Learn SQL syntax through code examples that explain how to combine tables, sort grouped data, and identify SQL Server data types. Access over 150 tested code samples from books and online resources.
by Fedor Obraztsov★ 4.9109 ratingsEducationFreeData updated 2026-09-06
Allows users to write and run code on mobile devices and tablets. It includes a code editor, sample library, and tools for building front-end and back-end apps. Users can customize projects and deploy applications directly.
Allows users to study basic and advanced SQL concepts. Users can insert, update, delete, and query documents. They can also sort and limit results, create and drop collections.
Access course materials, complete assignments, and earn certificates in digital skills. Enroll in AWS certification, JavaScript, and HTML courses. Track progress and participate in live classes.
Through interactive challenges in Python, JavaScript, C++, HTML, CSS, and SQL. Write and run code instantly to solve puzzles. Track progress and complete real-world tasks to build practical skills.
Write Python scripts and run them directly on iOS devices. Access sensors, location, photo library, contacts, and clipboard. Use popular modules like requests, numpy, and matplotlib. Develop and test code on the go without needing a computer.
Python with step-by-step tutorials, interactive coding exercises, and quizzes. Practice in a built-in code editor, test knowledge with exercises, and track progress in real time.
With interactive tutorials for all skill levels. Run code snippets using an integrated compiler. Access hundreds of examples and practice exercises. View code output instantly. Brush up on interview concepts and syntax.
Programming languages such as Java, Python, Kotlin, JavaScript, Go, and SQL. Complete courses and projects to build real-world skills. Track progress and access detailed explanations for exercises. Earn certifications upon course completion.