Free · Launch program

SQL for Beginners

A practical introduction to SQL for people starting from zero. No previous SQL knowledge required.

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5 DAYS · 5 HOURS · BEGINNER

What you'll cover

A simple, practical journey from your first SQL query to answering real data questions.

Day 1 · Meet Data & SQLUnderstand tables, rows and columns. Write your first SELECT query and explore a real dataset.
Day 2 · Find What You NeedUse WHERE, AND / OR, IN, BETWEEN, LIKE, NULL and ORDER BY.
Day 3 · Ask QuestionsUse COUNT, SUM, AVG, GROUP BY and HAVING to turn rows into useful answers.
Day 4 · Connect TablesUnderstand relationships and learn INNER JOIN, LEFT JOIN and how to avoid common JOIN mistakes.
Day 5 · Think Like an AnalystUse CASE, simple subqueries and CTEs, then solve a final practical business question.
The Data Lion approach: Learn the concept → see it in action → write it yourself → solve a small challenge. No previous SQL knowledge required.