why i can't print my datas of object?

Here are my codes:

var express = require('express');
var app = express();
var mysql      = require('mysql');
var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'root',
  password : '1',
  database : 'test'
});
connection.connect();

app.configure(function(){
    app.set('view engine', 'jade');
    app.set('views', __dirname + '/html');
});

app.get('/index/:name',function(req, res){
    data = connection.query('SELECT * FROM deneme', function(err, rows, fields){
        if(err) throw err;
        veri = rows;
        return veri;
    });

    res.render('index', {
        title: req.params.name,
        data: data
    });
});

app.listen(8080);

Shortly I want to print my datas of mysql

INSERT INTO `deneme` (`id`, `name`) VALUES
(1, 'yusuf'),
(2, 'ali');

When I call localhost:8080/index/yusuf it shows below:

[object Object]

What can i print datas?

EDIT

My index.jade file:

!!! 5 html head title= title body p= data

If you want a string representation, you could use JSON.stringify(myObject).

Edit:

res.render('index', {
    title: req.params.name,
    data: JSON.stringify(data)
});

But I'm not sure if that's what you want. You probably want to access the data's properties by referencing them: #{data.someProperty}.

Or you could make the data object return a string representation when it's printed. Here is an example.