How to read and display data in cakephp while using query function i.e. from custom query?

I used following format for custom query:

$data = $this->Login->query("select * from logins;");

How do I read and display da开发者_高级运维ta from the $data variable?

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echo "<pre>";
print_r($data);
echo "</pre>";

//Updated code

$this->set('data',$data);