INNER JOIN is the simplest JOIN type and if you want to understand the clue of using JOINS,
you definitely should start from this point.

In this article i will show you how to use INNER JOIN and explain when to use it properly.

Sometimes you want to change the column name to make it more readable and easier to analyze.

AS clause will fit all your expectations in this field

This article will help you with understating GROUP BY and HAVING commands inside SQL language.

SQL is not a hard language, but the common usage of different ORM tools can make us less focused on clean SQL queries than ever.

This is why i wrote here a small cheatsheet with simple SQL commands.

Copying data from ssh to local is not that hard:

scp -r admin@servername.com:domains/domain-name.pl/public_html/admin/backups admin/backups

This is how to copy from local to remote:

scp /Downloads/example_file.txt admin@servername.com:domains/domain-name.pl/public_html/admin/backups

You can use "-r" flag to copy full folder. Without this you can copy only one file.

Quick cheatsheet to kill your Rails session on port 3000

kill -9 $(lsof -i tcp:3000 -t)