PHP SQL查詢ORDER by - 語法 - 錯誤？

Question

我想通過id desc（它是「check_todo」-table中的一列）來訂購以下查詢。有誰能夠幫助我？ :)

$todo_query = mysqli_query($db, "SELECT * FROM check_todo WHERE id=".$row2->todo." ORDER by id DESC"); 
while($row3 = mysqli_fetch_object($todo_query)) 
    { 

它不是重複的，它不是因爲保留字。它不適用於「id」或「佔位符」（check_todo中的兩列）...

Answer 1

TYPE is a reserved keyword in MySQL。
加上反引號：

$todo_query = mysqli_query($db, "SELECT * FROM check_todo WHERE id=".$row2->todo . 
     " ORDER by `type` ASC");