Learn SQL
Go from zero to querying real databases with confidence.
Free to start. Built from a single prompt. No credit card.
SQL is the language you use to ask questions of almost any database. Learnr builds you a personalized SQL course from a single prompt, then teaches it through short, interactive lessons that adapt as you improve.
What you'll learn
- Write SELECT queries to retrieve exactly the data you need
- Filter and sort results with WHERE, ORDER BY, and LIMIT
- Combine tables using inner and outer joins
- Summarize data with GROUP BY and aggregate functions
- Understand how tables, keys, and relationships are structured
What's inside your SQL course
A sample path Learnr builds for SQL. Your real course adapts to your goal and level.
- 1. What a relational database is and how tables work
- 2. Selecting, filtering, and sorting rows
- 3. Aggregating data with GROUP BY
- 4. Joining data across multiple tables
- 5. Subqueries and common table expressions
- 6. Inserting, updating, and deleting records safely
How Learnr builds your course
Type your topic
Tell Learnr you want to learn sql, or get as specific as you like.
Get a personalized course
Learnr instantly builds a full SQL course tailored to your goal and skill level.
Learn and level up
Move through bite-sized lessons and interactive practice, earning XP and keeping your streak.
SQL questions, answered
Which database should I use to learn SQL?
Any of them work. Core SQL is nearly identical across PostgreSQL, MySQL, and SQLite, so the skills Learnr teaches transfer between them.
Is SQL hard to learn?
SQL is one of the more approachable languages to start with. You can write real queries on day one and build up to advanced features gradually.
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