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 gateway drug to enterprise adoption says analysts at recent developer conference. Hadoop Summit, leading big data developer conference, saw the maturation of the Hadoop ecosystem. Hadoop is ...

Facebook has released Presto -- a distributed SQL query engine optimized for running ad-hoc interactive queries on data sources up to petabytes in size -- to the open source community under the Apache ...