Found this github repo to start working on a concrete project

https://github.com/Sarvesh-Kesharwani/SQL-Data-Analysis-and-Visualization-Projects/tree/master/Advanced%20SQL%20for%20Data%20Scientists

since the sql used in this project was postgresql and not mysql

so downloaded pgadmin since:

https://www.geeksforgeeks.org/difference-between-mysql-and-postgresql/

inserted some records in a table to start working on table, but faced this first issue