我尝试了很多解决方案,但都没有。如果我注释掉DESC查询页面加载正常但没有注释,如果我把查询放回去,我得到错误。我无法看清我做错了什么,并坚持到这一点,直到我解决它。任何帮助将不胜感激。
<!-- Posted Comments -->
<?php //post comments query
$query = "SELECT * FROM comments WHERE comment_post_id = {$the_post_id} ";
$query .= "AND comment_status = 'Approved' ORDER BY comment_id = DESC ";
//$query .= "ORDER BY comment_id = DESC ";
$select_comment_query = mysqli_query($connection, $query);
if(!$select_comment_query) {
die('Query Failed' . mysqli_error($connection));
}
while ($row = mysqli_fetch_assoc($select_comment_query)) {
$comment_date = $row['comment_date'];
$comment_content = $row['comment_content'];
$comment_author = $row['comment_author'];
?>
<!-- Comment -->
<div class="media">
<a class="pull-left" href="#">
<img class="media-object" src="http://placehold.it/64x64" alt="">
</a>
<div class="media-body">
<h4 class="media-heading"><?php echo $comment_author; ?>
<small><?php echo $comment_date; ?></small>
</h4>
<?php echo $comment_content; ?>
</div>
</div>
<?php } ?>
</div>
答案 0 :(得分:2)
我认为=
是不必要的。也许你打算:
ORDER BY comment_id DESC
此命令按comment_id
降序排序。
或者,如果您希望首先显示特定的comment_id
:
ORDER BY comment_id = ? DESC
?
是您想要的值。
答案 1 :(得分:0)
排序依据列名称使用默认值ASC。
如果要按降序对数据进行排序,则在列名称后添加空格并添加ASC或desc 按升序排序
Order by column_name ASC
Or
Order by column_name
按降序排序
Order by column_name DESC