[Practice Makes Perfect] Intermediate SQL for Data Analysis
Inflearn's SQL intermediate course by Datarian, with over 30,000 cumulative students and extensive online/offline teaching experience.
Learn intermediate SQL theory and solve 20 practice problems together.
A second lecture in the SQL Absolute Basics series that even people who have never coded before can follow!
📢 [Course Update Notice] Upgraded in November 2025. (Last Updated: November 27, 2025)
Update Details - Changed practice platform from w3school to solvesql for faster and more stable SQL practice - Updated and added existing SQL practice problems (total of 20 practice problems for intermediate level) - Provided new SQL cheat sheet
Course Introduction
There are many SQL theory lectures, but why aren't there any courses that can help you build real skills by combining them with problem-solving practice?
Just as studying English grammar endlessly won't improve your conversational skills without actual practice, you can't properly use SQL by only studying grammar.
For those who want to immediately apply SQL in their work and for those preparing for SQL coding tests, this is a helpful course.
If you complete both the SQL beginner and intermediate courses, you'll have the skills to easily solve problems at the level of Programmers' SQL High Score Kit.
Features of the Course
[Practice Makes Perfect] Intermediate SQL for Data Analysis
"[Practice Makes Perfect]" → Hands-on learning approach (solving a total of 20 problems)
"For Data Analysis" → A curriculum focused on SQL features essential for data analysis
"Intermediate SQL" → Prior knowledge of basic grammar (SELECT, FROM, WHERE, ORDER BY) is required
[Practice Makes Perfect] Differences Between Basic, Intermediate, and Advanced SQL
Following the beginner level, the intermediate level was also very good. It's the same as the beginner level review, but it's a shame that the course period is too short for this price.
It was a lecture that gave me a sense of accomplishment because the concepts that I was confused about became a little clearer. I think I still have a lot to learn, so I need to listen to it a few more times, but I was very satisfied. Thank you for the great lecture!
I think my skills have improved a bit as I have been studying step by step with the teacher! I am proud and happy that SQL, which was vague, has become familiar. Thank you for the great lecture. My email address is aksuxn2@naver.com