Selling Where Nobody Lives

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Our logistics team keeps flagging orders that ship to destination markets where we have no customers on file. Using the order records, return each shipping destination (`orders.region`) that never appears as the home country of any customer (`customers.country`).

Summary

Shipments land in regions our customer list has never heard of.

Practice This Problem

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