In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries.

Ever tried to learn SQL, the query language that lets you poke at the innards of databases? Most tutorials start by having you create your own database, fill it with nonsense, and then run queries ...

SQL is the world’s most popular language for managing and manipulating databases. Today, Codecademy launched a free Learn SQL interactive course that will teach you the basics of tables, queries ...

Why is SQL still so important? When you look at SQL, you may ask why it has survived—even thrived—for so long. It is certainly not easy to learn, as it has a peculiar syntax that is very much ...

Free Tutorial : Oracle PL SQL Tutorial - font color000000What is PLSQLPLSQL stands for Procedural Language extension of SQLPLSQL is a combination of SQL along ...

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

The SQL Developer unit testing framework involves a set of sequential steps for each test case. The steps are as follows, including the user input for before the step is run and the framework ...