Free SQL Course for Data Analysis
Is there a free SQL course for data analysts?
Yes. Topfolio offers two free SQL courses — SQL Basics (3 weeks, beginner) and SQL Advanced (Analytics) (4 weeks, intermediate) — covering SELECT, GROUP BY, joins, CTEs and window functions. Every lesson is free, with in-browser practice questions against a real database. An optional ₹99 verified certificate is available.
The free SQL courses
Both courses are free to learn — every video lesson, interactive exercise and quiz. The ₹99 certificate is optional. Start with SQL Basics if you are new to SQL, or jump to SQL Advanced if you can already write a multi-table join.
SQL Basics
✦ Just launchedLearn SQL from scratch: querying, filtering, grouping, and joining data for analytics use cases.
▶ Free to Learn • ₹99 Certificate →
SQL Advanced (Analytics)
✦ Just launchedMaster analytics-grade SQL: CTEs, window functions, subqueries, advanced queries, and optimization techniques.
▶ Free to Learn • ₹99 Certificate →What you will learn
- Write SELECT, WHERE, ORDER BY and LIMIT queries against a real database
- Aggregate rows into metrics with GROUP BY, SUM, COUNT, AVG and HAVING
- Combine tables with INNER, LEFT and self-joins, and spot row multiplication
- Stage complex queries with CTEs and subqueries for readability
- Rank, partition and compute running totals with window functions
- Handle NULLs, deduplicate with ROW_NUMBER, and clean messy text data
Why is this SQL course free?
The free tier exists to drive traffic, not to upsell. Every lesson in both SQL courses is free permanently — there is no trial period and no paywall on lesson content. The model is simple: learn for free, and if you want a verified certificate to put on your resume or LinkedIn, that is ₹99 per course. If you never pay, you still get the full curriculum. The paid options — the full career track, mentorship and portfolio review — are for learners who want structure and accountability, not for gating the learning itself.
Practise SQL alongside the course
Reading SQL does not teach SQL. Every topic hub below runs real SQL in the browser against a seeded database — you write the query, execute it, and compare your result set to the expected one. All free.
Want SQL inside a full data analyst curriculum?
SQL Basics and SQL Advanced (Analytics) are the first two milestones of the 12-week Data Analyst Career Track, which continues into Excel, Python, Tableau, portfolio projects and 1:1 mentorship with the founder.
Written guides to read alongside the course
- Learn SQL for Data Analysis (full learning path) — the structured topic map and five-step learning path.
- SQL JOINs explained with examples — every join type, including anti-joins and self-joins.
- SQL window functions: complete guide — ROW_NUMBER, RANK, LAG, LEAD, running totals.
- Data analyst roadmap — where SQL sits relative to Excel, Python, BI tools and portfolio projects.
Free SQL course FAQ
Is the SQL course really free?
Yes. Every lesson in SQL Basics and SQL Advanced (Analytics) is free to learn — video lessons, interactive exercises, quizzes and all. There is no trial period and no paywall on lesson content. The only paid element is an optional ₹99 verified certificate if you want proof of completion.
Do I need to install a database to start?
No. Every practice question on Topfolio executes in the browser against a real seeded PostgreSQL or SQLite database, so you write the query and see the result set immediately. There is nothing to install and no local setup to maintain.
How long does the free SQL course take?
SQL Basics is a 3-week beginner course covering SELECT, filtering, sorting, aggregation and joins. SQL Advanced (Analytics) is a 4-week intermediate course covering subqueries, CTEs, window functions and date handling. Together they form a 7-week beginner-to-interview sequence at 8-10 hours per week.
Is a certificate included?
The learning is free. A verified certificate of completion is available for ₹99 if you want a shareable credential for your resume or LinkedIn. The certificate is optional — you can complete the full course without paying anything.
Which SQL dialect does the course teach?
Standard analytical SQL that works across PostgreSQL, MySQL, SQL Server, Snowflake and BigQuery. Joins, GROUP BY, HAVING, CTEs and window functions behave the same across all of them. Practice questions run against real PostgreSQL and SQLite databases.
What is the difference between SQL Basics and SQL Advanced (Analytics)?
SQL Basics is a 3-week beginner course covering SELECT, filtering, sorting, aggregation and joins. SQL Advanced (Analytics) is a 4-week intermediate course covering subqueries, CTEs, window functions and date handling. Take them in that order unless you can already write a multi-table join unaided.
Can I get a data analyst job with just the free SQL course?
SQL is the most heavily tested skill in data analyst interviews, so the free SQL courses are a strong start. Most analyst roles also expect Excel and a BI tool, and you will need portfolio projects to prove the skills. The free tier covers SQL, Python practice and the first module of every course — enough to start, with paid options when you are ready for structure and mentorship.
Do I need to know programming before starting?
No. SQL Basics starts from SELECT statements and assumes zero prior programming experience. SQL is a declarative query language, not a general-purpose programming language, so the learning curve is gentler than Python or JavaScript.