I've said it before and I'll say it again: If you want to speed up your application, don't look at your code, look at your data access. The two slowest things you can do in application development are ...

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 ...

SQL is the prime building block of the modern enterprise. All those exciting applications, nifty mobile apps and massive back-end projects are, essentially, useless without the data behind them. That ...