We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. SQL
  3. Basic Join
  4. Top Competitors
  5. Discussions

Top Competitors

  • wongj19
     + 1 comment

    Can someone explain why we need WHERE s.score = d.score AND c.difficulty_level = d.difficulty_level ?