Select Star SQL VS SQL Teaching

• Completely Free
  Select Star SQL is entirely free to use with no paywalls, subscriptions, or hidden costs. This makes it accessible to anyone who wants to learn SQL regardless of their financial situation.
• Interactive Hands-On Learning
  The platform provides an interactive SQL environment directly in the browser where learners can write and execute real SQL queries against actual datasets, reinforcing concepts through practice rather than passive reading.
• Real-World Dataset
  The course uses a compelling real-world dataset about Texas death row executions, which makes the learning experience more engaging and meaningful compared to abstract or contrived examples.
• Well-Structured Progressive Curriculum
  The course is organized in a logical progression from basic SELECT statements to more advanced concepts like aggregations, joins, and subqueries, allowing learners to build knowledge incrementally without feeling overwhelmed.
• No Setup Required
  There is no need to install any software, set up a database, or configure an environment. Learners can start writing SQL queries immediately in their web browser, removing a significant barrier to entry for beginners.

Possible disadvantages

• Limited Scope
  The course covers only fundamental SQL concepts and does not address more advanced topics like window functions, CTEs, indexing, database design, or performance optimization, which are essential for professional SQL usage.
• Single Database Dialect
  The platform teaches SQL using SQLite, and does not cover syntax differences or features specific to other popular database systems like PostgreSQL, MySQL, SQL Server, or Oracle, which learners may encounter in real jobs.
• No Certificate or Credential
  Completing the course does not provide any formal certificate, badge, or credential that learners could use to demonstrate their SQL skills to potential employers or on professional profiles.
• Limited Practice Exercises
  While the course includes some exercises, the total number of practice problems is relatively small compared to dedicated SQL practice platforms, which may not be sufficient for learners who need extensive repetition to solidify their skills.
• Single Dataset Can Feel Restrictive
  Using only one dataset throughout the entire course means learners do not get experience working with diverse data schemas, table relationships, or different types of data, which limits exposure to varied real-world scenarios.

• Interactive Learning
  SQL Teaching provides an interactive, hands-on environment where users can write and execute SQL queries directly in the browser, allowing them to practice and see results immediately without needing to set up a local database.
• Beginner-Friendly
  The platform is designed with beginners in mind, starting from the very basics of SQL such as SELECT statements and gradually building up to more complex topics, making it accessible to people with no prior SQL experience.
• Free to Use
  SQL Teaching is completely free with no paywalls, subscriptions, or hidden costs, making it an accessible resource for anyone who wants to learn SQL regardless of their financial situation.
• Progressive Lesson Structure
  The lessons are organized in a logical, step-by-step progression where each lesson builds on the previous one, helping learners gradually develop their SQL skills in a structured manner.
• Minimalist and Distraction-Free
  The website has a clean, simple interface without ads or unnecessary clutter, allowing learners to focus entirely on the SQL content and exercises without distractions.

Possible disadvantages

• Limited Depth of Content
  The platform covers only basic SQL concepts and does not delve into more advanced topics such as window functions, CTEs, stored procedures, indexing, or database optimization, limiting its usefulness for intermediate or advanced learners.
• No User Accounts or Progress Tracking
  SQL Teaching does not offer user accounts or persistent progress tracking, meaning learners cannot save their progress and must start over or manually keep track of where they left off between sessions.
• Lack of Real-World Scenarios
  The exercises use simplified, small datasets and scenarios that do not reflect the complexity of real-world databases, which may leave learners unprepared for practical, on-the-job SQL tasks.
• No Community or Support Features
  The platform lacks a community forum, discussion boards, or any form of instructor support, so learners who get stuck have no built-in way to ask questions or get help from others.
• Limited Explanations and Theory
  The instructional content for each lesson is quite brief and does not provide in-depth explanations of underlying database concepts or theory, which may leave learners with gaps in their understanding of how and why SQL works the way it does.