SQL · Product-Company Interviews

Scenario-Based SQL Masterclass Crack SQL at Top Product Companies

Not 100 random questions. The handful of patterns every product-company SQL round is built on — solved live, end to end.

Product-company SQL rounds are not a hundred random questions. They are built on a handful of patterns, and once you can see the pattern in the first thirty seconds the query writes itself. Two hours, six live scenarios: window functions in anger (RANK, LAG/LEAD, running totals), retention and cohorts (D1/D7/D30, churn, repeat rate), funnels and sessionisation (event order, drop-off, gaps and islands), tricky joins and duplicates (fan-out, anti-joins, dedupe patterns), top-N and ratio problems (per-group ranking, % of total), and optimisation and narration — query plans, indexes, and how to explain your answer the way interviewers actually score it. Ends with live Q&A on SQL rounds and case interviews.