#5 most askedVery commonEasyGroup by
Find Duplicate Emails
New to Group by? Learn it from scratch firstGrouping Results with GROUP BY →
🏢 Asked in real interviews
No reports yet. Were you asked this? Be the first to say where.Return every email that appears more than once in employees.
🧪 Practice
Write the query, then press Run tests to compare your rows with the expected result.
SELECT * FROM employees;
Output appears here. Press Run or Ctrl/⌘ + Enter.
Try it first. Struggling for a few minutes is how it sticks.