问节点mysql在日志记录过程中提取结果并更改结果

EN

setInterval(function () {
    var connection = mysql.createConnection(db_access);
    connection.connect(function(err){
      if(err){
        console.log('Error connecting to Db');
        return;
      }
    });

    var q = "SELECT * FROM tradeOfferPoll";

    connection.query(q, function (err, results) {
        if (err) throw err;

        if (results.length > 0) {
            console.log(results[0].steamid);
            console.log(results[0].name);
        }
    });
}, 5000);