There are between 3 and 9 questions in each catergory. The answer can be found in the corresponding tutorial chapter. If you're stuck, or answer wrong, you can try again or hit the "Show Answer" button to see the correct answer.

Mar 13, 2025 · SQL Exercises : SQL (Structured Query Language) is an ANSI-standard language for managing and manipulating relational database systems. It retrieves, updates, and organizes data stored in tables, where relationships between data are also defined through tables. Master SQL through hands-on practice!

Mar 7, 2025 · These exercises serve beginners, intermediate, and advanced learners, providing hands-on experience with SQL tasks. We'll work on everything from basic data retrieval and filtering to advanced topics like joins, window functions, and stored procedures.

Dec 26, 2023 · 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.

4 days ago · Below are some of the most commonly asked SQL query questions and answers for practice. Get a timer to track your progress and start practicing. 1. Write SQL Query to Display FIRST_NAME with Alias WORKER_NAME. An alias is a user-friendly label for a column in the SQL table. Use the ‘As’ clause to specify the alias in the query. 2.

Start your journey to SQL mastery today! By the end of these exercises, you will master advanced SQL techniques, including window functions, recursive queries, and performance optimization. Start with the first exercise and attempt to solve it before checking the hint or solution.

1 day ago · It includes 29 main exercises, each accompanied by solutions, detailed explanations, and four related problems. You may read our SQL Joins, SQL Left Join, SQL Right Join, tutorial before solving the following exercises. 1. Sales & City Matching.

Write a CASE WHEN expression to assign countries to different groups. Divide events according to whether their first/last letters are the same or vowels. Use a variety of text functions in SQL queries to manipulate names and addresses of a list of venues.

Nov 9, 2023 · This interactive online course is designed for people who know SQL and are looking for practice exercises that cover single table queries, joins, sorting, grouping, aggregation, and more. It’s part of our SQL Practice track, which contains more SQL practice courses for …

400 Exercises: sql queries, filtering, sorting, multiple tables, joins, subqueries. 40 Exercises: select, variables, subqueries, joins, aggregation, data modification. 20 Exercises: select, sum, count, joins, nulls. 60 Exercises: multiple tables queries. 4 Exercises & Mock interview questions: joins and sub queries. 10 Exercises: subqueries, joins.