skills. In this article I will show you how. Read more 4 Dec 2024 Maria Durkin SQL Exercises for Northwind Database When it comes to learning SQL, many beginners struggle to gain practical experience that can eventually translate to real-world scenarios. We'll tackle this challenge by presenting Northwind database SQL exercises with solutions and explanations. In this article, we’ll cover 16 Northwind exercises taken from our SQL practice course Basic SQL Practice: A Store. As you might have guessed, the course uses Microsoft’s classic Northwind database. It’s a small trading company database that’s designed to give SQL learners some practical experience. Read more 2 Dec 2024 Jakub Romanowski Course of the Month: SQL Practice – A Store Updated on: December 2, 2024 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 29 Oct 2024 Ekre Ceannmor SQL Project for Beginners: AdventureWorks Sales Dashboard Building an SQL project on your own is a great way to sharpen your skills and gain practical experience. This SQL project example for beginners will show you how to create a sales dashboard with SQL and the AdventureWorks sample database. If you're an SQL beginner who wants to take their skills beyond simple query exercises, it’s a good idea to tackle an SQL data analysis project. Not only will it challenge you to apply what you've learned, it will also give you a deeper understanding of how SQL works in real-world scenarios. Read more 15 Oct 2024 Ekre Ceannmor 19 Aggregate Function Exercises Solve these 19 SQL aggregate function exercises and sharpen your SQL skills! Practice using aggregate functions with GROUP BY, HAVING, subqueries, and more. Includes a solution and detailed explanation for each exercise. Aggregate functions are an important part of SQL. They allow you to calculate different statistics and generate reports that you would not have been able to with single-row operations like filtering. It’s important to practice aggregate functions often, as they are a crucial part of your SQL skill set. Read more 1 Oct 2024 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 2024 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. Read more 17 Sep 2024 Martyna Sławińska 12 SQL Functions Practice Questions SQL functions allow us to manipulate data, including string and numeric values. This article presents 12 SQL functions practice questions – with solutions and detailed explanations – that will help you solidify your SQL knowledge. Practicing SQL is important if you want to improve your skills. But finding SQL practice exercises is hard. We want to help, so we’ve been publishing free compilations of SQL practice exercises. In this article, we’ve provided 12 SQL functions practice questions, complete with solutions and explanations. Read more 1 Sep 2024 LearnSQL.com Team Course of the Month: SQL Practice Set in PostgreSQL Do you know the basics of PostgreSQL but still need some practice? Look no further! Here is a great interactive course, SQL Practice Set in PostgreSQL. Throughout the month of September, you have access to it for FREE! We at LearnSQL.com believe that to learn a new skill, you need basic theoretical knowledge and, above all, a lot of practice. It's the same with writing PostgreSQL queries – you need a lot of PostgreSQL practice. Read more 15 Aug 2024 Jakub Romanowski How to Find SQL Databases for Practice Learning SQL is important for anyone working with data, but finding a SQL database for practice can be a challenge. In this guide, you'll find easy SQL queries (and some rather more complex) to help you get started using the databases from our new SQL Databases for Practice course. SQL can be fun and practical when you get to try out real queries on a real database. If you are a beginner this guide will help you get started with some simple SQL queries using the databases from our SQL Databases for Practice course. Read more 11 Aug 2024 Martyna Sławińska SQL Practice for Beginners: AdventureWorks Exercises Hone your SQL skills with hands-on exercises using the AdventureWorks sample database. Practice essential SQL features using real-world scenarios. Practicing SQL is important if you want to get better at using it. This article has 20 beginner-friendly exercises using the AdventureWorks sample database from Microsoft. This database is designed to show how SQL Server works. It represents a fictitious bicycle manufacturing company called AdventureWorks Cycles and includes five schemas: HumanResources, Person, Production, Purchasing, and Sales. Read more 18 Jul 2024 Tihomir Babic SQL Project for Portfolio: Northwind Store SQL portfolio projects are an important part of a data analyst’s education. How do you start a project, and where do you go with the insights you discover? We’ll use the Northwind store database to answer this. Doing a solid SQL project is an essential element of any data analyst’s learning process. An SQL project is a great tool for learning, as it makes you use SQL on a real-world dataset. Read more 11 Jul 2024 Martyna Sławińska 20 SQL WHERE Practice Exercises for Beginners In SQL, the WHERE clause filters data based on defined conditions. Read on to follow 20 WHERE practice exercises with beginner-friendly explanations and solutions. This article will review some of our SQL WHERE exercises. We’ll start by explaining the basic syntax, then we’ll examine 20 beginner-friendly exercises that come from the SQL courses listed below. These exercises cover the main uses of the WHERE clause and are perfect for practicing your SQL skills. Read more 30 Jun 2024 Lisandro Fernigrini 22 Exercises to Practice SQL Commands Want to improve your SQL knowledge? Practice SQL commands in these 22 realistic exercises! There's an old saying that "there's no substitute for experience". But how can you achieve that experience when you’re just starting to learn something new? The best way is by practice, practice, and more practice! In this article, we’ll provide you with some real-world SQL command practice. All of our practice exercises are taken from courses on LearnSQL. Read more 14 May 2024 Gustavo du Mortier 11 SQL Common Table Expression Exercises In this article, we offer you 11 practice exercises that put your knowledge of common table expressions (CTEs) into practice. Each CTE exercise is accompanied by a solution and a detailed explanation. As the saying goes, “A little progress each day adds up to big results”. And that is undoubtedly true for SQL proficiency. Just as you should regularly go to the gym to keep your muscles toned, you should do common table expressions exercises often to keep your querying skills toned for heavy data analysis work. Read more 1 May 2024 Jakub Romanowski Course of the Month: 2023 Basic Monthly SQL Practice Start enhancing your SQL skills this May with our free SQL course, 2023 Monthly SQL Practice Sets - Basic! Spring is a great time to learn something new or improve your current skills. This May, we’re offering a unique opportunity to boost your SQL knowledge through practical exercises drawn from real-world business scenarios. Available free for the entire month, our 2023 Monthly SQL Practice Sets - Basic course provides interactive challenges involving databases from different industries. Read more 29 Apr 2024 LearnSQL.com Team 10 Correlated Subquery Exercises with Solutions Correlated subqueries are a powerful SQL feature essential for advanced data analysis. This article provides 10 practical exercises to help you master correlated subqueries. SQL is a fundamental skill for anyone working with data, whether as a data analyst, a SQL developer, a data engineer, or any other related profession. Mastering SQL involves more than just understanding the basics. It also requires learning advanced SQL features, such as subqueries. Read more 25 Apr 2024 Gustavo du Mortier 19 PostgreSQL Practice Exercises with Detailed Solutions You’ve probably heard the saying “practice makes perfect”. Find out if this phrase is true by trying the comprehensive set of PostgreSQL practice exercises that you will find in this article! To master any language, it is essential to practice it regularly so as not to lose the skill. This is as true for verbal communication as it is for programming. And SQL programming is no exception. Even the most seasoned PostgreSQL programmer needs to do PostgreSQL practice daily to perfect (and maintain) their skills. Read more 10 Apr 2024 LearnSQL.com Team Your Guide to SQL Practice at LearnSQL.com Explore a variety of SQL practice opportunities at LearnSQL.com and take your data analysis skills to the next level. Whether you're a beginner or an advanced user, our learning resources are designed to help you master SQL through hands-on learning and real-world usage scenarios. SQL, or Structured Query Language, is a powerful tool used extensively in data analysis. It allows you to access and manipulate databases quickly and efficiently. Whether you are working in finance, healthcare, tech, or almost any other industry, SQL helps you extract and analyze data. Read more 29 Feb 2024 Alexandre Bruffa 20 SQL Practice Problems for Beginner and Intermediate Users Want to become an SQL expert? Try solving those 20 SQL practice problems! Whether you're just starting your SQL journey or preparing for exams, you need to sharpen your SQL skills if you want to become an expert. And you know what people say: practice makes perfect! Like most skills, SQL is best learned through experience; practicing SQL allows you to apply your knowledge to real-world scenarios. Through repeated practice, you'll gain the confidence to dive into complex SQL tasks and excel in both academic and professional fields. Read more 5 Feb 2024 Martyna Sławińska MySQL Practice: Best Exercises for Beginners These 15 MySQL exercises are especially designed for beginners. They cover essential topics like selecting data from one table, ordering and grouping data, and joining data from multiple tables This article showcases beginner-level MySQL practice exercises, including solutions and comprehensive explanations. If you need to practice … Selecting data from one table Ordering and grouping data Joining data from multiple tables … these 15 tasks are just for you! Read more 18 Jan 2024 Martyna Sławińska 18 SQL Questions for Beginners: Theory and Practice Whether you're starting or refreshing your SQL skills, join us as we work through these 18 SQL practice questions for beginners. SQL, or Structured Query Language, is a programming language used to define, retrieve, and manipulate data in relational databases. It provides an intuitive syntax of SQL statements and keywords that create, modify, and query relational databases. This article focuses on reviewing and practicing the basics of SQL. We’ll start by reviewing the SELECT statement and its required and optional components for fetching data from a single table. Read more 1 Jan 2024 Jakub Romanowski Course of the Month: SQL Practice - Running Kick off the new year and enhance your SQL skills with January’s free Course of the Month, Basic SQL Practice: Run Track Through Queries! As the new year unfolds, it's a time for reflection and the setting of new goals. A popular resolution among professionals and students alike is to acquire new skills or deepen existing ones. Whether it's learning a new language, mastering a software tool, or enhancing your job qualifications, the start of a new year provides a fresh opportunity for personal and professional growth. Read more 26 Dec 2023 Tihomir Babic SQL Query Practice: 20 Exercises for Beginners These 20 exercises are just what beginners need for SQL query practice. Try to solve each of them, and then look at the solutions. If something needs to be clarified, there are explanations for each solution. In this article, there’ll be less talking than usual. Instead, you’re going to write the answers to SQL practice exercises. (Don’t worry; we’ve included the solutions if you get stuck.) The whole point is to give you, as a beginner, plenty of opportunities for SQL query practice. Read more 12 Dec 2023 Martyna Sławińska SQL Subquery Practice: 15 Exercises with Solutions Subqueries are often challenging for beginners. Practice makes perfect, so join us as we work through these 15 SQL subquery practice exercises! In SQL, a subquery is a query nested within another query. It simplifies building intricate queries to retrieve data that meets specific conditions from various tables. In this article, we present various ways of employing subqueries to create complex queries. We start by introducing SQL subqueries along with common use cases. Read more 30 Nov 2023 Maria Durkin SQL for Data Analysis: 15 Practical Exercises with Solutions Are you new to the world of SQL and eager to unlock the power of data analysis?. In this article, we'll improve our SQL skills through 15 practical, hands-on exercises designed specifically for beginners. Because when it comes to SQL, practice truly makes perfect! We’re going to shine a spotlight on the critical domain of data analysis, where SQL takes center stage. SQL, or Structured Query Language, plays a pivotal role in data analysis. Read more 23 Nov 2023 Alexandre Bruffa The Best SQL Practice Challenges for Beginners Want to get better at SQL? Dive into SQL practice challenges! They're a great way to learn and improve. In this article, we'll explore why these challenges are important and where you can find the best ones. Are you a student, a business owner, or an employee? If data is part of your work and you want to learn SQL to manage it, you’ll need to practice. And interactive SQL challenges are ideal for beginners to get comfortable with the language. Read more 16 Nov 2023 Ignacio L. Bisso 10 GROUP BY SQL Practice Exercises with Solutions Need to practice your SQL skills? These 10 GROUP BY practice exercises – with explanations and solutions – are a great start! GROUP BY is a powerful SQL clause that allows you to create groups of records and then calculate summary metrics (such as averages) for those groups. However, GROUP BY is often challenging for SQL learners to master. Yet, practicing GROUP BY is very important if you’re planning on using SQL. Read more 9 Nov 2023 Alexandre Bruffa SQL Practice for Students: 11 Exercises with Solutions Calling all students! Are you SQL-curious? Want to learn or improve your SQL skills? This article has 11 SQL practice exercises with detailed solutions. Have you ever heard that “Practice makes perfect”? You probably have – that’s why you’re looking for SQL practice resources. If you want to develop strong skills or become an expert in a certain domain, you have to practice. As Rebecca McKeown wrote in her outstanding article Learning SQL? Read more 2 Nov 2023 Maria Durkin Where to Practice SQL Are you looking to boost your data management or analytical abilities? Then you need to know how and where to practice SQL, the worldwide language for managing and running relational databases. Of course, knowing where to practice SQL can be a challenge – there are so many options! In this article, we’ll walk you through the best digital platforms for enhancing your SQL skills. SQL, or Structured Query Language, is the universal language for managing and operating relational databases. Read more 26 Oct 2023 Jakub Romanowski How to Prepare for the SQL Assessment Test In this guide, I’ll walk you through the essentials of SQL assessment preparation, from understanding database management to mastering data analysis and SQL commands. Let’s dive in and set you on the path to success. In today's data-centric world, mastering SQL proficiency holds paramount importance. Whether you're a seasoned database manager or a newbie exploring the realm of database management, gearing up for an SQL Assessment is crucial. Stepping into the world of SQL can be both thrilling and challenging. Read more 17 Oct 2023 Nicole Darnley How to Create Your Own Database to Practice SQL Welcome to the step-by-step guide to creating your own SQL database from scratch, designed with beginners in mind. This guide helps you set up your database and also introduces you to essential SQL practice exercises to get you started on your learning journey. Follow along to gain SQL hands-on practice and foster a deep understanding of SQL functionalities. Everyone has a different style of learning, but one thing we all need is SQL hands-on practice. Read more 14 Sep 2023 Martyna Sławińska 11 SQL Window Functions Exercises with Solutions In this article, we present 11 practice exercises involving SQL window functions, along with solutions and detailed explanations. SQL window functions are a powerful feature that lets us extract meaningful insights from our data easily, yet few SQL courses offer SQL window functions exercises. This makes practicing window functions quite difficult. In this article, we’ll give you 11 practice exercises that feature window functions. All exercises shown in this article come from our interactive courses Window Functions and Window Functions Practice Set. Read more 5 Sep 2023 Tihomir Babic SQL Joins: 12 Practice Questions with Detailed Answers In this article, we dig into our SQL JOINS course and give you 12 join exercises to solve. But don’t worry – all the exercises have solutions and explanations. If you get stuck, help is there! This is, after all, made for practicing and learning. SQL joins can be tricky. It’s not just the syntax, but also knowing what joins to use in what scenarios. Joins are used when combining data from two or more tables in SQL. Read more 10 Aug 2023 Martyna Sławińska Advanced SQL Practice: 10 Exercises with Solutions As SQL proficiency continues to be in high demand for data professionals and developers alike, the importance of hands-on practice cannot be emphasized enough. Read on to delve into the world of advanced SQL and engage in practical exercises to enhance your skills. This article provides you with a collection of ten challenging SQL practice exercises specifically for those seeking to enhance their advanced SQL skills. The exercises cover a selection of SQL concepts and will help you refresh your advanced SQL knowledge. Read more 18 Apr 2023 Tihomir Babic 10 Beginner SQL Practice Exercises With Solutions Solve these ten SQL practice problems and test where you stand with your SQL knowledge! Practice is the best way to learn SQL. In this article we show you ten SQL practice exercises for beginners, where you can test your basic SQL knowledge. Use them as a practice or a way to learn new SQL concepts. For more theoretical background and (even more!) exercises, there’s our interactive SQL Basics course. Read more 23 Mar 2023 Jill Thornhill How to Practice Advanced SQL Online with LearnSQL.com Want to go from intermediate to advanced SQL user? You’ll need to practice! Here are some ways you can practice advanced SQL online. You’ve seen how SQL helps you make data-driven decisions. Perhaps you’ve even learned some advanced features. But you’d like to become an expert—and for that, you need practice, practice, and more practice. Is it possible to get advanced SQL practice online? Taking SQL to the Next Level What is advanced SQL? Read more 12 Jan 2023 Tihomir Babic How to Practice SQL Window Functions Online Learn and practice SQL window functions from the comfort of your home! Here’s how to do it. The last few years have shown that working from home has many benefits over the daily commute. No wonder people are reluctant to go back to the office! They have much more time while doing the same work. What do you do with the extra time? Whatever you want. It’s your time! Read more 29 Dec 2022 Ignacio L. Bisso How to Practice SQL Subqueries Have you ever wondered what separates beginners from advanced SQL users? It includes things like, for example, subqueries. In this article, I explain their importance and why you need to practice SQL subqueries to become an expert. What Is an SQL Subquery? SQL is an easy-to-learn language. However, there are certain complex features and techniques of the language that require practice. One of these features is the subquery, which adds great expressive power to the language and your projects. Read more 22 Oct 2021 Jakub Romanowski New Window Functions Practice Set Is Here! Have you learned the SQL window functions? Or maybe, you forgot when and how to use them correctly? Are you preparing for an advanced SQL job interview? You've come to the right place! This is the new Window Functions Practice Set. This is very good news for all SQL learners and database professionals who want to improve their skills. The LearnSQL.com Team is proud to present the new Window Functions Practice Set! Read more 5 Oct 2021 Kamila Ostrowska Best Places to Practice SQL JOINs Online You’ve just started your journey with SQL and you’re not sure what a JOIN is or where to use it. Don’t worry! In this article, you will find out what JOINs are and where you can practice them online. If you have just started learning SQL, you have a lot of topics to cover before you can call yourself a data professional. If you are serious about using SQL, you’ll have to understand JOIN – what it does, when you can use it, and what its different variants do. Read more 1 Oct 2021 LearnSQL.com Team Course of the Month: SQL Practice Set in MS SQL Server You have to train a lot to learn a new skill. It is the same with MS SQL Server. Do you want to write good SQL queries? Or maybe you are preparing for a job interview? You've come to the right place! Throughout October you will have access to our amazing hands-on MS SQL Server course for FREE! You probably just thought: “There must be a catch. Why would someone give away SQL courses for free? Read more 25 Aug 2021 Jakub Romanowski Why Is the SQL Practice Set my Favorite Online Course? My friends know that I cannot sit still. I always have to do something, read something, and learn new stuff. It's stronger than me. But I don't complain, because this approach has only helped me in my life. I have done a ton of different online courses, but the SQL Practice Set has proved to be the best so far. Find out why. Learning SQL was not easy for me. Read more 24 Jun 2021 Jakub Romanowski New Basic SQL Practice Course on LearnSQL.com Hey, did you hear that there’s a brand-new Basic SQL Practice course on LearnSQL.com? This is a great opportunity to refresh your SQL, write some queries, and take your analytical skills to the next level. We’re proud to introduce Basic SQL Practice: A Store! Where did the idea for this new SQL practice course come from? From our users! They’ve let us know that they need more hands-on SQL exercises at a beginner level. Read more 4 May 2021 LearnSQL.com Team Course of the Month: SQL Practice Set Are you starting your adventure with SQL and looking for a place to practice your SQL queries? Or maybe you are preparing for a job interview? I have good news for you. Throughout May, you will have access to our amazing SQL practice course for FREE! Why is LearnSQL.com giving you a free SQL course? Every month, our users get the opportunity to take one of our great SQL courses for free. Read more 12 Mar 2021 Tihomir Babic SQL JOIN Topics That Require Practice Are you interested in learning how to join tables in SQL? Where do you start? Many JOIN topics require practice. In this article, we’ll explore these topics by writing codes to solve real-life situations. Hopefully, you will learn which JOIN topics require attention. To make it easier for you, the topics are divided into beginner, intermediate, and advanced. Joining two or more tables in SQL lifts data analysis to another level. Read more 10 Mar 2021 Jakub Romanowski Where Can I Find Good Courses to Practice MS SQL Server? Begin your journey to mastering MS SQL Server with the finest practice exercises out there. Whether you are a beginner or seeking to improve your T-SQL skills, explore the top destinations for the most engaging and interactive MS SQL practice courses online. You've started learning MS SQL Server. Maybe you've done a course, watched some YouTube tutorials, and feel pretty confident in your knowledge. What now? Let me tell you, you need to practice. Read more 18 Feb 2021 Kamila Ostrowska How to Practice PostgreSQL Online PostgreSQL is hot right now!If you want to join a community of people passionate about data, this open-source database system is something you need to try. Like everything we teach on LearnSQL.com, PostgreSQL requires practice. To profit from Postgres – as this dialect is sometimes called – you need to start with the basics. You can watch some tutorials on YouTube or read articles to get to know what a Database Management System (DBMS) is. Read more 16 Jun 2020 Tihomir Babic How to Practice SQL Window Functions at Home Are you looking for a way to maintain your knowledge of SQL window functions? What’s the best way to practice them at home? Here are some suggestions. Learning something new feels great, but it’s also arguably the easiest part of gaining knowledge. You’ve probably experienced that yourself. You struggle with learning an idea, and then you finally get it! There’s the feeling you’ve learned something. And then, very soon, you practically have to start all over again with the very same concepts. Read more 24 Mar 2020 Emil Drkušić How to Practice SQL JOINs There is no better way to learn how to practice SQL joins than through hands-on experience. However, there will probably be obstacles along the way. I’ll cover some of these obstacles and give ideas for how to overcome them. While this article won’t turn you into SQL JOINs expert, it will show you how to become one. So, let’s start! Diving into the world of databases? Then you've likely come across SQL joins. Read more 11 Mar 2020 Rebecca McKeown Learning SQL? 14 Ways to Practice SQL Online If you’re currently learning SQL, you may have found yourself knee-deep in reading material and wondering how on earth you can bridge the gap between book knowledge and real-life SQL application. In this article, we bring you 14 of the most effective ways to practice SQL online – taking you from a bookworm to a database butterfly in no time at all! “All theory and no practice will make you a frustrated SQL user! Read more 28 Jan 2020 Jakub Romanowski How to Practice SQL Are you familiar with SQL's core concepts like aggregation functions, JOINs, GROUP BY, and ORDER BY? That's a great start. But to truly master SQL – especially for data analyst roles and job interviews – it's crucial to understand how to practice SQL effectively. This article provides a comprehensive guide to the best methods to practice SQL. You’re here because you're eager to enhance your SQL skills and become an independent database user. Read more
SQL practice is a key step in mastering the language and becoming proficient in writing queries. Consistent practice helps you build confidence and apply SQL effectively to solve real-world data challenges. Below is a collection of articles designed to help you enhance your SQL skills. These resources include a variety of guides, tips, and hands-on exercises covering everything from fundamental queries to advanced topics. They offer the perfect opportunity to strengthen your SQL knowledge through practical application.