SQL JOINs Quiz: Boss Battle

6 timed questions to test what you learned in JOINs: Connect the Tables.

What you'll be asked

  • What does the ON clause in a JOIN do?
  • Predict the output: How many rows does this return?
  • Which join keeps rows from the left table that have no match on the right?
  • Write the query: Return the name of every pizza made by a chef whose specialty is 'Fusion'.
  • Fix the bug: Fix the join condition.
  • Predict the output: What is in the order_id column for Felix Wagner?

Open this page in a browser to fight the boss. Score 60% or more to win.