Data Analysis with SQL

Overview

SQL is the lingua franca of data work. This hands-on course takes you from your first SELECT to joins, aggregations, subqueries, window functions and analytical patterns such as funnels and retention. You will answer real business questions on a realistic e-commerce database.

Level

Beginner

Language

English

Updated

Jul 2026

Free previews

2 lessons

What you'll learn

• Write queries that filter, sort, group and aggregate data accurately
• Combine tables with inner, left and self joins
• Use CTEs and subqueries to break complex questions into steps
• Apply window functions for rankings, running totals and comparisons
• Build funnel and cohort retention analyses
• Validate results and spot common data quality issues

Curriculum

Requirements

• No prior SQL or programming experience
• Comfort with basic spreadsheet formulas is helpful
• A browser; we provide an in-browser database sandbox

Skills you'll build

Completing this course raises these proficiencies in your skill profile.

Your instructor

Ryan Holt

Senior Data Scientist, Meghna Analytics

Rafiq works with retail and logistics teams to turn raw operational data into decisions. He has written SQL for everything from tiny startups to petabyte warehouses, and he teaches analysis as a way of thinking rather than a bag of syntax.

4.8 instructor rating13K learners2 courses

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Learner reviews

Sabbir Ahmed

Operations Analyst

Sep 11, 2026

Moved from Excel pivot tables to SQL in three weeks. The sandbox exercises mirror the questions my manager actually asks.

IM

Isabelle Moreau

Marketing Analyst

Aug 2, 2026

Rafiq explains window functions better than anyone. The retention cohort lesson was a revelation.

NU

Nasir Uddin

Business Student

Jul 18, 2026

Clear and gradual. I would like a few more practice sets for joins.