I am writing this function with node.js, inside the function it gives me the right output, but when I try to call it from the outside it gives me undefined. Do you have some idea why it doesn't work?
 var inquinamento=function(){
 connection.query('select livelloInquinamento from livInquinamento;',function(err,rows,fields){
 console.log(rows);
 return rows.livelloInquinamento;
 });
 }
 
     
    