PC
Size: a a a
PC
PC
PC
АА
PC
PC
PC
A
A
E
A
СХ
A
N
PC
PC
N
SELECT posts.*,
(SELECT *
FROM comments
WHERE comments.post_id = posts.id
ORDER BY id DESC
LIMIT 1
) AS last_comment_date
FROM posts
ORDER BY last_comment_date DESC;
SELECT posts.*,
MAX(comments.created_at) AS last_comment_date
FROM posts
LEFT JOIN comments ON posts.id = comments.post_id
GROUP BY posts.id
ORDER BY last_comment_date DESC;
PC
PC
RA