Select Star SQL VS Project Euler

• 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.

• Problem-Solving Skills
  Project Euler offers a range of problems that can help enhance your mathematical and algorithmic problem-solving abilities.
• Programming Practice
  It provides an excellent platform to practice and improve your programming skills across multiple languages.
• Mathematical Insight
  Many problems require a deep understanding of mathematical concepts, thus helping users to gain and apply advanced mathematical knowledge.
• Community
  Project Euler has a vibrant community where you can discuss problems and solutions with like-minded individuals.
• Free Access
  All the problems and resources on Project Euler are freely accessible, making it an affordable way to learn.
• Self-Paced Learning
  Users can progress at their own pace, making it suitable for learners of all levels.

Possible disadvantages

• Steep Learning Curve
  The problems can become very challenging quickly, which might be discouraging for beginners.
• Limited Step-by-Step Guidance
  There is little to no step-by-step guidance or hints available, which might hinder the learning process for some users.
• Focus on Mathematics
  The heavy focus on mathematical problems may not appeal to those primarily interested in practical programming tasks.
• Lack of Immediate Feedback
  The platform does not offer immediate feedback on code submissions, which might slow down the learning process.
• No Built-in IDE
  Users need to use their own development environments, which might be inconvenient for some, especially beginners.

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Project Euler Challenges 1–4 - Coding Challenges with Florin

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Tracking Select Star SQL since May 2026.

• Fast Factorial Algorithms

  Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 6 months ago

• I Miss Thinking Hard

  Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 9 months ago

• A simple leaderboard changed player behavior in my puzzle game

  I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 11 months ago

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