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 ...

Using Creative mode, we asked Microsoft Copilot for the code required to create a table in SQL named Employee that included four columns: EMP_ID, Name, Salary, Age. The AI provided this code ...

I’ll explain this by using examples in DDL, using SQL Server syntax. The short version of this is fairly simple. ... Creating Tables in SQL, and eight other interactive SQL courses.

SQL is a programming language designed for working with what are known as relational databases. Those are systems designed to store information in sets of tables that can be related to each other ...