我希望數據以降序排列，但我得到了不正確的輸出php

Question

我想按降序排列數據，但輸出的數據不正確。

<?php 

$selxx = "select * from a_points where type='class' GROUP BY en_no DESC"; 
$exxx = $con->query($selxx); 
$ai = 0; 

while($fetp = $exxx->fetch_object()) 
{ 
    if($ai <= 4) 
    { 
     $ai++; 
    } 
    else 
    { 
     break; 
    } 

    $points = 0; 
    $temp = $fetp->en_no; 
    $selt = "select * from a_points where en_no='$temp'"; 
    $ext = $con->query($selt); 

    while($fett = $ext->fetch_object()) 
    { 
     $points = $points + $fett->points; 
    } 
?> 

<tr> 
<td><?php echo $ai; ?></td> 
<td><?php echo $fetp->en_no; ?></td> 
<td><?php echo $fetp->st_name; ?></td> 
<td><?php echo $points; ?></td> 
</tr> 

<?php } ?> 

結果：

我想什麼：

1 150570116027卡蘭97
2 160573116003拉維70
3 15097116013 Krish 40
4 150570116002依禪20

Answer 1

查看您的代碼。

$selxx = "select * from a_points where type='class' GROUP BY en_no DESC"; 

您應該在查詢中使用order by子句。你的查詢會是這樣的。

$selxx = "select * from a_points where type='class' ORDER BY en_no DESC";