Ever tried to learn SQL, the query language that lets you poke at the innards of databases? Most tutorials start by having you create your own database, fill it with nonsense, and then run queries ...

Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins ...

Want faster SQL queries? Here are nine best practices for writing SQL queries that work like a charm (or at least, like they should).