Subqueries (nested query) and GROUP BY in SQL: Advance commands

In this article at OpenGenus, we have covered two advanced concepts in SQL that is using Subqueries (nested query) and nested commands along with GROUP BY. We have explained the concepts with SQL examples.

Table of contents:

Subqueries (nested query)- a query within a queryNested SQL commandsUsing two nested commandsGROUP BYSubqueries (nested query)- a query within a query

Suppose you possess a database consisting of several tables containing varying data such as personal details, interest...