This is a lecture that develops SQL skills that are essential for practical work, not just simple SQL grammar. I personally confidently rate this as the top SQL practical lecture in Korea. I was deeply moved by the lecture and the thrill of the Han River. I am now going to the follow-up lecture~~

taegeunkim2252

Through detailed lectures and hands-on practice on the core elements of SQL, we will provide you with a solid foundation to grow into a SQL analysis expert.

dooleyz3525

Data Analysis SQL Fundamentals

Thank you for making the lecture worthwhile.

postgresql

데이터분석

데이터베이스 관리 시스템

DBMS/RDBMS

입문

초급

중급이상

포스트그레SQL

PostgreSQL

Data Engineering

Introducing the lecture and setting up the practical environment.

Join - Join-based mechanism

Join - Outer Join, Non Equi Join, Cross Join

Handling Date, Timestamp, and Interval

Group by and Aggregate Function

Analytic SQL - Overview and Rankings Analytic

Analytic SQL - Aggregate Analytic and Window Details

Analytic SQL - lead/lag, first_value/last_value, rank/reverse quantile functions

[Appendix] Sub-query

In conclusion