The Legacy Hunt

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

Domain

SQL

Difficulty

easy

Seniority

junior

Problem

The data engineering team is sunsetting pipelines that predate a recent infrastructure migration. Surface every unique pipeline name that had at least one run before July 1, 2026.

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.