PostgreSQL subqueries allow one SQL query to run inside another, making it possible to solve filtering, aggregation, ...

It used to be that finding and using a sample SQL database was quite simple. In fact, the venerable Pubs database used to be installed as part of the SQL Server installation process. Fast forward to ...

As you will see in this chapter, companies use SQL Server for many types of applications and on most tiers now. Gone are the days when you would second guess yourself choosing to use SQL Server over a ...

With JSON now the default format for moving data between clients and servers, SQL Server adds JSON support to make it easier to get your data out of the database and down to the client. SQL Server ...

"Find the best-selling product from last year." When an AI system attempts to answer a question like this by querying a ...

SQL is neither the fastest nor the most elegant way to talk to databases, but it is the best way we have. Here’s why Today, Structured Query Language is the standard means of manipulating and querying ...

Parameterized SQL queries can make PowerShell tools more secure and reliable while preserving smart quotes, emojis and other complex input.

The relational database has been acquiring graph query capabilities for some time, but PostgreSQL 19 is set to go further, ...

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 SQL: old and busted. Hadoop: new hotness. That’s the conventional ...