隐藏我的查询中的重复行

Question

我的目标是只展示一个＆＃39; matiere＆＃39;和所有的人一起，但我得到了每一个人的感觉。为每个人提供重复的信息。我需要隐藏这些，而不是删除它们。

老师可以添加一个“产品”。与他们的模块devoir＆＃39;，这意味着＆＃39;模块＆＃39;每次都与'devoir＆＃39;重复。

PHP：

echo"<br><button class='btn btn-info cursor' name='butAf'>Afficher</button>";



if(isset($_POST['butAf']))
{        

    /*ID_CLASS and ID_ANNEE just to filter the class and the year of study*/
$query5 = "select * from devoir inner join prof_an_cls on  prof_an_cls.ID_PROF_AN_CLS = devoir.ID_PROF_AN_CLS where CIN_ELEVE = '$cinE' and ID_ANNEE=$ID_ANNEE and  ID_CLASS = $ID_CLASS";
$result5 = mysqli_query($con,$query5);
if(mysqli_num_rows($result5)>0)
{
    echo"<table class='table table-bordered table-striped table-hover table-info'><tr>
    <th>MATIERE</th>
    <th>devoir1</th>
    <th>devoir2</th>
    <th>devoir3</th>
    <th>devoir4</th>
    <th>devoir5</th>

    </tr>
    ";
    while($rows = mysqli_fetch_assoc($result5))
    {/*i guess this loop its the reason of duplicating */
       $moduleD = $rows['MODULE_DEVOIR'];

    $queryDEV = "select * from devoir inner join eleve on devoir.CIN_ELEVE = eleve.CIN_ELEVE where eleve.CIN_ELEVE = '$cinE' and MODULE_DEVOIR = '$moduleD' order by MODULE_DEVOIR";

    $resultDEV = mysqli_query($con,$queryDEV);
        echo"<tr><td>$moduleD</td>";     

           while($rows = mysqli_fetch_assoc($resultDEV))/*loop2*/
            {
                $noteDEV = $rows['NOTE_DEVOIR'];

                  echo"<td>$noteDEV</td>";


              }


        echo"</tr>";
    }



    echo"</table>";
}
}