主题参与者的唯一列表？

支持
1

如何最好地输出唯一主题参与者的有序列表？

这将用于抽奖，只需回复主题即可参加。

谢谢！

2

创建数据浏览器查询

-- [params]
-- integer :topic_id

SELECT p.user_id
FROM posts p
WHERE p.topic_id = :topic_id
GROUP BY p.user_id
4 个赞
3

好的，谢谢！

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4

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