Question

我的mysql查询有问题，我尝试执行ON DUPLICATE KEY UPDATE，但是我得到错误，我不知道为什么，也许是因为我对我的更新语句做错了。这是我的sql代码：

$q3='INSERT INTO prestashop.ps_product_supplier (product_supplier_reference,product_supplier_url) values ("%s","%s") WHERE id_product=%d ON DUPLICATE KEY UPDATE prestashop.ps_product_supplier SET product_supplier_reference= "%s", product_supplier_url= "%s" WHERE id_product = %d';

$sql3 = sprintf($q3, $_REQUEST['tki'],$_REQUEST['tki2'], $_REQUEST['id']);

我知道使用$ sql3这样的不安全方法！但我用它来满足我的个人需求

Answer 1

$q3='INSERT INTO prestashop.ps_product_supplier (id_product,product_supplier_reference,product_supplier_url) values (%d,"%s","%s") ON DUPLICATE KEY UPDATE prestashop.ps_product_supplier SET product_supplier_reference= "%s", product_supplier_url= "%s" WHERE id_product=%d';

$sql3 = sprintf($q3, $_REQUEST['tki'],$_REQUEST['tki2'], $_REQUEST['id']);

Answer 2

$q3='INSERT INTO prestashop.ps_product_supplier (product_supplier_reference,product_supplier_url) values ("%s","%s") WHERE id_product=%d ON DUPLICATE KEY UPDATE prestashop.ps_product_supplier SET product_supplier_reference= "%s", product_supplier_url= "%s"';

$sql3 = sprintf($q3, $_REQUEST['tki'],$_REQUEST['tki2'], $_REQUEST['id'],$_REQUEST['tki'],$_REQUEST['tki2']);

Answer 3

在您的情况下，使用REPLACE语句会更容易 https://dev.mysql.com/doc/refman/5.7/en/replace.html

$q3='REPLACE INTO prestashop.ps_product_supplier (id_product,product_supplier_reference,product_supplier_url) values (%d,"%s","%s")';
$sql3 = sprintf($q3,$_REQUEST['id'], $_REQUEST['tki'],$_REQUEST['tki2']);

您的查询中的错误也是您在INSERT语句中使用WHERE子句 https://dev.mysql.com/doc/refman/5.7/en/insert.html

$q3='INSERT INTO prestashop.ps_product_supplier (id_product,product_supplier_reference,product_supplier_url) values (%d,"%s","%s") ON DUPLICATE KEY UPDATE product_supplier_reference= "%s", product_supplier_url= "%s"';
$sql3 = sprintf($q3,$_REQUEST['id'], $_REQUEST['tki'],$_REQUEST['tki2'],$_REQUEST['tki'],$_REQUEST['tki2']);

我的SQL查询中的语法错误（ON DUPLICATE KEY UPDATE）

3 个答案: