What is SQL and how use it?

idk, but I have a desire to learn

docker pull dpage/pgadmin4 
docker pull postgres

U can load a sample dvdrental db from here

Name		Name	Last commit message	Last commit date
Latest commit History 137 Commits
Import-Export-Data		Import-Export-Data
statements		statements
transactions		transactions
utils		utils
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md
compile.sh		compile.sh
connect.sh		connect.sh
loadDVD.sh		loadDVD.sh
runpgadmin.sh		runpgadmin.sh
runpostgres.sh		runpostgres.sh