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 23 Jan 2025 Marek Pankowski Common SQL Job Interview Questions Congratulations! Your SQL skills were strong enough to get you that job interview! Now, if you only knew what SQL questions and practical exercises a recruiter might ask you to do… This article is meant as a SQL practice for interviews. I’ll help you prepare for the SQL and database aspects of your job interview. Knowing SQL opens up opportunities in and out of IT, as this query language is used practically everywhere. Read more 16 Jan 2025 Jill Thornhill Meta SQL Interview Questions Meta SQL interviews are tough, and you need to hone your skills if you’re to land a prestigious and well-paid job. Read on to find out what kind of SQL interview questions you may be asked in a Meta interview, how best to prepare, and how to stand out from the crowd. Meta is a highly data-driven company, one that uses a wide variety of database technologies. MySQL is their primary database, but they also have special-purpose databases for various applications. Read more 19 Dec 2024 Ekre Ceannmor Amazon SQL Interview Questions Are you preparing for an interview at Amazon? Take a look at these interview questions and check your professional SQL knowledge! Interview preparation for big companies such as Amazon can be overwhelming, but you can always practice beforehand and strengthen your SQL skills! In this article, we will go over Amazon SQL interview questions and help you prepare for your next big interview. Looking to master all of SQL and ace any task? Read more 20 Nov 2024 Tihomir Babic SQL Interview Questions for Software Testers SQL is a crucial skill for software testers. Otherwise, how would they get the data to test? Interviewers for these jobs may ask you several SQL software testing questions. So, if you’re preparing for a job interview, you’ll need to know how to answer these ten common SQL questions. Why do software testing interview questions include SQL? Well, software testers commonly use Structured Query Language in their daily tasks. Read more 26 Sep 2024 Tihomir Babic SQL Interview Cheat Sheet Need to quickly reference all the fundamental knowledge for an SQL interview? Want to refresh your memory about an SQL concept? Our SQL Interview Cheat Sheet is your new best friend! Preparing for an SQL interview requires brushing up on your SQL. But it’s very easy to get lost in all the SQL concepts you must review. In such situations, you need an easily browsable resource packed with SQL knowledge. Read more 29 May 2024 Agnieszka Kozubek-Krycuń Top 100+ SQL Interview Questions and Practice Exercises Are you gearing up for a SQL interview? This article is packed with over 100 SQL interview questions and practical exercises, organized by topic, to help you prepare thoroughly and approach your interview with confidence. SQL is essential for many jobs, like data analysis, data science, software engineering, data engineering, testing, and many others. Preparing well for a SQL interview is crucial, no matter what role you're aiming for. Read more 16 Apr 2024 Maria Durkin 25 SQL Interview Questions for Data Analysts You have an upcoming interview for a data analyst position and SQL is one of the skills that will be tested. Well, these SQL questions for data analysts are specifically tailored for you! SQL is a must-have skill in every data analyst's toolkit. It simplifies data extraction and manipulation, allowing analysts to convert raw data into actionable insights. It enables analysts to perform ad hoc analyses, accelerating organizational decision-making processes. Read more 21 Mar 2024 Tihomir Babic 15 Tricky SQL Interview Questions for Experienced Users SQL interview questions for experienced users usually contain some trick(y) questions. Interviewers use them to test your gumption, which is typically a result of extensive experience and a high level of SQL knowledge. I will show you 15 tricky SQL interview questions (mostly coding) in this article. Mind you, these are not necessarily complex questions. Actually, that’s their main characteristic: they seem very easy and straightforward, but that’s the interviewer trying to deceive you. Read more 19 Oct 2023 Tihomir Babic Top 29 SQL Server Interview Questions Looking for an SQL Server job? Review these 29 must-know SQL Server interview questions and you’ll be well-prepared. And don’t worry about looking up the answers – we provide them, too! Microsoft SQL Server's first version was released in 1989 and has a rich history. It has come a long way since then, becoming one of the most used database engines in the data industry. In the last ten years, it’s been the third most popular database engine. Read more 22 Aug 2023 Nicole Darnley How to Prepare for an Advanced SQL Interview Tips and tricks to help you ace even the most advanced SQL interview questions. SQL has become the lingua franca of data – the standard method for interacting with databases, extracting insights, and conducting analytical tasks. As a data analyst, the ability to understand and manipulate SQL code is not just a 'nice to have'; it's an absolute necessity. For many data analyst roles, a basic understanding of SQL isn't enough. Read more 23 Feb 2023 Tihomir Babic Top 27 Advanced SQL Interview Questions with Answers Where can an SQL professional find a comprehensive guide to advanced SQL interview questions? The shortest answer is: here! We selected the 27 most important SQL questions and answered them for you. Preparing for an SQL interview is not easy, especially if your job requires the knowledge of advanced SQL. This article contains the 27 most commonly asked advanced SQL interview questions and provides detailed answers and resources for further reading. Read more 13 Sep 2022 Tihomir Babic Top 10 MySQL Interview Questions And Answers You learned SQL and now you want to use this valuable skill to get a better job. Now it’s time to prepare for the job interview. We’ve got ten MySQL interview questions and answers to help you with that. In today's hyperconnected world, knowing how to deal with it has become a necessary skill. That’s why you probably learned (or want to learn) SQL: either your job requires it or you realized that you need SQL to get a better job. Read more 21 Jun 2022 LearnSQL.com Team Prepare for a SQL Interview with LearnSQL.com You've been working hard to get a SQL interview at your dream company. Now they’ve called – and you need to prepare if you’re going to ace it. In this article, I’ll show you the most efficient way to prepare for a job interview using the interactive SQL courses at LearnSQL.com. SQL is an essential skill for anyone working with data. Wanna be a data analyst, data scientist, software engineer, or tester? Read more 17 May 2022 Tihomir Babic Top 9 SQL GROUP BY Interview Questions Preparing for an SQL job interview? This guide will walk you through nine basic, intermediate, and advanced GROUP BY questions that you may have to answer. There are common GROUP BY questions that pop up in a lot of SQL job interviews; in this article, we’ll explain how to answer them. If you are a data analyst or another data professional preparing for an interview, this article aims to help you out. Read more 20 Jan 2022 Andrew Bone 10 PostgreSQL Interview Questions and Answers Job interviews are always stressful. Interviewing and getting asked technical questions about PostgreSQL is even more of a challenge! In this article, we’ll cover some of the PostgreSQL interview questions you can expect when applying for a new job. By the end of the article, you should be able to handle most of the questions you are likely to face. We’ve previously covered common questions you can expect at a SQL job interview, but this article will be focused on Postgres specifically. Read more 24 Nov 2021 Tihomir Babic Top 5 SQL CTE Interview Questions Here are five questions (and solutions!) on CTEs you’ll (probably) be asked at an interview. I’m not saying you will get these SQL CTE interview questions at every job interview. But when you do, they are probably along the lines of the five I’m about to show here. Other than theoretical questions about CTEs, there are not that many variations in the CTE scenarios evaluated by interviewers. Go through these five examples, and you get a good foundation for acing your interview! Read more 16 Jul 2021 Ignacio L. Bisso Top 10 SQL Window Functions Interview Questions Many interesting job positions require SQL skills – and that includes window functions, which are not commonly taught in online courses. In this article, I will cover the top window function questions for every experience level. If you’re going for a job interview for an advanced SQL position or for intermediate to advanced data analyst positions, you’ll probably be asked about your knowledge of SQL window functions. Don’t panic! Although these functions aren’t commonly covered in online courses, we’ve got the answers right here. Read more 30 Jun 2021 Zahin Rahman Top 15 SQL Interview Questions in 2021 If you are on the lookout for a job in the field of data, you’re almost guaranteed to face SQL interview questions. You might even be asked to complete some kind of SQL coding test. According to KDnuggets, irrespective of the specific role in data – data analyst, data engineer, data scientist, or business intelligence analyst – SQL lands in the top three skills found in postings across Indeed, SimplyHired, and Monster. Read more 11 Feb 2021 Kateryna Koidan Enumerate and Explain All the Basic Elements of an SQL Query “What are the basic elements of an SQL query?” is a popular SQL job interview question. In this article, we review the basic syntax of an SQL query. An SQL query, which requests information from a relational database, consists of several elements. These allow you to select specific columns from specific tables and to filter and sort this information if necessary. In this article, I’ll briefly review these elements by explaining what each element does and how to use it. Read more 9 Dec 2020 Andrew Bone The Top 10 SQL JOIN Interview Questions with Answers Have you ever wondered what SQL JOIN questions you might be asked in an interview? Do you feel prepared to answer them? This article covers the most common SQL JOIN interview questions and how to answer them. If you are applying for a job as a data analyst or software developer, you will likely be asked about your SQL JOIN knowledge. SQL JOIN clauses are a great topic for interviewers to quiz you on. Read more 13 May 2020 Tihomir Babic 11 Advanced SQL Interview Questions (and Answers) Do you want to move to a job that uses SQL? Are you unsure about what to expect during the job interview or how to benchmark your knowledge? This article will give you a good idea of where you stand. If you feel stuck in your job, you’re not the only one. The modern division of work pushes people to perform very specific tasks, expecting them not to look at what's on the other side. Read more 1 May 2020 Rebecca McKeown How to Practice SQL for a Technical Job Interview You’ve scored yourself an interview for an SQL-related job. Nice work! But perhaps uncertainty is creeping in as your interview date looms closer. Do you know enough SQL to make the cut? What questions are you likely to be asked? What SQL practice should you be doing before your interview? Almost all SQL job candidates go through exactly the same nerve-wracking process. Here at LearnSQL.com, we have the lowdown on all the SQL practice and preparation you’ll need to ace those interview questions and take your career to the next level. Read more 20 Feb 2020 Tihomir Babic 8 Common Entry Level SQL Developer Interview Questions Have you ever been interviewed for an entry-level SQL position? Are you planning to apply for such a job? This article will help you to know what to expect and prepare for common SQL developer interview questions. After gaining some basic knowledge of SQL and programming, you're probably wondering what to do next. Or maybe you're not wondering! You know that what you've learned will soon disappear if you don't use it regularly. Read more 25 Oct 2017 Dorota Wdzięczna 16 SQL Interview Questions for Business Analysts For business analysts, SQL skills are incredibly important. That’s why SQL interview questions are a major part of the hiring process. These questions test key SQL concepts and how they apply to data analysis. In this article, we’ll go over some of the most common SQL interview questions for business analysts. Our goal is to give you the insights you need to do well in your interview and move forward in your career. Read more