返回所有未收到管理员回复的非私信主题

[tshenry (Taylor)]

这是一个应返回所有未收到工作人员回复的非私信主题的查询：

SELECT t.id topic_id, category_id
FROM topics t
WHERE t.deleted_at IS NULL
  AND t.category_id IS NOT NULL
  AND t.id NOT IN (
    SELECT p.topic_id
    FROM posts p 
    JOIN users u ON p.user_id = u.id
    WHERE  u.admin = 't' OR u.moderator = 't'
      AND p.post_number > 1
  )