Question

id|addedby|requested | status
1 |   6   |     4    | accepted
2 |   4   |     6    | accepted

你可以看到两行......用户6和4 我的问题是。如果用户想要取消/删除用户，则只有一行被id删除我想删除这两行，以便用户从双方都不友好。

我从ajax传递了两个变量，它的工作正常，值成功传递。

但即使我已经尝试过它也不是deletin ..

会话ID = 4; user id = 6;

<?php
session_start()
$sess=$_SESSION['SESS_MEMBER_ID'];
include("config.php");
if($_POST['id'])
{
$id=$_POST['id'];
$id = mysql_escape_String($id);
$sql = "delete from friends WHERE
(addedby='$sess' and requested='$id')
OR (addedby='$id' and requested='$sess')";
mysql_query($sql);
}
?>

...连

<?php
session_start()
$sess=$_SESSION['SESS_MEMBER_ID'];
include("config.php");
if($_POST['id'])
{
$id=$_POST['id'];
$id = mysql_escape_String($id);
$sql = "delete from friends WHERE
(addedby='4' and requested='6')
OR (addedby='6' and requested='4')";
mysql_query($sql);
}
?>

甚至

<?php
session_start()
$sess=$_SESSION['SESS_MEMBER_ID'];
include("config.php");
if($_POST['id'])
{
$id=$_POST['id'];
$id = mysql_escape_String($id);
$sql = "delete from friends WHERE`enter code here`
(addedby=6 and requested=4)
OR (addedby=4 and requested=6)";
mysql_query($sql);
}
?>

Answer 1

我假设您要删除单个 SQL查询中的两行。在这种情况下，只需在where子句中指定两个条件：

DELETE FROM whatever_tablename
WHERE
(addedby=6 and requested=4)
OR (addedby=4 and requested=6)

Answer 2

您可以使用伪造的代码，因为您没有提供足够的信息

DELETE FROM [table]
WHERE (addedBy = [addedByVar] AND requested = [requestedVar]) 
    OR
      (addedBy = [requestedVar] AND requested = [addedByVar])

在mysql中删除两行

但即使我已经尝试过它也不是deletin ..

2 个答案: