LU05a - Overview

The W3School provides us with a series of useful tutorials that are both well structured and free to access. In detail, each section of the topic in question consists of three key elements, as shown in the screenshot below:

1. Section of expertise we want to achieve, such as SQL or JavaScript.
2. Available SQL function including the general syntax, a short description and some practical examples.
3. A sandbox for testing some SQL commands, provided for instant practising the examples without having to install a lot of software.

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