Writing SQL for performance can also avoid having to respond to an urgent problem with performance in a production environment. To a considerable extent, a person can choose whether they are running ...

Hello to all, I have to design a SQL query on an Oracle 10 DB. I want to do it in an elegant way and avoid, if possible, using sub-queries and in the most portable way possible. Basically it's ...

Airbnb has open sourced Airpal, the tool it built to help employees get to data they need to use. It's built on Facebook's open source Presto SQL engine.