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[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.

(4.9) 959 reviews

5,454 learners

Level Basic

Course period Unlimited

SQL
SQL
SQL
SQL
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Reviews from Early Learners

Reviews from Early Learners

4.9

5.0

Jon

100% enrolled

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.

5.0

C성일

100% enrolled

I'm hooked on HackerRank. It's really fun. Thank you for rekindling my passion as a data analyst.^^

5.0

이재철

100% enrolled

This lecture is very helpful for my work. Thank you.

What you will gain after the course

  • Fetching Data with SQL

  • 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

  1. "[Practice Makes Perfect]" → Hands-on learning approach (solving a total of 20 problems)
  2. "For Data Analysis" → A curriculum focused on SQL features essential for data analysis
  3. "Intermediate SQL" → Prior knowledge of basic grammar (SELECT, FROM, WHERE, ORDER BY) is required

[Practice Makes Perfect] Differences Between Basic, Intermediate, and Advanced SQL

[데이터리안] 중급 SQL.png.webp

Previous Lecture & Follow-up Lecture Guide 🔖

[Practice Makes Perfect] Basic SQL for Data Analysis
Learn basic SQL syntax and solve real problems
[Practice Makes Perfect] Advanced SQL for Data Analysis
Learn various features for advanced SQL utilization

Recommended for
these people

Who is this course right for?

  • Someone who has learned SQL theory but feels they lack practical experience

  • A person preparing for SQL coding tests

  • People who need SQL lectures focused on problem-solving

  • Someone who wants to just dive into SQL without any prior knowledge

  • Someone who wants to become a data analyst

Need to know before starting?

  • Taking a Basic SQL Course for Data Analysis

Hello
This is datarian

23,196

Learners

2,728

Reviews

28

Answers

4.9

Rating

35

Courses

Experienced working analysts with solid practical backgrounds design the data analysis curriculum and teach the classes themselves.

If you want to learn more about Datarian

👉 https://datarian.io/

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Reviews

All

959 reviews

4.9

959 reviews

  • the27920609님의 프로필 이미지
    the27920609

    Reviews 13

    Average Rating 5.0

    5

    100% enrolled

    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.

    • decaf20214656님의 프로필 이미지
      decaf20214656

      Reviews 3

      Average Rating 5.0

      5

      100% enrolled

      I'm hooked on HackerRank. It's really fun. Thank you for rekindling my passion as a data analyst.^^

      • jookg5446님의 프로필 이미지
        jookg5446

        Reviews 2

        Average Rating 5.0

        5

        100% enrolled

        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

        • jaecheollee님의 프로필 이미지
          jaecheollee

          Reviews 2

          Average Rating 5.0

          5

          100% enrolled

          This lecture is very helpful for my work. Thank you.

          • hjheo님의 프로필 이미지
            hjheo

            Reviews 3

            Average Rating 4.0

            5

            100% enrolled

            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!

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