Title here
Summary here
Course
SQL & Databases
Learn SQL from your first query to production databases — querying, joins, window functions, PostgreSQL, and more, hands-on with real datasets
At a glance
Level
Beginner to Advanced
Lessons
45 lessons across 9 modules
What you build
Real databases & guided projects
Cost
Free forever · no sign-up
Course syllabus
Work through the modules at your own pace. Each lesson is a self-contained, hands-on read.
1 Getting Started with SQL
2 Summarizing Data with SQL
3 Combining Tables with Joins
4 Subqueries, CTEs, and Views
5 Window Functions
6 Querying Databases from Python
7 PostgreSQL for Data Engineers
8 Optimizing PostgreSQL
9 Production Database Tools
Before you start
No prior database experience is needed — you'll write your first query in Lesson 1. The later Python and PostgreSQL modules assume a little Python; if you want it first, our Python for Data Analytics course has you covered.
Course features
Completely Free
No hidden costs or subscriptions
From First Query to Production
SELECT basics through database tuning
Practical Projects
Real databases and guided projects
SQL, PostgreSQL & Beyond
Plus Python, Snowflake, and MongoDB
Self-Paced
Study at your own speed, anytime
Text-Based
Easy to copy, search, and reference
Ready to master SQL?
Begin with Getting Started with SQL and work through all 9 modules, from your first query to production databases.
Start the first lesson