A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...

Now that you understand the basic structure of a SQL application, let's dissect the basis of information retrieval: the query. For many techies, especially those that focus on systems administration, ...

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 ...

The MySQL database server software, which powers many websites and business applications, uses a dialect of the industry-standard Structured Query Language for database maintenance and transaction ...

Because no software developer is complete without at least a passing knowledge of the world’s most popular query language If yo were raised on MongoDB or learned full stack development in a coding ...

In the first part of this series, I explained how to install the necessary Perl modules to get us up and running. As a part of that process, the Oracle client software should have been installed as ...

Stored procedures can speed up your code by reducing trips to your database -- even if you only have one SQL statement to execute. Here's how to speed up your application (and how to simplify your ...