内部连接删除不起作用[关闭]

Question

我正在尝试同时删除患者记录和与其患者 ID 关联的任何预约，但两者都不起作用，谁能告诉我哪里出错了？

我的代码是：

<?php
include("includes/staffmenu.php");
include("includes/staffsession.php");
@require_once("includes/dbconfig.inc");

$patid = $_GET['patid'];

$patientname = mysql_query("SELECT * From patient WHERE Patient_ID=$patid");
    while($row = mysql_fetch_array($patientname))
        {   $pfname=$row['Patient_First_Name'];
            $pmname=$row['Patient_Middle_Name'];
            $psname=$row['Patient_Surname'];
        }

  echo "<h1>Success $pfname $pmname $psname (Patient ID: $patid) has been removed from our database, along with any appointments in their name</h1>";

    mysql_query("DELETE FROM appointment, patient 
    USING patient INNER JOIN appointment ON (patient.Patient_ID = appointment.Patient_ID) 
    WHERE patient.Patient_ID='$patid'");

  ?>

它肯定得到的是患者 ID，因为患者 ID 的名称呼应得很好......

Answer 1

DELETE patients, appointments FROM patients
LEFT JOIN appointments USING(Patient_ID)
WHERE Patient_ID = 1

参考http://dev.mysql.com/doc/refman/5.5/en/delete.html

ps。考虑使用参数传递 patid，因为您正在使用直接来自 GET 的值打开自己的 sql 注入

http://php.net/manual/en/mysqli-stmt.bind-param.php

pps。你也应该把回声放在最后，因为那时你还没有真正删除:)