“Getting a data science job would have been much harder without Dataquest. It’s a great product. I recommend it to anyone who asks me about how to get started.”

Adam Zabrodski

Data Science Manager @ Later

Key skills

  • Query data across multiple tables
  • Answer business questions using SQL
  • Define table relations

Course outline

Intermediate SQL for Data Engineering [6 lessons]

Joining Data in SQL 2h

Lesson Objectives
  • Employ the four common join types
  • Employ joins with subqueries to write intermediate queries
  • Answer business questions using joins

Intermediate Joins in SQL 2h

Lesson Objectives
  • Write queries that join three or more tables
  • Define recursive joins, pattern matching, and the case statement
  • Write advanced joins

Building and Organizing Complex Queries 2h

Lesson Objectives
  • Format queries to make them readable
  • Organize your queries using the "with" clause
  • Combine tables using set operations

Querying SQLite from Python 1h

Lesson Objectives
  • Run SQL queries using sqlite3 in Python
  • Employ cursors and tuples

Table Relations and Normalization 2h

Lesson Objectives
  • Apply the SQLite shell with databases
  • Normalize database tables
  • Update data in database tables

Guided Project: Answering Business Questions using SQL 1h

Lesson Objectives
  • Frame a business question into advanced SQL queries
  • Create visualizations of your query results using pandas
  • Write analyses of your work

Projects in this course

Guided Project: Answering Business Questions using SQL

Learn and practice the SQL data analysis workflow.

The Dataquest guarantee


Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.


We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Master skills faster with Dataquest

Go from zero to job-ready

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Showcase your path certification

Impress employers by completing a capstone project and certifying it with an expert review.

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Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”


Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”


Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”

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