我想要做的是INSERT
我的数据库中的用户,但IF EXISTS
它应该UPDATE
行,ELSE INSERT INTO
一个新的行。SQL - 如果存在更新ELSE INSERT INTO
当然我首先连接到数据库,GET
$name
,$email
和$birthday
从url字符串。
$con=mysqli_connect("localhost","---","---","---");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$name=$_GET['name'];
$email=$_GET['email'];
$birthday=$_GET['birthday'];
这个工作,但只是增加了新的行;
mysqli_query($con,"INSERT INTO subs (subs_name, subs_email, subs_birthday)
VALUES ('$name', '$email', '$birthday')");
mysqli_close($con);
这是我试过的;
mysqli_query($con,"INSERT INTO subs (subs_name, subs_email, subs_birthday)
VALUES '$name', '$email', '$birthday'
ON DUPLICATE KEY UPDATE subs_name = VALUES($name), subs_birthday = VALUES($birthday)");
mysqli_close($con);
和
mysqli_query($con,"IF EXISTS (SELECT * FROM subs WHERE subs_email='$email')
UPDATE subs SET subs_name='$name', subs_birthday='$birthday' WHERE subs_email='$email'
ELSE
INSERT INTO subs (subs_name, subs_email, subs_birthday) VALUES ('$name', '$email', '$birthday')");
mysqli_close($con);
和
mysqli_query($con,"IF NOT EXISTS(SELECT * FROM subs WHERE subs_email='$email')
Begin
INSERT INTO subs (subs_name, subs_email, subs_birthday)
VALUES ('$name', '$email', '$birthday')
End");
mysqli_close($con);
但他们没有工作,我究竟做错了什么?
任何帮助,非常感谢!
你对桌子有独特的限制吗? – 2013-03-13 11:22:44
[Insert into MySQL table or update if exists](http://stackoverflow.com/questions/4205181/insert-into-a-mysql-table-or-update-if-exists) – 2016-06-07 14:41:01