SQL is the most-asked skill in Indian data and backend interviews, and this free course turns every classic question into a named, runnable pattern: second and Nth highest salary, finding and deleting duplicates, top-N per group with ROW_NUMBER/RANK, running totals, employees-and-managers self-joins, customers-who-never-ordered LEFT JOINs, and WHERE-vs-HAVING. Every example runs live in your browser so you practise on the spot. Part of the free SQL for Data Analysts course.
This free course is built for computer-science and engineering students preparing for placements, college students who picked SQL up in class but never wrote real queries, working professionals (analysts, support, QA) who want to be promoted to data roles, and self-learners chasing data analyst, backend, or product roles. If you have ever Googled sql interview questions for freshers (free, with live practice) and bounced off paid-subscription paywalls or content that assumes you already know everything — this is the course for you.
This page is part of our flagship free course, SQL for Data Analysts. The full course is delivered as short, focused lessons, each with bilingual narration (English and Hinglish), interactive practice widgets, and a clear before-and-after so you can feel yourself getting better. You can pause for weeks and pick up exactly where you left off — your progress is saved.
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No. Every lesson runs SQLite directly in your browser tab. Type the query, click Run, see the rows — no downloads, no setup, works on a phone.
Yes. Every "must-know" SQL interview pattern is covered as a named lesson — second-highest salary, find duplicates, top-N per group, WHERE vs HAVING, INNER vs LEFT JOIN, employees-and-managers self-join. You write and run them, not just read them.
For the SQL you write in interviews and day-to-day work, the answer is no — SELECT, JOIN, GROUP BY, window functions all behave the same. We call out the few engine-specific differences (e.g. RIGHT JOIN is INNER-emulated in SQLite) where they matter.
About 18 hours over 4 weeks if you do 30-45 minutes a day. The 36-lesson path mirrors a real onboarding plan at a small Indian startup.
Yes — after finishing all weeks you can download a verifiable completion certificate, free.
Click below to open SQL for Data Analysts. You will land on the course dashboard, see the week-by-week plan, and can start Lesson 1 immediately. No trial period, no payment screen, no upgrade pop-ups — ever.