SQL for Builders
SQL is the one language every developer, analyst, and founder needs — and the one they put off the longest. This course teaches SQL through real product scenarios: understanding your users, tracking orders, calculating revenue. No setup required.
What you'll learn
Course outline
Free — no account needed
What Is a Database?
A structured way to store, organise, and find information — faster than any spreadsheet
SELECT and FROM: Asking Questions
The foundation of every SQL query — what you want and where to find it
WHERE: Filtering Your Results
Only show rows that match a condition — the most useful clause in SQL
Full course — $49 one-time
ORDER BY and LIMIT: Sorting and Paging
Get your results in the right order — and only as many as you need
Aggregate Functions: Summarising Data
COUNT, SUM, AVG, MAX, MIN — turn thousands of rows into one number
JOIN: Combining Tables
The most powerful concept in SQL — link related data across tables
GROUP BY: Summarising by Category
Aggregate by groups — revenue per plan, orders per day, signups per country
INSERT, UPDATE, DELETE: Changing Data
The three ways to write to a database — and why to be careful with all of them
Real-World SQL: Building a SaaS Dashboard
Put every concept together — the queries that power actual product analytics
Learning path
Get the full course
All 9 lessons — from database basics to GROUP BY, JOINs, and 10 real product analytics queries.