表APP
counter | Item 100001 | Ballpen 100002 | Pencil 100003 | Bond Paper 100004 | Marker
Table Purchase_Order
counter | Status 100001 | Yes 100001 | Yes 100001 | Yes 100004 | No
I want to delete all of counter 100001 in app and purchase_order tables. How can I do that?
And this is my code
app.php
<a href="app.php?de='.$row["counter"].'">
if(isset($_GET['de']))
{
$del_id=$_GET['de'];
sql= ...
}
最佳答案
一般的方法查询看起来像这样
DELETE a, p
FROM
(
SELECT 100001 counter
) q LEFT JOIN app a
ON q.counter = a.counter LEFT JOIN purchase_order p
ON q.counter = p.counter;
它会删除两个表中的行，即使其中一个表没有包含 counter = 100001 的行
这是 SQLFiddle 演示
关于php - 两表多次删除，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19921785/