Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Welcome to this hands-on lab on Working with Multiple Tables in SQL! This repository contains a step-by-step guide on how to write SQL queries that access multiple tables, compose queries using ...

Joining multiple tables is a fundamental concept in SQL, allowing you to combine data from different tables to answer complex queries. Furthermore, you will also practice how to use aggregate ...

The INNER JOINS: Matching records only In December 2001’s “Another crash course in SQL,” I showed you one way to extract information from two tables in one statement.

A join combines two or more tables side by side. If you do not specify how to join the tables, you get a Cartesian product. This means that SQL combines each row from the first table with every row ...