SQL fundamentals

Read tables with purpose. This course gets you from “what is SQL?” to joining two tables without drowning in dialect quirks.

Executive summary

Two modules, five lessons. Finish Module 1 before joins. Each lesson ends with a quiz — pass it to mark the lesson complete in your browser.

Your progress

0 / 5 lessons

Modules

1. Module 1 · SELECT — what SQL is, SELECT / FROM / WHERE, then ORDER BY / LIMIT
2. Module 2 · Joins — INNER JOIN, then LEFT JOIN and NULLs

Start

1. What is SQL?
2. Or jump to Module 1 overview

What to do next

1. Open Module 1 · SELECT.
2. Pair later with Data and knowledge when you design AI data paths.