Company
Grab SQL questions
Ride-hailing, deliveries and payments in one warehouse — so these questions join trip-level tables to drivers, merchants and promos. Expect window functions for ranking and running totals, and questions where the trap is silently dropping cancelled trips.
Prefer a fixed order? Grab pack is a hand-picked path through some of these.
easyCompleted rides by cityGrab · aggregationFree→mediumAd click-through conversion rate, per campaignGrab · aggregationBasic→mediumAverage ride duration, by monthGrab · date-timeBasic→mediumDrivers rated above averageGrab · subqueryBasic→mediumIndex a foreign key column Postgres never indexed for youGrab · indexingFree→mediumSample ratio mismatchGrab · experimentationBasic→hardPooled standard error and z-scoreGrab · experimentationBasic→hardPrevious month's revenueGrab · windowFree→
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