Feature Name Intersection

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

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

The ML feature store pulls feature names from two sources: 'ad_impressions' and 'search_queries'. Find which feature names appear in both sources.

Summary

Training names versus serving names. The overlap.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.