![]() ![]() The platform has over 40 SQL interview questions on topics such as conditional aggregation, string and window functions, and cumulative sums. Under the free tier, you can access up to 50 questions with solutions, and attempt over 500 SQL questions.ĭataLemur has a curated collection of SQL interview questions that have appeared in interviews in tech companies like LinkedIn, Tesla, Microsoft, and Walmart among others. If Python is your preferred programming language, you can use pandas to solve the questions. Their coding workspace supports PostgreSQL, MySQL, and Microsoft SQL Server (in beta). In addition to filtering by topics and difficulty level, you can filter through the list of the questions to get company-specific SQL interview questions. StrataScratch, another popular practice platform for SQL interviews, has a huge collection of SQL interview questions. With a free account, you can access some of the questions. They also offer SQL coding questions by the industry, such as fintech, education, and e-Commerce. ![]() ![]() Multi-table operations such as JOINs and UNIONsįor each of the above categories, there are questions with varying difficulty levels.Single-table operations such as simple SELECT queries, using the WHERE clause, and GROUPBY.SQLPad offers practice questions in the following broad areas: You can access the whole collection of practice questions and assessments with a free account on the platform. SQL Advanced includes query optimization, modeling, indexing, and window functions.SQL Intermediate covers joins, unions, and subqueries.SQL Basic tests you on simple queries, relationships, and aggregations.Currently, the following SQL assessments are available: These tests are timed assessments that require you to solve SQL questions within a time limit. In addition, you can filter the practice questions by topics, such as select queries, joins, and aggregations.Īfter practicing, you can also take HackerRank’s Skills Certification Test to test your SQL skills. Alternatively, depending on your comfort level, you can choose to practice questions on basic, intermediate, and advanced SQL topics. You can filter the questions by their difficulty levels: easy, medium, and hard. HackerRank’s SQL practice suite has hundreds of questions available for you to practice. From software engineering to data analytics, HackerRank is one of the best platforms for practicing coding interview questions. ![]()
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