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 ...

A SELECT group of programmers with a DISTINCT advantage If you’re still with us, congratulate yourself—you survived the second part of our series on SQL basics!

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how. To avoid duplicate results: Simply use the DISTINCT clause and between the SELECT ...