Badge for replying to a topic in a specific category

data & reporting
1

Here’s a badge query for someone who replies to a post in a category (id=19). The post_number > 1 makes sure that it’s a reply, not the first post.

SELECT DISTINCT ON (p.user_id)
p.user_id, p.id post_id, p.created_at granted_at
FROM badge_posts p
JOIN topics t ON t.id = p.topic_id
WHERE category_id = 19 AND p.post_number > 1
AND (:backfill OR p.id IN (:post_ids) )
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