Question

我有post表的以下属性 - ID，标题，CAT_ID，内容，date_posted。对于类别表： id和name。

我在$ query中收到错误。=“ORDER BY posts.id”;

$posts=array();
$query=("SELECT posts.id AS post_id, categories.id AS category_id, title, contents, date_posted, categories.name AS name FROM posts INNER JOIN categories ON categories.id = posts.cat_id");

if(isset($id))
{
$id=(int)$id;
$query.="WHERE posts.id={$id}";
}

$query.="ORDER BY posts.id DESC";
$query=mysql_query($query);

Answer 1

您的查询构造对我来说似乎不正确。在WHERE子句之前应该有一个空格，ORDER BY也是如此。

$posts = array();
$query = ("SELECT posts.id AS post_id, categories.id AS category_id, title, contents, date_posted, categories.name AS name FROM posts INNER JOIN categories ON categories.id = posts.cat_id");

if (isset($id)) {
  $id=(int)$id;
  $query .= " WHERE posts.id={$id}"; // note whitespace before WHERE
}

$query .= " ORDER BY posts.id DESC"; // note whitespace before ORDER BY here
$query = mysql_query($query);

php mysql ORDER BY查询错误

1 个答案: