var mysql      = require('mysql');
var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'root',
  password : '',
  database : 'o2'
});

connection.connect();

// connection.query('SELECT 1 + 1 AS solution', function (error, results, fields) {
//     if (error) throw error;
//     console.log('The solution is: ', results[0].solution);
//   });

// var sql = 'SELECT * FROM *';
// connection.query(sql, funtion(err, rows, fields){
//     if(err){
//         console.log(err);
//     } else{
//         console.log('rows', rows);
//         console.log('fields', fields);
//     }
// });

connection.end();