Curriculum
A guided path from fundamentals to advanced internals.
Lecture-by-lecture progression, no jumping around required
Progress tracking — pick up exactly where you left off
Covers everything from basic SELECT to query planning, indexing strategy, and concurrency
Quizzes
Test your understanding after every chapter.
Hand-crafted questions per topic, not auto-generated filler
Instant feedback with explanations on every answer
Retake anytime — your best attempt counts toward mastery
Daily Quiz
One sharp question a day to keep the fundamentals sticky.
One question a day, pulled from topics you've already studied
Streak tracking to keep the habit going
Spaced repetition so concepts actually stick
Hands-on Labs
Write real SQL against real Postgres.
Auto-graded exercises checked against expected output
Realistic schemas modeled on production-style datasets
Progressive hints to guide you when you get stuck
SQL Playground
A scratchpad Postgres in your browser.
Experiment freely — break things without breaking anything
Try out queries from the lectures without leaving the platform
Reset the database anytime to start fresh
Skills Dashboard
See exactly where you're strong and where to focus next.
Per-knowledge-area mastery scores, not a single vanity number
Calculated from your quiz, lab, and daily-quiz performance
Tells you what to study next instead of leaving you to guess
1:1 Coaching
Live sessions with the instructor when you need them.
Code review, schema design help, or interview prep
Bring a real query plan and we'll dissect it together
Optional add-on — not required to complete the course