execute SQL query in postgreSQL database in node js express js project explained with source code

Hi,
as a beginner,we may not aware about how to set up node js express js project and How to connect postgreSQL database and execute sql queries in postgreSQL database
In this video ,you will get clear idea of
1.How to connect postgreSQL database from node express js project
2.How to execute SQL queries in postgreSQL database from node express js project

postgreSQL
Node JS
Express JS
Project Source Code