Combine active usernames and in-stock product names into one list with a source column using UNION A

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

Domain

SQL

Difficulty

medium

Problem

Combine active usernames and in-stock product names into one list with a source column using UNION ALL

Practice This Problem

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