PHP/MySQL : Is it possible to add one to the field without selecting from db?

Question

我有这个代码...

$q = "SELECT count FROM " . TABLE_PREFIX . "count WHERE 1 LIMIT 1;";
        $r = mysql_query($q);

        if (!$r) {
            echo $q;
            return false;
        }

        $o = mysql_fetch_object($r);
        $count = $o->count + 1;

    $q = "UPDATE " . TABLE_PREFIX . "count SET `count` = {$count}";

如您所见，它从数据库中选择字段(它只是一个数字)并在将其发送回数据库之前将其加 1...

是否可以跳过选择部分，而只是说类似的话:

`SET `count` += 1`

或者类似的东西？

Answer 1

试试这个。您可以更新列而无需获取和递增到该字段

UPDATE tablename set `count` = (`count`+1) WHERE 1 LIMIT 1;