你好！
我正在为那些帖子通过“解决方案复选框”插件被标记为解决方案的用户创建一个徽章。这是 SQL 查询：
SELECT
u.username AS "username",
count(*) AS "count_received_best_answer",
current_timestamp granted_at
FROM
notifications n
JOIN
users u ON n.user_id = u.id
JOIN
topics t ON n.topic_id = t.id
JOIN
categories c ON t.category_id = c.id
WHERE
n.notification_type = 14 AND
n.data LIKE '%solved.accepted_notification%' AND
n.created_at > CURRENT_DATE - INTERVAL '30 days'
GROUP BY u.username
HAVING count(*) > 0
ORDER BY count(*)
然而，当我尝试预览徽章时，出现了以下错误：
通过在此处搜索，我了解到 q.user_id 是这些徽章作业后台中的一个字段，但我无法弄清楚为什么会出现这个错误。感谢任何帮助！
