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原标题:Get the maximum value of second clause

i 欲得到相对用户的补偿

$order_id = "select * from products_orders where order_user_id = $user_id AND MAX(order_id) "; $ord_del = mysqli_query($con,$order_id) ; $ord_row = mysqli_fetch_assoc($ord_del);

i) 尝试这一方法,但这项工作获胜。

问题回答

www.un.org/Depts/DGACM/index_french.htm 结构指挥是一种团体职能,需要用普通栏显示。 因此,仅增加<代码> 由组成的小组应当按照你的意愿开展工作。

$order_id = "SELECT order_user_id,order_id FROM products_orders WHERE order_user_id = $user_id AND MAX(order_id) GROUP BY order_user_id";

您可修改选定说明,以便其为<代码>,按次序_id desc,然后取回第1记录(limit 0,)。

在这种情况下,只有最高命令的记录才能检索。

因此,该法典可以

$order_id = "select * from products_orders where order_user_id =". $user_id . " order by order_id desc limit 0,1";
$ord_del = mysqli_query($con,$order_id) ; 
$ord_row = mysqli_fetch_assoc($ord_del);




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