php - mysql升级到8后报错，only_full_group_by错误

Question

这一行给了我错误:

Error: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'hng_1.tags.id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

foreach($groups as $group)
    {
            $query = mysqli_query($verbindung, "SELECT * FROM (SELECT *, COUNT(id) AS c FROM tags WHERE typ='" . mysqli_real_escape_string($verbindung, $group) . "' GROUP BY slug ORDER BY c DESC LIMIT 9) AS i ORDER BY i.tag ASC") or die("Error: " . mysqli_error($verbindung));

            while ($row = mysqli_fetch_array($query)) {
                    $tmp_tags[] = $row;
            }
    }

如何更改查询来修复此错误？

Answer 1

对于其他感兴趣的人，我解决了这个问题。我将 id 添加到 GROUP BY，因此它现在知道要选择什么。

GROUP BY slug, id 

修复它。