MySQL

Hi! I have some problem with mySQL (mariaDB) connections. I use slash command in my bot and separated it to different folders (i send it as a picture). I define the mySQL connection in the index.js file and the other command dont see that and its variables, etc. I want the other files to see the SQL connection, bcs it connects to SQL every single time i run a command that uses SQL (i cant do it better way, its the reason why i need help). The bot started crashing bcs of this so many connections so i want to reduce its connection rate. For example i want to connect one time to the SQL and the other files get the connection from there.