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Categories With Mixed Price Tiers
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- mid
Problem
A recommendation model needs product categories that span both high-value (over $500) and lower-value transactions, since mixing price tiers improves diversity. Which categories have seen both kinds of transactions? Return just the category name.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.