根据条件更新 table 和设置列

Question

这是我的代码现在的样子：

$stmt = $link->prepare("UPDATE product SET product_price_lowest = $adPrice WHERE product_id = $prodId");
$stmt->execute();

我想 SET product_price_lowest TO $adPrice only:
IF $adPrice < product_price_lowest

我该怎么做？

Answer 1

然后将其添加到 WHERE 子句以及

WHERE product_id = $prodId
AND $adPrice < product_price_lowest

UPDATE table and SET column based on condition