SELECT likes, topic, text, DATE, post_id, t.forum, p.name, p.username FROM

(SELECT COUNT(pe.post) AS likes, topic, text, DATE, post_id, creator
FROM Post AS p
WHERE p.topic = 2

JOIN Posts_liked AS pl
ON post_id = pl.post

ORDER BY p.DATE DESC
LIMIT 1)AS x

JOIN Topic AS t
ON x.topic = t.topic_ID

JOIN Person AS p
ON x.creator = p.person_id;