Top Websites for SQL Practice

  1. HackerRank: Offers a wide range of SQL challenges, from basics to advanced, in a competitive, interview-focused setup. Its editor supports multiple SQL dialects.​
  2. LeetCode: Known for interview practice, it provides extensive SQL problem sets sourced from real company questions.​
  3. StrataScratch: Features 1,000+ practical SQL interview questions from real companies, ideal for problem-solving and interview prep.​
  4. DataLemur: Focuses on SQL interview and problem-solving challenges, with a large collection of free exercises and a practical approach.​
  5. SQLZoo: Interactive step-by-step tutorials and exercises with instant feedback, suitable for both beginners and intermediate learners.​
  6. SQLBolt: Offers beginner-friendly, interactive lessons and clear, hands-on exercises to build foundational SQL skills.​
  7. SQL Fiddle: Functions as an online SQL playground where you can experiment and practice on real databases and get instant results.​
  8. W3Schools SQL Exercises: Provides simple, structured tutorials and exercises with a "Try-it-Yourself" editor, great for step-by-step learning.​
  9. CodeChef/Codewars: Presents SQL challenges in a gamified environment, useful for practicing various query types.​
  10. SQL-Practice.com: Lets you practice SQL queries directly in an online terminal with a practice database, ideal for building confidence through hands-on exercises.​ 

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