Query returning no records solved!!!
This video demonstrates the oracle sql interview question where one need to use either not in, not exists or an outer join to get the desired result. For example if one is asked to fetch records from department table where department_id is not present in employee table
![Wet Hands - Minecraft (Piano Tutorial) // [Synthesia]](https://images.videosashka.com/watch/Z7ZkOTDyVeE)
