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 Server 2016 adds new support for the JSON format when retrieving rows from a database table. Because most Web Services now return data in the JSON format, this support can simplify those Action ...

Dino Esposito explains JSON-to-rowset native support in SQL Server 2016 and provides a realistic perspective of data query when you have JSON data stored in the database.

Apache Phoenix lets you use standard SQL queries in a NoSQL database, and it's optimized for HBase ...

Here's a look at different ways to query Hadoop via SQL, some of which are part of the latest edition of MapR's Hadoop distribution ...