Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

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.

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 ...

SELECT statement. SQL Server 2000 introduces SQL collations, a large collection of named collation types that specify different combinations of character sets and sort orders.

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how.

A few strategic decisions can help improve your generative AI code and queries, and prevent sending out sensitive data.

Any query serves as a table to be queried by any other query, which is why queries may be nested almost infinitely within queries. Anyone who has seen a ten- or twenty-page SQL SELECT statement can ...

A free tool to reduce coding for developers who like to surface T-SQL database recordsets in a simple collection of customized POCO objects.