Coach note

Interviewers ask this kind of question to surface how you think, not what you remember. The strongest answers are specific, calmly told, and end on what changed.

SQL · Subqueries

You have a referrals table with referrer_id and referred_id. Write a query that returns users who have referred at least 5 people, where at least 3 of those people also made a referral.

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You have a referrals table with referrer_id and referred_id. Write a query that returns users who have referred at least 5 people, where at least 3 of those people also made a referral.

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