Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

The phrase FROM Donors INNER JOIN DonationRecords ON tells SQL to find matching records between the two tables, based on the expression that follows the key word ON. That expression closely ...

A join combines two or more tables side by side. If you do not specify how to join ... If no relations are defined, you have to join the tables manually. When you review your SQL code (by selecting ...