Refactor SQL to Reduce Debt

HardSQL & Data Manipulation00:00

Practice interviewer

In session

5 left

00:00

Your question is Refactor SQL to Reduce Debt. Take a moment with it on the right.

Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).

You need to log in / sign up to chat or submit.

Please find 5 ways to refactor this SQL code to reduce technical debt.