Linking badge sql to a topic id?

Support
2

I think you can:

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'

Replace YOUR_TOPIC_ID

And it has to have Query targets posts ticked I think.

Lmk if that works.