Double or Nothing

A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant feedback.

Domain

SQL

Difficulty

hard

Seniority

L5

Problem

A pricing analyst is flagging products on the same shelf that carry wildly different stickers. Within each category, find every pair where one product costs at least twice the other, listing each pair only once.

Summary

Same shelf, wildly different stickers. Spot the pricing gaps.

Practice This Problem

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