È possibile vedere gli argomenti visualizzati da un utente?

Forse qualcosa del genere:

Chi (utente loggato) visualizza un argomento specifico

-- [parametri]
-- int :topic_id = 1

SELECT
    title,
    viewed_at,
    tv.user_id
FROM topics t
LEFT JOIN topic_views tv
    ON t.id = tv.topic_id
WHERE category_id IS NOT NULL
    AND tv.user_id IS NOT NULL
    AND t.id = :topic_id
ORDER BY viewed_at DESC
LIMIT 1000

Ultime 100 visualizzazioni di argomenti da parte dell’utente

-- [parametri]
-- int :user_id = 1

SELECT
    tv.user_id,
    title,
    viewed_at,
    views,
    t.user_id
FROM topics t
LEFT JOIN topic_views tv
    ON t.id = tv.topic_id
WHERE category_id IS NOT NULL
    AND tv.user_id = :user_id
ORDER BY viewed_at DESC
LIMIT 100