SQL Teaching is described as 'open-source, interactive tutorial for learning SQL. It's available online and can be forked from the source code for self-hosting' and is an website in the Education & Reference category. There are more than 10 alternatives to SQL Teaching, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Android Tablet. The best alternative is Learn SQL, which is free. Other great sites and apps similar to SQL Teaching are SQLZOO (Free), Select Star SQL (Free), SQLBolt (Free) and MySQL Tutorial: Learn SQL Quickly (Free).
Interactive PostgreSQL SQL Tutorial is an online guide through SQL made by Chartio. SQL is the primary language for data exploration and analysis. Users can follow along this interactive PostgreSQL tutorial to learn how to can fetch data for analysis.
It is a very useful application, where you learn a lot about the SQL language. This application can be used anywhere, even when not connected to internet. And it is very small, only 2.2 MB! Become masterful in the art of SQL!.