11. Find Duplicate Emails
EasyAdvanced FilteringGROUP BYHAVING COUNT
HAVING filters after aggregation, which is how you keep
only groups that meet a count condition.
Task: return every email that appears more than once in the table. Order
by email.
Tables
Loading schema…
Expected outputrows must come back in this order
Computing expected output…
This is the result for the example data above. On Submit your query is graded against this example plus 4 hidden edge cases — 5test cases in all. A sloppy query that only fits the example won't pass.
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