I solved the problem myself and looked at the explanation. My skills have improved a lot. It was good to be able to compare my answers with the explanations, and the explanations are easy to understand.

rarexband

Datalian's advanced SQL problem-solving lecture with over 10,000 cumulative students and rich online/offline lecture experience. 
We will solve several problems together to practice advanced SQL content.

datarian

[A hundred words are not as good as seeing once] Advanced SQL problem solving for data analysis

rarexband, thank you for your review. We are glad to hear that your skills have improved a lot!

인프런 누적 수강생 10,000명 이상, 풍부한 온/오프라인 강의 경험을 가진 데이터리안의 SQL 고급 문제풀이 강의. 
SQL 고급 내용을 연습해 볼 수 있는 여러 문제를 함께 풀어봅니다.

데이터리안

윤선미

지식공유자 J

입문

초급

중급이상

[백문이불여일타] 데이터 분석을 위한 고급 SQL 문제풀이

오리엔테이션

Set 1

Set 2

Set 3

Set 4

마무리