how to add display_name

how to add display_name to this request please

 $reponse = $bdd->query("SELECT  a.post_title, m1.meta_value AS total, m2.meta_value AS titre, m3.meta_value AS date
FROM  wp_posts a
LEFT JOIN wp_postmeta m1
    ON a.ID = m1.post_id
LEFT JOIN wp_postmeta m2
    ON a.ID = m2.post_id
LEFT JOIN wp_postmeta m3
    ON a.ID = m3.post_id
WHERE a.post_type='post' 
AND m1.meta_key='total_des_prises'
AND m2.meta_key='titre'
AND m3.meta_key='date';
 " );

while ($donnees = $reponse->fetch())
{var_dump($donnees);
?>
<br>
<?php
}