In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries. To cap it all off, we’ll execute a query ...

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 ...

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

Learn More. Startup Vembu Technologies has unveiled an SQL conversion tool thats designed to parse any relational database dialect and automatically convert SQL queries into other SQL dialects.

SWObjects can also rewrite SPARQL queries in SQL, effectively including relational databases alongside SPARQL endpoints in a linked data federation.