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

L4

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.

Summary

Users who cross content types.

Practice This Problem

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