MySQL Beginner Course: Chapter 7 - MySQL Subqueries

MySQL Beginner's Course is a complete MySQL series that will help you get started with MySQL and you'll be ready for work in no time.

Simply speaking, a subquery in MySQL is a query within a query. We create subqueries within our SQL statements. These subqueries can reside in the WHERE clause. A subquery is often called an inner query, while the query that contains the subquery is called the outer query. Subquery is a widely used technique in filtering and fetching appropriate data.
In this chapter on MySQL subqueries, we will learn the following things:
1. Subqueries with WHERE clause
2. Subqueries with FROM clause
3. Correlated Subqueries
4. Derived Tables

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