Introduction

This website will teach you to write "Structured query language" (SQL) queries. We have set up a database for you, it lists all the countries in the world in a table called "world".

Click the "run query" button below to see all the rows of the "world" table, then click "next exercise".

You can resize the 3 panels on the page by dragging the corners at the bottom of the screen. You can suggest changes to the exercises by heading to https://github.com/renanlecaro/sqlitezoo . This app is open source, free, ad free, tracking free.