将徽章 SQL 链接到主题 ID?

我认为你可以这样做:

SELECT
  u.id AS user_id,
  CURRENT_TIMESTAMP AS granted_at,
  (SELECT id FROM posts WHERE topic_id = YOUR_TOPIC_ID AND post_number = 1) AS post_id
FROM users u
INNER JOIN group_users gu ON gu.user_id = u.id
INNER JOIN groups g ON g.id = gu.group_id
WHERE g.name = 'beta-testers'

YOUR_TOPIC_ID 替换为实际值。

另外,我认为需要勾选「查询目标为帖子」选项。

如果可行请告诉我。