This is a great course to build up your basics.

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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.

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Data Analysis SQL Fundamentals

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