Project Summary The SQL script in this repository demonstrates the use of subqueries in various clauses (WHERE, FROM, SELECT). The script first sets up a sample database for an online bookstore and ...

PROC SQL allows a subquery (contained in parentheses) at any point in an expression where a simple column value or constant can be used. In this case, a subquery must return a single value, that is, ...

This repository contains SQL subquery practice problems using an employeesales table. Each query is designed to help users understand how to apply subqueries in real-world business scenarios such as ...